JPH11118575A - Micro leak detection method, fluid leak detection device or electronic fluid meter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To detect the occurrence place of the supply abnormality of a fluid at an early stage so as to take quick measures by a method wherein a fluid flow rate inside an apparatus is measured at a constant sampling timing and the maximum value or the minimum value of a very small leak flow rate is found on the basis of its present fluid flow rate. SOLUTION: In order to detect the supply abnormality of a fluid to be supplied to a secondary-side fluid supply system 31B, a fluid flow-rate measuring means 11 measures a fluid flow rate Q flowing into an apparatus at a prescribed sampling timing TSMPL, and the present fluid flow rate Q is found. On the basis of the present flow rate Q of the fluid, a flow-rate computing means 12 finds the maximum value 12aMAX or the minimum value 12aMIN of a very small leak flow rate so as to be displayed on a liquid crystal display 15. In this manner, in a security service operation such as a maintenance control operation or the like with reference to a very small leak warning, the integrated value ΣQ of the present fluid flow rate Q or the maximum value 12aMAX or the minimum value 12aMIN of the very small leak flow rate can be displayed. Consequently, the occurrence place of the supply abnormality of the fluid can be detected at an early stage, and it is possible to take optimum measures quickly.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for detecting an abnormal supply of a fluid supplied to a secondary fluid supply system.
In particular, a supply abnormality of the fluid supplied to the secondary fluid supply system connected downstream of the fluid cutoff valve is detected to shut off the supply of the fluid, and the fluid is supplied to the secondary fluid supply system. The present invention relates to a micro leak detection method for detecting that a supply abnormality of a fluid has been canceled and returning the supply of the fluid.

[0002] The present invention also relates to a device for detecting a supply abnormality of a fluid supplied to a secondary fluid supply system, and more particularly to a device for supplying a secondary fluid supply system connected downstream of a fluid shutoff valve. Leak detection that detects a supply abnormality of the fluid to be supplied and shuts off the supply of the fluid, and detects that the supply abnormality of the fluid supplied to the secondary fluid supply system is released and returns the supply of the fluid. Related to the device.

[0003] The present invention also relates to a fluid meter capable of detecting a supply abnormality of a fluid supplied to a secondary fluid supply system,
In particular, the amount of used fluid is measured, the supply of the fluid supplied to the secondary fluid supply system is detected abnormally, and the supply of the fluid is shut off.
Further, the present invention relates to an electronic fluid meter that detects that the supply abnormality of the fluid supplied to the secondary fluid supply system has been released and returns the supply of the fluid.

[0004]

2. Description of the Related Art FIG. 4 is a flowchart for explaining a minute leak detecting method performed by a conventional fluid leak detecting device or an electronic fluid meter. FIG. 5 is a timing chart for explaining sampling of the fluid flow rate executed by the micro leak detection method of FIG.

Conventionally, a micro leak detection method of this kind, and a fluid leak detection device or an electronic fluid meter for executing the method are supplied to, for example, a secondary fluid supply system connected downstream of a fluid shutoff valve. The flow rate of the fluid to be discharged is detected by using a flow rate pulse generated by a flow rate sensor provided in the secondary side fluid supply system (step Q1), and it is determined whether or not the fluid supply is abnormal (step Q1 to step Q1). Q4),
If it is determined that a fluid supply abnormality has occurred, a minute leak warning is issued and the fluid supply is interrupted (step Q
5).

Specifically, when LP gas is assumed as one type of fluid, the flow rate (unit: unit) of the LP gas supplied to the secondary gas supply system connected downstream of the LP gas cutoff valve is [Liter / hour]) is generated by a flow rate pulse (see FIG. 5) generated by a reed switch type flow rate sensor (an example of a flow rate sensor) interposed in the secondary gas supply system.
(Step Q1), and the monitoring period (specifically, 60 minutes, 24 hours, and 30 days) using the leak timer.
Types of monitoring periods) (60-minute monitoring period: step Q1 → step Q1-1, 24-hour monitoring period: step Q2, 30-day monitoring period: step Q3 → step Q4), and the monitoring period (specific) In this case, when a flow pulse is received for less than 60 minutes, it is determined that there is a minute leak (NO in step Q1), and when no flow pulse is received for the monitoring period or longer, it is determined that there is no minute leak (step Q1).
(YES in step Q1) to return the count value of the leak timer to the initial value (YES in step Q1 → clear leak timer in step Q1-1).

In addition, when the situation in which it is determined that there is a minute leak (NO in step Q1) continues for 24 hours, a process (step Q3) of incrementing the leak timer and counting the number of days of the minute leak is executed. When the number of days of micro leakage has reached 30 days or more (Y in step Q4)
ES), a determination is made as to whether or not there is an abnormality in the supply of LP gas, which determines that a minute leak has occurred, and a small leak of the LP gas (LP
When it is determined that a gas supply abnormality has occurred), a minute leak warning is issued and the supply of LP gas is interrupted (YES in step Q4 → step Q5).

On the other hand, as a conventional fluid leak detecting device for executing such a minute leak detecting method, security information such as the aforementioned minute leak warning is transmitted to a gas management entity connected via a communication line such as a telephone line. There is a known one having a function of notifying a security entity in the form of a message.

Similarly, as a conventional electronic fluid meter that executes such a minute leak detecting method, there is a built-in fluid leak detecting device, billing information such as a metered amount of used gas, and the above-mentioned minute leak warning. There is known a device having a function of reporting the security information of the above in a message form to a gas management entity or a security entity connected via a communication line such as a telephone line.

[0010] Such a fluid leak detecting device and an electronic fluid meter are generally provided individually for general households, stores, and factory facilities which are the main users (users) of LP gas.

Specifically, the gas management entity and the security entity are:
If a fluid leak detection device is installed for each user such as a general household, a store, a factory facility, etc., the general household, using a no-ringing communication method which is a form of NTT telephone service,
Various security services have been executed by accessing each of the fluid leak detection devices at stores and factory facilities, and collectively collecting the security information from each user via a telephone line.

Similarly, when an electronic fluid meter is installed in each of ordinary households, stores, and factory facilities, a gas management entity or a security entity uses a no-ringing communication system, which is a form of NTT telephone service, to use a general household. Each user accesses an electronic fluid meter of a store or factory equipment, collects billing information and security information from each user via a telephone line, and executes billing and various security services.

[0013] In such a usage form for the fluid leak detecting device or the electronic fluid meter, the gas management entity which receives the minute leak warning from the fluid leak detecting device or the electronic fluid meter through the above-mentioned reporting means such as the no ringing communication or the like. The security entity has sent maintenance personnel to the user where the relevant fluid leak detection device or electronic fluid meter is installed.

At this time, a portable terminal having an external communication function such as a data terminal brought by a maintenance person can be connected to an external communication port (specifically, an RS232C communication system provided in a fluid leak detector or an electronic fluid meter). The information relating to the cause of the minute leak warning that can be collected in the form of a message by connecting to a 5-bit communication port) is limited to the count information of the leak timer. , LP gas leak flow rate), etc., and information on the cause of the micro leak warning was not collected.

On the other hand, such a fluid leakage detection device or an electronic fluid meter generally operates using a built-in battery as a power source without depending on external power supply.

[0016]

However, in such a conventional micro leak detection method, a fluid leak detection device or an electronic fluid meter, as described above, maintenance personnel are required to bring a maintenance staff to carry out maintenance for a micro leak warning. Information on the cause of a micro leak warning that can be collected in electronic form by connecting a portable terminal having an external communication function such as a data terminal or the like to an external communication port (5-bit communication port) provided in a fluid leak detection device or an electronic fluid meter Is limited to the count information of the leak timer, and the leakage flow rate of the fluid (in this case, LP
Since information on the cause of the micro leak warning such as gas leak flow rate) has not been collected, the location where fluid supply abnormality (in this case, LP gas minute leakage) has occurred has been discovered early, and the supply abnormality has been detected. (Small leakage of LP gas) It is difficult to quickly perform an optimal treatment for a situation, and as a result, there is a technical problem that it is difficult to perform a sufficient security service for gas equipment.

On the other hand, in such a fluid leakage detecting device or an electronic fluid meter, a case is generally used in which a built-in battery is used as a power source without using an external power supply. (In this case, if the information on the cause of the micro leak warning such as the leak flow rate of the LP gas) is always displayed on the display provided in the fluid leak detector or the electronic fluid meter, the built-in battery is wasted. As a result, there is also a technical problem that the life of the internal battery may be unnecessarily shortened.

An object of the present invention is to solve such a conventional problem. First, a fluid supplied to a secondary fluid supply system connected downstream of a fluid shutoff valve is provided. A fluid supply / return method for detecting a supply abnormality of the fluid and interrupting the supply of the fluid, and detecting that the supply abnormality of the fluid supplied to the secondary fluid supply system is released and returning the supply of the fluid. A step of measuring the fluid flow rate flowing in the apparatus at a predetermined sampling timing to obtain a current fluid flow rate, and a step of calculating a maximum value of the micro leak rate or a minimum value of the micro leak rate based on the current fluid flow rate And a storage step of storing the maximum value of the micro leakage flow rate or the minimum value of the micro leakage flow rate based on the current fluid flow rate, and the maximum value of the micro leakage flow rate or the micro leakage rate stored according to the selection display request command. A display step of displaying at least one of the minimum values of the flow rate, a display step of displaying the current fluid flow rate in real time in response to a selection display request command, and A minute leak timer process that counts a continuous predetermined period that was not detected every time it was not detected and generated minute leak continuation frequency data, and a minute leak occurred when the minute leak continuation frequency data exceeded a predetermined number of days A minute leak warning step for notifying that the fluid flow rate has not been detected, and the minute leak timer step includes a step of clearing the minute leak continuation frequency data and returning to the initial value when the current fluid flow rate is not detected during the predetermined period. The display step includes a flow integrated value display step of displaying the integrated value of the current fluid flow rate, and the integrated flow value display step includes a step of turning off the display illumination light source in response to the turn-off instruction. After a certain period of time has elapsed since the lighting light source was turned on, the process of turning off the display lighting light source in response to the turn-off command, and when the cutoff test was performed, turning on the display lighting light source and displaying the integrated value of the current fluid flow rate and displaying After a certain period of time has elapsed since the lighting light source was turned on, the process of turning off the display lighting light source in response to the turn-off command, and when the initialization of the remaining amount management is performed, the display lighting light source is turned on to calculate the integrated value of the current fluid flow rate. Display, after a lapse of a certain time from the lighting of the display illumination light source, a step of turning off the display illumination light source in response to the turn-off command, and when the opening operation of the shut-off valve is performed, the display illumination light source is turned on to change the current fluid flow rate. A logical configuration that displays the integrated value and turns off the display illumination light source in response to a turn-off command after a certain period of time has elapsed since the illumination of the display illumination light source enables security services such as maintenance management for micro leakage warnings. When performing a screw, it is possible to display at least one of the integrated value of the current fluid flow rate, the maximum value of the micro leak flow rate based on the current fluid flow rate, and / or the minimum value of the micro leak flow rate, and on the other hand, the count of the leak timer In addition to the information, the external communication function such as a data terminal brought by maintenance personnel can be used to determine at least one of the integrated value of the current fluid flow rate, the maximum value of the micro leakage flow rate based on the current fluid flow rate, or the minimum value of the micro leakage flow rate. The portable terminal having the terminal is connected to an external communication port provided in the fluid leak detection device or the electronic fluid meter so that the information can be collected in the form of a message as information on the cause of the minute leak warning, and the period over which the minute leak determination process is performed Allows the collection of information on the cause of micro leak warnings such as fluid leak flow (LP gas leak flow), and abnormal fluid supply It is possible to find out the point of occurrence of LP gas micro leak at an early stage, and to quickly perform the optimal treatment for the supply abnormality (LP gas micro leak) situation. As a result, sufficient security services are provided for gas equipment. It is an object of the present invention to provide a micro leak detection method capable of detecting a leak.

In addition, the count information of the leak timer,
At least one of the integrated value of the current fluid flow rate or the maximum value of the micro leakage flow rate or the minimum value of the micro leakage flow rate based on the current fluid flow rate is information on the cause of a micro leakage warning such as a leakage flow rate (LP gas leakage flow rate). Display only the required time on the display unit provided in the fluid leak detection device or the electronic fluid meter as
It is an object of the present invention to provide a micro leak detection method that can extend the life of a built-in battery, reduce battery capacity, and reduce battery cost.

Second, the supply of the fluid is interrupted by detecting an abnormal supply of the fluid supplied to the secondary fluid supply system connected downstream of the fluid cutoff valve. In the fluid shutoff / return method for detecting that the supply abnormality of the fluid supplied to the system has been released and returning the supply of the fluid, the fluid flow rate flowing in the apparatus is measured at a predetermined sampling timing, and the current fluid flow rate data is measured. Flow rate measuring means for obtaining the minimum leak flow rate data and the minute leak flow rate minimum value data based on the current fluid flow rate data, and the minute leak rate maximum value data and the minute leak rate based on the current fluid flow rate data. Storage means for storing the flow rate minimum value data, a display switch for generating a selection display request command, and a stored minimum leakage flow rate command in response to the selection display request command. Display means for displaying at least one of the value data and the minimum leakage flow rate data, a timer for counting a predetermined period, and each time the current fluid flow rate data is not detected continuously in the unit period with the predetermined period as a unit period. Generates micro leak continuation frequency data by counting the continuous predetermined period that was not detected in, and if the current fluid flow rate data was not detected during the predetermined period, clear the micro leak continuation frequency data and set it to the initial value. The micro leak continuation frequency evaluation means to be returned and the micro leak warning means for notifying that a micro leak has occurred when the number of days indicated by the micro leak continuation frequency data exceeds a predetermined number of days, and the display means is selectively displayed. According to the request command, the current fluid flow data is displayed in real time, the integrated value of the current fluid flow data is displayed,
It has a display illumination light source that illuminates the display screen in response to a lighting instruction generated in response to pressing of an existing operation switch and that is turned off in response to a light-off instruction, and is received after a lapse of a predetermined time from the lighting of the display illumination light source. Executes control to turn off the display illumination light source in response to the turn-off instruction, and turns on the display illumination light source in response to the lighting instruction generated when the existing interruption test switch for performing the interruption test is pressed. An existing system for displaying the integrated value of the fluid flow data, executing control to turn off the display illumination light source in response to a turn-off command received after a certain period of time has elapsed since turning on the display illumination light source, and executing initialization of remaining amount management Lighting display light source is turned on in response to the lighting command generated when the remaining amount management reset switch is pressed, and the integrated value of the current fluid flow rate data is displayed. Performs control to turn off the display illumination light source in response to the turn-off command received after the time has elapsed, and responds to the lighting command generated when the existing shut-off valve on / off switch for performing the opening operation of the shut-off valve is pressed. Hardware that executes control to turn off the display illumination light source in response to an extinguishing command received after a certain period of time has elapsed after the display illumination light source has been turned on. When performing security services such as maintenance management for micro leak warnings by using a hardware configuration, at least one of the integrated value of the current fluid flow rate, the maximum value of the micro leak flow rate based on the current fluid flow rate, or the minimum value of the micro leak flow rate One of them can be displayed, and on the other hand, based on the integrated value of the current fluid flow rate or the current fluid flow rate in addition to the count information of the leak timer. At least one of the maximum value of the micro leakage flow rate or the minimum value of the micro leakage flow rate is determined by using a portable terminal having an external communication function such as a data terminal brought by a maintenance person to an external communication provided in a fluid leakage detection device or an electronic fluid meter. By connecting to the port, the information on the cause of the micro leak warning can be collected in the form of a message, and the cause of the micro leak warning, such as the fluid leakage flow rate (LP gas leak flow rate), over the period when the micro leak judgment process was performed Collection of information on fluids and early detection of the location of fluid supply abnormalities (small leakage of LP gas)
It is an object of the present invention to provide a fluid leakage detection device that can quickly perform an optimum treatment for a supply abnormality (small leakage of LP gas) and, as a result, can perform a sufficient security service for gas appliances. .

In addition, the count information of the leak timer,
At least one of the integrated value of the current fluid flow rate or the maximum value of the micro leakage flow rate or the minimum value of the micro leakage flow rate based on the current fluid flow rate is information on the cause of a micro leakage warning such as a leakage flow rate (LP gas leakage flow rate). Display only the required time on the display unit provided in the fluid leak detection device or the electronic fluid meter as
It is an object of the present invention to provide a fluid leakage detection device that can extend the life of a built-in battery, reduce battery capacity, and reduce battery cost.

Third, the amount of gas used is measured, the supply of gas to the secondary gas supply system is detected, and the supply of gas is cut off, and the gas is supplied to the secondary gas supply system. In an electronic gas meter that detects that a gas supply abnormality has been released and recovers gas supply, a fluid leak detection device, and combustion control means for activating a gas device connected to a gas supply path to promote a combustion operation. And a gas shutoff valve provided in the gas supply path and temporarily shutting off the gas supply in the gas supply path in accordance with the gas cutoff control. When performing security services, the current fluid flow integrated value,
Alternatively, it is possible to display at least one of the maximum value of the micro leak flow rate or the minimum value of the micro leak flow rate based on the current fluid flow rate, and, in addition to the count information of the leak timer, the integrated value of the current fluid flow rate, Alternatively, a portable terminal having an external communication function such as a data terminal brought by a maintenance person may be used as a fluid leak detecting device or an electronic fluid meter to determine at least one of the maximum value of the micro leak flow rate and the minimum value of the micro leak flow rate based on the current fluid flow rate. Connected to the external communication port provided in the system, so that information on the cause of the micro leak warning can be collected in the form of a message, and the leak flow rate of the fluid (the leak flow rate of the LP gas) over the period when the micro leak judgment process was performed Enables the collection of information on the cause of micro leak warnings, and enables the location of abnormal fluid supply (small leak of LP gas) to be detected quickly. I discovered quickly it can perform optimum treatment conditions (small leakage of LP gas) supply abnormality,
As a result, an object of the present invention is to provide an electronic gas meter capable of performing a sufficient security service for gas appliances.

[0023] In addition, the count information of the leak timer,
At least one of the integrated value of the current fluid flow rate or the maximum value of the micro leakage flow rate or the minimum value of the micro leakage flow rate based on the current fluid flow rate is information on the cause of a micro leakage warning such as a leakage flow rate (LP gas leakage flow rate). Display only the required time on the display unit provided in the fluid leak detection device or the electronic fluid meter as
It is an object of the present invention to provide an electronic gas meter that can extend the life of a built-in battery, reduce battery capacity, and reduce battery cost.

[0024]

According to a first aspect of the present invention, there is provided a fluid shut-off device for detecting a supply abnormality of a fluid supplied to a secondary fluid supply system 31B. In the return method, a step of measuring the fluid flow rate Q flowing in the apparatus at a predetermined sampling timing Tsmpl to obtain a current fluid flow rate Q;
And a minimum leak flow rate calculating step of calculating a maximum value 12a_max of the minute leak flow rate or a minimum value 12a_min of the minute leak flow rate based on the above.

According to the first aspect of the present invention, when a security service such as maintenance management for a minute leak warning is performed, the integrated value of the current fluid flow QΣQ or the maximum value of the minute leak flow based on the current fluid flow Q At least one of 12a_max and the minimum value 12a_min of the minute leak flow rate can be displayed. On the other hand, in addition to the count information of the leak timer, the fluid flow rate Q flowing in the apparatus is measured at a predetermined sampling timing Tsmpl. The integrated value ΣQ of the current fluid flow rate Q obtained in the above, or at least one of the maximum value 12a_max of the minute leak flow rate or the minimum value 12a_min of the minute leak flow rate based on the current fluid flow rate Q, is stored in an external device such as a data terminal brought by maintenance personnel. A mobile terminal having a communication function is provided in a fluid leak detection device 10 or an electronic fluid meter described below. Connected to the communication port (the 5-bit port described above), it is possible to collect in the form of a message as information on the cause of the micro leak warning, and the leak flow rate of the fluid (LP gas leak It is possible to collect information on the cause of micro leak warnings such as flow rate, etc., to detect the location of fluid supply abnormalities (micro leaks of LP gas) at an early stage, and to check for abnormalities in supply abnormalities (micro leaks of LP gas). Optimum treatment can be performed quickly, and as a result, sufficient security services can be provided for the gas appliances 30,..., 30.

According to a second aspect of the present invention, which has been made to solve the above-mentioned problem, in the minute leak detecting method according to the first aspect, the maximum value 12a_max of the minute leak flow rate based on the current fluid flow rate Q is provided. In addition, the logical configuration has a storage step of storing the minimum value 12a_min of the minute leakage flow rate.

According to the invention described in claim 2, according to claim 1
In addition to the effects described in the above, when performing security services such as maintenance management for micro leak warning, the integrated value of the current fluid flow Q Σ Q, or the maximum value 12a_max of the micro leak flow held in the storage process or the micro leak flow Of the minimum value 12a_min can be read out and displayed, and on the other hand, in addition to the count information of the leak timer, the fluid flow rate Q flowing in the apparatus is measured and measured at a predetermined sampling timing Tsmpl. The integrated value 現在 Q of the current fluid flow rate Q, or the maximum value 12a_max of the minute leakage flow rate held based on the current fluid flow rate Q based on the current fluid flow rate Q or the minimum value 1 of the minute leakage flow rate
A mobile terminal having an external communication function such as a data terminal brought by a maintenance person can be connected to an external communication port (the above-described 5-bit port) provided in a fluid leak detection device 10 or an electronic fluid meter described later.
To be connected to the terminal and collect as information on the cause of the micro leak warning in the form of a message, and the cause of the micro leak warning such as the flow rate of fluid leakage (LP gas leakage flow rate) over the period when the micro leak judgment process was performed Information can be collected, the location of fluid supply abnormalities (micro leak of LP gas) is found at an early stage, and supply abnormalities (micro leak of LP gas)
.., 30 can be provided with sufficient security services.

According to a third aspect of the present invention, which is made by the present invention to solve the above-mentioned problem, in the micro leak detecting method according to the first or second aspect, the selective display request instruction 14a is provided.
In accordance with the maximum value of the stored micro leakage flow rate 1
The logical configuration has a display step of displaying at least one of 2a_max and the minimum value 12a_min of the minute leakage flow rate.

According to the invention described in claim 3, according to claim 1
In addition to the effects described in 2 above, when performing a security service such as maintenance management for a minute leak warning, the integrated value of the fluid flow rate QΣQ or the maximum value 12a_max of the minute leak flow rate held in the storage process or the minute value At least one of the minimum value 12a_min of the leak flow rate can be read out and displayed in response to the selection display request command 14a, and on the other hand, in addition to the count information of the leak timer, the fluid flow rate Q flowing in the device is determined. The integrated value ΣQ of the current fluid flow rate Q measured and obtained at the predetermined sampling timing Tsmpl, or the maximum value 12a_max of the minute leakage flow rate or the minute leakage flow rate held based on the current fluid flow rate Q based on the current fluid flow rate Q At least one of the minimum value 12a_min must be set to an external communication function such as a data terminal brought by maintenance personnel. The portable terminal to be connected is connected to an external communication port (the above-described 5-bit port) provided in the fluid leak detecting device 10 or the electronic fluid meter described later, and the information is sent to the selection display request command 14a in the form of a message as information on the cause of the micro leak warning. Accordingly, it becomes possible to collect information on the cause of a minute leakage warning such as a leakage flow rate of a fluid (a leakage flow rate of LP gas) over a period in which a minute leakage determination process is performed, and to collect a fluid. The location where the supply abnormality (small leakage of LP gas) occurs can be found at an early stage, and the optimum treatment for the supply abnormality (small leakage of LP gas) can be promptly performed.
Sufficient security services for 0,..., 30 can be implemented.

According to a fourth aspect of the present invention, which is made by the present invention to solve the above-mentioned problem, in the method of detecting a minute leak according to any one of the first to third aspects, the method according to the present invention responds to the selection display request instruction 14a. Thus, a logical configuration having a display step of displaying the current fluid flow rate Q in real time is provided.

According to the fourth aspect of the present invention, the first aspect is provided.
In addition to the effects described in any one of (3) to (3), when performing security services such as maintenance management for a minute leak warning, the integrated value ΣQ of the current fluid flow rate Q can be read out and displayed in real time. Then, in addition to the count information of the leak timer, the integrated value ΣQ of the current fluid flow rate Q obtained by measuring the fluid flow rate Q flowing in the apparatus at a predetermined sampling timing Tsmpl is calculated by a data terminal or the like brought by the maintenance personnel. A mobile terminal having an external communication function is connected to an external communication port (the above-described 5-bit port) provided in the fluid leak detection device 10 or the electronic fluid meter described later, and in real time as information on the cause of the micro leak warning in the form of a message. It becomes possible to collect, and small leaks such as fluid leak flow rate (LP gas leak flow rate) over the period when the micro leak determination process was performed Collecting information about the cause of warning becomes to be in real time, the fluid supply abnormality of (L
The location where the P gas is slightly leaked is detected in real time, and the optimum treatment can be promptly performed for a supply abnormality (small leak of the LP gas). As a result, the gas equipment 30,. Sufficient security services can be implemented in real time.

According to a fifth aspect of the present invention, which is made by the present invention to solve the above-mentioned problem, in the method of detecting a minute leak according to any one of the first to fourth aspects, the present fluid flow rate Q is predetermined. A logic configuration having a minute leak timer step for counting the continuous predetermined period Tc not detected and generating the minute leak continuation frequency data 17a each time the period Tc is set as a unit period and the detection is not performed continuously during the unit period. And

According to the invention of claim 5, according to claim 1,
In addition to the effects described in any one of (4) to (4), each time when the current fluid flow rate Q is not detected continuously in the unit period using the predetermined period Tc as a unit period, a continuous predetermined period Tc which is not detected is counted. Then, it is possible to optimize the predetermined period Tc and the unit period by man-hours of the parameter adjustment according to the use environment, so that the micro-leakage determination process is performed. The use of highly reliable information on the cause of micro leakage warnings, such as fluid leakage flow rate (LP gas leakage flow rate), can be performed with high accuracy that is optimal for the usage environment, over a period of time. Optimization according to the environment can be achieved, and highly reliable information collection according to the usage environment can be performed in this way. ) Can be detected at an early stage with high accuracy according to the usage environment, and the optimum treatment for a supply abnormality (small leak of LP gas) can be quickly performed with high accuracy. Equipment 30, ..., 30
Can be implemented with high reliability according to the use environment.

According to a sixth aspect of the present invention, which is made by the present invention to solve the above problem, in the minute leak detecting method according to the fifth aspect, the minute leak timer step includes the step of: If the detection is not performed during the predetermined period Tc, the logic configuration includes a step of clearing the minute leak continuation frequency data 17a and returning the data to the initial value.

According to the invention of claim 6, according to claim 5,
In addition to the effects described in the above, the current fluid flow rate Q
Is a unit period, the continuous predetermined period Tc which is not detected is counted every time the detection is not continuously performed in the unit period, and the minute leak continuation frequency data 17a is generated. In the case of not being detected, the logic configuration is such that the minute leak continuation frequency data 17a is cleared (reset count value = initialized) and returned to the initial value, and the predetermined period Tc and the unit period are adjusted according to the usage environment. Since optimization can be easily performed with a small number of man-hours, a minute leak warning for the period during which the minute leak determination process was performed is executed with high accuracy optimal for the usage environment, and the current fluid flow rate Q
Is not detected during the predetermined period Tc, the micro leak warning can be cancelled. Therefore, the information on the cause of the micro leak warning such as the fluid leakage flow rate (LP gas leakage flow rate) can be highly reliable. Optimization according to the use environment can be achieved, and reliable information collection according to the use environment can be performed in this way, so that the current fluid flow rate Q can be detected during the predetermined period Tc. In the event of an abnormality, the location of a fluid supply abnormality (micro leak of LP gas) can be found at an early stage with high accuracy according to the usage environment, and the optimum treatment for a supply abnormality (micro leak of LP gas) situation can be performed with high accuracy. As a result, sufficient security services for the gas appliances 30,..., 30 can be performed with high reliability according to the use environment.

According to a seventh aspect of the present invention for solving the above-mentioned problems, in the minute leak detecting method according to any one of the first to sixth aspects, the minute leak continuation frequency data 17a Has a minute leak warning process for notifying that a minute leak has occurred when the number of days exceeds a predetermined number of days.

According to the invention of claim 7, according to claim 1,
In addition to the effects described in any one of (6) to (6), a continuous predetermined period Tc which is not detected every time the current fluid flow rate Q is not continuously detected in the unit period using the predetermined period Tc as a unit period is counted. To generate the minute leakage continuation frequency data 17a, and when the minute leakage continuation frequency data 17a exceeds a predetermined number of days, the minute leakage continuation frequency data 17a is cleared (count value reset = initialization) and set to the initial value. The logic configuration is such that the predetermined period Tc and the unit period can be easily optimized by man-hours of the parameter adjustment according to the usage environment. Therefore, a minute leakage warning is used over the period when the minute leakage judgment process is performed. It can be executed with high accuracy that is optimal for the environment, and when the micro leak continuation frequency data 17a exceeds a predetermined number of days, the micro leak warning can be canceled, and therefore, a micro leak occurs. It is possible to optimize the information related to the cause of the micro leak warning that informs the user of the fact that it has been highly reliable according to the usage environment, and thus to collect highly reliable information according to the usage environment. As a result, when the minute leak continuation frequency data 17a exceeds a predetermined number of days, a minute leak warning is issued to notify that a minute leak has occurred, and the supply of fluid is abnormal (small leak of LP gas).
Can be quickly detected with high accuracy according to the usage environment, and the optimum treatment for abnormal supply (small leakage of LP gas) can be performed quickly with high accuracy. .., 30 can be implemented with high reliability according to the use environment.

[0038] In order to solve the above-mentioned problem, the invention according to claim 8 according to the present invention is characterized in that, in the micro leak detection method according to any one of claims 1 to 6, the display step includes the step of: The logic configuration includes a flow rate integrated value display step of displaying the integrated value ΣQ of the fluid flow rate Q.

According to the invention described in claim 8, according to claim 1,
In addition to the effects described in any one of (1) to (6), the count information of the leak timer and the integrated value ΣQ of the current fluid flow rate Q are used as information relating to the cause of a minute leak warning such as a leak flow rate (LP gas leak flow rate). Only the required time can be displayed for a short time on the display unit provided in the fluid leak detection device 10 or the electronic fluid meter, thereby reducing the consumption of the battery capacity built in the device and prolonging the life of the built-in battery. It is possible to achieve a longer life, a reduced battery capacity, and a reduced battery cost.

According to a ninth aspect of the present invention for solving the above-mentioned problem, in the minute leak detecting method according to the eighth aspect, the flow rate integrated value displaying step is performed in response to a turn-off instruction 19b. The logical configuration includes a step of turning off the display illumination light source 151.

According to the ninth aspect of the present invention, an eighth aspect is provided.
In addition to the effects described in the above, the count information of the leak timer and the integrated value ΣQ of the current fluid flow rate Q are used as information relating to the cause of a minute leak warning such as a leak flow rate (LP gas leak flow rate) or the like. In addition to displaying only the necessary time for a short time on the display unit provided in the fluid meter, the display illumination light source 151 can be turned off in response to the turn-off instruction 19b, thereby achieving energy saving. In addition, it is possible to reduce the consumption of the battery capacity built in the device, prolong the life of the built-in battery, reduce the battery capacity, and reduce the battery cost.

According to a tenth aspect of the present invention for solving the above-mentioned problem, in the minute leak detecting method according to the eighth or ninth aspect, the flow rate integrated value displaying step includes the display illumination light source. After a lapse of a certain time from the lighting of the light 151, the display illumination light source 151 is turned on in response to the light-off instruction 19b.
Has a logical configuration including a step of turning off the light.

According to the tenth aspect of the present invention, in addition to the effect of the eighth or ninth aspect, in addition to the count information of the leak timer and the integrated value ΣQ of the current fluid flow rate Q, the leak flow rate (L
In addition to displaying only a required time for a short time on the display provided in the fluid leak detecting device 10 or the electronic fluid meter as information on the cause of the micro leak warning such as the leak flow rate of the P gas), the display illumination light source 151 is also provided. The display illumination light source 15 is turned on in response to the turn-off instruction 19b after a predetermined time has passed since the lighting of the display.
As a result, it is possible to save energy by turning off the light of the device 1, thereby reducing the consumption of the battery capacity built in the device, prolonging the life of the built-in battery, reducing the battery capacity, and reducing the battery cost. Can be achieved.

According to an eleventh aspect of the present invention to solve the above-mentioned problem, in the minute leak detecting method according to the ninth or tenth aspect, the flow rate integrated value displaying step includes a shut-off test. When the display illumination light source 151 is turned on, the integrated value ΣQ of the current fluid flow rate Q is displayed, and after a lapse of a predetermined time from the lighting of the display illumination light source 151, the display illumination light source 151 is turned on in response to the light-off instruction 19b.
Has a logical configuration including a step of turning off the light.

According to the eleventh aspect of the present invention, in addition to the effect of the ninth or tenth aspect, the integrated value ΣQ of the current fluid flow rate Q is set to a small leakage warning such as a leakage flow rate (LP gas leakage flow rate). Fluid leak detection device 1
0 or the display section provided in the electro-fluid meter displays the required time only for a short time, and in addition, a turn-off instruction 19b after a lapse of a predetermined time from the lighting of the display illumination light source 151.
As a result, the display illumination light source 151 can be turned off to save energy. As a result, the consumption of the battery capacity built in the device is reduced, the life of the built-in battery is extended, and the battery capacity is reduced. And battery cost can be reduced.

According to a twelfth aspect of the present invention for solving the above-mentioned problem, in the minute leak detecting method according to the ninth or tenth aspect, the flow rate integrated value displaying step includes the step of managing the remaining amount. When the initialization is executed, the display illumination light source 151 is turned on to turn on the integrated value of the current fluid flow rate Q.
A logical configuration including a step of displaying Q and turning off the display illumination light source 151 in response to a turn-off instruction 19b after a lapse of a predetermined time from the lighting of the display illumination light source 151.

According to the twelfth aspect of the present invention, in addition to the effect of the ninth or tenth aspect, when the initialization of the remaining amount management is executed, the display illumination light source 151 is turned on to detect the fluid leakage. The display unit provided in the device 10 or the electronic fluid meter is illuminated, and the integrated value ΣQ of the current fluid flow rate Q is used as information on the cause of a micro leak warning such as a leak flow rate (LP gas leak flow rate). In addition to displaying only the display illumination light source 151 for a short period of time, the display illumination light source 15
As a result, it is possible to save energy by turning off the light of the device 1, thereby reducing the consumption of the battery capacity built in the device, prolonging the life of the built-in battery, reducing the battery capacity, and reducing the battery cost. Can be achieved.

According to a thirteenth aspect of the present invention for solving the above-mentioned problem, in the method for detecting a minute leak according to the ninth or tenth aspect, the step of displaying the integrated flow value includes the step of opening a shut-off valve. When the operation is executed, the display illumination light source 151 is turned on, and the integrated value of the current fluid flow rate QΣQ
Is displayed, and after a lapse of a predetermined time from the lighting of the display illumination light source 151, the display illumination light source 1
A logical configuration including a step of turning off the light 51 is adopted.

According to the thirteenth aspect of the present invention, in addition to the effect of the ninth or tenth aspect, when the opening operation of the shut-off valve is performed, the display illumination light source 151 is turned on to detect the fluid leakage. 10 or illuminate the display unit provided in the electronic fluid meter, and display the integrated value ΣQ of the current fluid flow rate Q as information on the cause of a minute leakage warning such as a leakage flow rate (LP gas leakage flow rate). In addition to displaying the display illumination light source 151 for a short time, the display illumination light source 151 responds to a turn-off instruction 19b after a certain time has elapsed since the display illumination light source 151 was turned on.
To save energy by turning off the light, and as a result, reduce the consumption of the battery capacity built into the device, prolong the life of the built-in battery, reduce the battery capacity, and reduce the battery cost. Can be achieved.

According to a fourteenth aspect of the present invention, which has been made to solve the above-described problem, the secondary fluid supply system 3 is provided.
In a fluid leak detection device 10 for detecting a supply abnormality of the fluid supplied to 1B, a fluid flow rate measuring means 11 for measuring a fluid flow rate Q flowing in the apparatus at a predetermined sampling timing Tsmpl to obtain a current fluid flow rate data 11a; A flow rate calculating means 12 for obtaining data 12a_max of the minimum leak flow rate and data 12a_min of the minimum leak rate based on the current fluid flow rate data 11a; and data of the maximum leak rate based on the current fluid flow rate data 11a. 12a_max and storage means 13 for storing data 12a_min of the minimum value of the minute leakage flow rate.

According to the fourteenth aspect of the present invention, in addition to the effect of the thirteenth aspect, when a security service such as maintenance management for a minute leak warning is performed, the current fluid flow rate data obtained by the fluid flow rate measuring means 11 is obtained. At least one of data of the maximum value 12a_max of the minimum leakage flow rate and data 12a_min of the minimum value of the minimum leakage flow rate, which is obtained by the flow rate calculating means 12 based on the integrated value data of 11a or the current fluid flow rate data 11a and held in the storage means 13. Can be displayed. On the other hand, in addition to the count information of the leak timer, the current fluid flow rate obtained by the fluid flow rate measuring means 11 obtained by measuring the fluid flow rate Q flowing in the apparatus at a predetermined sampling timing Tsmpl. Based on the integrated value data of the data 11a or the current fluid flow rate data 11a, the flow rate calculating means 12 A portable terminal having an external communication function such as a data terminal brought by a maintenance person is described below, using at least one of the data 12a_max of the maximum value of the minute leakage flow and the data 12a_min of the minimum value of the minute leakage flow held in the obtaining storage means 13. Connected to an external communication port (the above-described 5-bit port) provided in the fluid leak detection device 10 or the electronic fluid meter to be collected as information on the cause of the minute leak warning in the form of an electronic message. It is now possible to collect information on the cause of a micro leak warning, such as the flow rate of fluid leakage (LP gas leakage flow rate), etc. over the period in which the fluid supply was performed. At an early stage, and can quickly take optimal measures for supply abnormalities (small leakage of LP gas) and respond to customers As a result, it is possible to implement a security service with high customer satisfaction for the gas appliances 30,..., 30.

According to a fifteenth aspect of the present invention, which is made by the present invention to solve the above problem, in the fluid leak detecting apparatus according to the fourteenth aspect, a selection display request command a
And a display means for displaying at least one of the stored minimum leakage flow rate data 12a_max and the minimum leakage flow rate minimum value data 12a_min in response to the selection display request command 14a. 15 has a hardware configuration.

According to the fifteenth aspect of the present invention, in addition to the effect of the fourteenth aspect, when a security service such as maintenance management for a minute leak warning is performed, the current fluid flow rate data obtained by the fluid flow rate measuring means 11 is obtained. At least one of the integrated value data 11a or the data 12a_max of the maximum value of the minute leakage flow and the data 12a_min of the minimum value of the minute leakage flow held in the storage step is read out to the display means 15 in accordance with the selection display request command 14a. It is possible to improve the man-machine interface by enabling the display, and on the other hand, in addition to the count information of the leak timer, the fluid flow rate Q flowing in the apparatus is measured and obtained at a predetermined sampling timing Tsmpl. Integrated value data of the current fluid flow data 11a obtained by the fluid flow measuring means 11, or A data terminal that a maintenance person has brought at least one of the maximum leakage data 12a_max and the minimum leakage flow data 12a_min currently held based on the fluid flow data 11a based on the fluid flow data 11a. A mobile terminal having an external communication function such as
0 or connected to an external communication port (the above-mentioned 5-bit port) provided in the electro-fluid meter to select and display a request 14 in the form of a message as information on the cause of the micro leak warning.
a, it becomes possible to collect information on the cause of a minute leak warning such as a fluid leak rate (LP gas leak rate) over a period in which the minute leak determination process is performed. It is possible to improve the customer support that allows the user side to quickly detect the location of the fluid supply abnormality (micro leak of LP gas) on the user side, and to take the best treatment for the abnormal supply situation (micro leak of LP gas). As a result, it is possible to improve the ability to respond to customers, and as a result, the gas equipment 3
Security services with high customer satisfaction for 0,..., 30 can be implemented.

In order to solve the above-mentioned problems, the invention according to claim 16 made by the present invention provides claim 14 or 15.
In the fluid leak detection device 10 described in the above, the display means 15 has a hardware configuration configured to display the current fluid flow rate data 11a in real time in response to the selection display request command 14a.

According to the sixteenth aspect of the present invention, in addition to the effect of the fourteenth or fifteenth aspect, when a security service such as maintenance management for a minute leak warning is performed, the current fluid flow rate measured by the fluid flow rate measuring means 11 is determined. Flow rate data 11a
Display means 1 by reading out the integrated value data of
5, the man-machine interface can be improved. On the other hand, in addition to the count information of the leak timer, the fluid flow rate Q flowing through the device can be improved.
Is measured at a predetermined sampling timing Tsmpl and the current fluid flow data 11 obtained by the fluid flow measuring means 11 is obtained.
The integrated value data of “a” is transferred to a mobile terminal having an external communication function such as a data terminal brought by a maintenance person to an external communication port (the above-described 5-bit port) provided in a fluid leak detection device 10 or an electronic fluid meter described later. It is possible to collect in real time as information on the cause of the micro leak warning in the form of a message by connecting, and the cause of the micro leak warning such as the fluid leakage flow rate (LP gas leak flow rate) over the period when the micro leak judgment process was performed Information can be promptly collected in real time, the time required for customers to wait can be shortened, and fluid supply abnormalities (L
It is possible to improve the customer support ability to detect the location of the occurrence of P gas (small leak) in real time, and to promptly take the best treatment for the supply abnormality (small leak of LP gas) without waiting for the customer. , 30 can be performed, and as a result, a security service with high customer satisfaction for the gas appliances 30,... 30, can be implemented in real time.

According to a seventeenth aspect of the present invention, which is achieved by the present invention to solve the above-mentioned problems, in the fluid leak detecting device according to the first aspect of the present invention,
A timer 16 for counting a predetermined period Tc, and counting a continuous predetermined period Tc which is not detected each time the current fluid flow rate data 11a is not detected continuously with the predetermined period Tc as a unit period. To generate the minute leak continuation frequency data 17a, and when the current fluid flow rate data 11a is not detected during the predetermined period Tc, clears the minute leak continuation frequency data 17a and returns to the initial value. The hardware configuration having the frequency evaluation unit 17 was adopted.

According to the seventeenth aspect of the present invention, in addition to the effects of any one of the fourteenth to sixteenth aspects, the current fluid flow rate data 11a obtained by the fluid flow rate measuring means 11 is obtained.
Is a predetermined period Tc, which is a unit period, and is not detected every time a continuous period is not detected in the unit period.
While counting the c, the micro-leakage continuation frequency data 17a is generated, while the micro-leakage continuation frequency data 17a is cleared when the current fluid flow rate data 11a obtained by the fluid flow rate measuring means 11 is not detected during the predetermined period Tc ( A hardware configuration that resets the count value to an initial value) and returns it to the initial value, and optimizes the predetermined period Tc and the unit period by man-hours for parameter adjustment according to the usage environment is a very small leak continuation frequency evaluation means. 17, a minute leak warning is performed with high accuracy optimal for the use environment, and a minute leak warning is performed over a period in which the minute leak determination process is performed.
If the current fluid flow rate data 11a obtained by is not detected during the predetermined period Tc, the minute leak warning can be canceled using the minute leak continuation frequency evaluation means 17,
Therefore, it is possible to optimize the information relating to the cause of the minute leak warning such as the leak rate of the fluid (the leak rate of the LP gas) according to the use environment and to optimize the use environment in this manner. Since the information with high reliability can be collected in response to the current fluid flow rate data 11a obtained by the fluid flow rate measuring means 11 during the predetermined period Tc, the fluid supply abnormality (small leakage of LP gas) ) Can be identified at an early stage with high accuracy according to the usage environment, thereby improving customer supportability and evaluating the most appropriate treatment for abnormal supply (small leakage of LP gas). By using the means 17, it is possible to quickly perform the processing with high accuracy and to improve the customer service ability, and as a result, the gas equipment 3
Security services with high customer satisfaction for 0,..., 30 can be implemented with high reliability according to the use environment.

In order to solve the above-mentioned problem, the invention according to claim 18 according to the present invention is directed to a fluid leak detection device 10 according to any one of claims 14 to 17, wherein
When the number of days indicated by the minute leak continuation frequency data 17a exceeds a predetermined number of days, a hardware configuration having a minute leak warning means 18 for notifying that a minute leak has occurred is provided.

According to the eighteenth aspect of the present invention, in addition to the effect of any one of the fourteenth to seventeenth aspects, the current fluid flow rate data 11a obtained by the fluid flow rate measuring means 11 is obtained.
Is a predetermined period Tc, which is a unit period, and is not detected every time a continuous period is not detected in the unit period.
While counting the c, the micro leak continuation frequency data 17a is generated, and when the micro leak continuation frequency data 17a exceeds a predetermined number of days, the micro leak continuation frequency data 17a is cleared (count value reset = initialization). Since the hardware configuration is set to return to the initial value, and the predetermined period Tc and the unit period can be easily optimized by the number of steps of the parameter adjustment according to the use environment, the minute leakage continuation frequency evaluation means 17 can easily determine the minute leakage. The micro leak warning is executed with high accuracy optimal for the use environment over the period in which the processing is performed, and when the micro leak continuation frequency data 17a exceeds a predetermined number of days, the micro leak warning is issued using the micro leak continuation frequency evaluation means 17 It is possible to cancel, and therefore, a high level of information on the cause of the minute leak warning that the minute leak warning means 18 notifies that a minute leak has occurred. It is possible to optimize according to the use environment of the reliable use, and it is possible to collect highly reliable information in accordance with the use environment. When the number of days has passed, the minute leak warning means 18 notifies that a minute leak has occurred, and a minute leak warning is executed to supply fluid abnormally (LP
It is possible to improve customer support, which enables early detection of the location of the occurrence of minute gas leaks with high accuracy in accordance with the usage environment, and it is possible to minimize the optimal measures for abnormal supply (small leaks of LP gas). Leak continuation frequency evaluation means 1
7 can be performed quickly and with high accuracy, and the ability to respond to customers can be improved.
As a result, security services with high customer satisfaction for the gas appliances 30,..., 30 can be implemented with high reliability according to the use environment.

According to a nineteenth aspect of the present invention, which is achieved by the present invention to solve the above-mentioned problem, in the fluid leakage detecting device according to any one of the fourteenth to seventeenth aspects,
The display means 15 has a hardware configuration configured to display an integrated value of the current fluid flow rate data 11a.

According to the nineteenth aspect of the invention, in addition to the effects of any one of the fourteenth to seventeenth aspects, in addition to the count information of the leakage timer, the current fluid flow rate data 11a obtained by the fluid flow rate measuring means 11 In addition to displaying only the necessary time on the display means 15 for a short time on the display means 15 as information relating to the cause of the minute leakage warning such as the leakage flow rate (LP gas leakage flow rate), the display illumination data is displayed in response to the turn-off instruction 19b. By turning off the light source 151, energy can be saved. As a result, the consumption of the battery capacity built in the device is reduced, the life of the built-in battery is extended, the battery capacity is reduced, and the cost of the battery is reduced. The reduction can be achieved.

According to a twentieth aspect of the present invention to solve the above-mentioned problem, in the fluid leakage detecting device according to the nineteenth aspect, the display means 15 is configured to depress an existing operation switch 19. And a display illumination light source 151 that illuminates the display screen in response to the lighting instruction 19a generated in response to the instruction and turns off the light in response to the light-off instruction 19b.

According to the twentieth aspect of the present invention, in addition to the effect of the nineteenth aspect, the count information of the leak timer and the integrated value data of the current fluid flow rate data 11a obtained by the fluid flow rate measuring means 11 are set to In addition to displaying only the required time for a short time on the display means 15 as information on the cause of the minute leak warning such as the flow rate (LP gas leakage flow rate), the existing operation after a lapse of a predetermined time from the lighting of the display illumination light source 151 The display illumination light source 151 can be turned off in response to the light-off instruction 19b generated by the switch 19 to save energy, and as a result, the display illumination light source 15 can be saved.
Thus, it is possible to reduce the consumption of the battery capacity due to the lighting of 1, and to extend the life of the built-in battery, reduce the battery capacity, and reduce the battery cost.

The invention according to claim 21 made according to the present invention to solve the above-mentioned problem is described in claim 19 or 20.
In the fluid leak detection device 10 described in the above, the display means 15 executes control to turn off the display illumination light source 151 in response to a turn-off instruction 19b received after a predetermined time has elapsed since the display illumination light source 151 was turned on. The configured hardware configuration was used.

According to the twenty-first aspect of the present invention, in addition to the effects of the nineteenth and twentieth aspects, the integrated value data of the current fluid flow rate data 11a obtained by the fluid flow rate measuring means 11 or the current fluid flow rate data 11a The minimum flow rate data 12a_max and the minimum leak rate data 12a_min obtained by the flow rate calculating means 12 and stored in the storage means 13 are calculated based on the leakage flow rate (LP gas leakage flow rate) and the like. In addition to causing the display means 15 to display only the required time for a short time as information on the cause of the micro leak warning, it responds to the turn-off instruction 19b generated by the existing operation switch 19 after a certain period of time has elapsed since the lighting of the display illumination light source 151. As a result, the display illumination light source 151 can be turned off and energy can be saved. Reducing the consumption of battery capacity due to the lighting of the display illumination light source 151, the life of the built-in battery life, decrease of battery capacity, it is possible to achieve a reduction of battery cost.

The invention according to claim 22 made according to the present invention to solve the above-mentioned problems is provided by claim 20 or 21
In the fluid leak detection device 10 described in the above, the display means 15 is configured to display the display illumination light source 151 in response to the lighting instruction 19a generated when an existing interruption test switch 19A for executing an interruption test is pressed. Is turned on to display the integrated value of the current fluid flow rate data 11a, and control is performed to turn off the display illumination light source 151 in response to an extinguishing command 19b received after a certain period of time has elapsed since the display illumination light source 151 was turned on. Hardware configuration.

According to the twenty-second aspect of the present invention, in addition to the effects of the twentieth and twenty-first aspects, the integrated value data of the current fluid flow rate data 11a obtained by the fluid flow rate measuring means 11 or the current fluid flow rate data 11a The minimum flow rate data 12a_max and the minimum leak rate data 12a_min obtained by the flow rate calculating means 12 and stored in the storage means 13 are calculated based on the leakage flow rate (LP gas leakage flow rate) and the like. In addition to displaying only the required time on the display means 15 for a short time as information on the cause of the micro leak warning, the existing shut-off test switch 19 after a certain period of time has elapsed since the display illumination light source 151 was turned on.
The pressing signal of A is used as the light-off instruction 19b, and the display illumination light source 151 can be turned off in accordance with the light-off instruction 19b to save energy. As a result, the display illumination light source 151 built in the device can be used. It is possible to reduce the consumption of the battery capacity due to lighting, prolong the life of the built-in battery, reduce the battery capacity, and reduce the battery cost.

In order to solve the above-mentioned problems, the invention according to claim 23 made according to the present invention is directed to claim 20 or 21.
In the fluid leak detection device 10 described in 1 above, the display means 15 responds to the lighting instruction 19a generated when an existing remaining amount management reset switch 19B for performing initialization of remaining amount management is pressed. The display illumination light source 151
Is turned on to display the integrated value of the current fluid flow rate data 11a, and control is performed to turn off the display illumination light source 151 in response to an extinguishing command 19b received after a certain period of time has elapsed since the display illumination light source 151 was turned on. Hardware configuration.

According to the twenty-third aspect of the present invention, in addition to the effect of the twentieth or twenty-first aspect, the integrated value data of the current fluid flow rate data 11a obtained by the fluid flow rate measuring means 11 or the current fluid flow rate data 11a The minimum flow rate data 12a_max and the minimum leaky flow rate data 12a_min, which are obtained by the flow rate calculating means 12 and stored in the storage means 13 on the basis of the data, are used as the leak flow rate (LP gas leak flow rate) and the like. In addition to displaying only the necessary time on the display means 15 for a short time as information on the cause of the micro leak warning, the pressing signal of the existing remaining amount management reset switch 19B after a certain time has elapsed since the display illumination light source 151 was turned on is turned off. Used as the command 19b, the display illumination light source 151 is turned off in response to the turn-off command 19b to save energy. As a result, the consumption of the battery capacity due to the lighting of the display illumination light source 151 built in the device is reduced, the life of the built-in battery is extended, the battery capacity is reduced, and the battery cost is reduced. Can be achieved.

According to a twenty-fourth aspect of the present invention, which is achieved by the present invention, in order to solve the above-mentioned problems, the twentieth or twenty-first aspect of the present invention is described.
In the fluid leakage detection device 10 described in the above, the display means 15 is configured to perform the opening operation of the shut-off valve according to the lighting instruction 19a generated when an existing shut-off valve opening / closing switch 19C is pressed. The display illumination light source 151 is turned on to display the integrated value of the current fluid flow rate data 11a, and the display illumination light source 151 is turned on in response to a turn-off command 19b received after a certain period of time has elapsed since the display illumination light source 151 was turned on.
Has a hardware configuration configured to execute control for turning off the light.

According to the twenty-fourth aspect, in addition to the effect of the twentieth or twenty-first aspect, the integrated value data of the current fluid flow rate data 11a obtained by the fluid flow rate measuring means 11 or the current fluid flow rate data 11a The minimum flow rate data 12a_max and the minimum leak rate data 12a_min obtained by the flow rate calculating means 12 and stored in the storage means 13 are calculated based on the leakage flow rate (LP gas leakage flow rate) and the like. In addition to displaying the required time only for a short time on the display means 15 as information relating to the cause of the micro leak warning, the existing shut-off valve opening / closing switch 19 after a certain time has elapsed since the display illumination light source 151 was turned on.
The signal of pressing C is used as the light-off instruction 19b, and the display illumination light source 151 can be turned off in response to the light-off instruction 19b to save energy. As a result, the display illumination light source 151 built in the device can be used. It is possible to reduce the consumption of the battery capacity due to lighting, prolong the life of the built-in battery, reduce the battery capacity, and reduce the battery cost.

According to a twenty-fifth aspect of the present invention for solving the above-mentioned problem, the electronic gas meter 20 using the fluid leak detecting device 10 according to any one of the fourteenth to twenty-fourth aspects, The amount of gas used is measured, the supply of gas supplied to the secondary gas supply system is detected, and the supply of gas is shut off, and the supply abnormality of gas supplied to the secondary gas supply system is released. In the electronic gas meter 20 that detects the fact that the gas supply has been resumed, the gas leak detection device 10 and the gas appliances 30,..., 30 connected to the gas supply path 31 are operated to promote combustion operation. A hardware configuration including means 32 and a gas shutoff valve 33 provided in the gas supply path 31 and temporarily shutting off the gas supply in the gas supply path 31 according to the gas shutoff control is provided.

According to the twenty-fifth aspect of the present invention, in addition to the effect of any one of the fourteenth to twenty-fourth aspects, when a security service such as maintenance management for a minute leak warning is performed, a fluid flow rate measuring means is provided. 11 is the integrated value data of the current fluid flow rate data 11a obtained by the fluid flow rate measuring means 11 or the data of the maximum value of the minute leakage flow rate which is obtained by the flow rate calculating means 12 and stored in the storage means 13 based on the current fluid flow rate data 11a obtained by the fluid flow rate measuring means 11. At least one of the data 12a_max and the minute leak flow rate minimum value data 12a_min can be displayed on the display means 15. On the other hand, in addition to the count information of the leak timer, the gas flow rate Q flowing in the apparatus is sampled in a predetermined manner. The integrated value data of the current fluid flow data 11a obtained by the fluid flow measuring means 11 obtained by measuring at the timing Tsmpl. Motor or fluid flow rate measurement means 1,
The flow rate calculating means 12 obtains at least one of the data 12a_max of the maximum value of the minute leakage flow rate and the data 12a_min of the minimum value of the minute leakage flow rate, which are obtained by the flow rate calculating means 12 and held in the storage means 13 based on the current fluid flow rate data 11a obtained by 1.
A portable terminal having an external communication function such as a data terminal brought by a maintenance worker can be connected to an external communication port (the above-described 5) provided in a fluid leak detection device 10 or an electronic fluid meter described later.
Bit port) to collect information on the cause of the micro leak warning in the form of a message, and to collect information on the cause of the micro leak warning, such as the flow rate of fluid gas leakage over the period during which the micro leak judgment process was performed. Collection becomes possible, and it is possible to improve the customer supportability in which the point of occurrence of a minute leak of gas can be found on the user side at an early stage, and the situation of minute leak of the gas supplied to the secondary gas supply system can be improved. Optimum treatment can be performed promptly without waiting for the customer, and the ability to deal with the customer can be improved. As a result, the gas equipment 30,
,.., 30 with high customer satisfaction. In addition, the count information of the leak timer and the integrated value data of the current fluid flow rate data 11a obtained by the fluid flow rate measuring means 11 are displayed on the display means 15 as information relating to the cause of the minute leak warning such as the gas leak flow rate, and only the required time is shortened. In addition to displaying only the time, a press-down signal of the shutoff test switch 19A, the remaining amount management reset switch 19B, or the shutoff valve opening / closing switch 19C is used as a turnoff command 19b.
b, the display illumination light source 151 can be turned off to save energy. As a result, consumption of battery capacity due to lighting of the display illumination light source 151 built in the device can be reduced, and the built-in battery can be reduced. It is possible to extend the life, reduce the battery capacity, and reduce the battery cost.

[0074]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, an embodiment of an electronic gas meter for executing a micro leak detection method described later will be described.

FIG. 1 is a functional block diagram for explaining one embodiment of an electronic gas meter for executing the micro leak detection method according to the present invention.

The electronic gas meter 20 as one form of the electronic fluid meter is used by a user who uses LP gas (user = subscriber).
Is generally provided separately for each general household, store, and factory equipment, and as shown in FIG.
Measure the amount of P gas and supply L to the secondary gas supply system.
An abnormal supply of P gas (one type of fluid) is detected as a shut-off event to shut off the supply of LP gas, and a supply abnormality such as a gas leak of the LP gas supplied to the secondary gas supply system is released (specifically, Has a function of detecting (repairing) a gas leak location and restoring (restarting) LP gas supply, and includes a gas leak detection device 10, a combustion control unit 32, a gas shutoff valve 33, and a flow sensor described below. 34, has a hardware configuration centered on a built-in battery as a power source.

The electronic gas meter has a built-in gas leak detection device 10 and connects billing information such as the measured amount of LP gas used and security information such as the above-mentioned minute leak warning via a communication line such as a telephone line. It has a function to notify the gas management entity and security entity in a message format.

Such an electronic gas meter is generally provided separately for each general household, store, or factory facility which is the subject (user) of using LP gas.

Specifically, the gas management entity and the security entity are:
When the gas leak detection device 10 is installed for each user such as a general household, a store, and a factory facility, the gas leakage for each general home, store, and the factory facility is performed using a no-ringing communication method which is a form of NTT telephone service. The user accesses each of the detection devices 10 and collects the above-mentioned security information from each user via a telephone line to execute various security services.

Similarly, when an electronic gas meter is installed in each of ordinary households, shops, and factory facilities, the gas management entity and the security entity use the no-ringing communication system, which is a form of NTT telephone service, to provide general household and security services. They access electronic gas meters for each store and factory equipment, collect billing information and security information from each user via telephone lines, and execute billing and various security services.

In such a mode of use for the electronic gas meter, the gas management entity and the security entity that have received the minute leak warning from the gas leak detection device 10 or the electronic gas meter via the above-described notification means such as the no-ringing communication correspond to the above. A maintenance person is sent to a user where the gas leak detection device 10 or the electronic gas meter is installed.

At this time, a portable terminal having an external communication function such as a data terminal brought by the maintenance staff of the LP gas supply company is connected to an external communication port (specifically, RS232C) provided in the gas leak detection device 10 or the electronic gas meter. The information on the cause of the minute leak warning that can be collected in the form of a message by connecting to a 5-bit communication port that can execute the communication method) is limited to the count information of the leak timer. Information on the cause of the minute leak warning such as the leaking flow rate (in this case, the leaking rate of LP gas) is collected.

More specifically, the electronic gas meter 20 is supplied, for example, to a secondary fluid supply pipe 31 B that is provided downstream (subscriber side) of the LP gas shutoff valve 33.
The flow rate of the P gas is detected using a flow rate pulse generated by a flow rate sensor 34 interposed in the secondary fluid supply pipe 31B, and it is determined whether there is a supply abnormality such as a gas leak of the LP gas, and the LP gas is detected. When it is determined that a supply abnormality such as a gas leak has occurred, a minute leak warning is issued and the supply of the LP gas is shut off.

In the following description, a portable terminal having an external communication function is represented by a data terminal,
, 30 are represented by gas water heaters 30, ..., 30; display illumination light source 151 is represented by backlight light source 151;
A typical example of the display means 15 is a liquid crystal display 15.

The combustion control means 32 has a function of operating the gas water heaters 30,..., 30 connected to the LP gas supply pipe 31 to control the combustion operation. It is realized by a microcomputer capable of executing a program code describing a detection method.

The gas shut-off valve 33 is connected to the LP gas supply pipe 3.
1 and has a function of temporarily shutting off the LP gas supply in the LP gas supply pipe 31 in accordance with the gas shutoff control performed by the combustion control means 32. Specifically, using a solenoid valve Has been realized.

The flow rate sensor 34 is connected to the secondary fluid supply pipe 3
1B, which has a function of generating a flow pulse corresponding to the flow rate of the LP gas, a reed switch type flow sensor,
It is possible to use a flow sensor, a fluidic element (pressure sensor), a membrane type flow sensor, or an ultrasonic type flow sensor. In the following description, the flow sensor 34 will be represented by the flow sensor 34.

As described above, the electronic gas meter 20
According to the present invention, when performing a security service such as maintenance management for a small leak warning of LP gas, current fluid flow rate data (flow rate pulse) required by a fluid flow rate measuring means 11 described later.
Based on the integrated value data of 11a or the current fluid flow rate data (flow rate pulse) 11a obtained by the fluid flow rate measuring means 11, the flow rate calculating means 12 described later obtains and the maximum value of the minute leakage flow rate stored in the storage means 13 described later. Data 1
2a_max and data 12a_min of the minimum leak flow rate can be displayed on the liquid crystal display 15 described later. On the other hand, in addition to the count information of the leak timer, the LP gas flow rate Q flowing in the electronic gas meter 20 is reduced by 60%. The integrated value data of the current fluid flow rate data (flow rate pulse) 11a obtained by the fluid flow rate measuring means 11 obtained by measuring at the predetermined sampling timing Tsmpl such as the minute, or the current fluid flow rate data (flow rate pulse) 11a obtained by the fluid flow rate measuring means 11 Is calculated by the flow rate calculating means 12 on the basis of the
2a_max and data 12a_min of the minimum leakage flow rate
A portable terminal having an external communication function such as a data terminal brought by a maintenance staff of an LP gas supply company is connected to an external communication port (RS23 having a data length of 5 bits described above) provided in a gas leak detection device 10 or an electronic gas meter described later.
2C communication port) to collect information as to the cause of the micro leak warning in the form of a message, and to determine the cause of the micro leak warning such as the flow rate of the LP gas gas over the period during which the micro leak judgment process was performed. Information can be collected, and the point of occurrence of a minute leak of LP gas (forgetting to close the gas stopper, forgetting to turn off the gas water heater 30,. This makes it possible to quickly perform the most appropriate treatment for the situation of minute leakage of the LP gas supplied to the secondary gas supply system without having to wait for the customer, thereby improving the ability to respond to the customer. As a result, security services with high customer satisfaction for the gas water heaters 30,... 30, can be implemented. In addition, the count information of the leak timer and the integrated value data of the current fluid flow data (flow pulse) 11a obtained by the fluid flow measuring means 11 are displayed on the liquid crystal display 15 as information relating to the cause of a minute leak warning such as a gas leak flow rate. In addition to displaying only the time required for identifying and repairing a leak location for a short time, a shut-off test switch (push switch) 19A, a remaining amount management reset switch (push switch) 19B, or a shut-off valve opening / closing switch (push) will be described later. Switch) 19C is used as a turn-off command 19b, and the backlight light source 151 can be turned off in accordance with the signal of the turn-off command 19b to save energy. As a result, the back light built into the device can be saved. Reduces battery capacity consumption due to lighting of light source 151 Life of the pond life, reduction in battery capacity, so that it is possible to reduce the battery cost by using a small inexpensive battery having battery capacity.

Next, an embodiment of a gas leak detecting device 10 for executing a minute leak detecting method described later will be described.

FIG. 1 is a functional block diagram for explaining an embodiment of a gas leak detecting device (an embodiment of a fluid leak detecting device) 10 for executing the micro leak detecting method according to the present invention.

The gas leak detection device 10 shown in FIG.
A supply abnormality such as a gas leak of the LP gas supplied to the secondary-side fluid supply pipe 31B provided on the downstream side (subscriber side) is detected as a cutoff event, and the supply of the LP gas is cut off. A function of detecting that a supply abnormality such as a gas leak of the LP gas supplied to the secondary-side fluid supply pipe 31B has been released (specifically, repairing a gas leak location) and restoring the supply of the LP gas. It has a fluid flow rate measuring means 11, a flow rate calculating means 12, a storage means 13, a liquid crystal display 15, a display switch 14, a timer 16, a micro leak continuation frequency evaluating means 17, a micro leak warning means 18, and a battery incorporated as a power source. The main hardware configuration is used.

Further, the gas leak detection device 10 has a function of reporting security information such as the above-mentioned minute leak warning to a gas management entity or a security entity connected via a communication line such as a telephone line in the form of a message. I have.

[0093] Such a gas leak detection device 10 is an LP
Generally, it is generally provided separately for each general household, store, or factory equipment that is the gas use subject (user).

Specifically, the gas management subject and the security subject are:
When the gas leak detection device 10 is installed for each user such as a general household, a store, and a factory facility, the gas leakage for each general home, store, and the factory facility is performed using a no-ringing communication method which is a form of NTT telephone service. The user accesses each of the detection devices 10 and collects the above-mentioned security information from each user via a telephone line to execute various security services.

Similarly, when an electronic gas meter is installed in each of ordinary households, stores, and factory facilities, the gas management entity and the security entity use the no-ringing communication system, which is a form of NTT telephone service, for general households and security. They access electronic gas meters for each store and factory equipment, collect billing information and security information from each user via telephone lines, and execute billing and various security services.

In such a mode of use for such a gas leak detecting device 10, the gas management subject which receives a minute leak warning from the gas leak detecting device 10 or the electronic gas meter via the above-mentioned reporting means such as the no ringing communication, etc. The security entity sends a maintenance person to the user where the corresponding gas leak detection device 10 or electronic gas meter is installed.

At this time, a portable terminal having an external communication function such as a data terminal brought by a maintenance person of the LP gas supply company is connected to an external communication port (specifically, RS232C) provided in the gas leak detection device 10 or the electronic gas meter. The information on the cause of the minute leak warning that can be collected in electronic form by connecting to a 5-bit communication port that can execute the communication method is limited to the count information of the leak timer. Information on the cause of the minute leak warning such as the leaking flow rate (in this case, the leaking rate of LP gas) is collected.

The fluid flow rate measuring means 11 has a function of measuring the fluid flow rate Q flowing in the electronic gas meter 20 at a predetermined sampling timing Tsmpl such as 60 minutes to obtain current fluid flow rate data (flow rate pulse) 11a. Specifically, it is realized by the aforementioned microprocessor.

The flow rate calculating means 12 calculates the maximum value 12a_max of the minute leak flow rate and the minimum value 1 of the minute leak flow rate based on the current fluid flow rate data (flow rate pulse) 11a.
It has a function of calculating 2a_min, and is specifically realized by the aforementioned microprocessor.

The storage means 13 stores data 12a_max of the maximum value of the minute leakage flow rate and data 12a_m of the minimum value of the minute leakage flow rate based on the current fluid flow rate data (flow rate pulse) 11a.
It has a function of storing “in”, and is specifically realized by an EEPROM accessible by the microprocessor. In the following description, the storage unit 13 is EEP
It will be represented by the ROM 13.

The display switch 14 is for selecting and displaying a request 1
4a is a push switch having a function of generating the 4a.

By providing such a display switch (push switch) 14, when performing a security service such as maintenance management for a small leak warning of LP gas,
The integrated value data of the current fluid flow data (flow pulse) 11a obtained by the fluid flow measuring means 11, or the data 12a of the maximum value of the minute leakage flow held in the storage process
_max and the minimum leakage flow rate data 12a_min can be read out and displayed on the liquid crystal display 15 in response to the signal of the selection display request command 14a, so that the man-machine interface can be improved. In addition to the count information, the current fluid flow rate data (flow rate pulse) 11 obtained by the fluid flow rate measuring means 11 obtained by measuring the fluid flow rate Q flowing in the electronic gas meter 20 at a predetermined sampling timing Tsmpl such as 60 minutes.
The data 12a_max of the minimum leak flow rate and the minimum leak flow rate minimum value 12a_max held based on the current fluid flow rate data (flow rate pulse) 11a based on the integrated value data of a or the current fluid flow rate data (flow rate pulse) 11a Data 1
2a_min is converted to a gas leak detection device 10 described later or an external communication port provided in an electronic gas meter (a 5-bit data length described above) by using a portable terminal having an external communication function such as a data terminal brought by a maintenance person of an LP gas supply company. Connected to an RS232C communication port having a communication terminal, and can be collected in the form of a message in the form of a message in accordance with the signal of the selection display request command 14a as information relating to the cause of the micro leak warning, and the LP over the period in which the micro leak judgment processing was performed. It is possible to collect information on the cause of a minute leak warning such as gas leak flow rate (LP gas leak flow rate), etc., and to detect the location of a supply abnormality such as LP gas leak (LP gas minute leak) The customer side can easily find out on the user side that they have forgotten to close or forget to turn off the gas water heater 30,. As a result, it is possible to quickly carry out an optimal treatment for a supply abnormality (small leak of LP gas) and to improve the ability to respond to customers. Vessels 30, ..., 3
This makes it possible to implement a security service with a high degree of customer satisfaction.

The liquid crystal display 15 has a function of displaying the data 12a_max of the maximum value of the minute leakage flow and the data 12a_min of the minimum value of the minute leakage flow stored in the EEPROM 13 in accordance with the signal of the selection display request command 14a. ing.

The liquid crystal display 15 also has a function of displaying the current fluid flow data (flow pulse) 11a in real time in response to the signal of the selection display request command 14a.

By providing such a function, LP
When performing a security service such as a maintenance management for a gas leak warning, the integrated value data of the current fluid flow data (flow pulse) 11a required by the fluid flow measuring means 11 can be read out in real time and displayed on the liquid crystal display 15. The man-machine interface can be improved. On the other hand, in addition to the count information of the leak timer, the fluid flow rate Q flowing in the electronic gas meter 20 is reduced to a predetermined sampling timing T such as 60 minutes.
A portable terminal having an external communication function, such as a data terminal brought by a maintenance staff of an LP gas supply company, based on the integrated value data of the current fluid flow rate data (flow rate pulse) 11a determined by the fluid flow rate measuring means 11 measured by smpl. The external communication port (RS having a data length of 5 bits described above) provided in the gas leak detection device 10 or the electronic gas meter described later
232C communication port), it becomes possible to collect in real time as information on the cause of the micro leak warning in the form of a message, and the LP over the period of performing the micro leak judgment processing
Information on the cause of a small leak warning such as a gas leak flow rate (LP gas leak flow rate) can be promptly collected in real time, thereby shortening the time for which a customer has to wait. Improve customer support so that it is possible to detect in real time the location of a supply abnormality such as gas leakage (small leakage of LP gas) (forgetting to close the gas cock, forgetting to turn off the gas water heater 30, ..., 30). As a result, it is possible to quickly perform the most appropriate treatment for a supply abnormality (small leak of LP gas) without having to wait for the customer, thereby improving the ability to deal with the customer. A security service with a high degree of customer satisfaction for the water heaters 30,... 30, can be implemented in real time.

The liquid crystal display 15 also has a function of displaying the integrated value of the current fluid flow data (flow pulse) 11a on the liquid crystal display 15.

By providing such a function, the count information of the leak timer and the integrated value data of the current fluid flow rate data (flow rate pulse) 11a obtained by the fluid flow rate measuring means 11 are converted into the leak flow rate (LP gas leak rate). In addition to causing the liquid crystal display 15 to display only the time required for identification and repair of the leak location for a short period of time as information on the cause of the minute leak warning such as As a result, the consumption of the battery capacity built in the device is reduced, the life of the built-in battery is extended,
Battery capacity can be reduced, and battery cost can be reduced by using an inexpensive battery having a small battery capacity.

According to a twentieth aspect of the present invention for solving the above-mentioned problems, the present invention provides a gas leak detecting device according to the nineteenth aspect.
Is a hardware centered on a backlight light source 151 that illuminates a display screen in response to a signal of a lighting command 19a generated when the existing operation switch 19 is pressed and turns off the light in response to a signal of a turning-off command 19b. It has a configuration.

According to the twentieth aspect, in addition to the effect of the nineteenth aspect, the count information of the leak timer and the integrated value of the current fluid flow rate data (flow rate pulse) 11a obtained by the fluid flow rate measuring means 11 The data is stored in the leak rate (L
(Liquid flow rate of P gas) and the like, the liquid crystal display 15 displays only the time required for identifying and repairing the leak location for a short period of time as information on the cause of the minute leak warning, and a certain period of time after the backlight light source 151 is turned on. In response to the signal of the turn-off command 19b generated by the existing operation switch 19 after the lapse of (5 minutes), the backlight light source 151 can be turned off in order to save energy. As a result, the backlight light source 151 can be turned off. It is possible to reduce consumption of battery capacity due to lighting, prolong the life of the built-in battery, reduce battery capacity, and reduce battery cost by using an inexpensive battery with small battery capacity.

The liquid crystal display 15 is turned on after a certain time (5 minutes) has passed since the backlight light source 151 was turned on.
It also has a function of executing control to turn off the backlight light source 151 in response to the received signal of the turn-off instruction 19b.

By providing such a function, the flow rate calculating means based on the integrated value data of the current fluid flow rate data (flow rate pulse) 11a obtained by the fluid flow rate measuring means 11 or the current fluid flow rate data (flow rate pulse) 11a. 12 is obtained, and at least one of the data 12a_max of the maximum value of the minute leakage flow rate and the data 12a_min of the minimum value of the minute leakage flow rate held in the EEPROM 13 is information on the cause of the minute leakage warning such as the leakage flow rate (LP gas leakage flow rate). In addition to causing the liquid crystal display 15 to display only the time required for identifying and repairing the leak location for a short time, the existing operation switch 19 is generated after a lapse of a fixed time (5 minutes) from the lighting of the backlight light source 151. The backlight light source 151 responds to the signal of the light-off instruction 19b.
To save energy by turning off the backlight. As a result, the backlight light source 15 built in the device can be saved.
In order to reduce the consumption of battery capacity due to the lighting of No. 1, prolong the life of the built-in battery, reduce the battery capacity, and reduce the battery cost by using an inexpensive battery with a small battery capacity. Become.

The liquid crystal display 15 responds to a signal in response to a light-up command 19a generated when a cut-off test switch (push switch) 19A already provided in the electronic gas meter 20 for executing a cut-off test is pressed. The backlight light source 151 is turned on to display the integrated value of the current fluid flow rate data (flow rate pulse) 11a.
It also has a function of executing control to turn off the backlight light source 151 in response to the received signal of the turn-off instruction 19b.

By providing such a function, the flow rate calculating means based on the integrated value data of the current fluid flow rate data (flow rate pulse) 11a obtained by the fluid flow rate measuring means 11 or the current fluid flow rate data (flow rate pulse) 11a. 12 is obtained, and at least one of the data 12a_max of the maximum value of the minute leak flow rate and the data 12a_min of the minimum value of the minute leak flow rate held in the EEPROM 13 is information on the cause of the minute leak warning such as the leak flow rate (LP gas leak rate). In addition to displaying on the liquid crystal display 15 only the time required for identifying and repairing a leak location for a short time, an existing shut-off test switch (push switch) after a certain time (5 minutes) has elapsed since the backlight light source 151 was turned on. ) The pressing signal of 19A is used as the light-off instruction 19b, and this light-off instruction 1 The backlight light source 151 can be turned off in response to the signal b to save energy, and as a result, consumption of battery capacity due to lighting of the backlight light source 151 built in the device can be reduced, It is possible to extend the life of the built-in battery, reduce the battery capacity, and reduce the battery cost by using an inexpensive battery with a small battery capacity.

The liquid crystal display 15 is generated when the remaining amount management reset switch (push switch) 19B already provided in the electronic gas meter 20 is pressed in order to execute the initialization of the remaining amount management of the LP gas cylinder. Backlight light source 15 in response to a signal
1 is turned on and the current fluid flow rate data (flow rate pulse) 11a
Is displayed, and after a predetermined time (5 minutes) has passed since the backlight light source 151 was turned on, the received light-off instruction 19 is received.
It also has a function of executing control to turn off the backlight light source 151 in accordance with the signal b.

By providing such a function, the flow rate calculating means based on the integrated value data of the current fluid flow rate data (flow rate pulse) 11a obtained by the fluid flow rate measuring means 11 or the current fluid flow rate data (flow rate pulse) 11a. 12 is obtained, and at least one of the data 12a_max of the maximum value of the minute leakage flow rate and the data 12a_min of the minimum value of the minute leakage flow rate held in the EEPROM 13 is information on the cause of the minute leakage warning such as the leakage flow rate (LP gas leakage flow rate). In addition to displaying on the liquid crystal display 15 only the necessary time required for identification and repair of a leak location for a short time, an existing remaining amount management reset switch (e.g., a predetermined time (5 minutes) after the backlight light source 151 is turned on (5 minutes)) Push switch) 19B push signal to turn off signal 19
b, the backlight light source 151 can be turned off in response to the signal of the light-off instruction 19b to save energy. As a result, the battery caused by the lighting of the backlight light source 151 built in the device can be achieved. It is possible to reduce the consumption of capacity, prolong the life of the built-in battery, reduce the battery capacity, and reduce the battery cost by using an inexpensive battery with a small battery capacity.

The liquid crystal display 15 emits a lighting command generated when a shutoff valve opening / closing switch (push switch) 19C already provided in the electronic gas meter 20 is pressed in order to open the gas shutoff valve 33. 19a
The backlight light source 151 is turned on in response to the signal, and the integrated value of the current fluid flow rate data (flow rate pulse) 11a is displayed. Also has a function of executing control to turn off the backlight light source 151 in response to the signal.

By providing such a function, the flow rate calculating means based on the integrated value data of the current fluid flow rate data (flow rate pulse) 11a obtained by the fluid flow rate measuring means 11 or the current fluid flow rate data (flow rate pulse) 11a. 12 is obtained, and at least one of the data 12a_max of the maximum value of the minute leakage flow rate and the data 12a_min of the minimum value of the minute leakage flow rate held in the EEPROM 13 is information on the cause of the minute leakage warning such as the leakage flow rate (LP gas leakage flow rate). In addition to displaying only the time required for identifying and repairing the leak location on the liquid crystal display 15 for a short time, the existing shut-off valve opening / closing switch (push Switch) 19C is used as a light-off instruction 19b. The backlight light source 151 can be turned off in response to the signal b to save energy, and as a result, consumption of battery capacity due to lighting of the backlight light source 151 built in the device can be reduced, It is possible to extend the life of the built-in battery, reduce the battery capacity, and reduce the battery cost by using an inexpensive battery with a small battery capacity.

The timer 16 operates for a predetermined period (specifically,
24 hours) has a function of counting Tc, and is specifically realized by using a timer IC 16.

The micro-leakage continuation frequency evaluating means 17 determines that the current fluid flow rate data (flow rate pulse) 11a has a predetermined period (24 hours) Tc as a unit period, and continues the current fluid flow rate data (24 hours). Every time the flow rate pulse 11a is detected, the detected continuous predetermined period (24 hours) Tc is counted as one day to generate minute leak continuation frequency data 17a, and the current fluid flow rate data (flow rate pulse) 1a is generated.
If 1a is not detected during a predetermined period (60 minutes), it has a function of clearing the minute leak continuation frequency data 17a and returning it to an initial value (= zero). It is realized using.

By providing such a function, the current fluid flow rate data (flow rate pulse) 11a obtained by the fluid flow rate measuring means 11 is set to a predetermined period (24 hours) Tc as a unit period. Each time the current fluid flow rate data (flow rate pulse) 11a is continuously detected, the detected continuous predetermined period (24 hours) Tc is counted as one day to generate the minute leak continuation frequency data 17a. When the current fluid flow rate data (flow rate pulse) 11a obtained by the fluid flow rate measuring means 11 is not detected during the predetermined period (60 minutes), the minute leak continuation frequency data 17a is cleared (count value reset = initialization). The hardware configuration is set so as to return to the initial value (= zero), and a predetermined period (2
4 hours) Since the minute leak continuation frequency evaluation means 17 can easily optimize the Tc and the unit period with the number of steps of parameter adjustment according to the use environment, the minute leak warning over the period in which the minute leak determination process is performed. Is performed with a high degree of accuracy that is optimal for the use environment, and the current fluid flow rate data (flow rate pulse) 11a obtained by the fluid flow rate
Time) When the detection is not detected during Tc, the minute leak warning can be canceled by using the minute leak continuation frequency evaluation means 17, and therefore, the leak flow rate of LP gas (LP
It is possible to optimize the information related to the cause of micro leak warnings such as gas leak flow rate) in accordance with the usage environment, and to collect highly reliable information according to the usage environment. Can be performed, the current fluid flow rate data (flow rate pulse) obtained by the fluid flow rate measuring means 11 can be obtained.
If 11a is detected during a predetermined period (24 hours) Tc, a location where a supply abnormality such as gas leakage of LP gas (small leakage of LP gas) occurs (forgetting to close the gas plug, gas water heater 30,
..., forgetting to turn off 30 etc.) at an early stage with a high degree of accuracy according to the usage environment, thereby improving customer supportability. It is possible to improve the optimal treatment for abnormal supply (small LP gas leakage). Continuation frequency evaluation means 17
, Which can be performed promptly with high accuracy and improve the ability to respond to customers. As a result, security services with high customer satisfaction for the gas water heaters 30,... Can be implemented with high reliability according to the use environment.

The minute leak warning means 18 has a function of displaying, on the liquid crystal display 15 or the like, that a minute leak has occurred when the number of days indicated by the minute leak continuation frequency data 17a exceeds a predetermined number of days. Is realized using the aforementioned microprocessor.

By providing such a function, the current fluid flow rate data (flow rate pulse) 11a obtained by the fluid flow rate measuring means 11 has a predetermined period (24 hours) Tc as a unit period, and this unit period (24 hours) Each time the current fluid flow rate data (flow rate pulse) 11a is not detected continuously,
While the continuous predetermined period (24 hours) Tc that has not been detected is counted as one day to generate the minute leakage continuation frequency data 17a, the minute leakage continuation frequency is generated when the minute leakage continuation frequency data 17a exceeds the predetermined number of days. The hardware configuration is such that the data 17a is cleared (reset of the count value = initialization) and returned to the initial value (= zero) for a predetermined period (2
4 hours) Since the minute leak continuation frequency evaluation means 17 can easily optimize the Tc and the unit period with the number of steps of parameter adjustment according to the use environment, the minute leak warning over the period in which the minute leak determination process is performed. Is executed with high accuracy that is optimal for the use environment, and when the minute leak continuation frequency data 17a exceeds a predetermined number of days, the minute leak warning can be canceled using the minute leak continuation frequency evaluation means 17, and therefore, the minute leak warning can be canceled. Micro leak warning means 1 that leak has occurred
8 makes it possible to optimize the information on the cause of the micro leak warning that is notified by the user in accordance with the use environment, and to collect highly reliable information in accordance with the use environment. When the minute leak continuation frequency data 17a exceeds a predetermined number of days, a minute leak warning that the minute leak warning unit 18 notifies that a minute leak has occurred is executed, and supply abnormality such as gas leakage of LP gas is performed. (Low leakage of LP gas) (Forgetting to close gas tap, gas water heater 3
It is possible to improve the customer supportability, which enables early detection of 0,..., 30 forgotten, etc.) with high accuracy according to the usage environment, and to take optimal measures for abnormal supply (small leakage of LP gas). Microleakage continuation frequency evaluation means 1
7 can be performed quickly and with high accuracy, and the ability to respond to customers can be improved.
As a result, security services with high customer satisfaction for the gas water heaters 30,..., 30 can be implemented with high reliability according to the use environment.

As described above, the gas leak detection device 1
According to 0, when performing a security service such as maintenance management for a minute leak warning of LP gas, the current fluid flow rate data (flow rate pulse) 11a required by the fluid flow rate measuring means 11 is provided.
Is calculated by the flow rate calculating means 12 based on the integrated value data of the above or the current fluid flow rate data (flow rate pulse) 11a.
Data 12a_max of the maximum value of the minute leakage flow and data 12a of the minimum value of the minute leakage flow held in the ROM 13.
at least one of _min can be displayed, and in addition to the count information of the leak timer,
The integrated value data of the current fluid flow rate data (flow rate pulse) 11a obtained by the fluid flow rate measuring means 11 obtained by measuring the fluid flow rate Q flowing in the electronic gas meter 20 at a predetermined sampling timing Tsmpl such as 60 minutes, or the current fluid flow rate The flow rate calculating means 12 obtains the data (flow rate pulse) 11a based on the data (flow rate pulse) 11a, and determines at least one of the data 12a_max of the maximum value of the minute leakage flow rate and the data 12a_min of the minimum value of the minute leakage flow rate held in the EEPROM 13 by the LP gas supply company. A portable terminal having an external communication function such as a data terminal brought by a maintenance person can be connected to an external communication port (RS having a data length of 5 bits described above) provided in a gas leak detection device 10 or an electronic gas meter described later.
232C communication port), which can be collected in the form of telegrams as information on the cause of the minute leak warning, and the minute amount of the LP gas leakage flow (LP gas leakage flow) over the period in which the minute leak judgment process was performed. Information on the cause of the leak warning can be collected, and the point of occurrence of a supply abnormality such as gas leakage of LP gas (small leakage of LP gas) (forgetting to close the gas plug, forgetting to turn off the gas water heater 30, ..., 30) Etc.) on the user side at an early stage, it is possible to promptly perform the most appropriate treatment for a supply abnormality (small leakage of LP gas), and to improve the customer response ability. A security service with high customer satisfaction for the water heaters 30,..., 30 can be implemented.

Next, an embodiment of a minute leak detecting method executed by the gas leak detecting device 10 and the electronic gas meter of FIG. 1 will be described.

In the gas leak detecting device 10 and the electronic gas meter 20 shown in FIG. 1, the flow rate of the LP gas supplied to the secondary gas supply system connected to the downstream side (subscriber side) of the LP gas cutoff valve 33. (Unit is [liter / hour])
Is detected using the flow rate pulse generated by the flow sensor 34 provided in the secondary gas supply system, and is monitored using the leakage timer 16 (specifically, 60 minutes, 24 hours, 30 days). Are counted, and when a flow pulse is received within a monitoring period (specifically, 60 minutes), it is determined that there is a minute leak, and when a flow pulse is not received for a monitoring period or more. Then, it is determined that there is no minute leakage, and the count value of the leakage timer is returned to the initial value (= zero).

In addition, if the situation in which it is determined that there is a minute leak has continued for 24 hours, the leak timer is incremented and a process of counting the number of days of the minute leak is executed. In this case, a determination is made as to whether or not there is a supply abnormality such as a gas leak of the LP gas that determines that a minute leak has occurred. If it is determined that the gas is leaking, a small leak warning is issued and the LP gas supply is shut off.

FIG. 2 is a flowchart for explaining an embodiment of a minute leak detecting method executed by the gas leak detecting device 10 and the electronic gas meter of FIG.

The micro leak detection method according to the present embodiment employs a method for detecting a gas leak of the LP gas supplied to the secondary fluid supply pipe 31B provided downstream (subscriber side) of the LP gas shut-off valve 33. The supply abnormality is detected as a cutoff event, the supply of the LP gas is cut off, and the supply abnormality such as the gas leakage of the LP gas supplied to the secondary-side fluid supply pipe 31B is released (specifically, the gas leakage point is detected). LP)
It has a function of returning the supply of gas, and has a flow rate calculation step (step S1), a micro leak flow rate calculation step (step S4, step S4-1, step S5, step S6), and a storage step (step S2-1, step S4). -1, step S6), a minute leak timer process (step S2-1), and a display process (steps T1 to T5).

The flow rate calculating step (step S 1) is executed by the flow rate calculating means (the above-mentioned microprocessor) 12, and the fluid flow rate Q flowing in the electronic gas meter 20 is
(Measured flow rate (unit: [L / h (liter / hour)]) in FIG. 2) is measured at a predetermined sampling timing Tsmpl such as 60 minutes to obtain a current fluid flow rate Q. Described by executable program code.

The micro-leakage flow rate calculating step (step S4, step S4-1, step S5, step S6) is executed by the micro-leakage continuation frequency evaluating means 17 and executed by the flow rate calculating means (microprocessor described above) 12. Based on the current fluid flow rate Q obtained in step S1, a micro leak determination process (steps S2, S
3) is executed and the current fluid flow rate Q is greater than 0 and 21
The case where it is less than [L / h] is determined as the state of minute leakage (NO in step S2 → YES in step S3), and the step of obtaining the maximum value 12a_max of the minute leakage flow rate (YE in step S4)
S → Step S4-1) and the minimum value 12a of the minute leakage flow rate
Step for calculating _min (NO in step S4 → step S5)
YES → Step S6), and is described by a program code executable by the microcomputer.

Storage Step (Step S2-1, Step S2-1)
4-1. Step S6) is a step executed by the microprocessor 12 to store the maximum value 12a_max of the minute leak flow rate and the minimum value 12a_min of the minute leak flow rate based on the current fluid flow rate Q in the EEPROM 15. Is described by a program code that can be executed by the microcomputer.

Such a storage step (step S2-1,
By providing steps S4-1 and S6), when performing a security service such as maintenance management for a minute leak of LP gas, the integrated value ΣQ of the current fluid flow rate Q obtained by the fluid flow rate measuring means 11 or storage. The maximum value 12a_m of the minute leakage flow rate stored in the process (Step S2-1, Step S4-1, Step S6)
ax and the minimum value 12a_min of the minute leakage flow rate can be read out and displayed (step T3). On the other hand, in addition to the count information of the leakage timer, the fluid flow rate Q flowing in the electronic gas meter 20 is determined in step S1. Step S4-1 or step S6 based on the integrated value ΣQ of the current fluid flow rate Q obtained by the fluid flow rate measuring means 11 obtained by measuring at the predetermined sampling timing Tsmpl such as 60 minutes or the current fluid flow rate Q obtained in step S1. The maximum value 12a_max of the micro leak flow rate stored in
And a minimum value 12a_min of the minute leak flow rate, by using a portable terminal having an external communication function such as a data terminal brought by a maintenance person of the LP gas supply company with a gas leak detection device 10 described later or an external communication port provided in an electronic gas meter ( Connected to the above-mentioned RS232C communication port having a data length of 5 bits) and collected in the form of a message as information on the cause of the micro leak warning, and during the micro leak determination processing steps (steps S2 and S3) Information on the cause of a small leak warning, such as the LP gas leakage flow rate (LP gas leakage flow rate),
Abnormal supply such as gas leakage of LP gas (small leakage of LP gas)
Of gas generation (forgetting to close the gas tap, gas water heater 30, ...,
30) and detect abnormal supply (LP
The most appropriate treatment for the situation (small gas leakage) can be promptly performed, and as a result, a sufficient security service for the gas water heaters 30,...

Micro leakage timer process (step S2-1)
Is a step executed by the timer 16, and is a step S
The current fluid flow rate Q obtained in step 1 is equal to the predetermined period (24 hours) Tc.
Is a unit period, and every time the current fluid flow rate data (flow rate pulse) 11a is not detected continuously during this unit period (24 hours), a continuous predetermined period (24
The method includes a step of generating minute leakage continuation frequency data 17a by counting (time) Tc as one day, and is described by a program code executable by the microcomputer.

Further, the minute leak timer process (step S2-
1) The step of clearing the minute leak continuation frequency data 17a and returning it to the initial value (= zero) when the current fluid flow rate Q obtained in step S1 is not detected during the predetermined period (24 hours) Tc. Contains.

As a result, the current fluid flow rate Q obtained in step S1 is set to a predetermined period (24 hours) Tc as a unit period,
Each time the current fluid flow rate data (flow rate pulse) 11a is not detected continuously during this unit period (24 hours), a continuous predetermined period (24 hours) Tc in which the current fluid flow rate data is not detected is counted as one day and minute leakage is detected. While the continuation frequency data 17a is generated, if the current fluid flow rate Q obtained in step S1 is not detected during the predetermined period (24 hours) Tc, the minute leak continuation frequency data 17a is cleared (count value reset = initial value). ) And return it to the initial value (= zero), and it is easy to optimize the predetermined period (24 hours) Tc and the unit period by man-hours for parameter adjustment according to the use environment. A minute leak warning is executed with high accuracy optimal for the use environment during the period in which the minute leak determination process (steps S2 and S3) is performed, and the current flow obtained in step S1 is determined. If the flow rate Q is not detected during the predetermined period (24 hours) Tc, the minute leak warning can be canceled, and therefore, the cause of the minute leak warning such as the LP gas leak flow rate (LP gas leak flow rate). Optimization in accordance with the use environment of high reliability information can be achieved, and thus highly reliable information can be collected in accordance with the use environment. If the current fluid flow rate Q is detected during a predetermined period (24 hours) Tc, a location where a supply abnormality such as a gas leak of the LP gas (a minute leak of the LP gas) occurs (forgetting to close the gas plug, the gas water heater 30, ..., 30, forgetting to erase, etc.) at an early stage with high accuracy according to the usage environment, and the optimum treatment for a supply abnormality (small leak of LP gas) can be quickly performed with high accuracy. result, A sufficient security service for the gas water heaters 30,... 30 can be implemented with high reliability according to the use environment.

The micro leak warning step is a micro leak warning means 1
8 is a process to be executed, and the micro leak continuation frequency data 1
A step of displaying, on the liquid crystal display 15 or the like, that a minute leak has occurred when 7a exceeds a predetermined number of days, is described by a program code executable by the microcomputer.

According to the micro leak warning process, step S1 is executed.
The current fluid flow rate Q obtained in the above is detected every time when the current fluid flow rate data (flow rate pulse) 11a is not detected in a predetermined period (24 hours) Tc as a unit period, and continuously during this unit period (24 hours). By counting the continuous predetermined period (24 hours) Tc, which was not present, as one day to generate the minute leakage continuation frequency data 17a, the minute leakage continuation frequency data 17a is generated.
When a exceeds a predetermined number of days, micro leakage continuous frequency data 1
7a is cleared (reset of count value = initialized) and returned to an initial value (= zero), and a predetermined period (24 hours) Tc and a unit period are set with man-hours for parameter adjustment according to the use environment. Since optimization can be easily performed, a minute leakage warning is executed with a high degree of accuracy that is optimal for the usage environment, and a minute leakage warning is performed over a period in which the minute leakage determination process (steps S2 and S3) is performed.
When a exceeds a predetermined number of days, the minute leak warning can be canceled, and therefore, the use environment of the highly reliable information on the cause of the minute leak warning displaying on the liquid crystal display 15 or the like that the minute leak has occurred. In this way, it becomes possible to collect information with high reliability in accordance with the usage environment, so that the minute leakage continuation frequency data 17a exceeds a predetermined number of days. Warning that a minute leak has occurred on the liquid crystal display 15 or the like, and performs a location where a supply abnormality such as a gas leak of the LP gas (a minute leak of the LP gas) occurs (forgetting to close the gas plug, gas water heater) 30, ..., 30, etc.) can be detected at an early stage with high accuracy according to the usage environment, and the most appropriate treatment can be quickly performed with high accuracy in the event of a supply abnormality (small leak of LP gas). Kill As becomes, as a result, the gas water heater 30, ..., so can be carried out with high reliability in accordance with the use environment sufficient security services to 30.

FIG. 3 is a flowchart for explaining one embodiment of the display process (steps T1 to T5) in the micro leak detection method of FIG.

In the display step (steps T1 to T5) shown in FIG. 3, in the method for detecting a minute leak according to the first or second aspect, the EEPROM 13 is used in response to the signal of the selection display request command 14a created in step T2. And a step (Step T3) of displaying the maximum value 12a_max of the minute leak flow rate and the minimum value 12a_min of the minute leak flow rate stored in the microcomputer 15 on the liquid crystal display 15 and described by the program code executable by the microcomputer. I have.

The display step (steps T1 to T)
5) is the selection display request instruction 1 created in step T2.
There is a step (step T3) of displaying the current fluid flow rate Q in real time according to the signal of 4a.

According to step T3, when a security service such as a maintenance management for a small leak of LP gas is performed, the integrated value ΣQ of the current fluid flow rate Q obtained by the fluid flow rate measuring means 11 is read out in real time. It can be displayed (step T3). On the other hand, in addition to the count information of the leak timer, the flow rate Q of the fluid flowing in the electronic gas meter 20 is measured at a predetermined sampling timing Tsmpl such as 60 minutes in step S1. The integrated value ΣQ of the current fluid flow rate Q obtained by the fluid flow rate measuring means 11 is converted to a gas leak detection device 10 or an electronic device, which will be described later, by using a portable terminal having an external communication function such as a data terminal brought by a maintenance person of the LP gas supply company. External communication port provided on the gas meter (RS232C having a data length of 5 bits as described above) (A communication port) to collect in real time as information on the cause of the micro leak warning in the form of a message, and the leakage flow rate of the LP gas over the period during which the micro leak determination process (steps S2 and S3) was performed. Information on the cause of a minute leak warning such as the flow rate of LP gas can be collected in real time, and the location of a supply abnormality such as gas leak of LP gas (small leak of LP gas) Gas water heater 30,
, 30, forgetting to turn off, etc.) can be found in real time, and the optimum treatment can be promptly performed for a supply abnormality (small leak of LP gas). As a result, the gas water heater 3
Sufficient security services for 0,..., 30 can be implemented in real time.

Display Step (Step T1 to Step T5)
Displays the integrated value ΣQ of the current fluid flow rate Q obtained by the fluid flow rate measuring means 11 on the liquid crystal display 15 (step T
3) The program configuration includes a flow rate integrated value display step.

The flow rate integrated value display step has a program configuration including a step of turning off the backlight light source 151 in response to the signal of the turn-off instruction 19b (YES in step T5) (step T5 → YES).

According to the flow rate integrated value display step, the count information of the leak timer and the integrated value ΣQ of the current fluid flow rate Q obtained by the fluid flow rate measuring means 11 are converted into a small leak warning such as a leak flow rate (LP gas leak flow rate). As a result, the required time can be displayed for a short time only on the display unit provided in the gas leak detection device 10 or the electronic gas meter as the information on the cause of the gas leakage. The battery life can be prolonged, the battery capacity can be reduced, and the battery cost can be reduced by using an inexpensive battery having a small battery capacity.

In the flow rate integrated value display step, the timer 16 is started from turning on the backlight light source 151 (step T3) (step T4), and the timer 16 measures for a predetermined time (5 minutes) (step T4 → step T5). YE
S), a signal of the light-off instruction 19b (YE in step T5)
The program configuration includes a step of turning off the backlight light source 151 in response to S) (YES in step T5 → step T1).

According to such a flow rate integrated value display step,
The count information of the leak timer and the integrated value ΣQ of the current fluid flow rate Q obtained by the fluid flow rate measuring means 11 are used as information relating to the cause of a minute leak warning such as a leak flow rate (LP gas leak flow rate) or the like. In addition to displaying only the necessary time for a short time on the display unit provided in the gas meter, the timer 16 is started from turning on the backlight light source 151 (step T3) (step T3).
4) The backlight 16 is turned off in response to the signal of the turn-off instruction 19b after the timer 16 measures for a predetermined time (5 minutes) (YES in step T5), thereby achieving energy saving. In order to reduce the consumption of the battery capacity built into the device, extend the life of the built-in battery, reduce the battery capacity, and reduce the battery cost by using an inexpensive battery with a small battery capacity. Become.

In the flow integrated value display step, the backlight light source 151 is turned on (step T3) when the cutoff test is executed (step T2: YES), and the current fluid flow rate Q obtained by the fluid flow rate measuring means 11 is calculated. The integrated value ΣQ is displayed (Step T3), the timer 16 is started from turning on the backlight light source 151 (Step T3) (Step T4), and the timer 16 measures for a fixed time (5 minutes) (Step T4 → Step T5). YES), light-off instruction 19
Step of turning off the backlight light source 151 in response to the signal b (YES in step T5) (YES in step T5 →
The program configuration includes step T1).

According to such a flow rate integrated value display step,
The integrated value ΣQ of the current fluid flow rate Q obtained by the fluid flow rate measuring means 11 is displayed on the gas leak detecting device 10 or the electronic gas meter as information on the cause of a minute leak warning such as a leak flow rate (LP gas leak flow rate). In addition to displaying only the required time on the unit for a short time, the timer 16 is started from turning on the backlight light source 151 (step T3) (step T4), and the timer 16 is turned off after the timer 16 measures for a certain time (5 minutes). 19b signal (step T
5), the backlight light source 151 is turned off to save energy. As a result, the consumption of the battery capacity built in the device is reduced, and the life of the built-in battery is extended. Battery capacity can be reduced, and battery cost can be reduced by using an inexpensive battery having a small battery capacity.

In the flow rate integrated value display step, when the remaining amount management reset switch 19B is depressed to initialize the remaining amount management of the LP gas cylinder (YES in step T2), the backlight light source 151 is turned on (step T2). T3) Then, the integrated value of the current fluid flow rate Q obtained by the fluid flow rate measuring means Σ
Q is displayed (step T3), and the backlight light source 151 is displayed.
Is started (step T3), the timer 16 is started (step T4), and the timer 16 is kept for a predetermined time (5 minutes).
After the measurement (step T4 → YES of step T5), a step of turning off the backlight light source 151 in response to the signal of the turn-off command 19b (YES of step T5) (step T5)
YES → Step T1).

According to such a flow rate integrated value display step,
When initialization of the remaining amount management of the LP gas cylinder is executed (YES in step T2), the backlight light source 151 is turned on (step T3) to illuminate the display provided in the gas leak detection device 10 or the electronic gas meter. Then, the integrated value ΣQ of the current fluid flow rate Q obtained by the fluid flow rate measuring means 11 is displayed on the display unit for a short time only for a required time as information on the cause of a micro leak warning such as a leak flow rate (LP gas leak flow rate). In addition to the above, the timer 16 is started from turning on the backlight light source 151 (step T3) (step T4), and the timer 16 responds to the signal of the turn-off instruction 19b after measuring for a fixed time (5 minutes) (YES in step T5). As a result, the backlight source 151 can be turned off to save energy, and as a result, the battery capacity built into the device can be reduced. Costs reduced, the life of the built-in battery life, decrease of battery capacity, it is possible to achieve a reduction of battery cost by using a small inexpensive battery having battery capacity.

In the integrated flow value display step, when the shut-off valve on / off switch 19C is pressed to open the gas shut-off valve 33 (step T3), the backlight light source 15
1 is turned on (step T3), the integrated value ΣQ of the current fluid flow rate Q obtained by the fluid flow rate measuring means 11 is displayed (step T3), and the backlight light source 151 is turned on (step T3).
The timer 16 is started from 3) (step T4),
After the timer 16 measures for a predetermined time (5 minutes) (step T
4 → YES in step T5), the backlight light source 1 according to the signal of the turn-off instruction 19b (YES in step T5)
The program configuration includes a step of turning off the light 51 (YES in step T5 → step T1).

According to such a flow rate integrated value display step,
When the opening operation of the gas shutoff valve 33 is executed (step T
In 3), the backlight light source 151 is turned on (step T3).
Then, the display unit provided in the gas leak detecting device 10 or the electronic gas meter is illuminated, and the integrated value ΣQ of the current fluid flow rate Q obtained by the fluid flow rate measuring means 11 is reduced to a small value such as a leak flow rate (LP gas leak flow rate). In addition to displaying only the required time on the display unit for a short time as information on the cause of the leak warning, the backlight light source 151 is turned on (step T3).
, The timer 16 is started (step T4), and the light-off instruction 19b after the timer 16 measures for a predetermined time (5 minutes).
(YES in step T5), the backlight light source 151 is turned off to save energy. As a result, the consumption of the battery capacity built in the device is reduced, and the life of the built-in battery is reduced. It is possible to reduce the battery cost by extending the life, reducing the battery capacity, and using an inexpensive battery having a small battery capacity. As described above, according to one embodiment of the micro leak detection method, LP
When performing a security service such as maintenance management for a gas leakage warning, the integrated value of the current fluid flow rate Q obtained by the fluid flow rate measuring means 11 or the maximum value 12a_max of the minute leakage flow rate based on the current fluid flow rate Q and the minute leakage The minimum value of the flow rate 12a_min can be displayed, while
In addition to the count information of the leak timer, the electronic gas meter 2
In step S1, the fluid flow rate Q flowing in
The integrated value ΣQ of the current fluid flow rate Q obtained by the fluid flow rate measuring means 11 obtained by measuring at a predetermined sampling timing Tsmpl such as 0 minute, or the maximum value 12a_max of the minute leak flow rate based on the current fluid flow rate Q and the minimum value of the minute leak flow rate Value 12
a_min is set to an external communication port provided in a gas leak detection device 10 or an electronic gas meter (described above) using a portable terminal having an external communication function such as a data terminal brought by a maintenance person of an LP gas supply company. Connected to an RS232C communication port having a communication terminal, the information can be collected in the form of a message as information on the cause of the minute leak warning, and the minute leak determination processing step (step S2, step S2)
3) It becomes possible to collect information on the cause of the minute leak warning such as the LP gas leakage flow rate (LP gas leakage flow rate) during the period in which the operation is performed, and supply abnormality such as LP gas gas leakage (LP gas minute amount). It is possible to find out the point of occurrence of leaks (forgetting to close the gas tap, forgetting to turn off the gas water heater 30, ..., 30 etc.) at an early stage, and to quickly perform the optimal treatment for a supply abnormality (small leak of LP gas). As a result, it is possible to perform a sufficient security service for the gas water heaters 30,..., 30.

[0153]

According to the invention as set forth in any one of claims 1 to 3, when a security service such as maintenance management for a minute leak warning is performed, it is based on the integrated value of the current fluid flow rate or the current fluid flow rate. At least one of the maximum value of the micro leak flow rate or the minimum value of the micro leak flow rate can be displayed.On the other hand, in addition to the count information of the leak timer, the fluid flow rate flowing through the device is determined at a predetermined sampling timing. The external communication function such as a data terminal brought by maintenance personnel can be used to determine at least one of the integrated value of the current fluid flow rate obtained by measurement, the maximum value of the micro leak flow rate based on the current fluid flow rate, or the minimum value of the micro leak flow rate. An external communication port (the above-mentioned 5-bit port) provided in a fluid leak detection device or an electronic fluid meter having a portable terminal described later It becomes possible to collect information on the cause of the micro leak warning in the form of a message by connecting to it, and it becomes possible to collect information on the cause of the micro leak warning, such as the flow rate of fluid leakage during the period when the micro leak judgment process was performed. In this way, it is possible to quickly detect a location where a fluid supply abnormality has occurred, and to quickly perform an optimum treatment for a supply abnormality situation, and as a result, it is possible to carry out a sufficient security service for gas appliances. .

According to the fourth aspect of the present invention, when a security service such as maintenance management for a minute leak warning is performed, the integrated value of the current fluid flow rate can be read out and displayed in real time. In addition to the count information of the timer, a mobile terminal having an external communication function such as a data terminal brought by a maintenance staff, the integrated value of the current fluid flow rate obtained by measuring the fluid flow rate flowing in the apparatus at a predetermined sampling timing, and Is connected to an external communication port (the above-mentioned 5-bit port) provided in a fluid leak detection device or an electronic fluid meter to be described later, and can be collected in real time as information on the cause of a minute leak warning in the form of a message. Real-time collection of information on the cause of microleakage warnings, such as the flow rate of fluid leakage during the period during which the judgment process was performed It is possible to find out the location of an abnormal supply of fluid in real time, and to quickly perform the optimal treatment for the abnormal supply situation, and as a result, implement sufficient security services for gas equipment in real time Will be able to do it.

According to the invention described in claim 5 or 6,
The micro leak warning is executed with high accuracy that is optimal for the usage environment over the period in which the micro leak judgment process is performed, and if the current fluid flow rate is not detected during the predetermined period, the micro leak warning can be canceled. Therefore, it is possible to optimize the information concerning the cause of the micro leak warning such as the flow rate of the fluid leakage in accordance with the use environment and to optimize the information in accordance with the use environment. By being able to collect, if the current fluid flow rate is detected during a predetermined period, the location of the fluid supply abnormality occurrence can be found at an early stage with high accuracy according to the usage environment, and the optimum treatment for the supply abnormality situation Can be performed quickly with high accuracy,
As a result, sufficient security services for gas appliances can be performed with high reliability according to the usage environment.

According to the seventh aspect of the present invention, it is easy to optimize the predetermined period and the unit period by the number of steps of the parameter adjustment according to the use environment. Executes a micro leak warning with high accuracy that is optimal for the usage environment, and can cancel the micro leak warning when the micro leak continuation frequency data exceeds a predetermined number of days, and therefore notifies that a micro leak has occurred Optimizing the information related to the cause of the micro leak warning to be optimized in accordance with the usage environment, and thus collecting highly reliable information in accordance with the usage environment When the micro-leakage continuation frequency data exceeds a predetermined number of days, a micro-leakage warning is issued to notify that a micro-leakage has occurred, and the location of the fluid supply abnormality occurrence can be determined according to the usage environment. And quickly perform the most appropriate measures for abnormal supply situations with high accuracy, and as a result, implement sufficient security services for gas equipment with high reliability according to the usage environment Will be able to

According to the present invention, the count information of the leak timer and the integrated value of the current fluid flow rate are provided in the fluid leak detecting device or the electronic fluid meter as information relating to the cause of the minute leak warning such as the leak flow rate. Display only the required time on the display unit for a short time, reducing the consumption of the battery capacity built in the device, prolonging the life of the built-in battery, reducing the battery capacity, battery cost Can be reduced.

According to the ninth aspect of the present invention, the count information of the leak timer and the integrated value of the current fluid flow rate are provided in the fluid leak detecting device or the electronic fluid meter as information relating to the cause of the minute leak warning such as the leak flow rate. In addition to displaying only the required time on the display unit for a short time, the display illumination light source can be turned off in response to the turn-off instruction, thereby saving energy. It is possible to reduce the consumption of the battery capacity, prolong the life of the built-in battery, reduce the battery capacity, and reduce the battery cost.

According to the tenth aspect of the invention, the count information of the leak timer and the integrated value of the current fluid flow rate are provided in the fluid leak detecting device or the electronic fluid meter as information relating to the cause of the minute leak warning such as the leak flow rate. In addition to displaying only the necessary time on the display unit for a short time only, the display illumination light source can be turned off in response to a turn-off command after a lapse of a predetermined time from the lighting of the display illumination light source, thereby saving energy. As a result, the consumption of the battery capacity built in the device can be reduced, and the life of the built-in battery can be prolonged, the battery capacity can be reduced, and the battery cost can be reduced.

According to the eleventh aspect of the present invention, the integrated value of the current fluid flow rate is required as information relating to the cause of the micro leak warning such as the leak flow rate on the display provided in the fluid leak detector or the electronic fluid meter. In addition to displaying only the time only for a short time, the display illumination light source can be turned off in response to a turn-off instruction after a certain period of time has elapsed since the display illumination light source was turned on, thereby achieving energy saving.
It is possible to reduce the consumption of the battery capacity built in the device, prolong the life of the built-in battery, reduce the battery capacity, and reduce the battery cost.

According to the twelfth aspect of the present invention, when the initialization of the remaining amount management is performed, the display illumination light source is turned on to illuminate the display unit provided in the fluid leakage detection device or the electronic fluid meter. Then, in addition to displaying the integrated value of the current fluid flow rate as information on the cause of a minute leak warning such as the leak flow rate on the display unit only for a short period of time, a turn-off command after a certain period of time has elapsed since the lighting of the display illumination light source As a result, the display illumination light source can be turned off to save energy, and as a result, the consumption of the battery capacity built into the device is reduced, the life of the built-in battery is extended, and the battery capacity is reduced. Thus, the cost of the battery can be reduced.

According to the thirteenth aspect of the present invention, when the shut-off valve is opened, the display illumination light source is turned on to illuminate the display unit provided in the fluid leak detection device or the electronic fluid meter. In addition to displaying the integrated value of the current fluid flow rate as information on the cause of a micro leak warning such as leak flow rate on the display unit only for a short time and only for a short period of time, the Accordingly, the display illumination light source can be turned off to save energy, and as a result, the consumption of the battery capacity built into the device can be reduced, the life of the built-in battery can be prolonged, the battery capacity can be reduced,
Battery cost can be reduced.

According to the invention as set forth in any one of the fourteenth to sixteenth aspects, when a security service such as maintenance management for a minute leakage warning is performed, the integrated value data of the current fluid flow rate data obtained by the fluid flow rate measuring means is determined. It can be read out in real time and displayed on the display means to improve the man-machine interface, and on the other hand, in addition to the count information of the leak timer, the flow rate of the fluid flowing in the device at a predetermined sampling timing A portable terminal having an external communication function such as a data terminal brought by a maintenance person is provided in a fluid leak detection device or an electronic fluid meter described later, and the integrated value data of the current fluid flow rate data obtained by the measured fluid flow rate measuring means is measured. Cause of micro leak warning in electronic form by connecting to the external communication port (5-bit port mentioned above) Information on the cause of a microleakage warning, such as the flow rate of fluid leakage, during the microleakage determination process, in a real-time manner, making customers wait. It is possible to shorten the time, improve the customer support ability to find the location of the abnormal supply of fluid in real time, and wait for the customer to take the optimal treatment for the abnormal supply situation It is possible to improve the customer service capability without delay, and as a result, it is possible to implement security services with high customer satisfaction for gas appliances in real time.

According to the seventeenth aspect of the present invention, a minute leak warning is executed with a high degree of accuracy that is optimal for the use environment during a period in which the minute leak determination process is performed. If not detected during the predetermined period, the micro leak warning can be canceled by using the micro leak continuation frequency evaluation means, and therefore, the information on the cause of the micro leak warning such as the flow rate of fluid leakage can be highly reliable. It is possible to optimize according to the use environment, and to collect highly reliable information according to the use environment in this way. When the fluid supply abnormality is detected during a predetermined period, it is possible to improve the customer supportability in which a location where a fluid supply abnormality occurs can be found at an early stage with high accuracy according to a use environment. Therefore, it is possible to quickly perform the most appropriate treatment for the supply abnormal situation with high accuracy using the microleakage continuation frequency evaluation means and improve the customer response ability, and as a result, Security services with high customer satisfaction for gas appliances can be implemented with high reliability according to the usage environment.

According to the eighteenth aspect of the present invention, the continuous fluid flow rate data obtained by the fluid flow rate measuring means is not detected every time when the current fluid flow rate data is not continuously detected in the unit time period with the predetermined time period as a unit time period. While the period is counted and the micro leak continuation frequency data is generated, when the micro leak continuation frequency data exceeds a predetermined number of days, the micro leak continuation frequency data is cleared (count value reset = initialization) and set to the initial value. The hardware configuration is such that the predetermined period and the unit period can be optimized by man-hours of the parameter adjustment degree according to the usage environment in the micro-leakage continuation frequency evaluation means. Of micro leak warnings with high accuracy that is optimal for the usage environment. It is possible to cancel using the evaluation means, and therefore, it is necessary to optimize the information concerning the cause of the micro leak warning, which is reported by the micro leak warning means that the micro leak has occurred, according to the usage environment. By collecting highly reliable information according to the usage environment in this way, it is possible to minimize the occurrence of minute leakage if the minute leakage continuation frequency data exceeds a predetermined number of days. Leakage warning means can issue a microleakage warning and can promptly identify the location of an abnormal supply of fluid with high accuracy according to the usage environment, thereby improving customer support. Optimal treatment can be performed quickly and with high accuracy using the microleakage continuation frequency evaluation means, and the ability to respond to customers can be improved. Result, it is possible to be carried out with high reliability in accordance with the use environment with high security service customer satisfaction with respect to gas appliances.

According to the present invention, the count information of the leak timer and the integrated value data of the current fluid flow rate data obtained by the fluid flow rate measuring means are displayed as information relating to the cause of the minute leak warning such as the leak flow rate. In addition to displaying only the required time for a short time, the display illumination light source can be turned off in response to the turn-off instruction, thereby saving energy.As a result, the consumption of the battery capacity built into the device can be reduced. Thus, the life of the built-in battery can be extended, the battery capacity can be reduced, and the battery cost can be reduced.

According to the present invention, the count information of the leak timer and the integrated value data of the current fluid flow rate data obtained by the fluid flow rate measuring means are displayed as information relating to the cause of a minute leak warning such as leak flow rate. In addition to displaying only the required time for a short period of time, the display illumination light source can be turned off in response to a turn-off command generated by an existing operation switch after a certain period of time has elapsed since the display illumination light source was turned on to save energy. As a result, it is possible to reduce the consumption of the battery capacity caused by the lighting of the display illumination light source, to prolong the life of the built-in battery, to reduce the battery capacity, and to reduce the battery cost. Become.

According to the twenty-first aspect, the flow rate calculating means is obtained based on the integrated value data of the current fluid flow rate data obtained by the fluid flow rate measuring means or the current fluid flow rate data and is stored in the storage means. In addition to displaying at least one of the maximum value of leakage flow rate data and the minimum value of minute leakage flow rate data on display means only for a short period of time as information on the cause of a minute leakage warning such as leakage flow rate (LP gas leakage flow rate). Therefore, it is possible to turn off the display illumination light source in response to a turn-off command generated by the existing operation switch after a predetermined time has elapsed from the turning on of the display illumination light source, thereby achieving energy saving. The battery capacity caused by the lighting of the display illumination light source, which extends the life of the built-in battery, reduces the battery capacity, and reduces the battery cost. It is possible to achieve reduction.

According to the twenty-second aspect, the flow rate calculating means is obtained based on the integrated value data of the current fluid flow rate data obtained by the fluid flow rate measuring means or the current fluid flow rate data and is stored in the storage means. In addition to displaying at least one of the maximum value of leakage flow rate data and the minimum value of minute leakage flow rate data on display means only for a short period of time as information on the cause of a minute leakage warning such as leakage flow rate (LP gas leakage flow rate). As a result, it is possible to save energy by turning off the display illumination light source in response to the turn-off command, using a signal for pressing the existing shut-off test switch after a predetermined time has elapsed since the lighting of the display illumination light source. As a result, the consumption of the battery capacity due to the lighting of the display illumination light source built in the device is reduced, the life of the built-in battery is extended, Reduction of the pond volume, it is possible to achieve a reduction of battery cost.

According to the twenty-third aspect, the flow rate calculating means is obtained based on the integrated value data of the current fluid flow rate data obtained by the fluid flow rate measuring means or the current fluid flow rate data and is stored in the storage means. In addition to displaying at least one of the maximum value of leakage flow rate data and the minimum value of minute leakage flow rate data on display means only for a short period of time as information on the cause of a minute leakage warning such as leakage flow rate (LP gas leakage flow rate). Thus, a pressing signal of the existing remaining amount management reset switch after a predetermined time has elapsed from the lighting of the display illumination light source is used as an extinguishing command, and the display illumination light source is extinguished in response to the extinguishing command, thereby saving energy. As a result, the consumption of the battery capacity caused by the lighting of the display illumination light source built in the device is reduced,
It is possible to extend the life of the built-in battery, reduce the battery capacity, and reduce the battery cost.

According to the twenty-fourth aspect, the flow rate calculating means is obtained based on the integrated value data of the current fluid flow rate data obtained by the fluid flow rate measuring means or the current fluid flow rate data and is stored in the storage means. In addition to displaying at least one of the maximum value data of the leakage flow rate and the minimum value data of the minute leakage flow rate as information on the cause of the minute leakage warning such as the leakage flow rate on the display means only for a short period of time and turning on the display illumination light source A pressing signal of a shut-off test switch, a remaining amount management reset switch, or a shut-off valve on / off switch after a lapse of a predetermined time from is used as a turn-off command, and the display illumination light source is turned off in response to the turn-off command, thereby saving energy. And as a result,
It is possible to reduce the consumption of the battery capacity due to the lighting of the display illumination light source built in the device, to extend the life of the built-in battery, reduce the battery capacity, and reduce the battery cost.

According to the twenty-fifth aspect of the present invention, when security services such as maintenance management for a minute leak warning are performed, the integrated value data of the current fluid flow rate data obtained by the fluid flow rate measuring means or the fluid flow rate measuring means obtains the same. At least one of the micro leak flow maximum value data and the micro leak flow minimum value data that the flow rate calculation means is currently determined based on the fluid flow rate data and held in the storage means can be displayed on the display means, while In addition to the count information of the leak timer, the current flow rate data obtained by the fluid flow rate measuring means obtained by measuring the gas flow rate flowing in the apparatus at a predetermined sampling timing, or the current value obtained by the fluid flow rate measuring means. The maximum value of the micro leakage flow rate obtained by the flow rate calculation means based on the fluid flow rate data and stored in the storage means At least one of the data and the minimum leakage flow rate data is transferred to a mobile terminal having an external communication function such as a data terminal brought by a maintenance person by using an external communication port (e.g. The above-mentioned 5-bit port) enables the collection of information on the cause of the micro leak warning in the form of a message in the form of a message. The cause of the micro leak warning such as the flow rate of the fluid gas leakage during the period in which the micro leak judgment process was performed Information can be collected, and the point of occurrence of the minute leak of gas can be found on the user side at an early stage, thereby improving customer supportability.
Optimal treatment for the situation of minute leakage of the gas supplied to the secondary gas supply system can be promptly performed without waiting for the customer, and the ability to respond to the customer can be improved. Security services with high customer satisfaction for gas appliances can be implemented.
In addition, the count information of the leak timer and the integrated value data of the current fluid flow rate data obtained by the fluid flow rate measuring means are displayed on the display means only for a short time as necessary information as information relating to the cause of a minute leak warning such as gas leak flow rate. In addition, a pressing signal of a shutoff test switch, a remaining amount management reset switch, or a shutoff valve opening / closing switch is used as a turn-off command, and the display illumination light source is turned off in response to the turn-off command, thereby saving energy. As a result, the consumption of battery capacity due to the lighting of the display illumination light source built into the device is reduced, and the life of the built-in battery is extended, the battery capacity is reduced, and the battery cost is reduced. Will be able to

[Brief description of the drawings]

FIG. 1 is a functional block diagram illustrating an embodiment of a fluid leak detecting device or an electronic fluid meter for performing a micro leak detecting method according to the present invention.

FIG. 2 is a flowchart illustrating an embodiment of a micro leak detection method performed by the fluid leak detection device or the electronic fluid meter of FIG. 1;

FIG. 3 is a flowchart illustrating one embodiment of a display step in the micro leak detection method of FIG. 2;

FIG. 4 is a flowchart illustrating a micro leak detection method performed by a conventional fluid leak detection device or an electronic fluid meter.

FIG. 5 is a timing chart for explaining sampling of a fluid flow rate performed by the micro leak detection method of FIG. 4;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Fluid leak detection apparatus (microprocessor) 11 ... Fluid flow rate measuring means (microprocessor) 11a ... Current fluid flow rate data 12 ... Flow rate calculating means (microprocessor) 12a_max ... Micro leak maximum flow rate data 12a_min ... Micro leak minimum flow rate Data 13 ... Storage means (EEPROM) 14 ... Display switch 14a ... Selection display request command 15 ... Display means (liquid crystal display) 151 ... Display illumination light source (backlight) 16 ... Timer 17 ... Micro leak continuation frequency evaluation means (microprocessor) 17a: Micro leak continuation frequency data 18: Micro leak warning means (microprocessor) 19: Operation switch 19a: Lighting command 19b: Lighting command 19A: Cutoff test switch 19B: Remaining amount management reset switch 19C: Shutoff valve open / close switch 2 ... Electron gas meter 30, ..., 30 ... Gas equipment 31 ... Gas supply path 31B ... Secondary fluid supply system 32 ... Combustion control means (microprocessor) 33 ... Fluid shutoff valve (Gas shutoff valve) 34 ... Flow rate sensor Q ... Fluid Flow rate Tc: predetermined period Tsmpl: predetermined sampling timing

Claims (25)

[Claims] 1. A method for detecting a supply abnormality of a fluid supplied to a secondary side fluid supply system, comprising the steps of: measuring a fluid flow rate flowing in an apparatus at a predetermined sampling timing to obtain a current fluid flow rate. And a micro leak flow rate calculating step of obtaining a maximum value of the micro leak flow rate or a minimum value of the micro leak flow rate based on the current fluid flow rate. 2. The method according to claim 1, further comprising a storage step of storing a maximum value of the minute leak flow rate and a minimum value of the minute leak flow rate based on the current fluid flow rate. 3. A display step for displaying at least one of the maximum value of the stored minute leakage flow rate and the minimum value of the minute leakage flow rate in response to a selection display request command. 3. The method for detecting micro leaks according to 1 or 2. 4. The method according to claim 1, further comprising a display step of displaying the current fluid flow rate in real time in response to a selection display request command. 5. A micro leak continuation frequency data is generated by counting a continuous non-detected predetermined period every time the current fluid flow rate is not detected continuously with the predetermined period as a unit period. The method for detecting a minute leak according to any one of claims 1 to 4, further comprising a minute leak timer step. 6. The micro leak timer step includes a step of clearing the micro leak continuation frequency data and returning the data to an initial value when the current fluid flow rate is not detected during the predetermined period. The method for detecting micro leaks according to claim 5. 7. The method according to claim 1, further comprising a minute leakage warning step for notifying that a minute leakage has occurred when the minute leakage continuation frequency data exceeds a predetermined number of days. Micro leak detection method as described. 8. The micro leak detecting method according to claim 1, wherein the displaying step includes a flow rate integrated value displaying step of displaying an integrated value of the current fluid flow rate. 9. The method according to claim 8, wherein the step of displaying the integrated flow value includes a step of turning off a display illumination light source in response to a turn-off command. 10. The flow rate integrated value display step includes a step of turning off the display illumination light source in response to an extinguishing command after a lapse of a predetermined time from the turning on of the display illumination light source. 2. The micro leak detection method according to 1. 11. The flow rate integrated value display step includes, when a cutoff test is performed, turning on the display illumination light source to display the integrated value of the current fluid flow rate, and elapse of a predetermined time from the lighting of the display illumination light source. 11. The method according to claim 9, further comprising a step of turning off the display illumination light source in response to a turn-off instruction. 12. The flow rate integrated value display step includes, when initialization of remaining amount management is performed, turning on the display illumination light source to display the integrated value of the current fluid flow rate, and turning on the display illumination light source. The method according to claim 9 or 10, further comprising a step of turning off the display illumination light source in response to a turn-off command after a lapse of a predetermined time from the start. 13. The flow rate integrated value display step, wherein when the shut-off valve is opened, the display illumination light source is turned on to display the integrated value of the current fluid flow rate, and the display illumination light source is turned on. The method according to claim 9 or 10, further comprising a step of turning off the display illumination light source in response to a turn-off command after a predetermined time has elapsed. 14. A fluid leakage detection device for detecting a supply abnormality of a fluid supplied to a secondary fluid supply system, wherein a fluid flow rate flowing in the device is measured at a predetermined sampling timing to obtain current fluid flow rate data. Fluid flow rate measuring means; flow rate calculating means for obtaining minute leak flow rate maximum value data and minute leak rate minimum value data based on the current fluid flow rate data; minute leak rate maximum value data based on the current fluid flow rate data; Storage means for storing leak flow rate minimum value data. 15. A display switch for generating a selection display request command, and displaying at least one of the stored minimum leakage flow rate data or the minimum leakage flow rate minimum value data in response to the selection display request instruction. The fluid leakage detection device according to claim 14, further comprising a display unit that performs the operation. 16. The fluid leakage according to claim 14, wherein the display means is configured to display the current fluid flow rate data in real time in response to the selection display request command. Detection device. 17. A timer for counting a predetermined period, and counting a continuous predetermined period that is not detected each time the current fluid flow rate data is not detected continuously in the unit period using the predetermined period as a unit period. And generating micro leak continuation frequency data, and when the current fluid flow rate data is not detected during the predetermined period, the micro leak continuation frequency evaluation means for clearing the micro leak continuation frequency data and returning to the initial value. 17. The method according to claim 14, wherein:
The fluid leakage detection device according to any one of claims 1 to 4. 18. The apparatus according to claim 14, further comprising: a minute leak warning unit for notifying that a minute leak has occurred when the number of days indicated by the minute leak continuation frequency data exceeds a predetermined number of days. The fluid leakage detection device according to claim 1. 19. The fluid leak detecting device according to claim 14, wherein the display unit is configured to display an integrated value of the current fluid flow rate data. 20. The display device according to claim 1, wherein the display unit includes a display illumination light source that illuminates a display screen in response to a lighting command generated in response to pressing of an existing operation switch and turns off the light in response to a light-off command. 20. The fluid leak detection device according to claim 19, wherein: 21. The display device according to claim 1, wherein the display unit is configured to execute a control for turning off the display illumination light source in response to a turn-off instruction received after a lapse of a predetermined time from turning on the display illumination light source. The fluid leak detection device according to claim 19 or 20. 22. The display means for lighting the display illumination light source in response to the lighting command generated when an existing interruption test switch for executing an interruption test is pressed, and displaying the current fluid flow data. 21. The integrated value of the display illumination light source is displayed, and control for turning off the display illumination light source is performed in response to a turn-off instruction received after a lapse of a predetermined time from the lighting of the display illumination light source. Or the fluid leakage detection device according to 21. 23. The display means, according to the lighting instruction generated when an existing remaining amount management reset switch for performing initialization of remaining amount management is pressed, turns on the display illumination light source. Displaying the integrated value of the current fluid flow rate data, and executing a control to turn off the display illumination light source in response to a turn-off instruction received after a lapse of a predetermined time from the lighting of the display illumination light source. 22. The fluid leak detection device according to claim 20, wherein 24. The display means, according to the lighting instruction generated when an existing shut-off valve on / off switch for performing an opening operation of a shut-off valve is pressed, turns on the display illumination light source. It is configured to display the integrated value of the current fluid flow rate data, and to execute control to turn off the display illumination light source in response to a turn-off instruction received after a lapse of a predetermined time from lighting of the display illumination light source. Claim 2
22. The fluid leak detection device according to 0 or 21. 25. A method for measuring the amount of gas used, detecting an abnormal supply of a gas supplied to a secondary gas supply system, interrupting the supply of the gas, and controlling the amount of gas supplied to the secondary gas supply system. An electronic gas meter that detects that the supply abnormality has been released and resumes gas supply, wherein the fluid leak detection device, a combustion control unit that activates a gas device connected to a gas supply path to promote a combustion operation, 25. A gas supply valve provided in a gas supply path, the gas supply valve having a gas cutoff valve for temporarily stopping supply of gas in the gas supply path according to the gas cutoff control. An electronic fluid meter using the fluid leakage detection device according to claim 1.