JPH0762880B2 - Information communication device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an information communication device for driving a gas safety valve provided in a subscriber's house to a safe side.

[Prior Art] In recent years, disaster prevention information such as gas leaks, fires, and earthquakes that occur at subscribers' homes is reported to the management center via a communication line such as a telephone line, a dedicated line, or a wireless transmission line using satellites. At the same time, an information communication device for communicating disaster prevention information received by the management center to a predetermined organization such as a gas company or a fire station is being put into practical use.

[Problems to be Solved by the Invention] However, in the conventional information communication device, for example, when a gas leak occurs in the subscriber's home, even if the gas leak in the subscriber's home is confirmed in the management center, the personnel of the management center Or, no action can be taken until the personnel of a prescribed organization such as a gas company operates the gas safety valve of the subscriber's house to the safe side, so the residents of the subscriber's house do not notice the gas leak and accidentally use the gas appliance. There is a risk of causing a major accident such as a gas explosion or fire by igniting a fire.

An object of the present invention is to provide an information communication device that can immediately drive a gas safety valve in a subscriber's home to a safe side when a gas leak occurs in the subscriber's home.

[Means for Solving the Problems] An information communication device of the present invention is a gas safety valve provided in a subscriber's house for opening and closing a gas supply pipe for supplying gas into the subscriber's house, and gas leakage in the subscriber's house. And a terminal device having a gas leak sensor for detecting a gas leak, and an electronic control circuit for transmitting a gas leak signal when a gas leak is detected by the gas leak sensor, and the terminal device connected to the terminal device via a transmission path. When a gas leak signal from the gas leak signal is received, a control center that sends a safety valve drive signal to drive the gas safety valve to a safe side is provided, and the electronic control circuit detects a gas leak by the gas leak sensor. Sometimes, the gas safety valve is driven to the safe side, and when the safety valve drive signal is received from the management center, the gas safety valve is driven to the safe side again. .

The gas safety valve is a gas cutoff valve that closes the gas supply pipe to cut off the gas supply to the subscriber's home.

[Operation] Since the information communication device of the present invention drives the gas safety valve to the safe side by the terminal device when reporting a gas leak to the management center when a gas leak has occurred in the subscriber's house, it immediately The gas safety valve of is driven to the safe side. further,
When the management center confirms a gas leak in the subscriber's house, the safety center drive signal is sent from the management center to the electronic control circuit in the subscriber's house, and the gas safety valve can be driven to the safe side. The safety valve is driven to the safe side again.

[Effects of the Invention] In the information communication device of the present invention, when a gas leak occurs in the subscriber's house, the personnel of the management center or the personnel of a predetermined agency such as a gas company can put the gas safety valve in the subscriber's home on the safe side. The safety valve is automatically driven to the safe side even if you do not operate it. Therefore, it is possible to prevent a major accident such as a gas explosion or a fire that may occur due to accidental ignition of a gas appliance or the like without the residents of the subscriber's house being aware of the gas leak.

Further, when a gas leak occurs in the subscriber's house, the terminal device drives the gas safety valve to the safe side, and the safety center drive signal is transmitted from the management center. The safety valve drive signal from the management center is a signal for driving the gas safety valve to the safe side again. That is, the gas safety valve is driven to the safe side by the signals from both the terminal device and the management center, and it becomes a double safety device.

[Embodiment] Next, an information communication apparatus of the present invention will be described based on an embodiment shown in FIGS. 1 to 4. FIG. 1 is a diagram showing a schematic structure of an information communication device, and FIG. 2 is a diagram showing a meter reading unit.

Reference numeral 1 denotes an information communication device according to the present invention. Reference numeral 2 denotes a terminal device installed in the subscriber's house. Reference numeral T denotes a telephone receiver (not shown) and a general subscriber telephone (hereinafter referred to as a telephone) having a plurality of push buttons (not shown). The plurality of push buttons are composed of numeral symbols from 0 to 9 and symbols such as *, #, A, B, C and D. L indicates a telephone line including an exchange system (telephone office, exchange).

Reference numeral 3 indicates a management center. The management center 3 is informed of various information of the subscriber's house, which is regularly or irregularly transmitted from the terminal device 2 via the telephone line L, and a predetermined information such as a gas company is given according to the information of the subscriber's house. Report to the agency or dispatch personnel. Further, when the management center 3 receives the gas leak information in the subscriber's house, it sends a safety valve drive (PB signal # code is used in this embodiment) signal to drive the gas cutoff valves B1 and B2 described later. Send to device 2.

The terminal device 2 is a gas meter meter that is an automatic gas meter.
It comprises a GM, a gas leak sensor S1, a meter reading unit U including an electronic control circuit, and gas cutoff valves B1 and B2.

The gas meter meter GM is an automatic meter detector that detects the flow rate of the supplied gas to the gas equipment, and detects the rotation of the magnet attached to the rotating body that rotates in proportion to the gas flow rate with a porcelain sensor element and is proportional to the flow rate. Send a pulse signal. In addition to automatic meter reading of gas, automatic meter reading of water, electricity, etc. may be performed.

The gas leak sensor S1 is a safety device for gas equipment and produces an output of 0 V when it is inoperable, 6 V when normal, and 12 V when gas leaks. The gas leak sensor S1 detects a gas leak in the subscriber's home when the gas leak in the subscriber's home is a predetermined value or more.

The gas cutoff valves B1 and B2 are the gas safety valves of the present invention, and are attached in series to a gas supply pipe for supplying gas into the subscriber's house.

The gas shutoff valve B1 is driven (closed) to the safety side when the gas leak signal from the gas leak sensor S1 is input to the terminal device 2, and further, the gas shutoff valve drive signal which is a safety valve drive signal from the management center 3. Is input to the terminal device 2, it is driven (valve closed) to the safe side again.

The gas shutoff valve B2 is driven to a safe side when the gas shutoff valve drive signal from the management center 3 is input to the terminal device 2 (closed valve).
To be done.

The meter reading unit U includes a gas meter GM and an input interface 21 for the gas leak sensor S1, a central processing unit (CP).
U) 22, a network control unit (NCU) 23, a communication connector 24 connecting terminals for connecting the management center 3 via the telephone T and telephone line L, an output interface 25, and a nickel-cadmium dry battery (3.6V) Power supply 26. The power supply 26 is charged by receiving station power from the telephone office.

The input interface 21 is a pulse input port 21a which is an input port of the gas meter GM, a non-voltage input port 21b which is an input port of the gas leak sensor S1, and a spare port P.
It consists of the input port 21c.

The CPU 22 stores the set value of the gas leak flow rate, the automatic meter reading timer time of the gas meter reading information to the management center 3, the set voltage value of the power supply, the user's telephone number or code number, the management center 3 telephone number or code number, etc. A storage circuit 4 for the initial data, a storage control circuit 5 for the control procedure of the entire system,
An automatic gas meter reading circuit 6, a gas shutoff valve drive circuit 7, a gas leak detection circuit 8 and a backup power source 9 which is a lithium battery (3V) are provided.

The NCU 23 is, as shown in FIG. 2, a line use detection circuit 23a for detecting a call mode, 16 Hz for detecting an incoming call.
Detection circuit 23b, tone detection circuit 23c for identifying the received code,
A dial transmission circuit 23d for inputting a transmission signal of a general subscriber telephone outside the subscriber's house, a circuit connection contact 23g opened / closed by a line switching relay 23e, and a telephone connection contact 23h.

The tone detection circuit 23c is an automatic level control circuit (ALC) 23i.
A reception code detection circuit 23j and a booster circuit 23k.

The ALC 23i corrects the reception frequency or voltage value received by the reception code detection circuit 23j so that it becomes a reference value, and the terminal device 2
This is a circuit that ensures communication between the management center 3 and the management center 3.

The booster circuit 23k is a circuit that boosts the voltage of the reception code detection circuit 23j to 8V because it does not operate unless the reception code detection circuit 23j supplies a voltage of 8V or more.

Further, 23l is a diode bridge circuit, 23m is a diode, 23n is a resistor, 23p is an impedance transformer, and 23q is a voltage drop type transistor.

The output interface 25 has external terminals 25a and 25b used for the gas cutoff valves B1 and B2.

The operation of the information communication device 1 of this embodiment will be described with reference to FIGS. 3 and 4.

FIG. 3 shows an operation flowchart of gas leak detection of this embodiment.

It is determined whether or not a gas leak signal is input from the gas leak sensor S1 (101). When the gas leak signal is not input (No), (101) is repeated and the gas leak in the subscriber's house is again monitored by the gas leak sensor S1.

When the gas leak signal is input (Yes), it is determined whether the delay time (30 seconds) of the gas leak sensor S1 has elapsed (102). Delay time (30 seconds) has not elapsed (No)
At times, repeat (102).

When the delay time (30 seconds) has elapsed (Yes), it is determined again whether the gas leak signal is input from the gas leak sensor S1 to determine whether the gas leak sensor S1 is malfunctioning ( 103). When the gas leak signal is not input (No), it is determined that the gas leak sensor S1 is malfunctioning, and (101) and subsequent steps are repeated, and the gas leak sensor S1 monitors the gas leak in the subscriber's house again.

When the gas leak signal is being input (Yes), it is determined whether the delay time (10 seconds) of the gas leak sensor S1 has elapsed (110). Delay time (10 seconds) has not elapsed (No)
At times, repeat (110).

When the delay time (10 seconds) has elapsed (Yes), it is determined again whether or not the gas leak signal is input from the gas leak sensor S1 to determine whether or not the gas leak sensor S1 is malfunctioning ( 111). When the gas leak signal is not input (No), it is determined that the gas leak sensor S1 is malfunctioning, and (101) and subsequent steps are repeated, and the gas leak sensor S1 monitors the gas leak in the subscriber's house again.

When the gas leakage signal is input (Yes), the gas shutoff valve drive circuit 7 sends an output for closing the gas shutoff valve B1 (112).

Now, encoding processing for converting the gas leak signal into a transmission code is performed (104), and then data processing for determining the transmission order of the data with the transmission code from the gas automatic meter reading device 6 is performed (105), Then, transmission control (communication control subroutine of FIG. 4) for transmitting transmission data such as gas leak and gas meter reading value to the management center 3 via the telephone line L by the NCU 23 is performed (106).

Then, from the management center 3 via the telephone line L to the NCU23
Thus, reception control (communication control subroutine of FIG. 4) for receiving the gas shutoff valve drive code (# code which is the PB signal is used in this embodiment) is performed (107).

Next, an encoding process for converting the # code into a drive signal for the gas cutoff valve B1 is performed (108), and an output for closing the gas cutoff valves B1 and B2 is transmitted from the gas cutoff valve drive circuit 7 (109). ).

In this embodiment, as described above, when the management center 3 receives a gas leak in the subscriber's house, the meter reading unit U in the subscriber's house is received.
Since the gas cutoff valve drive (#) code for closing the gas cutoff valves B1 and B2 can be transmitted from the management center 3 to the gas cutoff valve drive circuit 7 of the above, the gas cutoff valve B of the subscriber's house is immediately transmitted.
It becomes possible to close 1 and B2. As a result, in the present embodiment, when a gas leak occurs in the subscriber's house, the management center 3 receives the gas leak in the subscriber's house, but the personnel of the management center 3 or a predetermined institution such as a gas company does not operate. It occurs because the residents do not notice the gas leak and accidentally ignite the gas appliances, etc., until the personnel etc. operate the gas shutoff valve at the subscriber's home to the side that shuts off the gas supply at the subscriber's home. It is possible to prevent major accidents such as gas explosion and fire.

Furthermore, in this embodiment, when a gas leak is occurring in the subscriber's house, before reporting the gas leak to the management center 3,
Since the gas shutoff valve B1 can be closed by the terminal device 2, the gas shutoff valve drive signal from the management center 3 is
This signal is used to close B1 again. That is, in this embodiment, the gas shutoff valve B1 is driven by signals from both the terminal device 2 and the management center 3, which is a double safety device.

The gas cutoff valve B1 as well as the gas cutoff valve B2 may be driven by signals from both the terminal device 2 and the management center 3.

Alternatively, the gas shutoff valve B1 may be closed by the terminal device 2 after notifying the management center 3 of a gas leak.

FIG. 4 shows an automatic dial communication control subroutine of this embodiment.

In order to determine whether or not the telephone set T is in use, the line use detection circuit 23a determines whether or not the call mode is detected (201). When the line use detection circuit 23a detects the call mode (Yes), (201) is repeated.

The line use detection circuit 23a does not detect the call mode (N
At the time o), the 16Hz detection circuit 23b determines whether or not the incoming call is being detected from the telephone outside the subscriber's house (202) (202). When the 16Hz detection circuit 23b detects an incoming call (Yes), (20
Repeat 1).

16Hz detection circuit 23b does not detect an incoming call (N
o), output to the circuit switching relay 23e and contact 23 for circuit connection
Close g and open contact 23h for telephone connection to make telephone line L
And the dial transmission circuit 23d are connected to close the DC circuit 23f (203).

It is judged whether or not 3 seconds have passed since the DC circuit 23f was closed (204). When 3 seconds have not passed since the DC circuit 23f was closed (No), (204) is repeated. When 3 seconds have passed since the DC circuit 23f was closed (Yes), the management center 3 was called and automatic dialing was started (205). In order to determine whether or not the data transmission instruction code has been received from the management center 3, the reception code detection circuit 23j determines whether or not the data transmission instruction code has been detected (206).

When the reception code detection circuit 23j detects the data transmission instruction code (Yes), it transmits the transmission data such as the gas leak and the meter reading value of the gas to the management center 3 (20).
7).

In (206), when the reception code detection circuit 23j does not detect the data transmission instruction code (No), it is determined whether or not the number of transmissions has reached 3 after automatic dialing (20).
8).

When the number of calls is not three times (No), the signal is output to the line switching relay 23e to open the circuit connection contact 23g, and the telephone connection contact 23h is closed to connect the telephone line L and the telephone T. Then, the DC circuit 23f is opened (209). Then, it is determined whether 5 seconds have passed (210). 5 seconds have not passed (N
At o), repeat (210). 5 seconds have passed (Yes)
At times, repeat from (201) onwards.

When the number of outgoing calls reaches 3 times (Yes), contact 2 for telephone connection
3h is closed, the telephone line L and the telephone T are connected, and the DC circuit 23f is opened (212).

Here, it is determined whether or not the second automatic dialing has been performed (213). Not dialing the second time automatically (N
It is judged whether o) hour, 5 minutes have passed (214). When 5 minutes have not passed (No), repeat (214). When 5 minutes have passed (Yes), repeat (201) and subsequent steps.

When the second automatic dialing is performed (Yes), it is determined whether the third automatic dialing is performed (215). Three
When the automatic dialing is not performed for the second time (No), it is determined whether 5 minutes have elapsed (216). 5 minutes have not passed (N
At o), repeat (216). 5 minutes have passed (Yes)
At times, repeat from (201) onwards.

When the third automatic dial is being performed (Yes), the operation ends.

In (207), after transmitting the transmission data such as the gas leak and the gas meter reading value to the management center 3, the reception is performed to determine whether or not the gas shutoff valve drive (#) code is received from the management center 3. The code detection circuit 23j determines whether or not the # code is detected (217).

The received code detection circuit 23j does not detect the # code (No)
At time, it is determined whether 15 seconds have passed (218). When 15 seconds have not passed (No), repeat (217). If 15 seconds have passed (Yes), proceed to (208).

The received code detection circuit 23j detects the # code (Yes)
When producing an output to drive the gas shutoff valves B1, B2 (219),
After that, the signal is output to the line switching relay 23e and the circuit connection contact 2
3g is opened, telephone connection contact 23h is closed to connect telephone line L and telephone T, and DC circuit 23f is opened (22
0). Then, the operation ends.

[Modification] Although a plurality of gas cutoff valves B1 and B2 are used for the gas safety valve in the present embodiment, any one of the gas cutoff valve B1 and the gas cutoff valve B2 may be provided.

In the present embodiment, the # code is used as the gas shutoff valve drive code, but numeric codes 0 to 9 and PB such as *, A, B, C and D are used.
You may use a code.

Although the telephone line is used as the transmission line in the present embodiment, it may be used as a transmission line such as a communication line such as a dedicated line or radio using a communication satellite.

In this embodiment, a nickel-cadmium dry battery, which is charged by local power supply, is used as the power source, but a household AC power source (100V50
/ 60Hz) may be used, or another power supply may be used.

Further, a display device such as a lamp or a buzzer for displaying the state of a general subscriber telephone set when a sensor outputs a signal may be attached to the meter reading unit.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic structure of an information communication apparatus according to an embodiment of the present invention, FIG. 2 is a block diagram showing a meter reading unit according to an embodiment of the present invention, and FIG. FIG. 4 is an operation flowchart of an automatic dial communication control subroutine according to one embodiment of the present invention. In the figure, 1 ... Information communication device, 2 ... Terminal device, 3 ... Management center, B1, B2 ... Gas cutoff valve (gas safety valve), L ... Telephone line (transmission line), S1 ... Gas leak sensor , T: General subscriber telephone, U: Meter reading unit including electronic control circuit

Claims (2)

[Claims] 1. A gas safety valve provided in a subscriber's house for opening and closing a gas supply pipe for supplying gas to the subscriber's house, a gas leak sensor for detecting a gas leak in the subscriber's house, and the gas leak sensor. A terminal device having an electronic control circuit for transmitting a gas leak signal when a gas leak is detected, and the gas safety valve connected to the terminal device via a transmission path and receiving a gas leak signal from the terminal device. The electronic control circuit drives the gas safety valve to the safe side when a gas leak is detected by the gas leak sensor, and An information communication device, wherein the gas safety valve is driven to the safe side again when a safety valve drive signal is received from the management center. 2. The information according to claim 1, wherein the gas safety valve is a gas cutoff valve that closes the gas supply pipe to cut off the supply of gas to the subscriber's house. Communication device.