JPH11201824A - Temperature recording device - Google Patents

Abstract

(57) [Summary] [Problem] The trouble caused by the occurrence of a meaningless alarm of a temperature abnormality within the time required immediately after opening / closing a door of a luggage compartment to return to a set temperature, the trouble of stop operation thereof, or a vehicle. If problems such as adverse effects on operation are resolved and the cargo room temperature is not likely to return to the proper set temperature and the possibility of loss of cargo quality is high, that is, an alarm is really necessary. Be sure to alert it only when it does. SOLUTION: When it is determined that the temperature of the luggage compartment is an abnormal value, the temperature return scheduled time counting means 202 does not generate an alarm when the counting is continuing, and the temperature is an abnormal value. When it is determined that the temperature return scheduled time counting means 202 does not continue the counting, an alarm generating means 300 for generating the alarm is provided in the main part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temperature recording device for recording the temperature of a freezer compartment of a transportation vehicle and for alarming occurrence of abnormal temperature.

[0002]

2. Description of the Related Art In recent years, refrigeration and transportation of a wide variety of materials, including transportation of foodstuffs, have been actively carried out, and it is not an exaggeration to say that refrigeration is the key to such refrigeration transportation. More precise management of room temperature and the like has been demanded.

In recent years, in a transport vehicle equipped with a freezer, the temperature of the freezer is precisely controlled by controlling the temperature of the freezer accurately in order to reduce operating costs and consider environmental protection. Demands for technologies to achieve this are also increasing. And in order to realize such accurate and effective freezer temperature control, the freezer temperature management is not only controlled from the standpoint of freezer temperature control alone, but also includes the operation state of the transport vehicle itself. The need for analysis is increasing even more. In other words, there is a strong demand not only for temperature data but also for more detailed temperature analysis together with data on the operation state of the vehicle itself (for example, operation mode information such as loading or unloading state or running state).

Therefore, a conventional temperature recording device measures and records temperature data of a temperature control target such as a freezer of a transportation vehicle, and further records the temperature data on a screen of a display device such as a liquid crystal display panel mounted on the vehicle. , A temperature-time graph.

[0005] On the other hand, an IC card such as an IC card in which various data such as temperature data for, for example, 24 hours to several days, as well as data relating to operating conditions such as the running speed of the vehicle itself and engine ON / OFF, etc. A special recording medium is removed from the transportation vehicle, and the IC card is mounted on a temperature recording analysis device dedicated to temperature management analysis installed at a transportation company head office or the like outside the vehicle, and the various data recorded therein is read. By reading the data, the operation record of the transport vehicle itself is compared with the record of the temperature state in the freezer where the transport vehicle is transported as data, and the temperature control and the operation control are analyzed.

[0006]

In general, a temperature recording device is used not only for analyzing the recording of the temperature state in the freezer carried by the vehicle after the operation but also for the operation of the vehicle. The temperature of the freezer being transported is monitored in real time at the point in time when it is transported, and if the temperature inside the refrigerator becomes abnormal, it is immediately detected and countermeasures are taken, so that cargo can be loaded. Prevention of trouble is also being used as one of the very important purposes.

[0007] For example, when an abnormal rise in temperature occurs during transportation of a frozen perishable product, resulting in inadvertent thawing of the frozen perishable product, the frozen perishable product, which is the cargo, is immediately transferred It will be deteriorated and its quality will be greatly impaired,
It can also cause great damage to such cargo.

[0008] In particular, when loading or unloading luggage such as frozen perishables into the luggage compartment, such loading or unloading is impossible unless the door of the luggage compartment is always opened. However, the door of the luggage compartment must be opened during such loading or unloading. However, when the luggage compartment door is opened in this way, it is greatly affected by the inflow of outside air from the opened door and the loss of air in the luggage compartment. Temperature greatly changes and greatly deviates from the set temperature.

In order to minimize the phenomenon of deviation from the set temperature when the door of the luggage compartment is opened, the loading and unloading of the cargo in the physical sense should be performed as quickly as possible. However, in order to quickly load and unload such loads, it is necessary to make the door opening of the luggage compartment large. Then, when such a large opening is opened, the appropriate temperature in the cargo room is washed away or mixed with the outside air in a short time from the large opening, and the temperature in the cargo room is adjusted within a short time. The temperature will deviate from the set temperature.

[0010] However, there is also proposed a method for shortening the time required for the temperature of the cargo room to deviate from the appropriate set temperature as described above to such an extent that the practical inconvenience as described above does not occur. Will be issued. That is, the temperature of the cargo room that deviates from the set temperature range when the loading / unloading operation is performed by opening the door of the cargo room as described above is quickly returned to the original set temperature range again by a refrigeration unit having a sufficient output. It is a technique to make it.

However, in order to reduce the fuel consumption of the refrigeration system, it is required to suppress the output of such a refrigeration system to a necessary and sufficient level. In many cases, the deviation of the cargo room temperature at the time of opening and closing the door as described above will not be resolved for a long time unless a setting that satisfies these conditions is adopted. As a result, there is a problem in that the package such as the above-mentioned frozen perishable material is immediately deteriorated, and the quality thereof may be greatly deteriorated and even cause damage.

Alternatively, even when the output of the refrigerating apparatus is always set to a sufficient output value, for example, when the refrigerating apparatus is mechanically or electrically malfunctioning, a sufficient refrigerating effect can be obtained. As a result, the temperature in the luggage compartment cannot be quickly returned to the normal set temperature range due to this. As a result, there is a problem in that the package such as the above-mentioned frozen perishable material is deteriorated, and causes serious damage such as quality deterioration.

For example, in the case of the above-mentioned frozen fresh product, the temperature of the frozen fresh product suddenly rises, so that the frozen fresh product is inadvertently thawed, and the frozen fresh product deteriorates. In some cases, it may become useless as a product. Therefore, in order to prevent the load from being disturbed due to such a change in the temperature of the cargo compartment when the door of the cargo compartment is opened and closed, the temperature of the cargo compartment is monitored by a temperature recording device, and based on the measured temperature value. It is devised to provide an alarm device for detecting the occurrence of a temperature abnormality and generating an alarm to warn of the occurrence.

That is, an appropriate temperature range is set in advance,
An apparatus having a function of measuring the temperature of the luggage compartment at regular intervals as described above and issuing an alarm when the measured temperature is out of the appropriate temperature range is preferable. It is devised as a thing. As a method of generating the alarm, it is required that the alarm be as easy as possible to be noticed to the driver of the vehicle during the operation of the vehicle. It is useful to generate the alarm with the information.

However, after the loading / unloading as described above is completed and the cargo compartment door is closed, for a certain period of time, no matter how the high-power refrigeration system is used, the load that has deviated until then will be Time is required for returning the room temperature to the set temperature again. Therefore, during the time required to return such a deviated luggage compartment temperature to the set temperature, the luggage compartment temperature remains at a temperature outside the proper preset temperature range set in advance. Something is inevitable.

For this reason, after the loading or unloading is completed and the door of the luggage compartment is closed, the above-mentioned alarm device judges that the above temporary abnormal temperature condition is abnormal, and issues an alarm. Such an alarm is almost meaningless, but rather an audible alarm that is only awkward for the driver of the vehicle. In other words, it seems that the driver has just opened and closed the door, so it seems that the cargo room temperature has temporarily changed to the extent that there is no practical problem, but the alarm device falsely detects this and issues an alarm. When the sound is emitted, the warning sound itself gives a feeling of anxiety to the driver and becomes extremely complicated only when the warning sound is too natural for the driver and rather unexpected.

On the other hand, on the other hand, the above-mentioned alarm sounds to warn a temperature abnormality which is a serious cause of quality deterioration and damage of luggage such as fresh food, so that the driver should be surely warned. It must be something to encourage.
Therefore, the warning sound needs to be clearly and remarkably noticed by the driver. For this reason, if the warning sound is issued even during the temperature recovery time as described above, the warning is practically meaningless to the driver as in the case of a real temperature abnormality. There is a problem in that the user becomes noticeably conscious and becomes more complicated because it is a meaningless and careless alarm.

Furthermore, when an unavoidable temporary (transient) deviation of the cargo room temperature from the normal value during the temperature recovery time is generated as described above, the alarm sound is complicated. In order to avoid this, it may be considered that an operation switch or the like for stopping the generation of the alarm is provided, and the driver performs an operation of turning off the alarm.

However, in this case, the driver is distracted by the urgency of hearing the occurrence of an unexpected alarm while driving the vehicle and by the complication of subsequent switch operations. , There is a possibility that the driver's attention to driving the vehicle at that time is distracted and a driving error may be induced. That is, there is a problem that there is a possibility that a meaningless driving error caused by a completely meaningless alarm may be induced.

Alternatively, in order to avoid complication caused by the generation of an alarm sound when the abnormal temperature of the luggage compartment occurs for a while immediately after the opening and closing of the door as described above, and a troublesome operation for stopping the alarm sound, It is also conceivable that the warning of the occurrence of an abnormal temperature in the cargo room is not displayed as auditory information through an auditory medium called an alarm sound but as visual information through a visual medium such as a liquid crystal display panel. Alternatively, since the conventional temperature recording device records the temperature of the luggage compartment on recording paper or the like, it may be sufficient to present the driver with visual information using such a visual medium.

However, since the driver must visually check any of such visual information from the visual medium, in order to accurately check for a temperature anomaly in a cargo of high importance as described above, The driver must frequently check the luggage compartment temperature information visually displayed while driving the vehicle, and the probability of inducing side-by-side driving or carelessness in the forward direction is extremely high, which makes the driver complicated. Not only that, there is also a problem that the operation of the vehicle is dangerous, and conversely, if the number of checks for such visual information warnings is reduced, the probability of overlooking the occurrence of temperature abnormalities increases, so Is preferably emitted by sound, that is, auditory information, and it is considered that the above-mentioned problems such as complexity are not easily solved.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and is directed to a temperature recording device used for a refrigerator car, a freezing car, and other general transportation of luggage.
A temperature recording device that issues an alarm as an auditory information such as an alarm buzzer that does not require visual confirmation when a temperature abnormality occurs. It can solve the problems such as the trouble caused by the generation of a meaningful alarm and the trouble of the stop operation, and the cargo room temperature does not return to the appropriate set temperature after the opening and closing of the cargo room doors. It is an object of the present invention to provide a temperature recording device capable of reliably issuing an alarm only when the possibility of causing a loss to quality increases, that is, only when an alarm is really needed. .

[0023]

First, a temperature recording device according to the present invention is a temperature recording device mounted on a vehicle that loads cargo in a luggage compartment where temperature control is performed, wherein the interior of the luggage compartment is inside the luggage compartment. A temperature measuring device that measures the temperature of the temperature at fixed time intervals, and a temperature recording device that records the temperature data in association with time data when the temperature is measured. The data of the temperature inside the luggage compartment measured by the temperature measuring means is compared with a value in an appropriate range set in advance corresponding to the luggage to determine whether the value is within the appropriate range. Temperature abnormality judging means, a luggage door opening / closing detecting means for detecting opening / closing of a luggage door provided at a luggage doorway of the luggage compartment, and the luggage door closing from the open state by the luggage door opening / closing detecting means. State was detected From the point, start counting the predetermined temperature return scheduled time, continue the count until the count reaches the temperature return scheduled time, after the count reaches the temperature return scheduled time Is a temperature recovery scheduled time counting means for resetting the count, and an alarm for generating an alarm as auditory information when the temperature abnormality determination means determines that the temperature data is an abnormal value out of the appropriate range. Generating means, wherein when the temperature is determined to be an abnormal value, when the temperature return scheduled time counting means is continuing the counting, the alarm is not generated or suppressed, and the temperature is abnormal. If the temperature return scheduled time counting means does not continue the counting when it is determined that the value is the alarm value, the alarm is generated. It is characterized by comprising: a stage, a.

That is, when the temperature of the luggage room deviates from the temperature in the appropriate range, the temperature abnormality judging means judges that the temperature is abnormal, and the alarm generating means generates an alarm sound such as an alarm sound which can be reliably recognized by the user. At this time, if the luggage compartment door is once opened and then closed, but before the time when the luggage compartment temperature is expected to return to the appropriate temperature, it will inevitably be out of the appropriate range. Since it is temperature, it is meaningless to warn that it is an abnormal occurrence as described above, and it is rather complicated, and it also leads to danger such as driving aside. As described above.

Therefore, according to the present invention, even if it is determined that the temperature of the luggage room deviates from the appropriate value before the time at which the luggage room temperature is expected to return to the appropriate temperature, it is determined that the abnormal value is not exceeded. An alarm notifying that an abnormality has occurred is not issued (or suppressed). More specifically, as a more specific method, the temperature return scheduled time counting means counts the time when the cargo room temperature is expected to return to the appropriate temperature, and the temperature abnormality determination means determines the occurrence of temperature abnormality during the counting. However, in that case, the alarm generating means does not generate (or suppresses) the alarm.

As described above, according to the present invention, the trouble caused by the generation of the meaningless alarm of the temperature abnormality within the time required immediately after the opening and closing of the door to the return to the set temperature, and the trouble of the stop operation thereof. Can be solved, and even though the loading / unloading of the cargo, that is, the opening / closing of the door of the cargo room, is completed, the cargo room temperature cannot return to the proper set temperature and the load quality is lost. When the possibility that the state is given becomes high, that is, when an alarm is really required, the alarm can be reliably issued.

Here, the above-mentioned alarm is not limited to not only not to be generated during the scheduled temperature return time, but it is needless to say that the generation may be suppressed. That is, instead of generating an alarm at all, for example, the alarm may be suppressed to a low volume and issued for a short time.

As described above, the warning sound is issued only for a short time during the scheduled time for returning to the temperature, and is generated at a low volume which is not so noticeable, so that the warning is obviously not so serious for the driver. In addition, it is possible to recognize the alarm during the above-mentioned scheduled temperature return time clearly and distinctly from the state where the alarm is originally required. In addition, even during the scheduled temperature return time, the cargo room temperature does not deviate from an appropriate value, and therefore, it may be better to issue a warning in that sense. For example, if the loading / unloading operation takes longer than expected, the temperature control will be started after the luggage compartment door is closed and the temperature of the luggage compartment will be restored even if the temperature of the luggage compartment is restored. Before the temperature completely returns to the proper temperature, there may be a case where a time period has elapsed in which the quality of the package has already deteriorated. Therefore, even in such a case, it is necessary to issue a suppressed alarm within a range that can be clearly distinguished from other cases even during the scheduled temperature return time as described above and is not so complicated. This can be dealt with.

Secondly, in the temperature recording apparatus according to the first aspect of the present invention, in the temperature recording apparatus according to the first aspect, the temperature return scheduled time counting means further comprises: Even if the luggage compartment door changes from the closed state to the open state and becomes the closed state again,
A new count from the closed state is not started, but the count continued from before the closed state is continuously counted without being reset without being reset.

That is, in the case where the luggage compartment door is opened again to load / unload the luggage before the scheduled temperature return scheduled time once counted has elapsed, for example, the load after the reloading / reloading is performed again. When the luggage compartment door is closed and a new (that is, the previously ongoing count is reset) counting of the expected temperature return time starts from the initial value, the luggage compartment is eventually loaded. The time during which the baggage is exposed to a temperature outside the proper range is counted substantially at a time that is considerably longer than the above-mentioned scheduled temperature return time, and the counting is completed and an alarm can be generated. By the time, there may be a disadvantage that the quality of the package has already deteriorated due to the abnormal temperature.

Therefore, according to the present invention, in the case where the loading and unloading of the load is frequently performed in a short time as described above, the end of the first of these continuous and frequent loading and unloading operations is completed. The counting is completely continued without resetting from the point in time until the above-mentioned scheduled temperature return time is completely ended. More specifically, the detection of the end point of the loading / unloading work can be detected by detecting the closed state of the cargo room door. Thereby, it is possible to avoid the disadvantage of the delay of the possible alarm generation time (or the prolongation of the alarm stop time) due to the continuous and frequent loading / unloading of the load as described above.

Thirdly, in the temperature recording apparatus of the present invention, in the temperature recording apparatus according to the first or second aspect, the temperature return scheduled time counting means may include the predetermined temperature return time as the predetermined temperature return time. When the control means functions normally, the time is set to a time corresponding to the time required for the temperature of the luggage compartment to return to the appropriate range from an abnormal value outside the appropriate range.

That is, in the technology described in the first aspect, the predetermined scheduled temperature return time is assumed to be a time from when the luggage compartment door is closed until the temperature of the luggage compartment returns to the appropriate temperature range. Time can be suitably adopted. Therefore, as such a scheduled temperature return time, when the temperature control means functions normally, the time itself required until the temperature of the luggage compartment returns from the abnormal value outside the appropriate range to the appropriate range, Alternatively, as a slight correction value, for example, a correction value that changes according to the outside air temperature, a correction value corresponding to a change amount of the load room temperature that changes when the load room door is open when loading / unloading the load, and the like. The added value can be suitably used.

Fourth, a temperature recording device according to the present invention is a temperature recording device mounted on a vehicle that loads cargo in a luggage compartment where temperature control is performed, wherein the temperature inside the luggage compartment is measured at regular time intervals. In a temperature recording device having a temperature measuring means for measuring each temperature, and a temperature recording means for recording the data of the temperature in association with time data when the temperature is measured, the temperature is measured by the temperature measuring means. Temperature abnormality determining means for comparing the data of the temperature inside the luggage compartment with a value in an appropriate range set in advance corresponding to the luggage, and determining whether the value is within the appropriate range. A loading / unloading door opening / closing detecting means for detecting opening / closing of a loading / closing door provided at a luggage doorway of the luggage compartment, and the luggage door opening / closing detecting means changing the luggage door from the closed state to the open state. Predetermined from the time of detection Start counting the scheduled temperature return time, and continue the count until the count reaches the temperature return expected time.After the count reaches the temperature return expected time, the next time A temperature return scheduled time counting means for returning to a waiting state of the luggage compartment door, and a hearing medium using an auditory medium when the temperature abnormality determination means determines that the temperature data is a value outside the appropriate range. Alarm generation means for generating an alarm, wherein when the temperature is determined to be an abnormal value and the temperature return scheduled time counting means is continuing the counting, the alarm is not generated or Suppress, and when the temperature is determined to be an abnormal value, if the temperature return scheduled time counting means does not continue the counting, the alarm is issued. It is characterized by comprising, an alarm generating means for.

In the case of the temperature recording device described in the first aspect,
The count of the scheduled temperature return time starts when the luggage compartment door is closed, but in the case of the temperature recording device described in the fourth aspect, the count of the scheduled temperature return time is determined when the luggage compartment door is opened. Start counting from.

That is, in the temperature recording apparatus according to the fourth aspect, the scheduled temperature return time is counted from the stage when the luggage compartment door is opened and the luggage compartment temperature enters a condition that deviates from an appropriate range. In other words, the time during which the warning in the auditory information is not generated (suppressed) or suppressed and generated includes the time during which the luggage compartment door is opened and the load is unloaded. The alarm can be stopped (or suppressed) taking into account the problem of quality deterioration of the luggage exposed to the temperature atmosphere outside the proper range during the time of such unloading work because it can be counted as the time above. ) And presenting an alarm display.

When the estimated temperature return time is counted from the stage where the luggage compartment door is opened and the luggage compartment temperature enters a condition that deviates from the appropriate range, the estimated temperature return time at that time is counted as In particular, it is desirable to set the time within a range where the quality of the cargo is not deteriorated even when the cargo is exposed to a temperature atmosphere outside the appropriate range, particularly focusing on the point of quality deterioration of the cargo.

Therefore, fifth, the temperature recording device of the present invention
In the temperature recording device according to the fourth aspect, the scheduled temperature return time counting means may degrade the quality even if the package is exposed to a room atmosphere having a temperature outside the appropriate range as the predetermined scheduled temperature return time. It is characterized in that the time is set within a range not to be set.

Sixthly, in the temperature recording apparatus of the present invention, in the temperature recording apparatus according to the fourth or fifth aspect, the temperature return scheduled time counting means further comprises: Even if the luggage compartment door is changed from the open state to the closed state until the operation is completed, and is reopened, a new count from the open state does not start.
The temperature recording device is characterized in that the counting is continued until the end without resetting the count that has been continued from before the closed state.

That is, if the luggage compartment door is opened again to load / unload the luggage before the scheduled time for returning to the temperature once counted has completely elapsed, the loading / unloading of the luggage is performed again. When the temperature recovery time starts counting from the initial value again when the room door is opened (that is, resetting the count that was continued before that time) from the initial value, the luggage loaded in the luggage compartment eventually ends The time during which the device is exposed to a temperature outside the proper range is counted with a time interval substantially longer than the scheduled temperature return time, and the counting is completed and an alarm can be generated. By the time, there may be a disadvantage that the quality of the package has already deteriorated due to the abnormal temperature.

Therefore, according to the present invention, when the loading / unloading of the luggage is frequently performed in a short time as described above and the luggage compartment door is opened and closed many times, the continuous frequent loading and unloading is performed. It counts completely without resetting until the above-mentioned expected temperature return time is completely ended from the start of the first operation of the loading / unloading operation of the load. More specifically, the detection of the starting point of the loading / unloading work can be detected by detecting the open state of the cargo room door. Thereby, it is possible to avoid the disadvantage of the delay of the possible alarm generation time (or the prolongation of the alarm stop time) due to the continuous and frequent loading / unloading of the load as described above.

Seventh, in the temperature recording apparatus according to any one of the first to sixth aspects, the alarm generating means may output the alarm when the temperature return scheduled time counting means is continuing the counting. Are displayed as visual information instead of the auditory information.

That is, the alarm generating means according to the present invention does not emit an alarm such as an alarm sound as troublesome auditory information such as an alarm sound even if the temperature abnormality is detected during the scheduled temperature return time as described above (or In addition, the warning may be displayed on the liquid crystal display panel, for example, as visual information that stands out when viewed, instead of the auditory information that is complicated for the driver. Also in this case, if an abnormal temperature is detected at a time other than the scheduled temperature return time, it goes without saying that the same auditory information is used to issue the alarm.

In this way, when it is detected that a temperature abnormality has occurred, even if the temperature abnormality has occurred during the scheduled temperature recovery time, it is determined that the temperature abnormality is appropriately dealt with according to its importance. An alarm is issued by a visual method of displaying an alarm instead of the above-mentioned alarm sound so as to be perceived as a sensation. Therefore, it is possible to alarm an abnormal temperature while avoiding the alarm itself from being complicated.

[0045]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a temperature recording apparatus according to the present invention will be described below in detail with reference to the drawings. FIG. 1 is a diagram showing an outline of the configuration of the main part. The temperature recording device according to the present invention is mounted on a vehicle that loads cargo in a luggage compartment where temperature control is performed, and measures temperature inside a luggage compartment (not shown) at regular time intervals.
And a temperature recording means 201 for recording the temperature data in association with time data when the temperature is measured. Further, a luggage compartment door opening / closing detecting means 205 for detecting opening / closing of a luggage compartment door (not shown) provided at a luggage doorway of the luggage compartment, and an interior of the luggage compartment measured by the temperature measuring means 100 Temperature abnormality determining means 203 for comparing the temperature data with a value in an appropriate range set in advance corresponding to the luggage, and determining whether or not the value is within the appropriate range; Means 205
From the time when it is detected that the luggage compartment door is changed from the open state to the closed state, the counting of the predetermined scheduled temperature return time is started, and the counting is performed until the count reaches the scheduled temperature return time. During the period, continue the counting,
After the count reaches the scheduled temperature return time, the scheduled temperature return time counting means 202 resets the count, and the temperature abnormality determination means 203 determines that the temperature data is an abnormal value outside the proper range. Alarm generating means 300 for generating an alarm as auditory information when the temperature is determined to be abnormal, and when the temperature is determined to be an abnormal value, the temperature return scheduled time counting means 2
02 does not generate the alarm when the count is continuing (or, if the setting is changed, the volume of the alarm sound and the duration of the alarm can be suppressed to generate an alarm), and the temperature is an abnormal value. When it is determined that the scheduled temperature return time counting means 202 has not continued the counting, an alarm generating means 300 for generating the alarm is provided in a main part thereof.

Further, the temperature recovery scheduled time counting means 202 once starts the counting,
Even if the luggage compartment door is changed from the closed state to the open state until the count is completed, and then returns to the closed state, a new count from the new closed state is not started, and the closed state is maintained. Once the count is started without resetting the count that has been continued from before, the count being continued continues to the end.

The above-mentioned temperature return scheduled time counting means 202 is provided with the above-mentioned temperature control means (shown in the figure) which is provided for controlling the temperature of the cargo room of the vehicle as the predetermined scheduled temperature return time. In the case where (omitted) functions normally, a time corresponding to the time required for the temperature of the luggage compartment to return to the appropriate range from an abnormal value outside the appropriate range is used.

Furthermore, when the temperature return scheduled time counting means 202 is continuing the counting, the alarm generating means 300 generates the alarm as visual information instead of auditory information such as an alarm buzzer. This is shown on the liquid crystal display panel screen of the graph display means 400.

Here, the temperature measuring means 100 measures the temperature of the cargo room at regular time intervals by a temperature sensor 102 driven by a sensor driving circuit 101. In addition, the alarm generating means 300 generates an alarm sound to warn the occurrence of the temperature abnormality in the room other than the scheduled temperature return time by the buzzer sounding unit 301, and visually indicates the occurrence of the temperature abnormality during the scheduled temperature return time. Is displayed on the alarm display unit 302.

Further, this temperature recording device has various configurations that perform a so-called temperature recording function, in which monitored temperature data is recorded at each measurement time, similarly to a conventionally used temperature recording device. Needless to say. That is, the time at which the temperature of the luggage compartment was measured at each of the predetermined time intervals is plotted on a time axis taken on the time axis of the graph, and the time-series transition of the temperature data corresponding to the time axis is vertically displayed. Temperature graph display data generating means 204 for generating display data for displaying the temperature changing at each time as a temperature graph on the axis;
Temperature graph display means 400 for displaying the temperature graph on a display screen, operation means 500 for performing input operation and the like for operating the entire operation of the temperature recording apparatus, and information recorded in the temperature recording means 201 And an IC card recording means 600 for recording the same information as in the removable IC card 601.

Among the components of the main part, the temperature recovery scheduled time counting means 202, the temperature abnormality judging means 203, the temperature graph display data generating means 204, and especially the control circuit part of the alarm generating means 300, or the sensor driving circuit 101 As shown in FIG. 2, for each part, an operation unit (CP) such as a microcomputer is used.
U) 200 and the memory unit 700 can be used to construct the arithmetic system. The temperature sensor 10
Needless to say, a connection between the linear element such as 2 and the CPU may be established via an I / F (interface) 206 as shown in FIG.

The temperature measuring means 100, the temperature recording means 201, the temperature graph display data generating means 204, the temperature graph display means 400, the IC card recording means 600, and the IC card 601 of the main components are respectively It goes without saying that a material that performs the same function as that of the related art may be used.

Next, among the main parts in the technology of the present invention, in particular, the temperature recovery scheduled time counting means 202, the temperature abnormality judging means 203, the operating means 500, the alarm generating means 300 and its buzzer sounding section 301 and the alarm display section 302. The outline and operation of the configuration will be described below mainly. FIG. 5 is a schematic flowchart showing the operation of the main part of such a temperature recording apparatus according to the present invention.

When the vehicle equipped with the temperature recording device according to the present invention starts its operation, the temperature recovery scheduled time counting means 202 is operated by the user (driver, loading operator, etc.) through the operating means 500 to input the temperature. The presence or absence of the setting of the scheduled return time, and if it is set, the value t0 of the scheduled temperature return time is input (step 1; hereinafter s)
1).

Then, the temperature return scheduled time counting means 2
02 holds the input information (s2). The operation of selecting whether or not to set the scheduled temperature return time, that is, the operation of selecting whether or not to suppress (or suppress) the temperature abnormality alarm sound during the scheduled temperature return time, and the case of selecting to execute it The operation of inputting the set value of the scheduled temperature return time is, for example, when the vehicle has just started its operation, the IC card 601 or the like is not mounted, and the operation mode is not switched to the driving mode. 6 is automatically displayed on the screen of the alarm display unit 302, for example, as shown in FIG.
A screen for selecting whether or not to stop the temperature abnormality alarm as shown in (a) and a screen for setting a scheduled temperature return time as shown in FIG. 6B are sequentially displayed in this order. Then, when the setting information is input and operated at the same time, the setting information is received inside the temperature recording apparatus according to the present invention, and the temperature return scheduled time counting means 202 is received.
Remembers.

Alternatively, the suppression of the temperature abnormal alarm sound during the expected temperature recovery time is always performed, and the set value of the expected temperature recovery time is fixedly set in advance to a specific suitable value. Needless to say, this may be always performed. Alternatively, the suppression of the temperature abnormality alarm sound is always performed, and the setting value of the scheduled temperature return time may be changed each time as described above. In the present embodiment, the case where only such set values can be changed has been described. For example,
In FIG. 6A, the alarm time setting, that is, a state in which “Yes” is selected as to whether or not to suppress the alarm is selected, and in FIG. 6B, the set time is set to 20 minutes. The states are each shown as an example.

Subsequently, when the operation of inputting the setting of the scheduled temperature return time or the like is completed as described above, the temperature recording apparatus starts its entire operation. First, here, when the vehicle starts the transportation business, an operation of loading the luggage in the luggage compartment or unloading the luggage that has been loaded so far is performed. At this time, in order to load and unload the luggage, the luggage compartment door must be opened once. Therefore, when loading or unloading such luggage, the temperature of the luggage compartment is inevitably affected by the outside air. It starts to change in the direction you do.

When the loading / unloading of such luggage is completed, the luggage compartment door of the vehicle is closed. Then, at this time, the luggage compartment door opening / closing detection means 205 attached to the luggage compartment door detects that the luggage compartment door is closed (Y in s3). Immediately after the closing of the luggage compartment door, the temperature of the luggage compartment starts to return to a predetermined appropriate temperature again by temperature control means such as a refrigerating device.

When it is detected that the luggage compartment door is closed (Y in s3), the temperature recovery scheduled time counting means 202 counts the temperature recovery scheduled time t to t =
It starts from 0 and continues until t = t0 (s4). While the count of the scheduled temperature return time t is started from t = 0 and continues to t = t0 (Y in s5), D = L is used as information for determining that the count is continuing. It is continuously output (s6).

In the meantime, even if the luggage compartment door is opened and closed again, a new count based on the detection of the closed state of the luggage compartment door at that time is not started. In other words, while the counting of t is continued, even if it is detected that the luggage compartment door is newly closed, the temperature recovery scheduled time counting means 202
Does not stop or reset the ongoing counting at all, and continues the ongoing counting until the last t0.

As the clock function used to execute the counting of the expected temperature recovery time t, for example, the clock function normally provided inside the arithmetic unit (CPU) 200 of the microcomputer is preferably used. Can be used. Alternatively, it goes without saying that a dedicated clock function may be separately provided and used.

On the other hand, if the expected temperature return time t is not counted (t = 0), or if the expected temperature return time t
When the count of t has been completed up to t = t0 (N in s5), D = H is output as information for determining that the temperature is outside the expected temperature recovery time, that is, that the counting of t is stopped or ended. (S7).

At this time, especially when the count of the scheduled temperature return time t has already been completed up to t = t0 (Y in s8), the count value of the scheduled temperature return time t is reset to t = 0 (Y in s8). s9). On the other hand, temperature measurement means 1
00 and the temperature abnormality determination means 203
00 represents the temperature data T in the cargo room at a certain time interval Δt.
When the temperature data T is measured (monitored) every time (s10), the temperature abnormality determination unit 203 compares the temperature data T with a value in a proper range set in advance (Tl ≦ T ≦ Th) (s11).
If the temperature data deviates from the range, that is, if T <Tl or Th <T (N in s11),
It is determined that an abnormal value has occurred in the temperature, and information indicating that the abnormal value has occurred; F = H is output, and the information is transmitted to the alarm generating means 300 (s13).

On the other hand, when the temperature data T is within a proper range (Tl ≦ T ≦ Th) (Y in s11), the temperature data T is determined as a normal value, and the temperature data T is determined as a normal value. The information F is output as F = L instead of H, and the information is transmitted to the alarm generating means 300 (s12). Then, a waiting state (not shown) is entered until the temperature data of the next monitoring result of the cargo room temperature is transmitted (not shown), and the temperature data T of the cargo room until the next monitoring time is transmitted. Again, this T is compared with a value within an appropriate range (Tl ≦ T ≦ Th), and the aforementioned s10
Operations similar to the series of operations described in s13 are repeated.
Since the purpose of the outline flowchart of FIG. 5 is to show mainly the operation of alarm generation / suppression among the operations of the temperature recording apparatus according to the present invention, s
Although the respective operations of 10 to s13 and s18 are drawn in such a manner as to be performed continuously with the operations of s1 to s9,
Actually, the operations of s1 to s9, that is, the counting operation of t from the closing of the door, and the operations of s10 to s13 and s18, that is, the operation of detecting the occurrence of abnormal temperature, are basically performed separately in parallel. Needless to say,

Then, when information F = H indicating that the abnormal value has occurred is transmitted from the temperature abnormality determining means 203 (Y in s18), the alarm generating means 300 receives this and at that time, Temperature return scheduled time counting means 2
When the information output from 02 is D = L, that is, during the scheduled temperature return time (Y in s14),
Since the alarm itself is likely to be meaningless during the scheduled temperature recovery time, the generation of the alarm sound is suppressed while avoiding the complexity of the alarm and the operation of stopping the alarm, and, on the other hand, The alarm may be canceled completely, or it may be inconvenient if a situation that really requires an alarm during that time. In order to avoid this, the alarm display unit 302 warns the user of the occurrence of an abnormal temperature. Is displayed on a part of the screen of the temperature graph display means 400 (s15). Alternatively, this warning is displayed
Needless to say, a display means for exclusively displaying it may be provided separately from the temperature graph display means 400 and displayed there. Then, the process enters a waiting state until some input operation such as stopping the manual input of the alarm or resetting the alarm is performed (N in s16). Then, for example, when an alarm reset input is input (Y in s16), a series of operations relating to the alarm are forcibly terminated (reset; s19), return to s3 again, and repeat the operations of s3 to s18 as described above.

However, when information F = H indicating the occurrence of the abnormal value is transmitted from the temperature abnormality determining means 203 (Y in s18), the temperature return scheduled time at that time is determined. If the information output from the counting means 202 is D = H, that is, if it is outside the scheduled temperature return time (N in s14), it is out of the scheduled temperature return time, and the occurrence of a temperature abnormality is warned. The need to do so will be extremely high, so a warning sound (such as a buzzer)
Is generated by the buzzer sounding section 301 (s17).

Alternatively, if the temperature of the luggage compartment measured in the above s10 is not an abnormal value, the information F
= L is output (s12), and the operation of measuring the temperature for each Δt, that is, the operations of s10 to s13 and s18 are repeated. Here, in order to realize the function of determining the generation / suppression of the alarm sound among the above-mentioned operations by the alarm generation means 300, for example, FIG.
As shown in (2), information output from the temperature abnormality determination means 203, that is, information F indicating presence / absence of temperature abnormality (F = H when temperature abnormality occurs as described above, F = L when temperature is normal) And information output from the scheduled temperature return time counting means 202, that is, information on whether or not the scheduled temperature return time has elapsed (D = L during the scheduled temperature return time, and D = H otherwise. ), And outputs a signal of an instruction to generate the alarm sound only when the result at that time is H (that is, only when F = H and D = H). The above-mentioned alarm sound (for example, a buzzer sound) is generated by the buzzer sounding section 301 only when the above-mentioned signal is output from this OR circuit element 303 by using a simple OR circuit element 303. Just do it.

By using such an extremely simple configuration, the central portion in the technique of the present invention can be easily constructed, and the effect is sufficiently effective as described above, which is preferable. Further, in order to display an alarm on the alarm display unit 302 when the temperature return scheduled time is reached when an abnormal value occurs in the temperature, for example, as shown in FIG. Receiving the discrimination information D, which is information D (= L) output from the scheduled return time counting means 202, and the information F = H indicating that an abnormal value has been output, output from the temperature abnormality determination means 203, D
NOT circuit element 304 that inverts and outputs the logic of L = L and OR circuit element 30 similar to the above-described OR circuit element 303
The logical sum is calculated using 3 ′ and a signal is output only when the result at that time is H (that is, when D = L and F = H). The alarm display may be executed by the alarm display unit 302 by using the instruction as a display instruction. In addition, these FIG.
The circuits shown in (b) may be formed separately,
Alternatively, it goes without saying that the OR circuit element 303 may be shared to form a simpler structure.

Finally, when an instruction for forcibly terminating the alarm or forcibly terminating the operation of the temperature recording apparatus itself is input as an interrupt mode in the middle of each of the above operations (Y in s20), Operation is forcibly stopped. In the description of the present embodiment, for the sake of simplicity of the entire description, the main parts of the technology of the present invention, such as forced termination using the interrupt mode and turning off the power switch of the entire temperature recording device, are described. I have only briefly described details that are not directly related.

The relation between the operation of generating the alarm sound and the alarm display according to the present invention and the situation at that time (during the scheduled time for temperature return / outside or the temperature state of the cargo room) is as follows.
In particular, FIG. 4 schematically shows a time-temperature graph when the temperature state is displayed on the temperature graph display means 400. Here, in the figure, the horizontal axis of the graph indicates time, and the vertical axis indicates temperature (expressed in ° C.). Below the graph, the discrimination information D during / out of the scheduled temperature return time and the buzzer sounding (ON / OFF) at that time are shown in the form of a timing chart in order from the top. In FIG. 4, the time axis of the horizontal axis shown in the time-temperature graph is common to the time axis of the timing chart. Further, in FIG. 4, the temperature recording apparatus according to the present invention having the above-described configuration and function is actually used in the situation of time change of temperature, opening / closing of the luggage compartment door, and set value t0 as shown in FIG. It is needless to say that the actual operation of generating an alarm sound is shown in a simulated manner when the above operation is performed. For example, even if the luggage compartment door changes from the open state to the closed state at the time of opening and closing the third luggage compartment door in FIG.
The count operation of t is continued without being reset.

As described above, when a temperature abnormality occurs outside of the expected temperature recovery time, an alarm sound for notifying the temperature abnormality can be issued to surely warn the driver or the like. When the driver hears the alarm and notices that a temperature abnormality has occurred, the driver responds and takes ordinary appropriate measures, such as rechecking the switch of the temperature control engine or rechecking the temperature setting. Can take. On the other hand, if a temperature abnormality occurs during the scheduled temperature recovery time, a visual warning such as an alarm display instead of the above-mentioned alarm sound is provided so that the temperature abnormality is perceived as an importance corresponding to the importance. Since the warning is performed by a simple method, the warning of the temperature abnormality when it is really necessary in the state where the vehicle is operating can be issued every other day accurately while avoiding the trouble of the warning itself.

In the embodiment described above,
The description has been given of the case where the count of the scheduled temperature return time t is started from the point in time when the luggage compartment door changes from the open state to the closed state with the door state change at that time as a trigger. Alternatively, the start timing may be started from the time when the luggage compartment door changes from the closed state to the open state.

In this case, the time for suppressing the alarm sound is counted as the time including the time during which the luggage compartment door is opened and the work of loading and unloading the luggage is performed. It is possible to realize the suppression of alarm (or suppression) and the display of the alarm display in consideration of the problem of quality deterioration of the luggage exposed to the temperature atmosphere outside the appropriate range during the time of such unloading operation. it can. In other words, as the scheduled temperature return time from the point in time when the luggage compartment door is opened, the quality of the load is exposed to a temperature atmosphere outside an appropriate range, particularly focusing on the point of the deterioration of the quality of the load. It is desirable to set the time within a range that does not cause deterioration.

Therefore, the temperature return scheduled time counting means 2
As the scheduled temperature return time t0 used by 02, it is preferable to adopt a time within a range where the quality is not deteriorated even if the luggage is exposed to the room atmosphere at a temperature outside the appropriate range.
Alternatively, in addition to the viewpoint of the time within a range where the quality of the package is not deteriorated, the viewpoint of the time expected to be required for the temperature return corresponding to the output characteristic of the temperature control unit as used in the present embodiment is considered. In consideration of the above, the value of the scheduled temperature return time t0 may be determined.

On the contrary, in view of the time required to return the temperature corresponding to the output characteristic of the temperature control means used in the present embodiment, the time within the range where the quality of the load does not deteriorate is considered. In consideration of the above, the value of the setting data t0 used as the scheduled temperature return time t0 when the counting of the time t is started after the door is closed as in the above embodiment may be determined.

In the above embodiment, the case where the technology of the temperature recording apparatus of the present invention is applied to a freight transportation vehicle such as an insulated truck for transporting fresh foods and the like has been described. In addition, the present invention can be suitably used for transporting a special chemical substance requiring strict temperature control or a load requiring strict temperature control on a high temperature side contrary to a cold temperature.

Further, as still another application example of the present invention, for example, the present invention is also applicable to temperature control in a cargo room such as a warehouse for storing fresh foods and some chemical substances, etc., which require strict temperature control. Needless to say. In such a case, the user to be notified of the alarm is the manager of the warehouse or the person in charge of temperature control instead of the driver or the like. The ringing unit 301, the alarm display unit 302, and the like may be installed in an administrator waiting room or the like where a user such as the administrator is resident, and optimization of the use is considered in consideration of such various use conditions. Needless to say, it is better to perform

[0078]

As described in the detailed description above, according to the present invention, in a temperature recording device used for an insulated car, a refrigerated car, or another transportation vehicle, a temperature abnormality at a scheduled temperature return time is detected. It solves problems such as complexity for drivers and dangers in vehicle driving due to the generation of meaningless alarms, and does not emit an audible alarm when an alarm is not required during the scheduled temperature recovery time. It is possible to provide a temperature recording device provided with an alarm generating means capable of generating a necessary alarm only when necessary and reliably.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a main part of a temperature recording device according to the present invention.

FIG. 2 shows a configuration of a main part of a temperature recording apparatus according to the present invention;
FIG. 3 is a diagram illustrating an example of a schematic configuration in a case where a CPU is mainly configured;

FIG. 3 is a diagram showing a preferred example of a main part of an internal configuration of an alarm generation unit 300 using an OR circuit element 303 and the like.

FIG. 4 shows a practical example of a relationship between an operation for generating an alarm sound and an alarm display according to the present invention and a situation at that time (during a scheduled temperature return time / outside and a temperature state of a cargo room).
FIG. 6 is a diagram schematically showing a time-temperature graph when a temperature state is displayed on a temperature graph display means, in particular.

FIG. 5 is a schematic flowchart showing main operations of the temperature recording device according to the present invention.

FIG. 6 is a diagram showing an example of a screen (a) for selecting whether or not to execute the stop of the temperature abnormality alarm and a screen (b) for setting a scheduled temperature return time, which are displayed on the screen of the alarm display unit 302. It is.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 100 ... Temperature measurement means 201 ... Temperature recording means 202 ... Temperature recovery scheduled time counting means 203 ... Temperature abnormality determination means 204 ... Temperature graph display data generation means 205 ... Luggage door open / close detection means 300 ... Alarm generation means 400 ... Temperature graph display Means 500 Operating means 600 IC card recording means 601 IC card

Claims (7)

[Claims] 1. A temperature recording device mounted on a vehicle for loading luggage in a luggage compartment where temperature control is performed, comprising: a temperature measuring means for measuring the temperature in the luggage compartment at regular time intervals; A temperature recording device for recording the data of the temperature in association with the time data at the time when the temperature was measured, wherein the data of the temperature inside the cargo room measured by the temperature measuring device. Temperature abnormality determining means for comparing with a value in an appropriate range set in advance corresponding to the baggage to determine whether the value is within the appropriate range, and provided at a baggage doorway of the baggage compartment. A luggage compartment door opening / closing detecting means for detecting the opening / closing of the luggage compartment door, and a predetermined time from when the luggage compartment door opening / closing detection means detects that the luggage compartment door is changed from the open state to the closed state. Temperature recovery expected cow Counting, the counting is continued until the count reaches the scheduled temperature return time, and the count is reset after the count reaches the scheduled temperature return time. And alarm generation means for generating an alarm as auditory information when the temperature data is determined to be an abnormal value outside the appropriate range by the temperature abnormality determination means, wherein the temperature is an abnormal value. When it is determined that the temperature is to be reset, the temperature return scheduled time counting means does not generate or suppress the alarm when the counting is continuing, and when the temperature is determined to be an abnormal value, the temperature recovery is performed. An alarm generating means for generating the alarm when the scheduled time counting means does not continue the counting. 2. The temperature recording apparatus according to claim 1, wherein the temperature recovery scheduled time counting means further comprises: after the counting is once started, until the counting is completed, and the cargo room door is closed. Even if the state changes from the open state to the closed state, a new count from the closed state does not start, and the count continued from before the closed state is continuously reset to the end without being reset. A temperature recording device. 3. The temperature recording device according to claim 1, wherein said scheduled temperature return time counting means further includes a predetermined temperature scheduled return time when said temperature control means functions normally. A temperature recording device, wherein the temperature is set to a time corresponding to a time required for the temperature of the luggage compartment to return from the abnormal value outside the appropriate range to the appropriate range. 4. A temperature recording device mounted on a vehicle that loads luggage in a luggage compartment where temperature control is performed, wherein the temperature measurement means measures the temperature inside the luggage compartment at regular time intervals; A temperature recording device for recording the data of the temperature in association with the time data at the time when the temperature was measured, wherein the data of the temperature inside the cargo room measured by the temperature measuring device. Temperature abnormality determining means for comparing with a value in an appropriate range set in advance corresponding to the baggage to determine whether the value is within the appropriate range, and provided at a baggage doorway of the baggage compartment. A luggage door opening / closing detecting means for detecting the opening / closing of the luggage door, and a predetermined time from when the luggage door opening / closing detecting means detects that the luggage door is changed from the closed state to the open state. Temperature recovery expected cow Counting, the counting is continued until the count reaches the scheduled temperature return time, and after the count reaches the scheduled temperature return time, the next time the luggage compartment door open / closed detection is awaited. Return temperature expected return time counting means, and alarm generation for generating an alarm as auditory information using an auditory medium when the temperature abnormality determination means determines that the temperature data is out of the appropriate range. Means, when the temperature is determined to be an abnormal value, when the temperature return scheduled time counting means is continuing the counting, the alarm is not generated or suppressed, and the temperature is abnormal. A warning generating means for generating the warning when the temperature return scheduled time counting means does not continue the counting when it is determined that A temperature recording device, characterized in that: 5. The temperature recording device according to claim 4, wherein said temperature recovery scheduled time counting means further comprises: as said predetermined temperature recovery scheduled time, said package is exposed to an indoor atmosphere having a temperature outside said proper range. A temperature recording apparatus characterized in that the time is set within a range that does not degrade the quality even if the temperature recording is performed. 6. The temperature recording device according to claim 4, wherein the temperature recovery scheduled time counting means further comprises: after the counting is once started, until the counting is completed, the load room door is closed. Even if the state changes from the open state to the closed state and the state returns to the open state, a new count from the open state does not start, and the count continued from before the closed state is continuously reset to the end without being reset. A temperature recording device characterized in that counting is carried out. 7. The temperature recording device according to claim 1, wherein the alarm generation unit is configured to output the alarm when the temperature recovery scheduled time counting unit is continuing the counting. A temperature recording device, which is an alarm generating means for presenting visual information instead of information.