JPH0927990A - Recording method and recording device for radio gas leakage alarm system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To discover the cause of gas leakage in a short time and to accurately grasp the occurrence state of an external disturbance being a cause of a communication fault by recording time information relating to occurrence of gas leakage. SOLUTION: When a gas leakage alarm device 1 detects occurrence of gas leakage, a recorder 7 records time information relating to the detection of gas leakage generation. On the other hand, a fact of occurrence of gas leakage detected by the gas leakage alarm device 1 is sent by a transmitter 5. When a respectively 13 receiving it receives occurrence of gas leakage, the recorder 7 records the time information relating to the reception of occurrence of gas leakage.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a gas leak alarm and a microcomputer gas meter, and wirelessly communicates to the microcomputer gas meter side that a gas leak detected by the gas leak alarm has occurred via radio waves or the like. By doing so, the present invention relates to a wireless gas leak alarm system that issues an alarm and blocks the flow of gas to a gas appliance, and in particular, a wireless gas leak alarm system that records time information related to the occurrence of a gas leak. The present invention relates to a recording method and a recording device.

[0002]

2. Description of the Related Art For example, when installing a gas appliance such as a stove that uses gas as a fuel or an instantaneous water heater in a general house, a gas leak alarm that issues an alarm when a gas leak is detected is installed near the gas appliance. Along with it, we are trying to prevent accidents such as fires due to gas leaks.

On the other hand, recently, a gas meter incorporating a microcomputer (hereinafter referred to as a microcomputer gas meter) is becoming popular in general houses and the like. In this microcomputer gas meter, in addition to the original function of metering the amount of gas used, for example, if there is a gas flow rate that exceeds the total consumption of the gas appliance at the installation destination, among the gas appliances at the installation destination, Abnormality such as gas leakage when there is an abnormally large increase in the gas flow rate compared to the gas flow rate of the gas appliance exhibiting the maximum gas consumption, or when the installed gas appliance is used for an abnormally long time. It has a function of recognizing that a gas has occurred, issuing an alarm and blocking the flow of gas to the gas appliance.

Furthermore, recently, a wireless gas leak alarm system has been proposed in which the above-mentioned gas leak alarm and the microcomputer gas meter are wirelessly communicated with each other to further improve the accident prevention effect. . This wireless gas leak alarm system is provided with a transmitter in the gas leak alarm device and a receiver in the microcomputer gas meter to indicate that a gas leak detected by the gas leak alarm device has occurred.
By transmitting via radio waves to the microcomputer gas meter,
It issues an alarm and blocks the flow of gas to the gas appliances.

[0005]

In the above-described wireless gas leak alarm system, when a gas leak alarm or a microcomputer gas meter detects a gas leak, an alarm is issued and the flow of gas to the gas appliance is cut off. For some reason, this gas leak occurrence detection may frequently occur. In this case, the gas appliance user requests the service center to inspect the gas appliance, etc., but when the inspector inspects the gas appliance, etc., the phenomenon of gas leak occurrence detection cannot be easily reproduced, and It was difficult for the inspector to find out the cause of frequent leak occurrence detection, and it took a long time to find out the cause.

Further, in particular, in the wireless gas leak alarm system, when transmitting the fact that a gas leak detected by the gas leak alarm is generated to the microcomputer gas meter via radio waves or the like, disturbances such as jamming radio waves are generated. Due to the influence, wireless communication may not be performed normally. In this case, the gas leak alarm sends the fact that a gas leak has occurred to the microcomputer gas meter, but the microcomputer gas meter does not perform the operation of interrupting the gas flow to the gas appliance. To eliminate such malfunctions, first,
Although it is required to analyze when and under what circumstances disturbance such as jamming radio waves occurred, accurate information cannot be obtained even when trying to obtain information about the occurrence situation of disturbance from the user of the gas appliance. The current situation was difficult. Therefore, it is extremely difficult to eliminate the malfunction of the microcomputer gas meter due to the occurrence of the disturbance, for example, because it is difficult to accurately grasp the occurrence situation of the disturbance, and the solution of this problem is among the parties concerned. It was strongly requested.

The present invention has been made to solve the above-mentioned problems, and by recording time information relating to the occurrence of gas leakage, the cause of gas leakage occurrence detection can be investigated in a short time and communication can be performed. An object of the present invention is to provide a recording method and a recording device of a wireless gas leak alarm system that can accurately grasp the occurrence state of a disturbance that causes an abnormality.

[0008]

In order to solve the above-mentioned problems, the invention of claim 1 is a gas leak detecting means for detecting the occurrence of gas leak, and shuts off the flow of gas to the gas appliance when the gas leak occurs. The gas leak detecting means is provided with a transmitter, while the gas shutting means is provided with a receiver, and the gas leak detected by the gas leak detecting means indicates that the gas leak has occurred. A wireless gas leak alarm system that issues an alarm and cuts off the flow of gas to a gas appliance by wirelessly communicating to the gas shutoff means side via radio waves and the like between the receiver and the receiver. When the gas leak detection means detects the occurrence of the gas leak, the time information related to the detection of the gas leak is recorded, while the fact that the gas leak has occurred is transmitted by the transmitter and the reception A recording method of a wireless gas leak warning system, wherein the machine records time information related to the gas leak occurrence reception when the machine receives the fact that a gas leak has been transmitted by the transmitter. .

According to the first aspect of the invention, when the gas leak detection means detects the occurrence of the gas leak, the time information related to the detection of the gas leak is recorded. On the other hand, the fact that a gas leak has been detected by the gas leak detection means is transmitted by the transmitter. In response to this, when the receiver receives the notification that a gas leak has occurred, the time information related to the gas leak occurrence reception is recorded.

That is, since the time information related to the detection of the occurrence of the gas leak and the time information related to the reception of the occurrence of the gas leak are recorded, the inspector at the time of inspecting the gas appliance etc.
It is possible to know the time information as to when the detection of occurrence of gas leak has occurred and when the flow of gas to the gas appliance has been cut off at the receiving side.

Therefore, when a gas leak of unknown cause occurs in the user of the gas appliance, the inspector can find out the cause of the gas leak occurrence detection in a short time while referring to the time information. Further, for example, when a communication abnormality occurs, the inspector can accurately grasp the occurrence state of the disturbance that causes the communication abnormality by collating the time information of the transmission side and the reception side. As a result, it is possible to promptly take appropriate communication abnormality countermeasures.

Further, according to the invention of claim 2, the time information related to the detection of the occurrence of the gas leak is the time when the occurrence of the gas leak is detected,
And time information at the time of completion of detection of gas leak occurrence, wherein the time information related to reception of occurrence of gas leak occurrence is time information at the time of reception of gas leak occurrence and at the time of completion of gas leak occurrence reception. The recording method of the wireless gas leak alarm system according to item 1.

According to the second aspect of the present invention, the time information related to the gas leak occurrence detection is the time information at the gas leak occurrence detection time point and the gas leak occurrence detection completion time point, and is related to the gas leak occurrence reception. The time information is time information at the time of receiving the gas leak occurrence and at the time of completing the reception of the gas leak occurrence.

That is, since the time information at the time of gas leak occurrence detection and at the time of gas leak occurrence detection completion, and the time information at the time of gas leak occurrence reception and at the time of gas leak occurrence reception completion are recorded, gas appliances etc. At the time of inspection, the inspector should check when the gas leak occurrence detection occurred and when the gas leak occurrence detection was completed, and when the gas flow to the gas appliance was cut off and the gas flow to the gas appliance was cut off at the receiving side. You can find out the time information about whether or not was released.

Therefore, when a gas leak of unknown cause occurs in the user of the gas appliance, the inspector investigates the cause of the gas leak occurrence detection in a shorter time by referring to the detailed time information. be able to. Further, for example, when a communication abnormality occurs, the inspector can more accurately understand the occurrence status of the disturbance that causes the communication abnormality by collating the detailed time information of the transmitting side and the receiving side. As a result, appropriate countermeasures against communication abnormalities can be promptly taken.

Further, in the invention of claim 3, when the gas leak detection means detects the occurrence of the gas leak, the detection of the gas leak and / or the completion of the detection of the gas leak are continued for a predetermined time. On the condition that while recording time information related to the gas leak occurrence detection, the fact that the gas leak has occurred is transmitted by the transmitter regardless of the duration of the gas leak occurrence detection, When the receiver receives the message that a gas leak has been transmitted by the transmitter, on condition that the gas leak occurrence reception and / or the gas leak occurrence reception completion are continued for a predetermined time. The recording method of the wireless gas leak alarm system according to claim 2, wherein time information related to the reception of the gas leak occurrence is recorded.

According to the third aspect of the present invention, when the gas leak detecting means detects the occurrence of the gas leak, the condition that the gas leak occurrence detection and / or the gas leak occurrence detection completion is continued for a predetermined time. The time information related to the gas leak occurrence detection is recorded in the. On the other hand, the fact that a gas leak has been detected by the gas leak detection means is transmitted by the transmitter regardless of the duration of gas leak occurrence detection. In response to this, when the receiver receives a message that a gas leak has occurred, the gas leak occurrence is provided, provided that the gas leak occurrence reception and / or the gas leak occurrence reception completion continues for a predetermined time. Time information related to reception is recorded.

That is, on the condition that the gas leak occurrence detection and / or the gas leak occurrence detection completion is continued for a predetermined time on the transmitting side, the time information on the transmitting side is recorded, while on the receiving side. The time information on the receiving side is recorded on condition that the gas leak occurrence reception and / or the gas leak occurrence reception completion are continued for a predetermined time. In this case, even if an abnormal signal such as noise is mixed for a short time at the time when the gas leak occurrence detection, the gas leak occurrence detection completion, the gas leak occurrence reception, and the gas leak occurrence reception completion described above are completed, the signal input is not performed. Since time information is recorded on condition that it continues for a predetermined time,
It is possible to obtain highly accurate time information between the transmitting side and the receiving side after the influence of the mixed abnormal signal is removed.

Therefore, when a gas leak of unknown cause occurs in the user of the gas appliance, the inspector refers to the detailed and highly accurate time information and finds the cause of the gas leak occurrence in an even shorter time. You can investigate. Further, for example, when a communication abnormality occurs, the inspector can more accurately grasp the occurrence state of the disturbance that causes the communication abnormality by collating the time information of the transmission side and the reception side. As a result, appropriate countermeasures against communication abnormalities can be promptly taken.

Furthermore, the invention of claim 4 comprises a gas leak detecting means for detecting the occurrence of a gas leak, and a gas shutoff means for shutting off the flow of the gas to the gas appliance when the gas leak occurs, and the gas leak detecting means While a transmitter is provided in the means, a receiver is provided in the gas cutoff means, and the fact that a gas leak detected by the gas leak detection means has occurred is transmitted between the transmitter and the receiver by radio waves or the like. By wirelessly communicating with the gas shutoff means side, an alarm is issued and the flow of gas to the gas appliance is shut off. A wireless gas leak alarm system, wherein the gas leak detection means causes a gas leak. When the gas leak is detected, the time information related to the gas leak occurrence detection is recorded, and when the receiver receives the message that the gas leak is transmitted by the transmitter, the gas leak is detected. A recording apparatus for wireless gas leak alarm system, characterized by comprising a recording means for recording the time information associated with the raw received.

According to the invention of claim 4, the recording means records the time information related to the detection of the occurrence of the gas leak and the time information related to the reception of the occurrence of the gas leak, so that the inspection is performed at the time of inspecting the gas appliance or the like. The person can know the time information about when the gas leak occurrence detection occurs and when the gas flow to the gas appliance is blocked on the receiving side.

Therefore, when a gas leak of unknown cause occurs in the user of the gas appliance, the inspector can find out the cause of the gas leak occurrence detection in a short time while referring to the time information. Further, for example, when a communication abnormality occurs, the inspector can accurately grasp the occurrence state of the disturbance that causes the communication abnormality by collating the time information of the transmission side and the reception side. As a result, it is possible to promptly take appropriate communication abnormality countermeasures.

According to a fifth aspect of the present invention, the time information related to the gas leak occurrence detection is the gas leak occurrence detection time point,
And time information at the time of completion of detection of gas leak occurrence, wherein the time information related to reception of occurrence of gas leak occurrence is time information at the time of reception of gas leak occurrence and at the time of completion of gas leak occurrence reception. 4 is a recording device of the wireless gas leak alarm system described in 4.

According to the fifth aspect of the present invention, the recording means includes the time information at the gas leak occurrence detection time point and the gas leak occurrence detection completion time point, the gas leak occurrence reception time point, and the gas leak occurrence reception completion time point. When recording a gas appliance, the inspector must record when the gas leak occurrence detection occurred and when the gas leak occurrence detection was completed, and when the gas flow to the gas appliance was cut off on the receiving side. Then, it is possible to know the time information about when the interruption of the gas flow to the gas appliance is released.

Therefore, when a gas leak of unknown cause occurs in the user of the gas appliance, the inspector investigates the cause of the gas leak occurrence detection in a shorter time by referring to the detailed time information. be able to. Further, for example, when a communication abnormality occurs, the inspector can more accurately understand the occurrence status of the disturbance that causes the communication abnormality by collating the detailed time information of the transmitting side and the receiving side. As a result, appropriate countermeasures against communication abnormalities can be promptly taken.

According to a sixth aspect of the present invention, the recording means, when the gas leak detecting means detects the occurrence of the gas leak, either or both of the gas leak occurrence detection and the gas leak occurrence detection completion. Recording the time information related to the gas leak occurrence detection on the condition that the gas leak occurs, and when the receiver receives the fact that a gas leak has been transmitted by the transmitter, 6. The time information related to the gas leak occurrence reception is recorded on condition that the leak occurrence reception and / or the gas leak occurrence reception is continued for a predetermined time. It is a recording device of the wireless gas leak alarm system of.

According to the sixth aspect of the present invention, the recording means is provided on the transmitting side on the condition that the gas leakage occurrence detection and / or the gas leakage occurrence detection completion on the transmitting side continue for a predetermined time. While recording the time information, the receiving side records the time information on the receiving side on the condition that the gas leak occurrence reception and / or the gas leak occurrence reception completion continues for a predetermined time. In this case, even if an abnormal signal such as noise is mixed for a short time at the time when the above-described gas leak occurrence detection, gas leak occurrence detection completion, gas leak occurrence reception, and gas leak occurrence reception completion are completed, the recording means , Since the time information of the transmitting side and the receiving side is recorded on condition that the signal input continues for a predetermined time, highly accurate time information of the transmitting side and the receiving side after the influence of the mixed abnormal signal is removed is obtained. be able to.

Therefore, when a gas leak of unknown cause occurs in the user of the gas appliance, the inspector refers to the detailed and highly accurate time information and finds the cause of the gas leak occurrence detection in an even shorter time. You can investigate. Further, for example, when a communication abnormality occurs, the inspector can more accurately grasp the occurrence state of the disturbance that causes the communication abnormality by collating the time information of the transmission side and the reception side. As a result, appropriate countermeasures against communication abnormalities can be promptly taken.

[0029]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a recording method for a wireless gas leak alarm system and a recording apparatus according to the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a block diagram showing a wireless gas leak alarm system according to the present invention, FIG. 2 is a block diagram showing a recording apparatus according to the present invention, and FIGS. 3 to 4 are operations of the present invention. FIG. 5 is a time chart for explanation, and FIG. 5 is a diagram for explaining the operation of the present invention. In addition, in the present embodiment, members having the same function are denoted by the same reference numerals, and a duplicate description thereof will be omitted.

First, the wireless gas leak alarm system of the present invention will be described with reference to FIG.

As shown in the figure, when a gas leak is detected, the transmission side antenna 9 is attached to the gas leak alarm device 1 which issues an alarm and outputs a gas leak occurrence signal A via electric wires 3a and 3b, respectively. The transmitter 5 and the recording device 7 described later are connected. The gas leak occurrence signal A output from the gas leak alarm 1 is supplied to the recording device 7 via the first terminal 8 and is also sent to the transmitter 5. The transmitter 5 converts the gas leak occurrence signal A sent from the gas leak alarm device 1 into a signal format that can be transmitted by an appropriate communication medium such as an electric wave, and the converted signal is passed through a transmission side antenna 9. To send. The gas leak occurrence signal A output from the gas leak alarm 1 is, as shown in FIG.
It is a DC voltage signal in the form of a pulse.

On the other hand, the gas leak occurrence signal transmitted via the transmitting antenna 9 is received by the receiver 13 via the receiving antenna 11. In the receiver 13, the received signal is converted into an optical signal format that can be detected by a photo coupler detection circuit described later. The receiver 13 has an optical line 15
Via a and 15b, respectively, a microcomputer gas meter 17 to which a gas valve 19 for cutting off the flow of gas to a gas instrument (not shown) is connected, and a recording device 7 are connected. The optical signal B converted in the receiver 13 is supplied to the recording device 7 via the second terminal 16 and is also sent to the microcomputer gas meter 17. The microcomputer gas meter 17 converts the received optical signal B into a digital signal format that can be processed by the CPU by a photocoupler detection circuit (not shown),
Based on the converted signal, various processes such as opening / closing control of the gas valve 19 are performed. The optical signal B converted by the receiver 13 is a pulse-shaped ON / OFF optical signal as shown in FIG.

Next, regarding the recording apparatus 7 according to the present invention,
This will be described in detail with reference to FIG.

As shown in the figure, the optical signal B converted in the receiver 13 is input to the photocoupler detection circuit 21 via the second terminal 16. The photocoupler detection circuit 21 photoelectrically converts the received optical signal B into a DC voltage signal, detects whether the potential of this voltage signal exceeds a predetermined value, and if the potential exceeds the predetermined value. Output a predetermined first signal. The first signal is a signal having the same rising or falling timing as that of the optical signal B, although the type and level of the signal are different from those of the optical signal B, and includes the same data as the optical signal B. Can be regarded as

On the other hand, the gas leak occurrence signal A output from the gas leak alarm device 1 is input to the voltage detection circuit 23 via the first terminal 8. The voltage detection circuit 23 detects whether or not the potential of the signal A, which is a pulse-shaped DC voltage, exceeds a predetermined value, and outputs a predetermined second signal if the potential exceeds the predetermined value. The second signal can be regarded as a signal including the same data as the signal A for the same reason as the first signal.

Each of the photocoupler detection circuit 21 and the voltage detection circuit 23 is connected to the power supply rising circuit 29. The power supply startup circuit 29 receives inputs of the first and second signals and supplies the power of the battery 25 via the power supply circuit 27 to each unit such as a CPU described below. Further, a power switch 31 is connected to the power supply startup circuit 29, and even when the power switch 31 is turned on, the power of the battery 25 is supplied to each unit in the same manner as described above. Note that, for example, the CPU is in the power saving mode before power is supplied, and shifts to the normal mode when power is supplied.

Further, the photocoupler detection circuit 21 and the voltage detection circuit 23 include a calendar circuit 33 and a CPU 3.
5 is connected. The calendar circuit 33 has the first and second
Upon receiving the signal input, the time information of year / month / day / hour / minute / second at the time of input of each signal is extracted, and the extracted time information is sent to the CPU 35.

The CPU 35 has a setting switch 37 for setting and inputting the time and ON / OFF of output signals A and B from the gas leak alarm device 1 and the receiver 13 when a gas leak occurs.
Memory card 39 for accumulating and storing off time information
And a liquid crystal display device (hereinafter, referred to as “LC”) that displays on / off time information of the output signals A and B when a gas leak occurs.
D ". ) 41, a ROM (not shown) that stores programs and the like, and a RAM (not shown) that stores data and the like are connected. The CPU 35 receives the input of the first and second signals, reads the time information of year / month / day / hour / minute / second from the calendar circuit 33 at the time of input of each signal, and reads this time information of the memory card 39. A power supply holding signal containing a command for holding the power supply to the CPU 35, which is stored in a predetermined address of the storage area and refers to the on / off durations of the first and second signals described in detail later, or CP
Processing such as sending a power cutoff signal containing a command to cut off the power supply to U35 to the power supply startup circuit 29 is executed.

Next, the operation of the recording device of the wireless gas leak alarm system according to the present invention will be described.

First, the case where the wireless communication between the transmitter 5 and the receiver 13 is normally performed will be described.

When the gas leak alarm 1 detects a gas leak, the gas leak alarm 1 issues an alarm and outputs a gas leak occurrence signal A. The signal A is supplied to the recording device 7 via the first terminal 8, while the transmitter 5, the transmitting side antenna 9, the receiving side antenna 11 and the second terminal 16 are supplied.
Is sent to the recording device 7 as a signal B via.

When these signals A and B are input to the recording device 7, the photocoupler detection circuit 21 photoelectrically converts the received signal B into a DC voltage signal, and the potential of this voltage signal exceeds a predetermined value. If the potential exceeds a predetermined value, the voltage detection circuit 23 outputs a predetermined first signal, while the voltage detection circuit 23 determines that the potential of the pulse-shaped DC voltage A exceeds the predetermined value. It is detected whether or not there is, and if the potential exceeds a predetermined value, a predetermined second signal is output.

These first and second signals are the power supply rising circuit 29.
Is input to the power supply rising circuit 29, the power of the battery 25 is supplied via the power supply circuit 27 to the CPU 35 and the LCD.
It is supplied to each unit such as 41 to shift the CPU 35 from the power saving mode to the normal mode. Then, the CPU 35 takes in the above-mentioned first and second signals, measures the ON / OFF duration of each signal with a timer (not shown), and stores the measured value in a predetermined address of the RAM. First, the CPU 35
Determines whether or not the ON duration of the captured signal has reached the first predetermined time Ta. As a result of this determination, as shown in FIG. 4, when it is determined that the signal ON durations T1 and T3 have not reached the first predetermined time Ta, the CPU 35
Determines that the captured first and second signals are noise,
The time information at the input of this signal is the memory card 3
Do not memorize in 9. Further, the CPU 35 sends a power cutoff signal to the power supply rising circuit 29 to cut off the power supply to the CPU 35. At this time, the power supply to the CPU 35 can be cut off after a certain delay time.

On the other hand, as a result of the above judgment, as shown in FIG. 4, when it is judged that the ON duration T5 of the signal has reached the first predetermined time Ta, the CPU 35 causes the first and second fetched times.
It is determined that the second signal is normal, and as shown in FIG. 3, the time information at the time of input of this signal is used as the calendar circuit 33.
The time information is read from the memory card 39.
The process of storing at a predetermined address in the storage area is executed. At this time, in the memory card 39, as shown in FIG. 5, the input terminal number, ON operation or OFF operation, and year / month / day / hour / minute / at the time of signal ON / OFF input.
Time information of seconds is written as a series of data strings. As the input terminal numbers, identification numbers may be given to the first and second terminals 8 and 16, respectively.

Further, when the CPU 35 confirms the on-continuation end of the fetched first and second signals, it continues to the first and second signals.
It is determined whether or not the off duration of the signal has reached the second predetermined time Tb. As a result of this determination, when it is determined that the off duration time has reached the second predetermined time Tb, the CPU 3
5 sends a power-off signal to the power-up circuit 29, and CP
Shut off power supply to U35.

On the other hand, if the first and second signals are turned on again before the off duration reaches the second predetermined time Tb, the CPU
35 sends a power supply holding signal to the power supply rising circuit 29, and C
The power supply to the PU 35 is held, and the processing is returned to the above-described processing for determining whether or not the ON duration of the signal has reached the first predetermined time Ta. The first and second predetermined times Ta and Tb can be appropriately set by experiments or the like, and the set values can be appropriately changed after the device according to the present invention is installed.

As described above, when the wireless communication between the transmitter 5 and the receiver 13 is normally performed, the inspector operates the recording device 7 to display the gas leak occurrence state on the LCD 41. For example, on the LCD 41, the time information at the time of turning on / off the gas leak occurrence signal A (second signal) of the gas leak alarm device 1 and on / off of the signal B (first signal) received by the receiver 13 are displayed. The time information at the time of input is displayed. As a result, the inspector can know the gas leak detection status of the gas leak alarm device 1 and, by collating the time information of both, the wireless communication between the transmitter 5 and the receiver 13 is normal. You can check whether it was done in. If a printer is connected to the CPU 35, the gas leak detection status of the gas leak alarm device 1 can be printed on the paper surface. In addition, CPU35,
By connecting to a public line via a communication interface such as a modem, the gas leak detection status of the gas leak alarm device 1
It can also be obtained at a remote location.

Next, a case where the wireless communication between the transmitter 5 and the receiver 13 is not normally performed will be described. In addition,
In this description, the description will be avoided by focusing on the differences from the case where wireless communication is normally performed.

There are two possible situations in which the wireless communication between the transmitter 5 and the receiver 13 is not normally performed. That is, the transmission signal from the transmitter 5 is the receiver 13
It is considered that the receiver 13 cannot receive the signal, and the receiver 13 receives some signal although the transmitter 5 does not transmit the signal.

First, the transmission signal from the transmitter 5 is the receiver 1
Regarding the case where the signal cannot be received due to No. 3, on the transmitting side, as described above, the time information at the time of ON / OFF input of the signal A (second signal) is written in the memory card 39 of the recording device 7, On the other hand, on the receiving side, no information is written in the memory card 39 of the recording device 7. Therefore, only the time information at the time of turning on / off the second signal is written in the memory card 39 in this case.

If the receiver 13 receives some signal even though no signal is transmitted from the transmitter 5, no information is stored in the memory card 39 of the recording device 7 on the transmitting side. Although not written, on the other hand, on the receiving side, the time information at the time of ON / OFF input of any signal received by the receiver 13 is written in the memory card 39 of the recording device 7. Therefore, in this case, only the time information at the time of ON / OFF input of any signal received by the receiver 13 is written in the memory card 39.

As described above, in the case where the wireless communication between the transmitter 5 and the receiver 13 is not normally performed, if the inspector operates the recording device 7 to display the gas leakage occurrence state on the LCD 41. The inspector can know the gas leak detection status of the gas leak alarm device 1 and, by collating the time information of both, the wireless communication between the transmitter 5 and the receiver 13 can be normally performed. I can confirm that there was a case that I was not forgotten. In this case, time information at the time of turning on / off the gas leak occurrence signal A (second signal) of the gas leak alarm device 1 and time of turning on / off the signal B (first signal) received by the receiver 13 It is possible to analyze what kind of malfunction occurred at what time by referring to the time information in, and it is possible to promptly take measures to eliminate the malfunction based on the analysis result.

Finally, in the present embodiment, one recording device is used to record the gas leak detection status on both the transmitting side and the receiving side, but the present invention is not limited to this. The recording device may be configured to be provided on each of the transmitting side and the receiving side.

[0055]

According to the invention of claim 1, since the time information related to the detection of the occurrence of the gas leak and the time information related to the reception of the occurrence of the gas leak are recorded, the inspector at the time of inspecting the gas appliance or the like. When did the gas leak detection detection occur?
And it is possible to know the time information about when the flow of gas to the gas appliance is cut off at the receiving side.

Therefore, when a gas leak of unknown cause occurs in the user of the gas appliance, the inspector can find out the cause of the gas leak occurrence detection in a short time while referring to the time information. Further, for example, when a communication abnormality occurs, the inspector can accurately grasp the occurrence state of the disturbance that causes the communication abnormality by collating the time information of the transmission side and the reception side. As a result, it is possible to promptly take appropriate communication abnormality countermeasures.

According to the second aspect of the present invention, the time information at the gas leak occurrence detection time point and the gas leak occurrence detection completion time point, the gas leak occurrence reception time point, and the gas leak occurrence reception completion time point information are provided. Since it is recorded, when inspecting a gas appliance, the inspector must check when the gas leak occurrence detection occurs and when the gas leak occurrence detection is completed, and when the gas flow to the gas appliance is cut off on the receiving side. It is possible to know time information about when the interruption of the flow of gas to the gas appliance is released.

Therefore, when a gas leak of unknown cause occurs in the user of the gas appliance, the inspector investigates the cause of the gas leak occurrence detection in a shorter time by referring to the detailed time information. be able to. Further, for example, when a communication abnormality occurs, the inspector can more accurately understand the occurrence status of the disturbance that causes the communication abnormality by collating the detailed time information of the transmitting side and the receiving side. As a result, appropriate countermeasures against communication abnormalities can be promptly taken.

Further, according to the invention of claim 3, the time information on the transmitting side is provided on the condition that the gas leakage occurrence detection and / or the gas leakage occurrence detection completion are continued for a predetermined time on the transmitting side. Meanwhile, on the receiving side, the time information on the receiving side is recorded on condition that the reception of the gas leakage occurrence and / or the completion of the reception of the gas leakage occurrence continues for a predetermined time. In this case, even if an abnormal signal such as noise is mixed for a short time at the time when the gas leak occurrence detection, the gas leak occurrence detection completion, the gas leak occurrence reception, and the gas leak occurrence reception completion described above are completed, the signal input is not performed. Since the time information is recorded under the condition that it continues for a predetermined time, it is possible to obtain highly accurate time information of the transmitting side and the receiving side after the influence of the mixed abnormal signal is removed.

Therefore, when a gas leak of unknown cause occurs in the user of the gas appliance, the inspector refers to the detailed and highly accurate time information and determines the cause of the gas leak occurrence detection in an even shorter time. You can investigate. Further, for example, when a communication abnormality occurs, the inspector can more accurately grasp the occurrence state of the disturbance that causes the communication abnormality by collating the time information of the transmission side and the reception side. As a result, appropriate countermeasures against communication abnormalities can be promptly taken.

Further, according to the invention of claim 4, since the recording means records the time information related to the detection of the occurrence of the gas leak and the time information related to the reception of the occurrence of the gas leak,
When inspecting a gas appliance or the like, the inspector can know the time information about when the gas leak occurrence detection occurred and when the distribution of gas to the gas appliance was interrupted on the receiving side.

Therefore, when a gas leak of unknown cause occurs in the user of the gas appliance, the inspector can find out the cause of the gas leak occurrence detection in a short time while referring to the time information. Further, for example, when a communication abnormality occurs, the inspector can accurately grasp the occurrence state of the disturbance that causes the communication abnormality by collating the time information of the transmission side and the reception side. As a result, it is possible to promptly take appropriate communication abnormality countermeasures.

Further, according to the invention of claim 5, the recording means has the time information at the gas leak occurrence detection time point and the gas leak occurrence detection completion time point, the gas leak occurrence reception time point, and the gas leak occurrence reception completion time point. Since time information is recorded, when inspecting a gas appliance, etc., the inspector must check when the gas leak occurrence detection occurred and when the gas leak occurrence detection was completed, and when the gas distribution to the gas appliance occurred on the receiving side. It is possible to know time information as to when the gas flow was cut off and the gas flow to the gas appliance was cut off.

Therefore, when a gas leak of unknown cause occurs in the user of the gas appliance, the inspector refers to the detailed time information to find out the cause of the gas leak occurrence detection in a shorter time. be able to. Further, for example, when a communication abnormality occurs, the inspector can more accurately understand the occurrence status of the disturbance that causes the communication abnormality by collating the detailed time information of the transmitting side and the receiving side. As a result, appropriate countermeasures against communication abnormalities can be promptly taken.

According to the sixth aspect of the invention, the recording means transmits on the condition that, on the transmitting side, either or both of the gas leak occurrence detection and the gas leak occurrence detection completion are continued for a predetermined time. While recording time information on the side,
On the receiving side, the time information on the receiving side is recorded on condition that the gas leak occurrence reception and / or the gas leak occurrence reception completion continue for a predetermined time. in this case,
Even when an abnormal signal such as noise is mixed for a short time at the time when the gas leak occurrence detection, the gas leak occurrence detection completion, the gas leak occurrence reception, and the gas leak occurrence reception completion described above are performed, the recording unit inputs the signal. Since the time information of the transmitting side and the receiving side is recorded on the condition that is continued for a predetermined time, it is possible to obtain highly accurate time information of the transmitting side and the receiving side after the influence of the mixed abnormal signal is removed. .

Therefore, when a gas leak of unknown cause occurs in the user of the gas appliance, the inspector refers to the detailed and highly accurate time information to find the cause of the gas leak occurrence in an even shorter time. You can investigate. Further, for example, when a communication abnormality occurs, the inspector can more accurately grasp the occurrence state of the disturbance that causes the communication abnormality by collating the time information of the transmission side and the reception side. As a result, there is an extremely excellent effect that appropriate countermeasures for communication abnormalities can be promptly taken.

[Brief description of drawings]

FIG. 1 is a block diagram showing a wireless gas leak alarm system according to the present invention.

FIG. 2 is a block configuration diagram showing a recording apparatus according to the present invention.

FIG. 3 is a time chart diagram for explaining the operation of the present invention.

FIG. 4 is a time chart diagram for explaining the operation of the present invention.

FIG. 5 is a diagram for explaining the operation of the present invention.

[Explanation of symbols]

 1 Gas Leak Alarm 3a Electric Wire 3b Electric Wire 5 Transmitter 7 Recording Device 8 First Terminal 9 Transmitting Antenna 11 Receiving Antenna 13 Receiver 15a Optical Line 15b Optical Line 16 Second Terminal 17 Microcomputer Gas Meter 19 Gas Valve 21 Photocoupler Detection Circuit 23 Voltage detection circuit 25 Battery 27 Power supply circuit 29 Power supply rising circuit 31 Power supply switch 33 Calendar circuit 35 CPU 37 Setting switch 37 39 Memory card 41 Liquid crystal display (LCD) A Gas leak occurrence signal (second signal) B Optical signal (First signal) Ta first predetermined time Tb second predetermined time

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Zhang Yi 1500, Onjuku, Susono-shi, Shizuoka Prefecture Yazaki Corporation

Claims (6)

[Claims] 1. A gas leak detecting means for detecting the occurrence of a gas leak, and a gas shutoff means for shutting off the flow of gas to a gas appliance when the gas leak occurs, and a transmitter is provided in the gas leak detecting means, A receiver is provided in the gas blocking means,
An alarm is issued by wirelessly communicating to the gas shutoff means side between the transmitter and the receiver that the gas leak detected by the gas leak detection means has occurred, via radio waves or the like. A wireless gas leak alarm system adapted to cut off the flow of gas to a gas appliance, wherein the gas leak detection means detects a gas leak occurrence,
While recording time information related to the gas leak occurrence detection, the fact that the gas leak has occurred is transmitted by the transmitter, and the receiver notifies that the gas leak transmitted by the transmitter has occurred. A method of recording a wireless gas leak alarm system, characterized in that when received, time information related to the reception of the gas leak occurrence is recorded. 2. The time information related to the gas leak occurrence detection is time information at a gas leak occurrence detection time point and a gas leak occurrence detection completion time point, and the time information related to the gas leak occurrence reception is a gas leak occurrence time. The recording method of the wireless gas leak alarm system according to claim 1, wherein the information is time information at the time of occurrence reception and at the time of completion of gas leak occurrence reception. 3. When the gas leak detection means detects the occurrence of the gas leak, the gas leak occurrence detection and / or the completion of the gas leak occurrence detection are continued for a predetermined period of time. While recording time information related to leak occurrence detection, the fact that the gas leak has occurred is transmitted by the transmitter regardless of the duration of the gas leak occurrence detection, and the receiver receives the transmitter information. When the message that the gas leak has been transmitted is received, the gas leak occurrence reception is performed on condition that the gas leak occurrence reception and / or the gas leak occurrence reception completion are continued for a predetermined time. The recording method of the wireless gas leak alarm system according to claim 2, wherein the related time information is recorded. 4. A gas leak detection means for detecting the occurrence of a gas leak, and a gas shutoff means for shutting off the flow of gas to a gas appliance when the gas leak occurs, and a transmitter is provided in the gas leak detection means, A receiver is provided in the gas blocking means,
An alarm is issued by wirelessly communicating to the gas shutoff means side between the transmitter and the receiver that the gas leak detected by the gas leak detection means has occurred, via radio waves or the like. A wireless gas leak alarm system adapted to cut off the flow of gas to a gas appliance, wherein the gas leak detection means detects a gas leak occurrence,
The time information related to the gas leak occurrence detection is recorded, and the time information related to the gas leak occurrence reception is recorded when the receiver receives the fact that the gas leak transmitted by the transmitter has occurred. A recording device for a wireless gas leak warning system, comprising: 5. The time information related to the gas leak occurrence detection is time information at a gas leak occurrence detection time point and a gas leak occurrence detection completion time point, and the time information related to the gas leak occurrence reception is a gas leak occurrence time. The recording device of the wireless gas leak alarm system according to claim 4, wherein the time information is the time information at the time of occurrence reception and the time of completion of gas leak occurrence reception. 6. The recording means, when the gas leak detecting means detects the occurrence of a gas leak, the gas leak occurrence detection and / or the gas leak occurrence detection completion are continued for a predetermined time. In the condition, while recording time information related to the gas leak occurrence detection, the receiver,
When the gas leak transmitted by the transmitter is received, the gas leak is received under the condition that the gas leak occurrence reception and / or the gas leak occurrence reception completion are continued for a predetermined time. The recording device of the wireless gas leak alarm system according to claim 5, wherein time information related to generation and reception is recorded.