JP4867739B2 - Gas appliance monitoring device - Google Patents

Description

  The present invention arranges a regulator and a gas meter for adjusting a gas pressure in the middle of a gas supply path connected to a gas cylinder, and monitors the use status of a plurality of gas appliances connected to a gas pipe after passing through the gas meter. The present invention relates to a gas appliance monitoring apparatus, and more particularly to a gas appliance monitoring apparatus that executes a predetermined leakage confirmation processing mode based on a leakage inspection command transmitted from a base station.

  Conventionally, this type of gas shut-off device includes a flow sensor that detects the flow rate of the gas flowing in the gas flow path, a flow signal transmitter that transmits the flow of gas detected by the flow sensor as a flow signal, and an upstream of the flow sensor. Electrically connected to the pressure sensor for detecting the gas pressure in the gas flow path, the pressure signal transmitter for transmitting the pressure fluctuation detected by the pressure sensor as a pressure signal, the flow signal transmitter and the pressure signal transmitter In the gas leakage detection device comprising the calculation means connected to the flow rate signal determination means for determining the presence or absence of the flow rate signal from the flow rate signal transmitter and the fluctuation of the pressure signal from the pressure signal transmitter. When the flow signal is determined to be “None” by the pressure signal determination unit and the flow signal determination unit, the pressure variation determined by the pressure signal determination unit is referred to, and the pressure variation is determined by a predetermined range. When it is determined that the inner, and leakage determination means for transmitting the leakage signal, the gas leakage detection device consisting of is disclosed (see Patent Document 1).

In addition, a flow rate measurement unit that outputs a flow rate signal corresponding to the amount of gas passing through, a shut-off unit that shuts off and opens the gas passage downstream from the device, and a flow rate signal that does not exist during a specific investigation period are monitored. The flow rate time zone is detected and held, and after that, when there is no flow rate time zone, a no flow rate learning unit that outputs a pressure inspection request signal, and when the flow rate signal is not received in the no flow rate time zone, the cutoff unit is instructed to shut off A gas shut-off device is disclosed that includes a pressure inspection unit that detects whether or not the gas passage blocked by the pressure detection unit that detects pressure fluctuations does not drop more than a predetermined value within a predetermined time. (For example, refer to Patent Document 2).
JP-A-6-258170 JP-A-8-121863

  However, the conventional configuration disclosed in Patent Document 1 uses a characteristic in which the gas pressure adjusted in a normal use state is affected by a change in the outside air temperature and changes in the time zone when the gas pressure varies. , It is to detect gas leakage from the gas flow path upstream of the gas meter by monitoring the pressure fluctuation in the state where the gas appliance is not used, and it is necessary to spend a certain amount of time to check the pressure fluctuation. There has been a problem that the battery cannot be exhausted for leak inspection, or the pressure fluctuation cannot be detected accurately in response to changes in the outside air temperature that varies depending on the season.

  Further, the conventional configuration disclosed in Patent Document 2 detects a gas leak in the gas flow path on the downstream side of the gas meter by monitoring the pressure fluctuation by closing the shut-off valve in a time zone when the gas appliance is not used. Thus, there is a problem in that gas leakage in the gas flow path on the upstream side of the gas meter cannot be detected in the form of being supplied from a cylinder such as LP gas.

The invention of the present application solves the above-mentioned problems. A gas meter having a gas flow rate and pressure measuring function and a cutoff function has a built-in wireless module for transmitting and receiving leakage inspection information to and from a gas pressure regulator, and a leakage inspection command. The gas appliance monitoring apparatus is provided that can shut off the flow path on the cylinder side by transmitting and detect a gas leak on the upstream side of the gas meter using a pressure measurement function built in the gas meter.

  In order to solve the above-described conventional problems, the gas appliance monitoring apparatus of the present invention has a gas pressure regulator unit and gas meter for adjusting the gas pressure arranged in the middle of a gas supply path connected to a gas cylinder, and passes through the gas meter. A gas appliance monitoring device equipped with a wireless module that can monitor the usage status of a plurality of gas appliances connected to a later pipe and can directly transmit and receive data using a communication line other than a telephone line. The gas meter has a flow rate measuring means for measuring the gas flow rate, a gas shut-off valve that shuts off the gas flow path in the event of an abnormality, and a control circuit that performs predetermined processing based on the measurement result of the flow rate measuring means and outputs the flow rate information A pressure detection means for detecting the pressure in the gas flow path, a leakage judgment means for judging a gas leakage state from the output of the pressure detection means, and transmission / reception of information with a plurality of destinations A meter wireless module to be performed, a communication switching means for switching a communication frequency band according to a partner, and a battery power source for driving, and the meter wireless module is configured integrally with the control circuit in the gas meter. A gas pressure adjusting means for adjusting to a predetermined gas pressure, a gas supply, and a gas frequency adjusting unit having a communication frequency band between at least a base station and a gas pressure adjusting unit A cylinder-side shut-off valve that cuts off the path, a cylinder-side wireless module that can transmit and receive in a predetermined communication frequency band, and a driving battery power supply; and the control circuit is based on flow rate information of the flow rate measuring means. Having a device use confirmation means for judging whether or not the device is used, and receiving a leakage inspection command transmitted from the base station, the device use confirmation means that the device is not used. A first leak check mode for closing the cylinder-side shut-off valve in the gas pressure regulator unit to perform a leak check operation, and a second leak check operation by closing the gas shut-off valve in the gas meter. A leakage confirmation mode, and the second leakage confirmation mode is performed when it is determined that there is a leakage in the first leakage confirmation mode.

  According to the above invention, the wireless module capable of transmitting and receiving leakage inspection information between the wireless module capable of communicating with the base station using wireless communication means other than the telephone line and the gas pressure regulator provided on the gas cylinder side. Since the module is integrated into the control circuit board with the measurement function and shut-off function in the gas meter, it is possible to communicate with the base station without using a telephone line simply by installing the gas meter. It is possible to communicate smoothly with the base station without being affected by the congestion status of the equipment, and to transmit various instrument information acquired by the gas meter to the base station quickly and accurately, and based on instructions from the base station Processing can be performed accurately.

  Further, when a leakage inspection command is transmitted from the base station, a predetermined confirmation process is performed. First, the cylinder side shut-off valve in the gas pressure regulator unit is closed, and the gas flow path including the gas supply path upstream of the gas meter is included. When a gas leak test is performed and it is determined that there is a leak in the test results, the gas shut-off valve in the gas meter is closed and the gas leak test in the gas flow path downstream from the gas meter is performed. When a gas leak occurs, it is possible to specify whether the gas leak location is upstream or downstream of the gas meter, and prompt treatment is possible.

  Also, by sending a leak inspection command from the base station, it is determined whether or not the leak inspection is possible. Therefore, it is possible to shut off the cylinder side gas supply path and automatically perform a leak inspection upstream from the gas meter. This eliminates the need for the gas company to go to the customer's house and perform the inspection, thereby saving labor. be able to.

The gas appliance monitoring apparatus according to the present invention enables communication with the base station and the gas pressure regulator by simply installing a gas meter without using a telephone line, and is not affected by the congestion status of the line. In addition, various information from the gas meter can be transmitted smoothly.

  Further, when a leakage inspection command is transmitted from the base station, a predetermined confirmation process is performed, and first, the cylinder side shut-off valve in the gas pressure regulator unit is closed, and the gas flow path including the gas supply path upstream of the gas meter is included. When a gas leak test is performed and it is determined that there is a leak in the test results, the gas shut-off valve in the gas meter is closed and the gas leak test in the gas flow path downstream from the gas meter is performed. When a gas leak occurs, it is possible to specify whether the gas leak location is upstream or downstream of the gas meter, and prompt treatment is possible.

  Also, by sending a leak inspection command from the base station, it is determined whether or not the leak inspection is possible. Therefore, it is possible to shut off the cylinder side gas supply path and automatically perform a leak inspection upstream from the gas meter. This eliminates the need for the gas company to go to the customer's house and perform the inspection, thereby saving labor. be able to.

  According to a first aspect of the present invention, a gas pressure regulator unit for adjusting a gas pressure and a gas meter are arranged in the middle of a gas supply path connected to a gas cylinder, and a plurality of gas appliances connected to piping after passing through the gas meter. This is a gas appliance monitoring device equipped with a wireless module that can monitor the usage status and can directly send and receive data with multiple destinations using communication lines other than telephone lines. The gas meter measures the flow rate of gas. Means, a gas shut-off valve that shuts off the gas flow path in the event of an abnormality, a control circuit that performs predetermined processing based on the measurement result of the flow rate measuring means and outputs the flow rate information, and a pressure that detects the pressure in the gas flow path A detection means, a leakage judgment means for judging a gas leakage state from the output of the pressure detection means, a meter wireless module for transmitting / receiving information to / from a plurality of counterparts, and depending on the counterparts A communication switching means for switching a communication frequency band, and a driving battery power source, wherein the meter wireless module is configured integrally with the control circuit and housed in the gas meter, and at least a communication frequency band with a base station And a gas pressure regulator unit, the gas pressure regulator unit includes a gas pressure adjusting means for adjusting to a predetermined gas pressure, a cylinder-side cutoff valve for cutting off a gas supply path, and a predetermined pressure A cylinder-side radio module capable of transmitting and receiving in the communication frequency band, and a battery power source for driving, and the control circuit determines whether or not the instrument is used based on flow rate information of the flow rate measuring means. Having a means for receiving a leakage inspection command transmitted from the base station, the instrument use confirmation means determines that the instrument is not being used, and A first leakage confirmation mode in which a valve side shut-off valve is closed to perform a leakage confirmation operation; and a second leakage confirmation mode in which the gas shut-off valve in the gas meter is closed to perform a leakage confirmation operation. The second leakage confirmation mode is performed when it is determined that there is “leakage” in the confirmation mode.

  And a wireless module capable of communicating with the base station using a wireless communication means other than a telephone line, and a wireless module capable of transmitting and receiving leakage inspection information between the gas pressure regulator provided on the gas cylinder side, Since it is integrated into the control circuit board with the measurement function and shut-off function in the gas meter, it is possible to communicate with the base station without using a telephone line just by installing the gas meter, and the situation of the line congestion Communication with the base station can be performed smoothly without being affected, and various instrument information acquired by the gas meter can be quickly and accurately transmitted to the base station, and various processing based on instructions from the base station can be performed accurately. Can be implemented.

Further, when a leakage inspection command is transmitted from the base station, a predetermined confirmation process is performed. First, the cylinder side shut-off valve in the gas pressure regulator unit is closed, and the gas flow path including the gas supply path upstream of the gas meter is included. When a gas leak test is performed and it is determined that there is a leak in the test results, the gas shut-off valve in the gas meter is closed and the gas leak test in the gas flow path downstream from the gas meter is performed. When a gas leak occurs, it is possible to specify whether the gas leak location is upstream or downstream of the gas meter, and prompt treatment is possible.

  Also, by sending a leak inspection command from the base station, it is determined whether or not the leak inspection is possible. Therefore, it is possible to shut off the cylinder side gas supply path and automatically perform a leak inspection upstream from the gas meter. This eliminates the need for the gas company to go to the customer's house and perform the inspection, thereby saving labor. be able to.

  According to a second aspect of the present invention, the meter radio module performs communication using a communication frequency band different from that of the radio module for communication with the base station and the radio module for communication with the gas pressure regulator unit. The wireless communication module is an area communication wireless module having a specific low-power wireless communication frequency band, and the wireless communication module with a base station is a wide area communication wireless module having a wide communication frequency band. .

  Then, a wide area communication wireless module that can communicate with the base station by carrier direct and an area communication wireless module that can communicate within a predetermined range using a specific low-power wireless communication frequency band are configured integrally with the control circuit board. Communicating information on the communication line other than the base station and the telephone line, and transmitting leakage inspection information to / from the gas pressure regulator provided on the gas cylinder side using a specific low-power wireless communication frequency band Therefore, just send a leak test command from the base station, and if it is possible to determine whether the leak test is possible, check the leak on the cylinder side radio module of the gas pressure regulator unit. Therefore, it is not necessary for the gas company to go to the customer's house and perform the inspection, and labor saving of the inspection can be achieved.

  According to a third aspect of the present invention, in the first leakage confirmation mode, the presence or absence of flow rate information from the flow rate measuring means is confirmed by a leakage inspection command from the base station. Sends a shut-off command, closes the cylinder-side shut-off valve, and confirms the leakage status based on whether or not the gas pressure change detected by the pressure detection means is within the specified range. It is characterized by being in a standby state until it is done.

  Then, after receiving the leakage inspection command from the base station by the wide area communication wireless module, when the state of no flow rate is detected by the flow rate information from the flow rate measurement means after entering the leakage inspection mode, the gas pressure provided on the gas cylinder side A signal for starting leakage inspection is transmitted to the cylinder-side radio module integrally attached to the regulator using a specific low power radio communication frequency band, and this signal is received and attached to the gas pressure regulator. The cylinder side shut-off valve is closed, the gas pressure change state is confirmed by the pressure detection means built in the gas meter, and the presence or absence of leakage is judged from the gas pressure change within a predetermined period, thereby including the flow path upstream from the gas meter. Leakage inspection can be performed.

  Also, when entering the leak test mode, if the flow rate measuring means confirms that there is a flow rate, it is judged that the instrument is in use, and the leak check operation is performed as a leak test standby mode until it is confirmed that there is no flow rate. This is done when no flow is confirmed, and the gas station conducts a regular leak inspection conducted by the gas company or a leak report from the base station to the gas meter. By sending a leak inspection command, the gas meter itself has the self-check function to acquire, judge, and execute the inspection information to determine the state that can be inspected, and greatly contribute to labor saving of inspection. In particular, it is possible to perform a leakage inspection of a gas supply path including a flow path upstream from the gas meter.

According to a fourth aspect of the present invention, in the second leak check mode, the leak check operation is performed by checking the presence / absence of flow rate information from the flow rate measuring means by a leak check command from the base station, and closing the gas shut-off valve when there is no flow rate. The leakage state is checked based on whether or not the gas pressure change detected by the pressure detection means is within a predetermined range, and if there is a flow rate, the state is in a standby state until a state without a flow rate is confirmed. Is.

  Then, after receiving the leakage inspection command from the base station by the wide-area communication wireless module, when the state of no flow rate is detected by the flow rate information from the flow rate measuring means after entering the leakage inspection mode, the gas cutoff valve built in the gas meter Is closed, and the state of gas pressure change is confirmed by the pressure detection means built in the gas meter, and the leakage inspection of the flow path downstream from the gas meter is performed by judging the presence or absence of leakage from the gas pressure change within a predetermined period. It is possible to specify whether the leak location is upstream or downstream from the gas meter by performing when the “leak” is detected in the first leak confirmation mode.

  Also, when entering the leak test mode, if the flow rate measuring means confirms that there is a flow rate, it is judged that the instrument is in use, and the leak check operation is performed as a leak test standby mode until it is confirmed that there is no flow rate. This is done when no flow is confirmed, and the gas station conducts a regular leak inspection conducted by the gas company or a leak report from the base station to the gas meter. By sending a leak inspection command, the gas meter itself has the self-check function to acquire, judge, and execute the inspection information to determine the state that can be inspected, and greatly contribute to labor saving of inspection. In particular, it is possible to perform a leakage inspection on the flow path downstream of the gas meter.

  The fifth invention is characterized in that when a sudden gas pressure change is confirmed during the execution of the leak check operation, the shutoff valve is returned to the open state to interrupt the leak check operation.

  When the gas pressure detected by the gas pressure detecting means suddenly changes in the decreasing direction during the leak test, it is determined that the gas appliance has been used, and the cylinder side shut-off valve or the gas shut-off valve is opened. It is restored and gas supply is started, and the leak inspection is interrupted to give priority to the use of gas appliances, thereby improving usability.

  In the sixth aspect of the invention, when the leak inspection result is reported to the base station by the wide area communication wireless module and the return permission command is received, the area communication wireless module transmits the leakage inspection result to the cylinder side wireless module, and the cylinder side shut-off valve is returned to the open state. Thus, the gas supply operation is enabled.

  When the leak inspection is completed, the result is transmitted to the base station. If there is no abnormality, the cylinder side shut-off valve is opened by the communication function using the specific low power radio frequency band based on the return permission command transmitted from the base station. The gas supply is started after returning to the open state, and the return operation is automatically executed only by the return permission command from the base station, which can greatly contribute to labor saving of inspection.

  In the seventh aspect of the invention, when the leak inspection result is reported to the base station by the wide area communication radio module and the return prohibition instruction is received, the area communication radio module transmits the leak check result to the cylinder side radio module and keeps the cylinder side shut-off valve in the shut-off state. Thus, the gas supply operation is disabled.

  And when the leak inspection is completed, the result is sent to the base station, and if there is an abnormality, the cylinder side shut-off valve is kept closed and the gas supply is stopped based on the return prohibition command sent from the base station Thus, the return prohibition operation is automatically executed by the return prohibition command from the base station, and the safety until the inspection work is performed can be ensured.

  According to an eighth aspect of the invention, the area communication wireless module enables communication with a specific terminal device in addition to communication with the gas pressure regulator unit, and transmits the leakage confirmation information to the specific terminal device when it is transmitted. It is characterized by that.

  And, by enabling communication with a specific terminal device such as a TV or a mobile phone using the area communication wireless module built in the gas meter, it becomes possible to transmit information of a leakage confirmation inspection that is automatically performed, The inspection status and the inspection result can be displayed on the screen of the television or mobile phone, and it is possible to fulfill the duty of notifying the consumer automatically and in real time.

  The ninth invention is characterized in that, when the leakage confirmation operation is performed, the progress information is displayed on the display terminal device in the remaining time or the scheduled completion time.

  And when leakage inspection is carried out, the status is displayed as information such as the remaining time until completion of inspection or the scheduled time for completion of inspection on a display terminal device such as a TV or a mobile phone, and leakage inspection is in progress This makes it possible to inform the user of the fact that the use of the instrument can be withheld, and troubles such as interruption of the inspection accompanying the use of the instrument can be reduced.

  A tenth aspect of the invention is characterized in that, when a leak check operation is performed and it is confirmed that there is a flow rate, the display terminal device displays that it is in a standby state to a no flow rate state.

  And when the leak check operation starts, when it is confirmed that there is a flow rate due to the use of appliances after going out of the house, it is in a standby state until the use of the appliances is stopped, and the situation is displayed on a display terminal device such as a TV or a mobile phone. By displaying it, it is possible to inform the customer that it is in the leakage inspection mode, it is possible to refrain from using the instrument, and it is possible to reduce troubles such as interruption of the inspection accompanying the use of the instrument .

  In an eleventh aspect of the present invention, when a sudden gas pressure change is confirmed during the execution of the leak check operation, the shutoff valve is returned to the open state to interrupt the leak check operation, and the display terminal device is in the interrupted state. It is characterized by being displayed on the screen.

  Then, when the gas pressure detected by the gas pressure detecting means suddenly changes in the decreasing direction during the leak test, it is determined that the gas appliance has been used, and the shutoff valve is returned to the open state to supply the gas. Start and interrupt the leak test to prioritize the use of gas appliances, and display the status on a display terminal device such as a TV or mobile phone to inform the consumer that the leak test was in progress Also, it is possible to minimize the use of the instrument, and troubles such as interruption of the inspection accompanying the use of the instrument can be reduced.

  In the twelfth aspect of the invention, when the leak test result is reported to the base station and the return permission command is received, the shutoff valve is returned to the open state to enable the gas supply operation, and the leak test result is normal with no problems. The return is displayed on the display terminal device.

  And when the leakage inspection is completed, the result is transmitted to the base station, and when there is no abnormality, the shutoff valve is returned to the open state based on the return permission command transmitted from the base station, and the gas supply is started. By displaying the situation on a display terminal device such as a television or a mobile phone, it is possible to notify the consumer that the inspection has been completed without any abnormality such as gas leakage.

In the thirteenth aspect, when the leak test result is reported to the base station and the return prohibition command is received, the shutoff valve is kept in a shut-off state to disable the gas supply operation, and the leak test result causes a problem and repairs. Is displayed on the display terminal device.

  Then, when the leak inspection is completed, the result is transmitted to the base station, and when there is an abnormality, the shutoff valve is kept closed based on the return prohibition command transmitted from the base station, and the gas supply is stopped. By displaying the situation on a display terminal device such as a TV or mobile phone, it is possible to notify the customer that the repair is necessary and that the gas supply will be stopped until the repair is completed. Troubles associated with can be reduced.

  In a fourteenth aspect of the invention, the display terminal device is a television or a mobile phone, and a wireless module having the same communication frequency band as that of the wireless module built in the gas cutoff device is built in or integrally attached thereto. .

  By providing a radio module having the same communication frequency band as the radio module built in the gas meter in the television or mobile phone, various display information transmitted from the gas meter can be displayed on the display unit of the television or mobile phone. The situation at that time can be transmitted to the customer in real time in response to the case where the user goes home from the outside, and troubles related to the leakage inspection can be reduced.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
1 is an overall configuration diagram of a communication mode with a gas meter in a gas cylinder supply path of Embodiment 1 of the present invention, FIG. 2 is a diagram showing a communication mode between a gas pressure regulator and a gas meter in the gas appliance monitoring device, FIG. Is a block diagram of the configuration of the gas pressure regulator in the gas appliance monitoring device, FIG. 4 is a diagram showing the appearance and components of the gas meter in the gas appliance monitoring device, FIG. 5 is an internal configuration diagram of the gas meter, and FIG. It is a block diagram of the configuration of the control circuit board.

  In FIG. 1, a gas pressure regulator unit 22 for adjusting a gas pressure and a gas meter 2 are arranged in the middle of a gas supply path 1 connected to a gas cylinder 20, and a plurality of pipes connected to piping after passing through the gas meter 2. The communication function possessed by the gas appliance and the gas meter 2 will be described.

  A gas meter 2 is installed at the inlet portion of the gas supply pipe 1 connected to the gas cylinder 20, and is branched from the gas pipe 3 after passing through the gas meter 2 to a place where various gas appliances used at home are installed. Gas is supplied. For example, a gas water heater 4 is installed outdoors, and hot water generated by the gas water heater 4 is installed in a kitchen hot water tap 5, a bath 6 in which a bathtub and a shower device are installed, a living room and the like through a water pipe. The floor heating 7 is supplied to form various usage forms.

  In addition, when indoors, gas is supplied to a gas table 8 installed in a kitchen, a gas fan heater 9 installed in a living room, a bedroom, or the like, and is used as needed.

  When the installed gas appliance is used and gas consumption occurs, the amount of use is measured by the gas meter 2, and the data is accumulated and stored every predetermined period. The data stored in the gas meter 2 is subjected to predetermined information processing based on a periodic data request command from the gas company 15, and then the gas fee, gas usage, discount service provided by the gas company 15, etc. Is transmitted to the consumer 13 and the gas business operator 15 as the information.

  As the transmission means, as shown in FIG. 4, a wireless module 11 integrated with a control circuit board 10 constituting a control device built in the gas meter 2 is used, and this wireless module 11 is connected by a connector 10d. A gas meter that is detachably mounted on the control circuit board 10 and that does not have the wireless module 11 and does not have a communication function and a gas meter that has the communication function that has the wireless module 11 can be arbitrarily selected. Therefore, it can be used regardless of the presence or absence of the communication function.

  In addition, since the wireless module 11 is detachable, even if it has a communication function, it is not necessary to acquire the standard as a communication device in the gas meter body if the wireless module that has acquired the communication standard is installed. In the case of changing the gas meter, etc., it can be changed relatively freely without being restricted.

  Then, as shown in FIG. 6, the wireless module 11 is different from the telephone line for communicating with the base station 14, for example, a wide-area communication wireless module 11 a having a communication frequency band of 200 MHz, a television 12 a in the customer's house 13, In order to communicate with a specific terminal device 12 such as a personal computer or a mobile phone 12b, or a gas pressure regulator unit 22 provided on the gas cylinder 20 side for adjusting the supply gas pressure, it has a specific low-power wireless communication frequency band such as 429 MHz, for example. The area communication wireless module 11b is configured to calculate gas usage based on flow rate signals and sensor signals, or data from the control circuit 10a that detects anomalies such as earthquakes and gas leaks, and further gas business via the base station 14. When receiving various information transmitted from the user 15, such as periodic gas leak inspection command information, Depending on the received data, for example, gas charges, gas usage or operation of gas shut-off valves due to occurrence of abnormalities such as earthquakes and gas leaks, and various processing according to gas leak inspection command information should be notified to consumers In the case of contents, the area communication wireless module 11b is used to transmit data to a specific terminal device 12 such as a television 12a or a mobile phone 12b in the customer's house 13, and when the gas leak inspection command information is transmitted, the information is transmitted. It transmits to the gas pressure regulator unit 22, and performs a predetermined | prescribed gas leak test process.

  Then, as shown in FIG. 7, the gas meter 2 is installed in a specific terminal device 12 by incorporating a radio module 11 c having the same communication frequency band as that of the area communication radio module 11 b built in the gas meter 2. Data can be received, and this data can be displayed on the screen of the television 12a or the mobile phone 12b, so that information can be transmitted directly to the consumer from the gas meter. It is necessary to adopt an information transmission method in which data is transmitted from the gas meter 2 to the gas company 15, and information processed by the gas company 15, such as postcards such as a charge notice, is sent to the customer by mail or the like. Therefore, the number of man-hours required for the notification work can be reduced, and postage costs such as postcards for notifications can be eliminated. It is intended to contribute to a reduction in gas rates to achieve the reduction.

  When various information is transmitted from the gas meter 2 to the specific terminal device 12, a notification completion signal is sent from the area communication wireless module 11b to the wide area communication wireless module 11a, and the wide area communication wireless module 11a sends the notification completion signal to the base station. 14 to notify the gas company 15 that the information transmission to the consumer has been completed. In this case, it is preferable that a response signal from a specific terminal device 12 is received and a notification completion signal is transmitted, information can be more reliably transmitted to a consumer, and a rational information transmission system can be provided. Can be built.

Further, as shown in FIG. 2, a cylinder-side radio module 11d having the same communication frequency band as that of the area communication radio module 11b built in the gas meter 2 is also built in or integrated with the gas pressure regulator unit 22. Thus, the gas meter 15 incorporates a gas leak test for the gas supply path including the pipe on the upstream side of the gas meter 2 based on the test command information for the gas leak test periodically performed by the gas company 15 transmitted from the base station 14. This can be done using the pressure sensor 2d.

  Next, the flow rate measurement processing means for measuring the gas flow rate built in the control circuit 10a, which is the basic function of the gas meter 2, performing predetermined processing and outputting it as flow rate information will be briefly described. As shown in FIG. 5, a gas inlet 2 a and a gas outlet 2 b are provided, and a shutoff valve 2 c that shuts off gas in the event of an abnormality and a pair of ultrasonic sensors 17 that measure the gas flow rate are provided in the gas flow path between them. A pressure sensor 2d for detecting the gas pressure is disposed on the downstream side.

  A control circuit board 10 equipped with a control circuit 10a for calculating a gas flow rate based on a signal from the ultrasonic sensor 17 is disposed so as to face the liquid crystal display 10e on the display unit 2e of the gas meter 2, and further, the control circuit 10a. A battery 2f for driving is stored. Further, a return button 2g is arranged as means for manually performing a return operation after the shutoff valve 2c is activated.

  Then, the flow rate measurement unit 17 and the control circuit 10a that measure the gas flow rate, for example, as shown in FIG. 9, arrange a pair of ultrasonic sensors in the gas flow path, and change the propagation time according to the flow rate flowing through the flow path. Some measure the flow rate by measuring. Hereinafter, the configuration will be described. A measurement control unit having a switching means that constitutes a control circuit 10a, in which a first transmitter / receiver 17A for transmitting or receiving ultrasonic waves and a second transmitter / receiver 17B for receiving or transmitting ultrasonic waves are arranged in the flow direction. Switching between transmission and reception is possible by 18 and the flow state of fluid such as gas is detected. The flow rate is measured by processing the signals of the first transmitter / receiver 17A and the second transmitter / receiver 17B. Specifically, the first transmitter / receiver 17A is first driven by the measurement control unit 18 and the second transmitter / receiver 17B is then driven. The ultrasonic wave is transmitted toward the upstream, that is, from the upstream to the downstream. Then, the signal received by the second transmitter / receiver 17B is amplified by the amplifying means provided in the measurement control unit 18, the amplified signal is compared with the reference signal, and after the signal equal to or higher than the reference signal is detected, the measurement control unit The above-described transmission / reception is repeated a predetermined number of times by the repeating means provided at 18, and each time value is measured by a time measuring means such as a timer counter provided at the measurement control unit 18.

  Next, transmission / reception of the first transmitter / receiver 17A and the second transmitter / receiver 17B is switched by the measurement control unit 18 having switching means, and the ultrasonic waves are transmitted from the second transmitter / receiver 17B to the first transmitter / receiver 17A, that is, from downstream to upstream. A signal is transmitted, this transmission is repeated as described above, and each time value is measured. Then, the flow rate value is obtained by the signal processing unit 19 in consideration of the size of the flow path 16 and the flow state of the fluid from the ultrasonic propagation time difference between the first transceiver 17A and the second transceiver 17B. The obtained flow rate data is accumulated in the information storage means 10b and stored as accumulated data for each predetermined period.

  Further, the flow path 16 in which the flow rate measuring unit 17 is disposed is provided with a shutoff valve 2c that shuts off the gas flow in the event of an abnormality or the like. When the flow rate value is detected beyond a certain usage time, it is determined that there is an abnormality, and the shutoff valve 2c is operated to shut off the gas flow path 16.

  Further, when an earthquake or shock signal is input from the seismic sensing device 21 or an abnormal gas pressure signal is input from the pressure sensor 2d, the shutoff valve 2c is operated via the control circuit 10a to shut off the gas flow path 16, and Report to the center.

Next, an example of information transmission using the wireless module 11 built in the gas meter 2 will be described. First, a meter reading instruction from the gas operator 15 is transmitted in the wide communication frequency band (for example, 200 MHz) via the base station 14. In this case, the wide-area communication wireless module 11a built in the gas meter 2 receives and the meter reading instruction information is sent to the control circuit 10a mounted on the same substrate. In the control circuit 10a, the flow rate data measured by the flow rate measuring means is accumulated every predetermined period, and the accumulated data or information converted into charge data is stored in the information storage means 10b. When the meter reading instruction information is input, the control circuit 10a sends the flow rate accumulated data in the information storage means 10b or the information converted into the charge data to the area communication wireless module 11b and the wide area communication wireless module 11a via the communication switching means 10c. The wide area communication wireless module 11a transmits to the base station 14 in a wide area communication frequency band (for example, 200 MHz), and meter reading information is transmitted from the base station 14 to the gas company 15 using a dedicated line. Further, the area communication wireless module 11b transmits to the wireless module 11c integrally attached to the specific terminal device 12 such as the television 12a in a specific low power wireless communication frequency band (for example, 429 MHz), and displays, for example, FIG. Charge information and usage as shown in (a) are displayed. Then, when transmission to the specific terminal device 12 is completed, as described above, a notification completion signal is transmitted to the gas company 15 to notify that information transmission to the consumer is completed.

  Further, when the shut-off valve 2c is operated due to an earthquake or impact, the cause is investigated, and when a return instruction from the gas operator 15 is transmitted via the base station 14 in a wide communication frequency band (for example, 200 MHz), The wide area communication wireless module 11a built in the gas meter 2 receives the information, and the return instruction information is sent to the control circuit 10a mounted on the same substrate. When the return instruction information is input, the control circuit 10a sends information related to the return work stored in the information storage means 10b to the area communication wireless module 11b via the communication switching means 10c, and the area communication wireless module 11b 8 is transmitted to the wireless module 11c integrally attached to the display terminal device 12 such as the television 12a in the power wireless communication frequency band (for example, 429 MHz), and the procedure of the restoration work as shown in FIG. Is displayed. Then, when the transmission to the display terminal device 12 is completed, as described above, a notification completion signal is transmitted to the gas company 15 to notify the completion of information transmission to the consumer.

  As described above, the control circuit 10a has the communication switching means 10c to select the radio module having a different communication frequency band corresponding to the other party to communicate according to the information to be transmitted. 15, it is necessary to transmit the information stored in the information storage means 10b to the gas operator 15 and the specific terminal device 12 based on the information received by the wide area communication wireless module 11a. When the wide area communication wireless module 11a having the communication frequency band and the area communication wireless module 11b having the specific low power wireless communication frequency band of 429 MHz, for example, are selected and the return instruction from the gas company 15 is given, the display terminal device 12 It is only necessary to transmit the storage information of the information storage means 10b. In this case, for example, a specific low power wireless communication of 429 MHz It may be selected area communication wireless module 11b having a waveband.

  Note that the wide area communication radio module 11a and the area communication radio module 11b may be provided separately, or may be configured as a common radio module, and the communication frequency band may be switched between the wide area communication frequency band and the specific low power radio communication frequency band. However, in the former case, the communication switching means 10c needs to select the wide area communication wireless module 11a and the area communication wireless module 11b, and there is a merit that simultaneous communication is possible, but there are demerits such as a large installation space and high cost. is doing. In the latter case, the communication switching means 10c needs to switch the communication frequency band according to the communication partner, and has the demerit that the simultaneous communication cannot be performed and the alternate communication is possible while having the advantages of small installation space and low cost. ing.

  Next, in the gas meter having the communication function as described above, the gas leakage inspection of the gas supply path including the pipe on the upstream side of the gas meter 2 based on the gas leakage inspection command information transmitted from the base station 14 will be specifically described. .

As shown in FIG. 2, the supply gas such as LP gas supplied from the gas cylinder 20 is adjusted to a predetermined gas pressure by a gas pressure regulator unit 22 provided on the cylinder outlet side, and specifically comprises a diaphragm or the like. The gas pressure regulator 22a adjusts the gas pressure to a predetermined value, and the cylinder side shut-off valve 22c.
To the upstream gas supply path 1 of the meter 2. Further, in the gas pressure regulator unit 22, a cylinder side radio module 11d having the same communication frequency band as that of the area communication radio module 11b built in the gas meter 2 is integrally incorporated in the cylinder side control circuit 22b. The wireless module 11d can transmit various information to and from the gas meter 2.

  The cylinder-side control circuit 22b is provided with a driving battery 22d, and has a controller 22e that opens and closes the cylinder-side shut-off valve 22c based on a command from the gas meter 2 received by the cylinder-side wireless module 11d. The cylinder-side shutoff valve 22c has an automatic opening / closing function so that the upstream gas supply path 1 is shut off by a shutoff signal from the control unit 22e and is opened by a return signal.

  By disposing such a gas regulator unit 22 in the upstream gas supply path 1 at the cylinder side outlet, the wide area communication wireless module 11a built in the gas meter 2 receives the gas leakage inspection command information transmitted from the base station 14. Then, when the gas meter 2 detects the presence or absence of the flow rate and detects “no flow rate”, an inspection start signal is transmitted to the gas regulator unit 22 using the area communication wireless module 11b.

  When the cylinder-side wireless module 11d receives this inspection start signal, a cutoff signal is output from the control unit 22e, the cylinder-side cutoff valve 22c is activated, and the upstream-side gas supply path 1 is held in the cutoff state, and the cylinder-side cutoff valve 22c. The subsequent gas paths 1 and 3 are set in a sealed state, a pressure change is monitored by a pressure sensor 2d built in the gas meter 2, and a gas leakage inspection in the gas paths 1 and 3 is executed.

  This gas leakage inspection will be described in detail with reference to FIG.

  The base station 14 transmits information such as a periodic leakage inspection command signal, a leakage inspection release signal, and a leakage inspection prohibition signal from the gas company 15.

  First, when a leakage inspection command signal is transmitted, the wide-area communication wireless module 11a built in the gas meter 2 receives it, and the appliance use determining means 23 uses the appliance usage based on the flow rate information detected by the flow rate measuring means 17 of the gas meter 2. Determine the presence or absence.

  When the “use is used” is determined by the appliance use determining means 23, the standby mode is set until the “not used” state is determined, and the shift to the leakage inspection mode is stopped.

  When “no use” is determined by the appliance use determining means 23, the mode shifts to the leakage inspection mode, and the area communication wireless module 11b transmits an inspection start signal.

  When the gas pressure regulator unit 22 receives a signal from the gas meter 2 by the cylinder-side radio module 11d, the leakage inspection signal discriminating means 24 determines whether or not it is an inspection start signal. A shut-off signal is sent from the output means 25 to the cylinder-side shut-off valve drive circuit 26, and the cylinder-side shut-off valve 22c is operated so that the upstream gas supply path 1 is shut off.

  The gas pressure in the gas passages 1 and 3 that are sealed by the cylinder-side shutoff valve 22c being shut off is detected by the gas pressure detecting means 2d of the gas meter 2, and the change state is monitored by the gas leakage monitoring means 27.

In this progress monitoring, the gas leak determination means 28 determines that a gas leak has occurred in the gas paths 1 and 3 when the gas pressure change has decreased by a predetermined value or more. When the change in gas pressure is equal to or less than a predetermined value, it is determined that there is no gas leakage.

  The inspection result in the above leakage inspection mode is transmitted to the base station 14 using the wide area communication wireless module 11a, and the gas company 15 receiving the result cancels the leakage inspection through the base station 14 when there is no gas leakage. The wide-area communication wireless module 11a that has transmitted the signal transmits the signal to the cylinder-side wireless module 11d using the area communication wireless module 11b, and the leakage inspection signal determination unit 24 determines that the signal is a release signal. Then, a reset signal is sent from the release signal output means 29 to the cylinder-side shutoff valve drive circuit 26, and the cylinder-side shutoff valve 22c is actuated to open the upstream gas supply path 1.

  If there is a gas leak in the leakage inspection result, a leakage inspection prohibition signal is transmitted via the base station 14, and the wide area communication wireless module 11a that has received this signal uses the area communication wireless module 11b to transmit the cylinder side wireless module. 11d, when the leakage inspection signal discriminating means 24 discriminates that it is a prohibition signal, the prohibition signal output means 30 sends a prohibition signal to the cylinder-side shut-off valve drive circuit 26, and the cylinder-side shut-off valve 22c is turned on. Operates to keep the upstream gas supply path 1 in a shut-off state.

  The above is the first leak confirmation mode in which the gas side inspection valve 22c is operated to close the gas passages 1 and 3 and perform the gas leak inspection.

  When a gas leak is detected in this first leak check mode, it is common for the gas company 15 to be dispatched to check the cause of the gas leak and investigate the cause, and take appropriate measures. In this form, when a gas leak is further detected in the first leak check mode, the second leak check for specifying whether the gas leak point is the upstream gas supply path 1 or the downstream gas supply path 3 It has a mode.

  In the second leakage confirmation mode, when the result of the inspection in the first leakage confirmation mode is “leakage”, the base station 14 again transmits a leakage inspection command signal for the second leakage confirmation mode, The received wide area communication wireless module 11a determines whether or not the appliance is being used by the appliance usage determining means 24. When it is determined that the appliance is not being used, the cutoff signal output means 31 provided in the control circuit 10a of the gas meter 2 shuts off the gas. A shutoff signal is sent to the valve drive circuit 32, and the gas shutoff valve 2c is actuated to put the downstream gas supply path 3 in a shutoff state.

  The gas pressure in the gas path 3 that has been sealed due to the shutoff of the gas shutoff valve 2c is detected by the gas pressure detecting means 2d of the gas meter 2, and the change state is monitored by the gas leakage monitoring means 27.

  In this progress monitoring, the gas leak determination means 28 determines that a gas leak has occurred in the gas path 3 when the gas pressure change has decreased by a predetermined value or more. When the change in gas pressure is equal to or less than a predetermined value, it is determined that there is no gas leakage.

  The inspection result in the second leakage confirmation mode is also transmitted to the gas operator 15 via the base station 14 by the wide area communication wireless module 11a as in the first leakage confirmation mode.

  When it is determined that there is no leakage in the inspection result of the second leakage confirmation mode, it can be determined that there is a gas leakage point in the upstream gas supply path 1, and when it is determined that there is a leakage. It can be determined that there is a gas leak location in the downstream gas supply path 3.

Thus, by having the first leakage confirmation mode and the second leakage confirmation mode, it is possible to perform a leakage inspection in the entire gas supply path and a leakage inspection in the gas supply path downstream from the gas meter. The gas leak inspection can be selected according to the conditions.

  In the present embodiment, when the leakage confirmation operation is started, the progress information is displayed on the display terminal device 12 such as the television 12a or the mobile phone 12b using the area communication wireless module 11b built in the gas meter 2. For example, as shown in FIG. 10 (b), the remaining time is visually displayed along with the messages “Gas leak inspection is in progress” and “It will be completed in XX minutes”. You can be informed that you are inspecting for leaks. Note that the display form of the progress information is not limited to the above, and the scheduled completion time may be displayed, or only that the examination is being performed may be displayed.

  In addition, when the leakage confirmation operation is performed and it is confirmed that there is a flow rate, it may be displayed on the display terminal device 12 that it is in a standby state to a state without a flow rate. This makes it possible to ask the customer to refrain from using the appliance, and to suppress troubles such as interruption of the inspection accompanying the appliance usage.

  Further, when the pressure sensor 2d detects a sudden pressure change in the decreasing direction during the leak check operation, it is determined that the instrument plug is opened and the use is in a starting state, and the cylinder side shutoff valve 22c or the gas shutoff valve 2c is used. Is opened and the gas supply operation is started, and the leak check operation is temporarily interrupted. At this time, the fact that the leakage check operation has been temporarily stopped is displayed on the screen of the display terminal device 12, thereby notifying the customer that the inspection is being performed and minimizing the use of the appliance. This makes it possible to prevent troubles such as interruption of the inspection associated with the use of the instrument.

  Then, the leakage inspection result is transmitted to the base station 14 using the wide area communication wireless module 11a. When the gas company 15 determines that there is no abnormality from the leakage inspection result, the return permission instruction is transmitted, and the wide area communication wireless When the module 11a receives this command, the control circuits 10a and 22b return the cylinder-side shutoff valve 22c and the gas shutoff valve 2c to the open state and start supplying gas, and the communication switching means 10c causes the area communication radio module 11b to start. As shown in FIG. 10 (a), an inspection completion signal is sent to the display terminal device 12 such as the television 12a to display on the screen that the inspection is completed and that there is no abnormality.

  When it is determined that there is an abnormality in the inspection result, a return prohibition command is transmitted. When the wide area communication wireless module 11a receives this command, the control circuits 10a and 22b control the cylinder-side cutoff valve 22c and the gas cutoff valve 2c. Is closed and the gas supply is stopped, and the communication switching means 10c sends an inspection abnormality signal to the display terminal device 12 such as the television 12a using the area communication wireless module 11b, and gas leaks on the screen. It is displayed that it has been confirmed, that repair is necessary, or that gas cannot be supplied.

  As described above, according to the present embodiment, between the wireless module 11a capable of communicating with the base station using wireless communication means other than the telephone line and the gas pressure regulator unit 22 provided on the gas cylinder 20 side. Since the wireless module 11b capable of transmitting and receiving leakage inspection information is integrated into the control circuit 10a board having the measurement function and the shut-off function in the gas meter 2, the base station is simply installed by installing the gas meter 2. Communication with the station 14 without using a telephone line is possible, communication with the base station can be performed smoothly without being affected by the congestion of the line, and various instrument information acquired by the gas meter 2 can be quickly transmitted to the base station 14. It is possible to accurately and accurately perform various processes based on instructions from the base station 14.

Further, when a leak check command is transmitted from the base station 14, a predetermined confirmation process is performed. First, the cylinder side shut-off valve 22 c in the gas pressure regulator unit 22 is closed, and the gas including the gas supply path upstream of the gas meter 2 is included. When a gas leak inspection in the flow channel is performed and it is determined that there is “leakage” in the inspection result, the gas shut-off valve 2c in the gas meter 2 is closed and a gas leak test in the gas flow channel on the downstream side of the gas meter 2 is performed. Since it is carried out, it is possible to specify whether the gas leak location is upstream or downstream of the gas meter when gas leak occurs, and prompt treatment is possible.

  Further, when it is determined whether or not leakage inspection is possible by simply transmitting a leakage inspection command from the base station 14, a cylinder-side cutoff valve built into the gas pressure regulator unit 22 is determined. 22c is operated, the cylinder side gas supply path 1 is shut off, and the leak inspection upstream of the gas meter 2 can be automatically performed, so that it is not necessary for the gas company to go to the customer's house and perform the inspection. Can be saved.

  In the first leak check mode, after the leak check command from the base station 14 is received by the wide-area communication wireless module 11a, the leak check mode is entered and the flow rate information from the flow rate measuring means 17 detects the state of no flow. When this is done, a signal for starting a leak test is transmitted to the cylinder-side radio module 11d integrally attached to the gas pressure regulator 22 provided on the gas cylinder 20 side using a specific low-power radio communication frequency band. In response, the cylinder side shut-off valve 22c integrally attached to the gas pressure regulator 22 is closed, and the change state of the gas pressure is confirmed by the pressure detection means 2d built in the gas meter 2, and the change of the gas pressure within a predetermined period is confirmed. Whether or not there is a leak is determined, and a leak inspection including a flow path upstream from the gas meter is performed.

  In the second leak check mode, after the leak check command from the base station 14 is received by the wide area communication wireless module 11a, the leak check mode is entered, and the flow rate information from the flow rate measuring means 17 detects the state of no flow rate. When this is done, the gas shutoff valve 2c built in the gas meter 2 is closed, the gas pressure change state is confirmed by the pressure detection means 2d built in the gas meter 2, and the presence or absence of leakage is determined from the gas pressure change within a predetermined period. Leakage inspection of the flow path downstream from the gas meter is performed.

  In addition, when the leak check mode is entered, if the flow rate measuring means 17 confirms that there is a flow rate, it is determined that the instrument is in use, and the leak check is performed as a leak check standby mode until a no flow rate is confirmed. The base station 14 conducts a leak test performed when the gas company 15 carries out a regular leak test or a leak report. By simply sending a leak test command to the gas meter 2, it has a self-check function that acquires, determines, and executes a test to determine the situation in which the gas meter itself can be inspected. It can contribute greatly.

  According to the gas appliance monitoring apparatus of the present invention, a gas meter having a gas flow rate and pressure measurement function and a cutoff function incorporates a wireless module that transmits and receives leakage inspection information to and from a gas pressure regulator, and a leakage inspection command Is used to block the flow path on the cylinder side and to detect gas leaks upstream from the gas meter using the pressure measurement function built into the gas meter. Can be applied.

Overall configuration diagram of communication form with a gas meter in the gas cylinder supply path of Embodiment 1 of the present invention The figure which shows the communication form of the gas pressure regulator and gas meter in the gas appliance monitoring apparatus Configuration block diagram of gas meter and gas pressure regulator in the gas appliance monitoring device The figure which shows the external appearance and component of a gas meter in the gas appliance monitoring apparatus Internal configuration of the gas meter Configuration block diagram of the control circuit board of the gas meter The figure which shows the communication form of the same gas appliance monitoring apparatus and a specific terminal device (A) The figure which shows the charge information display form in the same specific terminal device (b) The figure which shows the return information display form in the same specific terminal device Configuration block diagram of control circuit of gas appliance monitoring device (A) The figure which shows the leakage inspection information display form in the display terminal device (b) The figure which shows another leakage inspection information display form in the display terminal device

Explanation of symbols

2 Gas meter 2c Gas shut-off valve 2d Pressure sensor (pressure detection means)
DESCRIPTION OF SYMBOLS 10a Control circuit 10b Information storage means 10c Communication switching means 11 Wireless module 11a Wide area communication wireless module 11b Area communication wireless module 11d Cylinder side wireless module 12 Specific terminal device 12a Television 12b Mobile phone 14 Base station 15 Gas company 17 Flow rate measuring means 22 Gas pressure regulator unit 22a Gas pressure regulator 22b Cylinder side control circuit 22c Cylinder side shutoff valve 23 Instrument use discrimination means 27 Gas leak monitoring means 28 Gas leak judgment means

Claims (14)

A gas pressure regulator unit for adjusting the gas pressure and a gas meter are arranged in the middle of the gas supply path connected to the gas cylinder, and the usage status of a plurality of gas appliances connected to the pipe after passing through the gas meter is monitored. A gas appliance monitoring device equipped with a wireless module capable of direct transmission / reception using a communication line other than a telephone line with a plurality of counterparts,
The gas meter includes a flow rate measuring unit that measures a gas flow rate, a gas shut-off valve that shuts off the gas flow path in the event of an abnormality, a control circuit that performs predetermined processing based on the measurement result of the flow rate measuring unit and outputs the flow rate information. A pressure detecting means for detecting the pressure in the gas flow path; a leak judging means for judging a gas leak state from an output of the pressure detecting means; a meter wireless module for transmitting / receiving information to / from a plurality of counterparts; Communication switching means for switching the communication frequency band according to the drive battery power supply,
The meter radio module is configured integrally with the control circuit and housed in the gas meter, and has at least a communication frequency band with a base station and a communication frequency band with a gas pressure regulator unit,
The gas pressure regulator unit includes a gas pressure adjusting means for adjusting to a predetermined gas pressure, a cylinder side shut-off valve for blocking a gas supply path, a cylinder side wireless module capable of transmitting and receiving in a predetermined communication frequency band, Battery power supply for driving,
The control circuit has an instrument use confirmation unit that determines whether or not the instrument is used based on flow rate information of the flow rate measurement unit, and receives the leakage inspection command transmitted from the base station, the instrument use confirmation unit When it is determined that the instrument is not being used, the first leak check mode in which the cylinder side shut-off valve in the gas pressure regulator unit is closed and the leak check operation is performed, and the gas shut-off valve in the gas meter is closed. A gas appliance monitoring apparatus having a second leak check mode for performing a leak check operation, wherein the second leak check mode is executed when it is determined that “leak is present” in the first leak check mode. The meter wireless module communicates using a communication frequency band different from the wireless module for communication with the base station and the wireless module for communication with the gas pressure regulator unit,
The wireless module for communication with the gas pressure regulator unit is an area communication wireless module having a specific low power wireless communication frequency band, and the wireless module for communication with a base station is a wide area communication wireless module having a wide communication frequency band. The gas appliance monitoring apparatus according to 1. In the first leakage confirmation mode, the presence or absence of flow rate information from the flow rate measuring means is confirmed by a leakage inspection command from the base station, and when there is no flow rate, a cutoff command for the cylinder side shut-off valve is transmitted to the cylinder side radio module, Close the side shut-off valve and check the leakage state based on whether or not the gas pressure change detected by the pressure detection means is within the specified range. If there is a flow, wait until the state without the flow is confirmed. The gas appliance monitoring device according to claim 1 or 2. In the second leak check mode, the presence or absence of flow rate information from the flow rate measuring means is confirmed by a leak inspection command from the base station, and when there is no flow rate, the gas shutoff valve in the gas meter is closed and the gas detected by the pressure detection means The gas appliance monitoring apparatus according to claim 1 or 2, wherein a leakage state is confirmed based on whether or not the pressure change is within a predetermined range, and when there is a flow rate, the gas appliance monitoring device is in a standby state until a state without a flow rate is confirmed. 5. The leak check operation is interrupted by returning the cylinder-side shut-off valve or the gas shut-off valve to an open state when a sudden gas pressure change is confirmed during the leak check operation. Gas appliance monitoring device. When the leak test result is reported to the base station by the wide area communication wireless module and the return permission command is received, the area communication wireless module transmits the result to the cylinder side wireless module, and the cylinder side shut-off valve is returned to the open state to perform the gas supply operation. The gas appliance monitoring device according to claim 2, which enables the gas appliance monitoring device. When the leak inspection result is reported to the base station by the wide-area communication wireless module and the return prohibition command is received, the area communication wireless module transmits the result to the cylinder-side wireless module, and keeps the cylinder-side shut-off valve in the shut-off state and performs the gas supply operation. The gas appliance monitoring device according to claim 2 , which is disabled. The area communication wireless module enables communication with a specific terminal device in addition to communication with the gas pressure regulator unit, and transmits the leakage confirmation information to the specific terminal device when it is transmitted . The gas appliance monitoring device according to any one of claims 6 and 7. The gas appliance monitoring device according to any one of claims 1 to 8, wherein when the leakage confirmation operation is performed, the progress information is displayed on the display terminal device with a remaining time or a scheduled completion time. The gas appliance monitoring device according to any one of claims 1 to 9, wherein when a leakage confirmation operation is performed and it is confirmed that there is a flow rate, the display terminal device displays a standby state for a no flow rate state. . When a sudden gas pressure change is confirmed during the leak check operation, the cylinder side shut-off valve or gas shut-off valve is returned to the open state to interrupt the leak check operation and to indicate that it is in the interrupted state. The gas appliance monitoring device according to any one of claims 1 to 10, wherein the gas appliance monitoring device is displayed. When the leak inspection result is reported to the base station and the return permission command is received, the cylinder side shut-off valve or gas shut-off valve is returned to the open state to enable the gas supply operation, and the leak check result is normal and there is no problem. The gas appliance monitoring device according to any one of claims 1 to 11, wherein the return is displayed on a display terminal device. When the leak test result is reported to the base station and a return prohibition command is received, the cylinder side shut-off valve or gas shut-off valve is held in a shut-off state to disable the gas supply operation, and a problem occurs in the leak test result and repair is performed. The gas appliance monitoring device according to any one of claims 1 to 12, wherein a display terminal device displays that the information is necessary. The gas appliance according to any one of claims 9 to 13, wherein the display terminal device is a television or a mobile phone, and a radio module having the same communication frequency band as the radio module built in the gas cutoff device is built in or integrally attached thereto. Monitoring device.