JP2008175707A - Gas shut-off device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gas shut-off device capable of performing update of a prepaid rate or a contract period by wireless communication between a gas meter and a mobile terminal device. <P>SOLUTION: This gas shut-off device comprises a flowrate measurement means 17 for measuring a gas flowrate, a gas shut-off valve 2c for automatically shutting off or opening a gas flow path, an information memory means 10b for storing various kinds of information of the measurement results by the flowrate measurement means 17, a wireless communication module 11 for communicating information with a plurality of opposite parties, a communication switching means 10c for switching a communication frequency band depending on the opposite party, an individual identification means 27 for identifying the opposite party from the received information and permitting the communication when it is matched with an identification code stored beforehand, an update judgment means 29 for judging update of the prepaid rate or the contract period from the received information after the permission of the communication by the individual identification means 27, and a shut-off valve control means 25 for controlling the gas shut-off valve 2c from the judgment result by the update judgment means 29. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a gas shut-off device that performs gas supply management by a prepaid system or a contract system by period, and in particular, renews a prepaid or contract period by a personal identification means such as a portable terminal device using a wireless module built in a gas meter. The present invention relates to update processing means for performing

  Conventionally, as this kind of gas shut-off device, the gas meter bidirectional valve is opened only when a predetermined amount is paid in advance by the customer, and then the amount of gas used reaches the usable gas amount according to the amount By automatically closing the two-way valve, a certain amount of money is paid from the customer at the automatic meter reading center for the purpose of reliably collecting gas charges and preventing unnecessary gas supply (prepaid) When the operation is performed, the gas meter is notified of the amount of usable gas according to the fact and the payment amount. In the gas meter, the usable gas amount corresponding to the paid amount is preset in the memory, and the gas supply is started by opening the bidirectional valve. Thereafter, the gas meter calculates the amount of gas used (integrated value), and when the amount becomes equal to the usable gas amount preset in the memory, the bidirectional valve is closed and the gas supply is stopped. In addition, there has been proposed a method in which a preset value in a memory is updated when notification of additional payment is made from the automatic meter reading center on the way (see, for example, Patent Document 1).

Further, if an IC card in which the frequency corresponding to the amount of money is written is purchased and the IC card is inserted into an IC card insertion device installed in a home kitchen or the like, gas can be used. Further, when the gas corresponding to the frequency is used and the gas flow rate is cut off, the gas can be used again by inserting a new IC card into the IC card insertion device. Thus, a prepaid gas meter has been proposed in which gas can be used for the number of times written in advance on the IC card (see, for example, Patent Document 2).
JP-A-8-5398 Japanese Patent Laid-Open No. 9-180053

  However, in the conventional prepaid methods disclosed in Patent Documents 1 and 2 above, it is necessary for a consumer to go to a bank or the like to transfer a predetermined amount each time in order to carry out a prepayment process for charges. Or, in order to purchase an IC card, it is a system that imposes a heavy burden on pre-processing for the consumer, that is, the user has to visit a place designated by the gas company.

  In addition, if you forget to renew the prepaid fee and forcibly stop supplying gas, the above pre-processing is necessary to recover, and it may be impossible to transfer the prepaid fee depending on the time of day. The system could not be used, and the system was inconvenient for usability.

The present invention solves the above-described problem, and enables automatic meter reading in accordance with a meter reading request instruction from the center by simply installing a gas meter without using a telephone line, and executes prepaid processing based on the meter reading information. However, if it is expected that the prepaid fee will be exceeded, it will be possible to perform a renewal process with a gas meter using a pre-registered mobile terminal, so that a prepaid fee can be paid or an IC card can be purchased in advance. It is an object of the present invention to provide a gas shut-off device that can reduce the burden on consumers due to processing and can easily perform return processing when an inadvertent gas supply is stopped.

  In order to solve the above-described conventional problems, the gas shutoff device of the present invention monitors the usage status of a plurality of gas appliances connected to the pipe after passing through a gas meter, and communicates with a plurality of destinations other than telephone lines. A gas shut-off device that is equipped with a wireless module capable of direct transmission / reception using a line and performs gas supply management by a prepaid method or a contract method by period, and the gas meter includes a flow rate measuring means for measuring a gas flow rate, A gas shut-off valve for automatically shutting off and returning the gas flow path, an information storage means for storing various information based on the measurement result of the flow rate measuring means, a wireless module for transmitting / receiving information to / from a plurality of counterparts, and a counterpart A communication switching means for switching the communication frequency band in accordance with the personal identification means for recognizing the other party from the received information and permitting communication when it matches the pre-stored recognition code, Update discriminating means for judging update of prepaid or contract period from received information after communication permission by the discriminating means, and shut-off valve control means for controlling the gas shut-off valve based on the discrimination result of the update discriminating means, The module is integrated with the control circuit constituting the flow rate measuring means and housed in the gas meter, and has at least a communication frequency band with the base station and a communication frequency band with a personal identification means for transmitting a personal identification code. Is.

  According to the above invention, the shutoff valve control means for performing gas supply and stop by the prepaid function or the contract function by period is provided, the gas supply is executed within a predetermined prepaid charge or the contract period, and the prepaid charge is calculated. When an excess situation is expected or before the end of the contract period, a signal notifying that the gas meter needs to be updated is transmitted. When the update process is executed with this notification signal, a predetermined signal is transmitted to the gas meter using personal identification means constituted by a pre-registered mobile terminal or the like, and the recognition code included in the transmission signal is the personal code of the gas meter. It is checked whether or not it matches the recognition code stored in advance in the recognition means, and if it matches, it is determined that the transmission is from the holder of the update right and the subsequent update processing is permitted.

  Then, a confirmation signal as to whether or not to update is transmitted again from the gas meter update determination means, and a response signal from the personal identification means is awaited. When a signal for updating is sent from the personal identification means, the prepaid fee is updated or the contract period is updated, and the gas supply is continued through the shutoff valve control means. In addition, if a signal that is not updated is sent from the personal identification means, or if there is no response signal, the gas supply is stopped via the shut-off valve control means when the prepaid fee is exceeded or when the contract period ends. To do.

  In this way, in the gas shut-off device that performs gas supply management within a predetermined prepaid fee or contract period, a portable terminal that is pre-registered using a wireless module that incorporates a prepaid charge or contract period update process in the gas meter By performing wireless communication with the apparatus, the burden on the consumer is reduced and the update process is simplified.

  In addition, the gas meter can communicate with a specific terminal device using a wireless module capable of communicating with a base station using wireless communication means other than a telephone line and a wireless communication means such as a specific low-power radio. Since the wireless module is integrated with the flow measurement control circuit board in the gas meter, it is possible to communicate with the base station without using a telephone line simply by installing the gas meter. Information such as a meter reading request command from the base station and an error recovery command can be smoothly transmitted without being affected, and meter reading data based on commands from the base station and information when an abnormality occurs can be smoothly transmitted from the gas meter. It is not necessary for the meter reader to go to the customer's house to perform meter reading as in the past, and it is possible to report to the center due to congestion of the line when there is an abnormality such as gas leak It is possible to solve a problem that does not come.

  The gas shut-off device of the present invention can communicate with the base station without using a telephone line simply by installing a gas meter, and is not affected by the congestion status of the line, such as a meter reading request instruction or an abnormal return instruction from the base station. In a gas shut-off device that can transmit information smoothly and manages gas supply within a predetermined prepaid fee or contract period, a wireless meter with built-in prepaid charge or contract period update processing It can be performed by wireless communication with a mobile terminal device registered in advance using a module, and can reduce the burden on consumers due to pre-processing such as prepaid fee payment processing or IC card purchase, and The update process can be simplified.

  The first invention is a wireless module capable of monitoring the use status of a plurality of gas appliances connected to piping after passing through a gas meter and directly transmitting / receiving with a plurality of destinations using a communication line other than a telephone line. Is a gas shut-off device that performs gas supply management by a prepaid method or a contract method by period, and the gas meter has a flow rate measuring means for measuring the gas flow rate and automatically shuts off and returns the gas flow path. Gas switching valve, information storage means for storing various information based on the measurement result of the flow rate measuring means, a wireless module for transmitting / receiving information to / from a plurality of destinations, and communication switching for switching a communication frequency band according to the destinations Means for recognizing the other party from the received information, and a personal recognition means for permitting communication when it matches a pre-stored recognition code, and received information after communication permission by the personal recognition means. Update discriminating means for judging prepaid renewal or contract period updating, and shut-off valve control means for controlling the gas shut-off valve based on the judgment result of the update discriminating means, wherein the wireless module comprises the flow rate measurement A control circuit constituting the means is integrated with and stored in the gas meter and has at least a communication frequency band with a base station and a communication frequency band with a personal identification means for transmitting a personal identification code. To do.

  In addition, there is a shutoff valve control means for performing gas supply and stop by a prepaid function or a contract function by period, and there is a situation in which gas supply is executed within a predetermined prepaid charge or contract period and the prepaid charge is exceeded. When expected or before the end of the contract period, the gas meter sends a signal notifying that renewal is necessary. When the update process is executed with this notification signal, a predetermined signal is transmitted to the gas meter using personal identification means constituted by a pre-registered mobile terminal or the like, and the recognition code included in the transmission signal is the personal code of the gas meter. It is checked whether or not it matches the recognition code stored in advance in the recognition means, and if it matches, it is determined that the transmission is from the holder of the update right and the subsequent update processing is permitted.

  Then, a confirmation signal as to whether or not to update is transmitted again from the gas meter update determination means, and a response signal from the personal identification means is awaited. When a signal for updating is sent from the personal identification means, the prepaid fee is updated or the contract period is updated, and the gas supply is continued through the shutoff valve control means. In addition, if a signal that is not updated is sent from the personal identification means, or if there is no response signal, the gas supply is stopped via the shut-off valve control means when the prepaid fee is exceeded or when the contract period ends. To do.

  In this way, in the gas shut-off device that performs gas supply management within a predetermined prepaid fee or contract period, a portable terminal that is pre-registered using a wireless module that incorporates a prepaid charge or contract period update process in the gas meter By performing wireless communication with the apparatus, the burden on the consumer is reduced and the update process is simplified.

In addition, the gas meter can communicate with a specific terminal device using a wireless module capable of communicating with a base station using wireless communication means other than a telephone line and a wireless communication means such as a specific low-power radio. Since the wireless module is integrated with the flow measurement control circuit board in the gas meter, it is possible to communicate with the base station without using a telephone line simply by installing the gas meter. Information such as a meter reading request command from the base station and an error recovery command can be smoothly transmitted without being affected, and meter reading data based on commands from the base station and information when an abnormality occurs can be smoothly transmitted from the gas meter. It is not necessary for the meter reader to go to the customer's house to perform meter reading as in the past, and it is possible to report to the center due to congestion of the line when there is an abnormality such as gas leak It is possible to solve a problem that does not come.

  In the second invention, the update determination means enables the gas supply within a predetermined amount of advance payment or within the contract period, and when it is expected to exceed the range or before the contract for the gas supply period ends. In addition, an update confirmation signal is transmitted using a wireless module built in the gas meter, and gas supply management is performed according to the presence or absence of a response signal corresponding to the update confirmation signal.

  And when the gas usage fee can be expected to exceed the range of the prepaid fee, or before the contract period expires, the gas meter itself confirms whether to add a prepaid fee or renew the contract period. Since the signal is transmitted and the gas supply management is performed based on the response result to the update confirmation signal, the update process can be executed with the gas meter using a pre-registered portable terminal device or the like. In addition, it is not necessary to perform pre-processing such as payment of prepaid charges or purchase of an IC card, and the burden on the consumer can be reduced.

  According to a third aspect of the present invention, the personal recognition means performs a recognition code collating process on the response signal corresponding to the update confirmation signal transmitted from the update determination means, and is updated when it matches the pre-stored recognition code. It is characterized in that it is possible to perform a subsequent update process after judging that it is a right holder, and to disable the update process if they do not match.

  And when the response signal corresponding to the update confirmation signal is received, it is confirmed whether or not the response signal is from the update right holder by the verification process of the recognition code, and only when it is judged as the update right holder Since update processing is possible, secure update processing in consideration of security can be executed.

  According to a fourth aspect of the present invention, the personal identification means includes a wireless module having the same communication frequency band as that of the wireless module built in the gas meter as a portable terminal device, receives an update confirmation signal from the gas meter, and uses it as an update confirmation signal. In response, a recognition code assigned in advance is transmitted, and an update signal is transmitted in accordance with the collation result of the personal recognition means.

  Since a terminal device such as a mobile phone having a wireless module having a channel communicable with the gas meter is registered in advance, the update process is executed by wireless communication with the gas meter using the registered mobile terminal. The update can be performed only by an update signal from the update right holder, and the update process can be easily performed using the portable terminal.

  5th invention has the antenna for radio | wireless communication integrally comprised in the outer periphery of the gas meter, and the display means which displays the various information memorize | stored in the information storage means etc., The said antenna for radio | wireless communication is the said It is formed integrally with a glass body that covers the display means.

Then, an antenna for wireless communication is integrated with a non-metal body arranged so as to face a display window provided in a part of an outer shell made of a metal body, for example, a glass body covering the front surface of the display means. By forming the gas meter, the wireless signal can be effectively received in the gas meter in which the part other than the display window is covered with a metal body, and the antenna is configured by using the members constituting the gas meter. The gas meter itself having the gas supply / stop function and the flow rate measuring function can also be used as the transmitter / receiver for information communication, and the gas meter is installed. It is possible to perform various information transmission / reception and update procedure processing.

  A sixth invention includes a display terminal device, and when there is a meter reading instruction from the base station, transmits charge information and / or gas usage information within a predetermined period stored in the information storage means to the display terminal device. At the same time, a notification completion signal is transmitted to the base station.

  And after transmitting the meter reading value data or the usage amount information processed based on the meter reading value data to the base station, the usage amount information is transmitted to the display terminal device, and the notification completion signal to the display terminal device is transmitted to the base station. By doing so, it can be confirmed that the information transmission to the consumer is completed at the center, and a reliable information transmission system can be constructed.

  A seventh invention includes a display terminal device, and when an update confirmation signal is output from the gas meter update determination means, a signal indicating that the update time is approaching and update processing is required is transmitted to the display terminal device. It is characterized by doing so.

  When an update confirmation signal for confirming whether or not to add a prepaid charge or renew the contract period is output from the update determination means, the information is displayed with the same communication channel as the wireless module built in the gas meter. Since it is transmitted to the terminal device and displayed through the screen of the display terminal device, the necessity for the update process can be strongly appealed, and forgetting to update can be prevented.

  The eighth invention is characterized in that 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 meter 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. Therefore, a rational information transmission system can be constructed instead of the conventional information transmission by mail.

  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 between a gas cutoff device and a base station and a customer's house in Embodiment 1 of the present invention, FIG. 2 is an external view of the gas cutoff device and components, and FIG. FIG. 4 is a block diagram showing the configuration of the control circuit board of the gas cutoff device.

  A gas meter 2 is installed at the entrance of the gas supply pipe 1 of each household, and the gas 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. 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 gas meter 2 has a prepaid function or a contract function for each period, and is a system in which gas supply is started by concluding a gas supply contract in advance between a consumer and a gas company. . In the prepaid function, when a customer pays a gas usage fee to a gas company in advance, a gas usable amount corresponding to the prepaid amount is set in the gas meter 2, and when the gas is consumed, this gas usable amount is generated. When the measured amount of use is subtracted and the remaining usable amount of gas reaches a predetermined remaining amount, the gas meter 2 outputs a signal that informs the necessity of updating because the remaining amount is reduced. When the predetermined update process is executed in response, the gas usable amount corresponding to the updated prepaid amount is set. Further, when the update process is not executed without responding to the notification signal, the gas supply is stopped when the remaining amount of the prepaid charge is exhausted.

  The contract function by period is a gas supply contract between a customer and a gas company every predetermined period, for example every month, and gas can be used freely during the contract period, and the contract period ends. If a confirmation signal indicating whether or not to continue the contract is output from the gas meter 2 before and a predetermined update process is executed in response to the confirmation signal, the gas can be continuously used for the updated period. If the update process is not executed without responding to the above, the gas supply is stopped at the end of the contract period. Then, the gas charge during the contract period is subjected to predetermined information processing from the usage data accumulated and stored in the gas meter 2 based on a periodic data request command from the gas company 15, and then the gas charge and the gas usage Or it is transmitted to the consumer 13 and the gas company 15 as information, such as discount service which a gas company provides, and the gas charge according to the usage-amount will be collected.

  As the transmitting means, as shown in FIG. 2, a wireless module 11 integrated with a control circuit board 10 constituting flow rate measuring means built in the gas meter 2 is used, and this wireless module 11 is connected to a connector 10d. A gas meter that is detachably mounted on the control circuit board 10 and does not have the wireless module 11 and does not have a communication function, and a gas meter that has the wireless module 11 and a communication function can be arbitrarily selected. The system 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.

  In addition, a wireless antenna is necessary as an essential component in wireless communication. However, since the gas meter 2 is generally installed outdoors, its outer shell is made of a solid metal. It was difficult to construct an antenna. Therefore, the present invention provides means for configuring an antenna in the display window 2j that constitutes a part of the outer shell. Specifically, as shown in FIG. 9, glass disposed so as to cover the display window 2j. The antenna 2 is formed as a pattern band on the body 2k. With this configuration, it is not necessary to provide the antenna 30 separately, the configuration can be simplified, the influence of obstacles and the like can be reduced, and effective reception is achieved. Performance can be ensured. The antenna 30 can be formed on a glass body covering the front surface of the display means 2e such as a liquid crystal disposed facing the display window 2j, and the same effect can be obtained. The form is not limited as long as the antenna is configured.

As shown in FIG. 4, 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 the terminal device 12 such as a personal computer or a mobile phone 12b, the area communication wireless module 11b having a specific low-power wireless communication frequency band of 429 MHz, for example, is used, and the calculation of gas usage is performed based on the flow rate signal and sensor signal. Alternatively, when data is received from the control circuit 10a that detects an abnormality such as an earthquake or a gas leak, the gas shut-off valve is operated in accordance with the data, for example, the gas charge, the amount of gas used, or the occurrence of an abnormality such as an earthquake or a gas leak. In the case of contents to be notified to the consumer, the area communication wireless module 11b is used to Transmitting the display data to the terminal device 12 such as Levi 12a or the mobile phone 12b.

  Then, as shown in FIG. 5, the terminal device 12 also transmits a radio module 11c having the same communication frequency band as that of the area communication radio module 11b built in the gas meter 2 so as to be transmitted from the gas meter 2. Various data such as display data can be received, and by displaying this display data through the screen of the television 12a or the mobile phone 12b, information can be transmitted directly from the gas meter to the consumer. As in the prior art, 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. Since it is no longer necessary to employ, the number of man-hours required for 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 the gas charge to realize the rationalization of notification operations.

  When various information is transmitted from the gas meter 2 to the 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 transmission of information to the consumer has been completed. In this case, it is preferable to receive a response signal from the terminal device 12 and transmit a notification completion signal, so that information can be more reliably transmitted to consumers.

  Here, an example of information transmission will be described. First, when a meter reading instruction from the gas operator 15 is transmitted in the wide communication frequency band (200 MHz) via the base station 14, the wide area communication wireless built in the gas meter 2 is used. The module 11a receives the meter reading instruction information and sends it 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 the wide-area communication frequency band (200 MHz), and meter reading information is transmitted from the base station 14 to the gas company 15 using a dedicated line. The area communication wireless module 11b transmits to the wireless module 11c integrally attached to the display terminal device 12 such as the television 12a in the specific low-power wireless communication frequency band (429 MHz), and displays, for example, FIG. 6A on the screen. Display charge information and usage as shown in. 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.

Further, when the shut-off valve is operated due to an earthquake or an impact, the cause is investigated, and when a return instruction from the gas operator 15 is transmitted in the wide communication frequency band (200 MHz) via the base station 14, the gas meter 2 is The built-in wide area communication wireless module 11a receives the information and sends the return instruction information to the control circuit 10a mounted on the same board. 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 In the power wireless communication frequency band (429 MHz), the data is transmitted to the wireless module 11c integrally attached to the display terminal device 12 such as the television 12a, and the procedure of the return operation as shown in FIG. 6B is displayed on the screen, for example. To do. 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. In the case of the meter reading instruction from 15, it is necessary to transmit the storage information of the information storage means 10b to the gas company 15 and the display terminal device 12, and in this case, for example, the wide area communication wireless module 11a having a communication frequency band of 200 MHz. For example, the area communication wireless module 11b having a specific low-power wireless communication frequency band of 429 MHz is selected, and in the case of a return instruction from the gas company 15, the storage information of the information storage unit 10b is transmitted to the display terminal device 12. In this case, for example, the area communication wireless module 11b having a specific low power wireless communication frequency band of 429 MHz is used. It may be set-option.

  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.

  In addition, the gas meter 2 according to the present embodiment can perform the prepaid charge update process or the gas supply period extension update process using the built-in wireless module 11, and the necessity for the update occurs. In response to the update confirmation signal transmitted from the area communication wireless module 11b, a recognition code is transmitted from the terminal device 12 such as the cellular phone 12b registered in advance, and this recognition code is stored in the gas meter 2. If it matches the recognition code, it is determined that the transmission is from the update right holder, the update process is permitted, and an update process signal is transmitted again to the mobile phone 12b. And when the signal of the update process is sent from the mobile phone 12b, the prepaid fee is updated or the contract period is updated, and the gas supply is continued.

  In addition, when a signal not to be updated is sent from the mobile phone 12b or when there is no response signal, the supply of gas is stopped via the shut-off valve control means when the prepaid fee is exceeded or the contract period ends. To do.

  Thus, in the gas shut-off device that performs gas supply management within a predetermined prepaid charge or contract period, the prepaid charge or contract period update process is registered in advance using the wireless module 11 built in the gas meter 2. By performing wireless communication with the mobile terminal device 12b, it is possible to reduce the burden on the consumer, simplify the update process, and eliminate the burden on the gas company due to non-payment of charges.

  This update process will be briefly described together with the flow rate measuring means for measuring the gas flow rate built in the control circuit 10a.

As shown in FIGS. 2 and 3, the gas meter 2 has a gas inlet 2a and a gas outlet 2b. A gas flow path between the gas meter 2 and a shut-off valve 2c for shutting off gas in the event of an abnormality and a pair of supermeters for measuring the gas flow rate are provided. A sonic sensor 17 is provided, and a pressure sensor 2d for detecting gas pressure is disposed downstream thereof. 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. In the present embodiment, in addition to the manual return button 2g, there is provided a shutoff valve control means 25 that can automatically shut off or return the shutoff valve 2c with an electrical signal.

  Then, the flow rate measurement unit 17 and the control circuit 10a that measure the gas flow rate, for example, as shown in FIG. 7, 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 control circuit 10a is provided with a setting means 26 for setting a gas usable amount corresponding to a prepaid charge determined in advance, and when the usable amount is set by the setting means 26, the gas usage within the range is set. Is possible. Then, the initial setting of the setting means 26 is performed by causing the personal recognition means 27 to store an individual recognition code assigned to a pre-registered mobile terminal device, for example, the wireless module 11c built in the mobile phone 12b, so that the wireless module of the mobile phone 12b is used. When the identification code transmitted from 11c is collated and matched by the personal recognition means 27, the setting means 26 is made operable, and a shut-off valve 2c is opened by supplying an opening signal to the shut-off valve control means 25 to supply gas. Finish initial setting as possible.

  When the gas appliance is used and gas is consumed, the flow rate value is obtained by the signal processing means 19 through the measuring means. The obtained flow rate value is subtracted from the available gas amount set in the setting means 26 as the used gas amount, and stored in the remaining amount storage means 28 as the available remaining amount. When the usable remaining amount decreases to a predetermined value, a signal is sent to the update determination means 29, and an update confirmation signal for confirming whether or not to update is output from the update determination means 29. This update confirmation signal is transmitted as a radio signal from the area communication radio module 11b built in the gas meter 2, and is a display terminal device such as a television 12a or the like that incorporates the radio module 11c having the same communication frequency band as the area communication radio module 11b. The mobile terminal device such as the telephone 12b receives it. The TV 12a or the mobile phone 12b that has received this information displays on the screen that the time for adding the prepaid charge is approaching, and can strongly appeal the necessity of the update process to the customer. Stopping of gas supply can be avoided.

When the update process is executed in response to the update confirmation signal, a recognition code is transmitted from the mobile phone 12b registered in advance, and when the personal recognition means 27 approves the recognition code, the update determination means 29 again. When an update process signal is transmitted and an update signal is transmitted from the mobile phone 12b in response to the update process signal, the update determination means 29 determines "update is present" and the remaining capacity of the remaining capacity storage means 28 is zero. Alternatively, when the value becomes close to zero, the set value of the setting means 26 is set to an initial value, and the remaining amount of the remaining amount storage means 28 is initialized.

  If the response of the recognition code is not returned after the update confirmation signal is transmitted, the update confirmation signal is transmitted again when the remaining amount further decreases to a predetermined value. If there is no response in this retransmission processing, when the remaining amount in the remaining amount storage means 28 becomes zero, a closing signal is output to the shutoff valve control means 25, the shutoff valve 2c is shut off, and the gas supply is stopped.

  If the gas supply is stopped due to forgetting to update or the like, a recognition code is transmitted from the mobile phone 12b registered in advance in the same step as the initial setting, and the personal recognition means 27 has already registered it. If it matches with the recognition code, it is determined that the transmission is from the update right holder and the update process is enabled.

  Thus, when performing gas supply management using the prepaid function, a specific low-power radio communication frequency band is used between the area communication radio module 11b built in the gas meter 2 and the mobile phone 12b registered in advance. The initial setting and the prepaid charge update process can be easily performed by the communication, and the burden on the consumer can be greatly reduced as compared with the conventional process involving the gas business. Then, when the initial setting and update processing are completed, the information is transmitted to the base station 14 using the wide area communication wireless module 11a and notified to the gas company 15. Thereby, the gas company 15 collects a prepaid fee when the initial setting is completed based on an automatic withdrawal contract with a customer who has previously contracted, and collects a prepaid fee each time the update process is completed.

  In addition to the prepaid method, a contract method by period is conceivable. This is because the gas supply period is determined in advance, gas is supplied during the contract period, the gas supply is stopped when the contract period ends, and before the contract period. When the update process is performed, the supply period is continued. For example, when the contract is made on a monthly basis, the setting means 26 sets the number of days for each month, and the remaining number of days storage means 28 is replaced with the remaining amount storage means 28. Provided. Other than that, it is the same as the prepaid type.

  First, as an initial setting, when a recognition code is transmitted from the mobile phone 12a registered in advance, a collation process is performed with the recognition code stored in the personal recognition means 27. If the identification code matches in this collation process, the setting means 26 is set to the number of days per month. If set in the middle of a month, the remaining number of days in that month is set. When the setting means 26 becomes operable, an opening signal is output to the shut-off valve control means 25, the shut-off valve 2c is opened, and the gas can be supplied to complete the initial setting.

  When the gas appliance is used and gas is consumed, the flow rate value is obtained by the signal processing means 19 through the measuring means. The obtained flow rate value is accumulated in the information storage means 10b and stored as accumulated data for each predetermined period. When the predetermined period elapses, it is subtracted from the number of days set in the setting means 26 and stored as the remaining number of days in the remaining number of days storage means 28. When the remaining number of days decreases to a predetermined value, a signal is sent to the update determination means 29, and an update confirmation signal for confirming whether or not to update is output from the update determination means 29. This update confirmation signal is transmitted as a radio signal from the area communication radio module 11b built in the gas meter 2, and is a display terminal device such as a television 12a or the like that incorporates the radio module 11c having the same communication frequency band as the area communication radio module 11b. The mobile terminal device such as the telephone 12b receives it. The TV 12a or the mobile phone 12b that has received this information displays on the screen that the end of the contract period is approaching, and can strongly appeal the necessity of the update process to the customer. Stopping of gas supply can be avoided.

  When the update process is executed in response to the update confirmation signal, a recognition code is transmitted from the mobile phone 12b registered in advance, and when the personal recognition means 27 approves the recognition code, the update determination means 29 again. When an update processing signal is transmitted and an update signal is transmitted from the mobile phone 12b in response to the update processing signal, the update determining means 29 determines that “update is present” and the remaining number of days in the remaining number storage means 28 is zero. Alternatively, when the value becomes close to zero, the setting value of the setting means 26 is set to the number of days of the update month, and the value of the remaining number of days storage means 28 is initialized.

  If the response of the recognition code is not returned after the update confirmation signal is transmitted, the update confirmation signal is transmitted again when the remaining number of days is further decreased to a predetermined value. If there is no response in this resending process, when the remaining number of days in the remaining number storage means 28 becomes zero, a closing signal is output to the shutoff valve control means 25, the shutoff valve 2c is shut off, and the gas supply is stopped.

  If the gas supply is stopped due to forgetting to update or the like, a recognition code is transmitted from the mobile phone 12b registered in advance in the same step as the initial setting, and the personal recognition means 27 has already registered it. If it matches with the recognition code, it is determined that the transmission is from the update right holder and the update process is enabled.

  As described above, when performing gas supply management using the contract function by period, the specific low-power radio communication frequency band between the area communication radio module 11b built in the gas meter 2 and the mobile phone 12b registered in advance. By using communication, initial setting and contract period update processing can be easily performed, and the burden on the consumer can be greatly reduced as compared with conventional processing involving a gas business operator. Then, when the initial setting and update processing are completed, the information is transmitted to the base station 14 using the wide area communication wireless module 11a and notified to the gas company 15. As a result, the gas company 15 collects the charge obtained from the accumulated data for each predetermined period stored in the information storage means 10b transmitted from the gas meter 2 based on the automatic withdrawal contract with the customer who has contracted in advance. And manage gas supply for each contract period.

  Further, the gas meter 2 is provided with a shutoff valve 2c for shutting off the gas flow in an abnormal state or the like in the flow path 16 where the flow rate measuring unit 17 is disposed, and the flow rate value required by the signal processing means 19 is abnormally large. In this case or when the flow rate value is detected exceeding the normally considered use 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, impact, or abnormal gas pressure signal is input from the vibration sensor or pressure sensor 2d, the shutoff valve 2c is operated via the information storage means 10b to shut off the gas flow path 16.

  In recent years, gas meters using an ultrasonic sensor can easily measure the instantaneous flow rate. Therefore, in addition to a security function such as gas leakage, provision of various services using an instrument discrimination function has been studied.

  An example of this would be to set a discount rate for gas charges according to the equipment used and the application, specify the gas appliance or application used by the instrument discrimination means using the instantaneous flow rate measurement function by the ultrasonic sensor, The amount of use is determined for each appliance or for each purpose, and a gas rate is calculated by applying a predetermined discount rate, thereby promoting gas use and providing services to consumers.

  As an example of the specific means, an appliance signal registration means 21 for setting and registering an appliance signal specifying the type of gas appliance to be used, an application-specific signal registration means 22 for specifying a usage form for each usage of the gas appliance to be used, and There is provided an appliance discriminating means 24 having appliance classification means 23 for classifying household gas appliances for each predetermined classification based on the registration information of the appliance signal registration means 21 and the application-specific signal registration means 22.

Here, the appliance signal registration means 21 sets and registers a signal according to the type of appliance, for example, as shown in the following table (Table 1).

  Moreover, the signal registering means 22 classified by use sets and registers a signal for specifying a use form for each use of the appliance, for example, as shown in the following table (Table 2).

  Further, the appliance classification means 23 is the information obtained in the above (Table 1) and (Table 2), in which the gas business operator presets and classifies the discount target field of the gas fee based on the type and usage pattern of the gas appliance. For example, as shown in the following table (Table 3), if floor heating is performed using a water heater, discount A is used, and hot air is supplied by a gas fan heater or the like. When heating is performed, the discount is set to B, and the others are classified as standard, and the gas appliances used in the home are set and registered.

  Information storage for monitoring the amount of gas used according to the usage status of the gas appliance based on the registration signal from the appliance discriminating means 24 comprising the appliance signal registration means 21, the application-specific signal registration means 22, and the appliance classification means 23. Means 10b are provided. This information storage means 10b receives the gas flow rate value obtained by the signal processing means 19 of the flow rate measurement unit 17, is managed together with the registration information of the gas appliance corresponding to the field classified by the appliance classification means 23, and is supplied by the gas operator. When the wireless module 11 receives the meter reading instruction information periodically requested from 15, specifically, the wide area communication wireless module 11 a, the accumulated flow data for each predetermined period of the information storage means 10 b, the charge data reflecting the discount rate, etc. Information is taken out and transmitted to the base station 14 and the display terminal device 12 from the wireless module 11, more specifically, the wide area communication wireless module 11a and the area communication wireless module 11b, and notified to the gas company 15 from the base station 14 using a dedicated line. At the same time, the gas price information for a predetermined period is notified to the consumer using the screen of the display terminal device 12.

  An outline of appliance discrimination performed by the information storage means 10b will be described below. As registration data stored in the appliance discrimination means 24, for example, a flow rate pattern as shown in FIG. As actual registration data, for example, data of a flow rate value every 0.2 seconds from the start of the instrument is stored for a predetermined time. Note that the data time interval does not need to be limited to 0.2 seconds, and can be arbitrarily set depending on the required appliance discrimination capability.

  The flow rate measuring unit 17 measures the gas flow rate at regular intervals, and when the newly measured gas flow rate value increases by more than a predetermined value from the previous value, it is determined that a new instrument has been used, and the flow rate change and instrument discrimination The flow rate pattern corresponding to the instrument code registered in the means 24 is compared to determine the instrument being used.

  In the present embodiment, the information storage means 10b manages the information on whether or not there is a gas appliance use registration for each classified item and the total gas use amount for each predetermined period, for example, During the heating period in winter, as shown in Table 3, the amount of gas used is managed with the equipment used for floor heating and hot air heating registered, and in summer the gas is used without any equipment used for discounting. In addition to this, for example, by adding a function for obtaining the amount of gas used for each gas appliance classified by the appliance discriminating means 24 to the information storage means 10b, a finer classification It is possible to provide a variety of services and enhance security.

  Further, in the present embodiment, the discount item is targeted as a classification item of the appliance discriminating means 24. However, the present invention is not limited to this, and it is intended for a service that a gas company or the like considers necessary, such as a security service. A monitoring method for each device can be adopted.

  Moreover, it is also possible to apply the fee discount service using the appliance discriminating function to the gas supply management by the prepaid function or the contract function according to the period in the present embodiment, so that the merits for consumers can be further appealed. .

  As described above, the shutoff valve control means 25 for executing gas supply / stop by the prepaid function or the contract function by period is provided, and the gas supply is executed within a predetermined prepaid charge or contract period, and the prepaid charge is calculated. When an excess situation is expected or before the end of the contract period, the gas meter 2 transmits a signal notifying that renewal is necessary. When the update process is executed with this notification signal, a predetermined signal is transmitted to the gas meter 2 using the personal identification means 12b constituted by a pre-registered portable terminal or the like, and the recognition code included in this transmission signal is the gas meter. It is checked whether or not it matches the recognition code stored in advance in the personal recognition means 2 of No. 2, and if it matches, it is determined that the transmission is from the update right holder and the subsequent update processing is permitted.

  Then, a confirmation signal as to whether or not to update is transmitted again from the update determination means 29 of the gas meter 2, and a response signal from the personal identification means 12b is awaited. When an update signal is sent from the personal identification means 12b, the prepaid fee is updated or the contract period is updated, and the gas supply is continued through the shutoff valve control means 25. In addition, when a signal not updated is sent from the personal identification means 12b or when there is no response signal, the supply of gas via the shut-off valve control means 25 when the prepaid fee is exceeded or when the contract period ends. To stop.

  Thus, in the gas shut-off device that performs gas supply management within a predetermined prepaid charge or contract period, the prepaid charge or contract period update process is registered in advance using the wireless module 11 built in the gas meter 2. By performing wireless communication with the mobile terminal device 12b, the burden on the consumer is reduced and the update process is simplified.

  In addition, the gas meter 2 communicates with a specific terminal device using a wireless module 11a capable of communicating with a base station using a wireless communication means other than a telephone line and a wireless communication means such as a specific low power radio. Since the possible wireless module 11b is integrated with the flow measurement control circuit board 10 in the gas meter, communication with the base station 14 without using a telephone line is possible simply by installing the gas meter 2. Therefore, it is possible to smoothly transmit information such as a meter reading request command and an abnormal return command from the base station 14 without being affected by the congestion status of the line, and from the gas meter 2, meter reading value data based on the command from the base station 14 The information at the time of abnormality can be transmitted smoothly, and it is not necessary for the meter reader to go to the customer's house and perform the meter reading as before. It is possible to solve the problem that can not be reported to the Center of the congestion.

  In addition, when the gas usage fee can be expected to exceed the range of the prepaid fee, or before the contract period expires, the gas meter itself confirms whether to add a prepaid fee or renew the contract period. Since the signal is transmitted and the gas supply management is performed based on the response result to the update confirmation signal, the update process is executed with the gas meter 2 using the pre-registered mobile terminal device 12b or the like. Thus, it is not necessary to perform pre-processing such as prepaid payment or IC card purchase, and the burden on the consumer can be reduced.

  In addition, when a response signal corresponding to the update confirmation signal is received, it is confirmed whether or not the response signal is from the update right holder by the verification process of the recognition code, and only when it is judged as the update right holder Since update processing is possible, secure update processing in consideration of security can be executed.

  Further, a terminal device such as a mobile phone 12b having a built-in wireless module 11c having a channel capable of communicating with the gas meter is registered in advance, and update processing is executed by wireless communication with the gas meter 2 using the registered mobile terminal 12b. Therefore, it is possible to update only by an update signal from the update right holder, and it is possible to easily perform the update process using the portable terminal 12b.

  Further, an antenna 30 for wireless communication is attached to a non-metal body, for example, a glass body 2k covering the front surface of the display means, which is arranged so as to face a display window 2j provided in a part of an outer shell made of a metal body. By integrally forming, the gas meter 2 in which a part other than the display window 2j is covered with a metal body can effectively receive a radio signal, and the antenna 30 is configured by using the members constituting the gas meter 2. Therefore, a configuration for providing an antenna is not required, the configuration can be simplified, and the gas meter itself having a gas supply, stop function, and flow rate measurement function also serves as a transmitter and receiver for information communication. It is possible to perform transmission / reception and update procedure processing of various information simply by installing a gas meter.

  Further, after transmitting meter reading value data or usage amount information processed based on the meter reading value data to the base station 14, the usage amount information is transmitted to the display terminal device 12, and a notification completion signal to the display terminal device 12 is transmitted to the base station 14 as well. By transmitting to the station 14, it can be confirmed that the information transmission to the consumer is completed at the center, and a reliable information transmission system can be constructed.

  Further, when an update confirmation signal for confirming whether to add a prepaid fee or update a contract period is output from the update determination means, the information has the same communication channel as the wireless module 11b with a built-in gas meter. Since it is transmitted to the display terminal device 12 and displayed through the screen of the display terminal device 12, the necessity for the update process can be strongly appealed, and forgetting to update can be prevented.

  Further, by providing the television 12a or the mobile phone 12b with the wireless module 11c having the same communication frequency band as that of the wireless module 11b built in the gas meter 2, various display information transmitted from the gas meter 2 can be transmitted to the television 12a or the mobile phone 12b. The information can be displayed on the display unit, and a rational information transmission system can be constructed instead of the conventional information transmission by mail or the like.

  As described above, the gas shut-off device according to the present invention enables automatic meter reading according to the meter reading request instruction from the center only by installing a gas meter without using a telephone line, and prepaid based on the meter reading information. When processing is executed and a situation in which the prepaid fee is exceeded is expected, it is possible to perform an update process with a gas meter using a pre-registered mobile terminal, so that the payment of the prepaid fee and the IC card In addition to reducing the burden on consumers due to advance processing such as purchase, it is possible to easily perform recovery processing when an inadvertent gas supply is stopped, and it can also be applied to a water meter or an electricity bill meter.

Whole block diagram which shows the communication form of the gas cutoff device in Embodiment 1 of this invention The figure which shows the external appearance and component of the gas shut-off device Internal configuration diagram of the gas shutoff device Configuration block diagram of the control circuit board of the gas shutoff device The figure which shows the communication form of the gas cutoff device and the display terminal device (A) The figure which shows the charge information display form in the display terminal device (b) The figure which shows the return information display form in the display terminal apparatus Control block diagram of the gas shutoff device The figure which shows an example of the flow rate pattern for the instrument discrimination | determination in the gas cutoff device Configuration diagram of the radio antenna of the gas shut-off device

Explanation of symbols

2 gas meter 10 control circuit board 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 12 display device 12a television 12b mobile phone 14 base station 25 shut-off valve control device 26 setting means 27 Personal recognition means 28 Remaining amount storage means 29 Update discrimination means

Claims (8)

Prepaid system with a wireless module that can monitor the usage status of multiple gas appliances connected to piping after passing through a gas meter, and can directly send and receive data using multiple communication lines other than telephone lines. Alternatively, it is a gas shut-off device that performs gas supply management in a contract system according to period,
The gas meter includes a flow rate measuring unit that measures a gas flow rate, a gas shut-off valve that automatically shuts off and returns the gas flow path, an information storage unit that stores various information based on measurement results of the flow rate measuring unit, and a plurality of information A wireless module that transmits / receives information to / from the other party, a communication switching unit that switches the communication frequency band according to the other party, and an individual that recognizes the other party from the received information and permits communication when it matches the pre-stored recognition code Recognizing means, update determining means for determining renewal of prepaid or contract period from received information after communication permission by said personal recognizing means, and shut-off for controlling said gas shut-off valve based on the determination result of said update determining means Valve control means,
The wireless module is configured integrally with a control circuit that constitutes the flow rate measuring means and is housed in the gas meter, and at least a communication frequency band with a base station and a communication frequency with a personal identification means that transmits a personal identification code Gas shut-off device with a belt. The renewal discriminating means enables gas supply within a certain amount of advance payment or within the contract period, and if it is expected to exceed the range or before the contract for the gas supply period ends, The gas cutoff device according to claim 1, wherein an update confirmation signal is transmitted using a wireless module, and gas supply management is performed in accordance with the presence or absence of a response signal corresponding to the update confirmation signal. The personal recognition means performs a recognition code verification process on the response signal corresponding to the update confirmation signal transmitted from the update determination means, and determines that it is an update right holder when it matches the pre-stored recognition code. The gas shut-off device according to claim 1 or 2, wherein the update process after that is enabled, and the update process is disabled when they do not match. The personal identification means is a portable terminal device that incorporates a wireless module having the same communication frequency band as the built-in wireless module in the gas meter, receives an update confirmation signal from the gas meter, and is given in advance in response to the update confirmation signal The gas cutoff device according to any one of claims 1 to 3, wherein a recognition code is transmitted, and an update signal is transmitted in accordance with a collation result of the personal recognition means. A glass body that includes an antenna for wireless communication integrally formed on an outer periphery of a gas meter, and a display unit that displays various information stored in an information storage unit or the like, and the antenna for wireless communication covers the display unit The gas shut-off device according to any one of claims 1 to 4, wherein the gas shut-off device is formed integrally. A display terminal device,
When a meter reading instruction is received from the base station, the charge information and / or gas usage information within a predetermined period stored in the information storage means is transmitted to the display terminal device, and a notification completion signal is transmitted to the base station. The gas cutoff device according to any one of claims 1 to 5. A display terminal device,
6. An update confirmation signal is output from an update determination means of a gas meter, and a signal indicating that the update time is approaching and update processing is necessary is transmitted to the display terminal device. The gas shut-off device according to 1. The gas cutoff device according to any one of claims 1 to 7, wherein the display terminal device is a television or a cellular phone, and a wireless module having the same communication frequency band as that of the wireless module incorporated in the gas meter is built in or integrally attached thereto.