JP2008123152A - Gas circuit breaker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gas circuit breaker for selecting a gas pressure reduction processing mode according to the signal of a client in respose to repair work start information. <P>SOLUTION: This gas circuit breaker is provided with: a flow rate measuring means 17 for measuring a gas flow rate; a gas shutoff valve 2c for interrupting a gas channel when any abnormality occurs; an information storage means 10b for storing various information based on the measurement result of the flow rate measuring means 17; a radio module 11 for transmitting/receiving information to/from a plurality of other parties; and a communication switching means 10c for switching a communication frequency band according to the other parties. This gas circuit breaker is configured to transmit a repair work permission signal to specific terminal equipment 12 when receiving repair work information to be transmitted from a base station 14, and to select a predetermined pressure reduction processing mode according to the response signal to the transmitted repair work permission signal. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a gas shut-off device, and more particularly to a means for effectively processing various types of information related to gas work.

  Conventionally, as this type of gas shut-off device, a flow rate measuring unit that outputs a flow rate signal corresponding to the amount of passing gas, a shut-off unit that shuts off and opens a gas passage downstream from the device, a flow rate signal is monitored, and a specific investigation period A no-flow time zone in which no flow signal exists between and is detected, and a no-flow learning unit that outputs a pressure inspection request signal when the no-flow time zone is reached, and no flow signal is received in the no-flow time zone A pressure inspecting unit for instructing to shut off the gas passage to the shut-off unit and detecting whether or not the gas passage blocked by the pressure detecting unit for detecting pressure fluctuations does not drop more than a predetermined value within a predetermined time. A gas shut-off device is disclosed (see, for example, Patent Document 1).

  Further, a gas leak detection device that is provided between the supply side gas pipe and the demand side gas pipe and detects a gas leak in the demand side gas equipment, the detection means for detecting the gas flow rate, and the consumer A gas usability judging means for judging that the possibility of using the gas equipment is low, a shut-off valve capable of automatically opening and closing the gas, a gas pressure detecting means for detecting the pressure on the demand side of the shut-off valve, When a signal indicating that the gas availability is low is input from the gas availability determination means, the shut-off valve is closed, and then the detected gas pressure of the gas pressure detection means is monitored for a predetermined time. When it is detected that the gas pressure has dropped to a certain extent, a gas leak signal is determined and a gas leak signal is issued. Gas leak signal is input Gas leak detection apparatus and a warning command means for issuing an alarm to consumers is disclosed (for example, see Patent Document 2).

Further, in a wireless automatic meter reading system or the like, a wireless master device that communicates with a wireless slave device provided in the meter via a wireless line to collect information including data measured by the meter is provided. The wireless master unit and the wireless slave unit are configured in a 1: N configuration so that N wireless slave units can be connected to one master unit. There is one that performs wireless communication with a wireless device and communicates with the center device side via a mobile phone line or a teleterminal wireless line (for example, see Patent Document 3).
JP-A-8-121863 JP-A-8-5502 JP 2001-111701 A

  However, the conventional configuration disclosed in Patent Document 1 obtains a flow no-time zone by use pattern learning control, and performs a predetermined gas leak test during the flow no-time zone. Although it has a pressure detection unit that monitors the pressure drop status in the road, there is no disclosure of the idea of distinguishing and monitoring the pressure drop due to gas leakage and gas drop due to gas construction, By distinguishing and monitoring, it is not possible to accurately determine whether or not to notify the center of pressure drop information detected by the gas meter, and there may be frequent inquiries to the center even when pressure drops due to construction work. .

Further, the conventional configuration disclosed in Patent Document 2 stores a flow rate signal in association with a day time zone, selects a time zone with the least possibility of using gas equipment in the day time zone, and When an inspection start signal is output from the gas availability determination means that determines that the gas availability is low when the time zone is entered, a predetermined gas leakage inspection is performed. Similarly to Patent Document 1, the timing for inspecting the gas leakage in the gas pipe is obtained. The information on the gas construction is transmitted and the response information is used to reduce the pressure drop and the gas when the gas supply is stopped. The pressure drop due to leakage or the like is not separately monitored, but the effect of reducing the false alarm to the center by specifying the pressure drop due to the construction by distinguishing and monitoring cannot be obtained.

  Further, in the wireless automatic meter reading system disclosed in Patent Document 3, a wireless device is provided in addition to a gas meter to perform automatic meter reading, and the wireless device is used for communication with the center and communication with the wireless device. It was necessary to install a master unit. In addition, since communication with the center is performed via a telephone line, smooth information transmission may not be possible when the line is congested.

  The present invention solves the above-mentioned problem, and is equipped with a wireless module capable of direct transmission / reception using a communication line other than a telephone line with a plurality of destinations. By providing a distinction and monitoring of the gas pressure drop, a gas shut-off device is provided that reduces misreporting of gas pressure drop information associated with work on the center.

  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 equipped with a wireless module capable of direct transmission / reception using a line, wherein the gas meter includes a flow rate measuring means for measuring a gas flow rate, and a gas shut-off valve capable of shutting and opening the gas flow path. An information storage means for storing various information based on the measurement result of the flow rate measurement means, a pressure detection means for detecting the pressure in the gas flow path, and a pressure determination unit for determining the presence or absence of an abnormality from the pressure signal of the pressure detection means, A wireless module for transmitting / receiving information to / from a plurality of counterparts, the wireless module being integrated with the control circuit and housed in the gas meter, and at least a communication frequency with the base station When receiving construction information transmitted from the base station, the base station transmits a construction permission signal to the specific terminal device and receives a response signal from the specific terminal device. When a pressure drop signal is output from the pressure determination unit, it is determined whether or not to send the information on the occurrence of pressure drop to the base station according to the response signal to the work enable / disable signal. If the response signal is a construction approval signal, the pressure drop occurrence information is not sent to the base station, and if there is no response signal for the work permission signal or the work rejection signal, the pressure drop occurrence information is sent to the base station. It is what I did.

  According to the above invention, a wireless module capable of communicating with a base station using wireless communication means other than a telephone line, and various types of information from the base station using a wireless communication means such as a specific low power radio, Since the wireless module capable of communicating with a specific terminal device such as a telephone is integrated into the control circuit board for flow measurement in the gas meter, the base station and the telephone line can be connected only by installing the gas meter. Communication is possible without using it, and the construction information from the base station can be smoothly transmitted without being affected by the congestion status of the line. From the gas meter, the construction information from the base station is transmitted to the specific terminal device. It is possible to smoothly transmit the work approval / disapproval signal based on the operation, there is no need to contact the start of the work separately using postal mail etc. as before, and the gas pressure drop due to the work and other gas The pressure drop can be monitored easily distinguished.

In addition, since the construction availability signal transmitted from the gas meter can be transmitted to a specific terminal device such as a television or a mobile phone, the construction information including the availability confirmation is displayed by using this television or a cellular phone. It is possible to omit the work of starting construction work, which was done by mail from the center, as shown in Fig. 2, and in response to this confirmation of availability, the gas utility returns the construction approval signal or construction rejection signal to the gas meter. It is possible to confirm that the house has accepted the start of gas construction, to build a rational information transmission system, and to avoid reporting to the center when gas pressure drops due to construction. Therefore, it is possible to avoid the confusion of the gas company due to the information confusion.

  The gas shut-off device of the present invention is equipped with a wireless module capable of direct transmission / reception using a communication line other than a telephone line with a plurality of counterparts, and under construction and other gas pressures based on various information of the wireless module. Since the decrease is distinguished and monitored, it is possible to reduce misinformation of the gas pressure decrease information accompanying the construction to the center.

  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. The gas meter includes a flow rate measuring means for measuring a gas flow rate, a gas cutoff valve capable of shutting off and opening the gas flow path, and various types based on the measurement results of the flow rate measuring means. Information storage means for storing information, pressure detection means for detecting the pressure in the gas flow path, a pressure determination unit for determining the presence / absence of an abnormality from the pressure signal of the pressure detection means, and transmission / reception of information with a plurality of destinations The wireless module is configured integrally with the control circuit and housed in the gas meter, and communicates at least between a communication frequency band with a base station and a specific terminal device. When the construction information transmitted from the base station is received, the construction permission signal is transmitted to the specific terminal device, and when the response signal is received from the specific terminal device, the information is transmitted to the base station. Then, when a pressure drop signal is output from the pressure determination unit, it is determined whether or not to transmit pressure drop occurrence information to the base station according to a response signal to the construction availability signal, and a response to the construction availability signal If the signal is a construction approval signal, the pressure drop occurrence information is not transmitted to the base station, and if there is no response signal to the construction permission signal or the work rejection signal, the pressure drop occurrence information is transmitted to the base station. It is characterized by that.

  And, a wireless module that can communicate with the base station using a wireless communication means other than a telephone line, and various information from the base station is specified. A wireless communication means such as a low-power radio is used. Since the wireless module capable of communicating with the terminal device is integrated into the flow measurement control circuit board in the gas meter, it can communicate without using a telephone line with the base station just by installing the gas meter. Therefore, the construction information from the base station can be smoothly transmitted without being affected by the congestion status of the line, and the construction meter signal based on the construction information from the base station is sent from the gas meter to the specific terminal device. Can be transmitted smoothly, and there is no need to contact the start of construction using a separate mail, etc. as in the past, and gas pressure drop due to construction and other gas pressure drops It can be monitored to distinguish the easy.

  In addition, since the construction availability signal transmitted from the gas meter can be transmitted to a specific terminal device such as a television or a mobile phone, the construction information including the availability confirmation is displayed by using this television or a cellular phone. It is possible to omit the work of starting construction work, which was done by mail from the center, as shown in Fig. 2, and in response to this confirmation of availability, the gas utility returns the construction approval signal or construction rejection signal to the gas meter. It is possible to confirm that the house has accepted the start of gas construction, to build a rational information transmission system, and to avoid reporting to the center when gas pressure drops due to construction. Therefore, it is possible to avoid the confusion of the gas company due to information confusion.

  In the second invention, when construction completion information transmitted from the base station is received, a construction completion signal is transmitted to a specific terminal device. After that, when a pressure drop signal is output from the pressure determination unit, occurrence information of pressure drop Is transmitted to the base station.

  Even when the construction is completed, the construction information is transmitted from the base station to each gas meter, and a construction completion signal is transmitted to a specific terminal device upon receipt of this construction completion information. It is possible to fulfill the obligation, and the subsequent pressure drop phenomenon is judged to be a gas leak in the gas pipe and so on, and is sent to the base station, so it is possible to avoid the confusion of the gas operator due to information confusion .

  According to a third aspect of the present invention, a wireless module includes a wide-area communication wireless module having a wide-area wireless communication frequency band for communicating with a base station and a specific low-power wireless communication frequency band for communicating with a specific terminal device within a predetermined area. And a communication switching means for switching between the wide area communication wireless module and the area communication wireless module according to communication information.

  The base station uses a wide-area communication wireless module that is a communication means other than a telephone line, and uses an area communication wireless module that can communicate with a specific terminal device only within a predetermined area, depending on communication information. Since switching to use a wireless module separately, it is possible to freely execute communication between a base station and a specific terminal device simply by installing a gas meter, and a rational information transmission system can be constructed.

  The fourth invention is characterized in that the specific terminal device is a television or a mobile phone, and a radio module having the same communication frequency band as the area communication radio module built in the gas meter is built in or integrally attached thereto. It is.

  Then, by providing a radio module having the same communication frequency band as the radio module built in the gas meter in the TV or mobile phone, various information transmitted from the gas meter within a predetermined area is displayed on the display unit of the TV or mobile phone. It is possible to construct a rational information transmission system in place of conventional information transmission by mail or the like.

  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.

  In the figure, a gas meter 2 is installed at the inlet portion of the gas supply pipe 1 of each household, and the pipe branches 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, the amount of gas used, a 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 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.

  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 a specific 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 amount of gas used based on a flow rate signal or a sensor signal When receiving the data from the control circuit 10a that performs the calculation of the abnormality or the detection of an abnormality such as an earthquake or gas leak, and further the construction information transmitted from the gas company 15 through the base station 14, according to the received data, for example, Operation of the gas shut-off valve due to the occurrence of abnormalities such as gas charges, gas usage or earthquakes, gas leaks, etc. In the case of contents to be notified to the consumer, such as a construction permission signal including whether or not it is necessary to start or not, identification of the television 12a or the mobile phone 12b in the consumer's house 13 using the area communication wireless module 11b The data is transmitted to the terminal device 12.

  Then, as shown in FIG. 5, the display terminal device 12 also has a wireless module 11 c having the same communication frequency band as the area communication wireless module 11 b built in the gas meter 2. The transmitted data can be received, and this data is displayed through 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. Sends data from the gas meter 2 to the gas company 15 and mails postcards such as information processed by the gas company 15 or construction information from the gas company 15 such as a notice of charges and a notice of starting construction, etc. Since it is no longer necessary to adopt the information transmission method of sending to customers, the man-hours required for notification work can be reduced, One eliminates the occurrence of mailing costs notification postcards, etc., thereby contributing to the reduction of the gas charge to realize the rationalization of notification operations.

  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 to receive a response signal from a specific terminal device 12 and transmit a notification completion signal. In particular, construction information transmitted from the base station regarding the notification of construction start performed by the gas company 15 Is sent to the specific terminal device 12 such as the TV 12a or the mobile phone 12b, and the start of the gas work is notified on the screen of the TV 12a or the mobile phone 12b and the construction information including the confirmation of approval is displayed. Then, by returning a construction approval signal from the gas meter 2 in response to the acceptance confirmation of the consumer, the gas operator 15 can confirm that the consumer has accepted the start of the construction, and the consumer is more sure. It is possible to transmit information to and to construct a rational information transmission system.

Also, if there is no response to the construction permission signal or if a construction rejection signal is returned, gas may be used even if gas construction is carried out. There is a possibility that the supply of gas may be resumed with the gas stop being opened due to the stop of gas supply, and there is no problem if it has a function to automatically stop on the instrument side, but it has such a function If not, there is a risk of gas leakage, and it is necessary to notify the gas supply that the gas supply will be resumed at the time of restoration after the gas construction is carried out, or to confirm that the gas company is visiting.

  By performing a series of information transmission processing associated with this gas work through the wireless module 11 built in the gas meter 2, information transmission between the gas operator 15 and the customer 13 can be performed quickly and accurately, Gas pressure drop information due to gas supply stoppage due to gas construction can be distinguished from gas pressure drop information due to normal gas leakage, so it is possible to eliminate the information about gas pressure drop accompanying construction as abnormal And avoid the confusion of gas companies due to the complexity of information.

  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.

  Next, the flow rate measuring means for measuring the gas flow rate built in the control circuit 10a will be briefly described. As shown in FIGS. 2 and 3, the gas meter 2 has a gas inlet 2a and a gas outlet 2b. In the gas flow path, a shutoff valve 2c for shutting off the gas in the event of an abnormality and a pair of ultrasonic sensors 17 for measuring the gas flow rate are provided, and a pressure sensor 2d for detecting the 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.

  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 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. 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 and the center. To report to.

Next, a case where the gas company 15 performs replacement work such as gas piping and various inspections will be described.

  The gas company 15 transmits construction start information directly to the gas meter 2 through a communication line other than a telephone line, for example, a wide communication frequency band (200 MHz), through the base station 14 when performing pipe replacement work or various inspections. . When the wide area communication wireless module 11a built in the gas meter 2 receives this construction start information, the control circuit 10a uses the area communication wireless module 11b by the communication switching means 10c to the specific terminal device 12 such as the television 12a or the mobile phone 12b. A construction permission signal is transmitted, and construction related information including whether or not the gas supply accompanying the construction can be stopped is displayed on the screen of the television 12a, the mobile phone 12b, etc., for example, in FIG. As shown, the message “Perform gas pipe replacement work” and “Please respond whether or not the XX day can be done” is displayed along with the “Yes” or “No” selection display. Can be selected by operating a specific key, and the area of the gas meter 2 from the wireless module 11c integrally attached to the specific terminal device 12 is selected. Transmitting as a response signal to signal the wireless module 11b.

  When the area communication wireless module 11b receives a response signal “OK” from the specific terminal device 12, the control circuit 10a sends a response signal as a construction approval signal to the base station 14 using the wide area communication wireless module 11a by the communication switching means 10c. Send. From this response signal, the gas company 15 determines that the consumer has approved the start of the construction. Then, the construction approval signal is discriminated by the response signal discrimination means 21 and stored in the approval signal storage means 22 in association with the customer.

  When the area communication wireless module 11b receives the response signal “No” from the specific terminal device 12 or does not receive the response signal, the control circuit 10a uses the wide area communication wireless module 11a by the communication switching unit 10c. A response signal is transmitted to the base station 14 as a construction rejection signal. Based on this response signal, the gas company 15 determines that the gas construction on the designated day has not been approved, and the response signal determination unit 21 determines the response and stores it in the denial signal storage unit 22 in association with the customer. In this way, the consumer who has obtained the consent and the consumer who has not obtained the consent are distinguished and managed.

  When the construction is started and the gas supply is stopped, the gas pressure in the gas pipe for supplying the gas to each household decreases, and this phenomenon is detected by the pressure sensor 2d built in the gas meter 2 and is normal. In this embodiment, the gas meter that responds to the construction approval signal is reduced by the pressure sensor 2d, while the shutoff valve 2c is shut off and the base station 14 is notified. Even if this is detected, the shutoff valve 2c is not stopped and the center is not notified. In other words, since it is known that the gas pressure drop after the start of construction is due to the stoppage of gas supply accompanying construction, reporting to the center is suppressed as much as possible to avoid congestion. However, in the case of a construction rejection signal or no response, there may be a response signal from other than the construction target area. In this case, the shutoff valve 2c is stopped and sent to the center in the same manner as in the normal gas pressure reduction process. I am trying to make a report.

  In addition, when construction is completed, construction completion information is transmitted from the base station, and when this information is received, a construction completion signal is transmitted to a specific terminal device 12, and a notification suspension mode for the gas pressure drop signal that has been set so far After that, when a pressure drop signal is output from the pressure sensor 2d, information on occurrence of pressure drop is transmitted to the base station 14. The construction completion information is also displayed on the television 12a or the like as shown in FIG. 7B, for example, so that the completion of construction can be easily communicated to the consumer.

As described above, the gas shut-off device of the present invention includes a wireless module 11a capable of communicating with the base station 14 using wireless communication means other than a telephone line, and various kinds of information from the base station 14 such as a specific low-power radio. As a form in which a wireless module 11b capable of communicating with a specific terminal device 12 such as a television 12a or a mobile phone 12b using a wireless communication means is integrally incorporated in a flow measurement control circuit board 10 in the gas meter 2. Therefore, it is possible to communicate with the base station 14 without using a telephone line simply by installing the gas meter 2, and it is possible to smoothly transmit the construction information from the base station 14 without being affected by the congestion state of the line. The gas meter 2 can smoothly transmit the construction permission signal based on the construction information from the base station 14 to the specific terminal device 12 and is separately mailed as before. Can work contact it is not necessary to start, and monitored easily distinguish other Low Gas and Low Gas accompanying work with.

  In addition, since the construction availability signal transmitted from the gas meter 2 can be transmitted to a specific terminal device 12 such as the television 12a or the mobile phone 12b, construction information including availability confirmation using the television 12a or the cellular phone 12b is provided. By displaying, it is possible to omit the work of starting construction work that was done by mail from the center as before, and returning a construction approval signal or construction rejection signal to the gas meter 2 in response to this confirmation of availability. Thus, the gas company 15 can confirm that the consumer has approved the start of the gas construction, can construct a rational information transmission system, and go to the center when the gas pressure drop due to the construction occurs By not reporting this, it is possible to avoid the confusion of gas companies due to information confusion.

  Further, even when the construction is completed, the construction completion information is transmitted from the base station 14 to each gas meter, and a construction completion signal is transmitted to the specific terminal device 12 along with the reception of the construction completion information. Since it is determined that the subsequent pressure drop phenomenon is a gas leak in the gas pipe and the like and is transmitted to the base station 14, the confusion of the gas operator due to information confusion is avoided. be able to.

  As described above, the gas shut-off device according to the present invention is equipped with a wireless module capable of direct transmission / reception using a communication line other than a telephone line with a plurality of counterparts, and is transmitted from a gas company via a base station. When a construction information is received, a construction permission signal is transmitted to a specific terminal device, a construction-related information including necessity confirmation is displayed on the screen of the specific terminal device, and a necessity confirmation signal is received, and the necessity confirmation signal is displayed. Accordingly, the processing mode of the gas pressure drop signal is changed, so that troubles associated with construction can be distinguished and managed, and the present invention can be applied to various meters accompanied with construction.

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 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 (A) The figure which shows the construction information display form in the same specific terminal device (b) The figure which shows another construction information display form in the specific terminal device Control block diagram of the gas shutoff device

Explanation of symbols

2 Gas meter 2c Gas shut-off valve 2d Pressure sensor (pressure detection means)
DESCRIPTION OF SYMBOLS 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 Specific terminal device 12a Television 12b Cellular phone 14 Base station 17 Flow rate measurement means 21 Response signal determination means 22 approval signal storage means 23 denial signal storage means 24 pressure determination unit

Claims (4)

A gas shut-off device equipped with a wireless module that can monitor the usage status of multiple gas appliances connected to the pipe after passing through a gas meter and can directly transmit and receive data using multiple communication lines other than telephone lines. Because
The gas meter includes a flow rate measuring means for measuring a gas flow rate, a gas shut-off valve capable of shutting off and opening the gas flow path, an information storage means for storing various information based on measurement results of the flow rate measuring means, and a gas A pressure detection means for detecting the pressure in the flow path, a pressure determination unit for determining the presence or absence of an abnormality from the pressure signal of the pressure detection means, and a wireless module for transmitting and receiving information to and from a plurality of counterparts,
The wireless 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 specific terminal device,
When construction information transmitted from the base station is received, a construction permission signal is transmitted to the specific terminal device, and when receiving a response signal from the specific terminal device, the information is transmitted to the base station,
When a pressure drop signal is output from the pressure determination unit, it is determined whether to transmit the occurrence information of the pressure drop to the base station according to a response signal to the construction availability signal,
If the response signal for the construction permission signal is a construction approval signal, the information on occurrence of pressure drop is not transmitted to the base station, and if there is no response signal for the construction permission signal or is a construction rejection signal, the information on occurrence of pressure drop is displayed. Gas shut-off device designed to transmit to the base station. When construction completion information transmitted from the base station is received, a construction completion signal is transmitted to a specific terminal device. After that, when a pressure drop signal is output from the pressure determination unit, information on occurrence of pressure drop is transmitted to the base station. The gas shut-off device according to claim 1, which is configured as described above. A wireless module includes a wide area communication wireless module having a wide area wireless communication frequency band for communicating with a base station and an area communication wireless module having a specific low power wireless communication frequency band for communicating with a specific terminal device within a predetermined area. The gas cutoff device according to claim 1 or 2, further comprising a communication switching unit configured to switch between the wide area communication wireless module and the area communication wireless module according to communication information. The specific terminal device is a television or a mobile phone, and a wireless module having the same communication frequency band as the area communication wireless module built in the gas meter is built in or integrally attached thereto. Gas shut-off device.