JP2008209097A - Gas apparatus control system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily and rapidly take appropriate measures according to an apparatus in use or service condition by determining the apparatus in use. <P>SOLUTION: This gas apparatus control system includes: a unit 10 on a user side, which is provided with an ultrasonic flowmeter 11 connected to a gas filler tube 20 and measuring the instantaneous flow rate of gas, a flow rate calculating section 12 calculating a difference value of the flow rate for determining the apparatus from the instantaneous flow rate, an apparatus determining section 13 determining the apparatus in use by the flow rate change characteristics of the flow rate of the gas such as a variation and time of a change in the flow rate based on the difference value of the flow rate, and a communication section 41 transmitting information on service condition including information on the flow rate and information on the apparatus in use; and a control center unit 40 receiving information on the service condition from the unit 10 on the user side and selectively prescribing measures according to the flow rate and the result of determination of the apparatus. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a gas appliance management system that uses a gas meter for measuring a gas flow rate installed in a house or the like to grasp the usage status of a gas appliance or a gas supply path and manage a safety process.

  When using gas appliances, in order to prevent accidents caused by forgetting to turn off the gas, notifications and shutoff of the gas supply path at the time of abnormality at the gas user's home or the center managing the gas supply path The system that performs is spreading.

As a conventional gas appliance management system, when the gas usage duration approaches the continuous usage time, the central monitoring device side will shut off the gas supply via the telephone line and at this point in time The center monitoring device reports gas appliances that may be in use based on information associated with the gas appliances installed at the user's home and the usage flow rate and the received usage flow rate. There is a centralized monitoring system that selects and reports the name of the device to a user's home in response to receiving a cutoff notice (see, for example, Patent Document 1).
JP 11-53663 A

  However, in the conventional gas appliance management system, since the user's appliances and the like are centrally managed by the center monitoring device, reporting to the user's home is delayed, and appropriate measures according to the usage situation cannot be performed. There was a case. Moreover, when managing the gas appliance which the user is using, it was necessary to preserve | save and manage the information of an appliance used for every user, and there also existed the subject that management, such as the maintenance, took time. In addition, when it is attempted to determine the execution of a treatment only with or without the flow rate, it may take time to determine the execution of the treatment, and an appropriate treatment may not be performed quickly.

  The present invention has been made in view of the above circumstances, and a gas appliance management system capable of easily and quickly executing an appropriate treatment according to an appliance used and a use state by determining the appliance used. The purpose is to provide.

A gas appliance management system according to the present invention is connected to a gas supply pipe and measures a gas flow rate based on a flow rate measurement unit that measures a gas flow rate, and an instantaneous gas flow rate measured by the flow rate measurement unit. An appliance discriminating unit that discriminates an appliance that uses the gas flowing through the supply pipe, a communication unit that transmits usage status information including flow rate information relating to the gas flow rate and usage appliance information relating to the appliance, and receiving the usage status information, A management unit that selects and executes a corresponding treatment according to the gas flow rate and the appliance discrimination result.
Accordingly, it is possible to easily and quickly execute an appropriate treatment according to the used appliance and the use state by determining the used appliance.

Moreover, this invention is said gas appliance management system, Comprising: The said appliance discrimination | determination part includes what discriminate | determines an appliance using at least one of flow volume variation | change_quantity and change time as said flow volume change characteristic.
Thereby, it becomes possible to discriminate | determine the instrument which is using gas using at least one of flow volume variation | change_quantity and change time.

Further, the present invention is the gas appliance management system described above, wherein the management unit, as the corresponding measure, warns a user's home where the appliance is provided, shuts off the gas supply, answers the usage status, and neglects Alternatively, an instruction to perform an execution including at least one of a warning to a communication terminal used by a user of the appliance and a notification of at least one of usage status answers is included.
This makes it possible, for example, to warn when there is an abnormality, shut off the gas supply, answer the usage status when it is normal or abnormal, leave it when there is no particular problem, It is possible to perform various measures in the management of gas supply and gas appliances, such as warning the communication terminal used by the customer and answering the usage status.

Moreover, this invention is said gas appliance management system, Comprising: The said communication part transmits the information containing the historical information regarding the usage history of the said appliance with the said flow volume information and the said appliance usage information as said usage condition information. The management unit includes a unit that receives the usage status information and selects a countermeasure according to the usage history.
Thereby, it is possible to select and execute an appropriate treatment according to the usage history.

Moreover, this invention is said gas appliance management system, Comprising: The said management part includes what selects a response | compatibility treatment by the said instrument discrimination | determination result and the continuous use time when the said instrument is operate | moving.
This makes it possible to select and execute an appropriate treatment depending on the operation time of the instrument.

Moreover, this invention is said gas appliance management system, Comprising: The said management part contains what selects a response | compatibility treatment by the said apparatus discrimination | determination result and the flow volume at the time of the operation | movement of the said instrument.
This makes it possible to select and execute an appropriate treatment depending on the flow rate during operation of the instrument.

Further, the present invention is the gas appliance management system described above, wherein when the management unit receives a usage status inquiry from a communication terminal used by a user of the appliance, the appliance determination unit and the communication unit It includes transmitting a status confirmation request for confirming the usage status to the user home device, and receiving usage status information in response to the status verification request from the communication unit.
As a result, it is possible to select and execute an appropriate measure such as replying the usage status to the user's communication terminal, for example, by receiving usage status information from the user's home and receiving usage status information from the user's home It becomes.

  ADVANTAGE OF THE INVENTION According to this invention, the gas appliance management system which can perform the appropriate treatment according to an instrument used and a use condition easily and rapidly by discriminating the instrument currently used can be provided.

  FIG. 1 is a block diagram showing a configuration of a gas appliance management system according to an embodiment of the present invention. In the present embodiment, a configuration example of a gas appliance management system using a gas meter installed in a gas user's house or the like is shown.

  The gas appliance management system of the present embodiment is configured to include a management center device 40 that manages the gas supply path 20 and a user home device 10 that is provided in the house of the user of the gas user. The management center device 40 and the user home device 10 are connected via a communication line 42 such as a public telephone line, a mobile phone line, an optical communication line, a wired or wireless LAN, and other communication interfaces, and can receive various signals and information. Transmission and reception are possible. The communication line 42 is connected to a communication terminal 45 that is used when a user inquires about the usage status from the outside, and various signals and information can be transmitted and received between the management center device 40 and the communication terminal 45. Yes.

  The user home apparatus 10 is provided in the middle of a gas supply pipe 20 laid in a user's house or the like, and a plurality of gas appliances include an appliance A21, an appliance B22, and an appliance C23 on the downstream side of the gas supply pipe 20. It is connected. The user home device 10 is installed at a predetermined position outdoors or indoors. The number of gas appliances to be connected is not limited to the illustrated example, and is arbitrary. In addition, the user home includes not only a general residential house but also an apartment house, a store, a factory, and other various facilities.

  The user home device 10 includes an ultrasonic flow meter 11, a flow rate calculation unit 12, an appliance determination unit 13, a use determination unit 14, a control unit 15, a storage unit 16, a display unit 17, a seismic device 18, a shut-off valve 19, and a communication. The unit 41 is configured. The ultrasonic flowmeter 11 is connected in the path of the gas supply pipe 20 and, as will be described later, obtains a propagation time difference caused by the gas flow in the gas supply pipe 20 using an ultrasonic signal, and detects an instantaneous gas flow rate. To do. Based on the detected instantaneous flow rate, the flow rate calculation unit 12 calculates the gas flow rate by integrating the instantaneous flow rate, and calculates various flow rate calculations such as calculating a flow rate difference value for appliance discrimination and application discrimination, which will be described later. Is to do. The ultrasonic flow meter 11 and the flow rate calculation unit 12 realize the function of the flow rate measurement unit.

  The appliance discriminating unit 13 determines the flow rate change characteristics of the gas flow rate such as the flow rate change amount and the change time based on the stored judgment value for each appliance based on the calculated flow rate difference value, and the gas is supplied to the gas supply pipe 20. The gas appliance used when flowing is discriminated. The use discriminating unit 14 uses the appliance discriminating result by the appliance discriminating unit 13 to further determine the flow rate change characteristic of the gas flow rate such as the flow rate change amount and the change time based on the stored judgment value for each use, and the gas supply pipe 20. As a use of the gas flowing through the gas, for example, the use of the determined gas appliance is determined. The application discriminating unit 14 operates independently of the appliance discriminating unit 13, and determines the flow rate change characteristic of the gas flow rate based on the stored application-specific determination value based on the calculated flow rate difference value. You may make it discriminate | determine the use of the gas appliance currently used when the gas is flowing through the supply pipe | tube 20. FIG.

  The control unit 15 has a function of a security processing unit, and performs security processing such as warning and gas shutoff based on an instruction from the management center device 40 in addition to operation control of each part of the user home device 10. . The storage unit 16 includes flow rate information such as determination value information used for device determination and application determination, instantaneous flow rate value information measured by the ultrasonic flowmeter 11, and gas flow rate value information and flow rate difference value information calculated by the flow rate calculation unit 12. Various information used in the user home device 10 such as information, used appliance information and usage status information, and used appliance and usage status history information is stored. Here, the control unit 15, the flow rate calculation unit 12, the appliance determination unit 13, and the use determination unit 14 are configured by a processor and an operation program that constitute a microcomputer (microcomputer) and the like, and the processor executes a predetermined operation program. Each function is realized by performing corresponding processing. The storage unit 16 is configured by a memory such as a flash ROM or a RAM.

  The display unit 17 includes an LED, a liquid crystal display, and the like, and displays a gas flow rate, an operating state of the gas appliance, a warning, and the like. The seismoscope 18 detects vibration such as an earthquake and outputs a detection signal to the control unit 15. The shut-off valve 19 is connected in the path of the gas supply pipe 20 and shuts off the gas supply by closing the gas supply pipe 20 based on an instruction from the control unit 15.

  The communication unit 41 has a wired or wireless communication function, and is connected to the management center device 40 via the communication line 42. The communication unit 41 transmits flow rate information, used appliance information, and the like to the management center device 40, and receives various commands and signals such as a status confirmation request, a shut-off command, and an alarm from the management center device 40. Signals are exchanged with the management center device 40.

  The communication terminal 45 includes a mobile phone, a personal digital assistant (PDA), a personal computer (PC), a fixed phone, and the like, and has a wired or wireless communication function. The communication terminal 45 transmits various information, commands, and signals to and from the management center apparatus 40 such as transmitting a usage status inquiry signal from the user to the management center apparatus 40 and receiving response information and signals from the management center apparatus 40. It is exchanged between the two.

  The management center device 40 is configured to include a computer and the like, and realizes the function of the management unit. Based on information acquired from the user home device 10, the gas appliance used in the user home device 10 and its use A response measure is selected according to the situation, and a command or signal corresponding to the response measure such as a status confirmation request, a blocking command, or an alarm is transmitted to the user home device 10 or the communication terminal 45. By executing this command or signal transmission, an instruction to execute a countermeasure is given. The management center device 40 includes a processor and an operation program that constitute a computer or the like, and each function is realized by executing a predetermined operation program and performing corresponding processing in the processor.

  The operations of the ultrasonic flowmeter 11 and the flow rate calculation unit 12 will be described in detail. FIG. 2 is a configuration diagram showing a schematic configuration of the ultrasonic flowmeter 11.

  The ultrasonic flow meter 11 has a measurement flow path 32 having a rectangular cross section communicating with the gas supply pipe 20, and a pair of ultrasonic waves is provided on the upstream side and the downstream side of the opposite road walls of the measurement flow path 32. Transceivers 33 and 34 are arranged. These ultrasonic transmitters / receivers 33 and 34 are set so that the ultrasonic propagation path obliquely crosses the gas flow flowing through the measurement flow path 32, and the ultrasonic flow is alternately transmitted / received, so that the ultrasonic flow is sequentially transmitted and received. Propagation of ultrasonic waves in the opposite direction.

At this time, the distance between the ultrasonic transceivers 33 and 34, that is, the measurement distance is L, the angle of the ultrasonic propagation path with respect to the gas flow is φ, and the ultrasonic propagation time from the upstream to the downstream of the ultrasonic transceivers 33 and 34 is If t1, the ultrasonic propagation time from downstream to upstream is t2, and the sound velocity is C, the flow velocity V can be obtained by the following equation.
V = L / 2 cos φ ((1 / t1) − (1 / t2)) (1)
The instantaneous flow rate of the gas flow is calculated from the flow velocity V and the cross-sectional area of the measurement channel 32.

  The time interval for measuring the instantaneous flow rate can be set within a range where ultrasonic waves can be transmitted and received. Since the time to change by activation and control varies depending on the gas appliance, reducing the measurement time interval is advantageous in terms of instantaneous instrument discrimination, but shortening the measurement time interval increases battery consumption. . Further, when the measurement time interval is a two-digit order interval equivalent to the membrane type used in the conventional gas meter, it becomes difficult to judge by looking at the difference in flow rate change. Therefore, in this embodiment, when the gas appliance is not used, the periodic instantaneous flow rate is measured at intervals of 2 seconds, and the difference value is taken to determine the activation of the gas appliance. The measurement time interval can be further shortened. For example, after starting the gas appliance, control such as shortening the measurement time interval may be performed in order to increase measurement accuracy.

  Next, the operations of the appliance determination unit 13 and the application determination unit 14 will be described in detail. FIG. 3 is a characteristic diagram showing a gas flow rate characteristic for each instrument at startup, and FIG. 4 is a characteristic chart showing a flow rate difference value characteristic for each instrument at startup.

  In FIG. 3, (A) shows the flow rate change characteristic at the time of starting of the instrument A in which the gas flow rate adjustment such as a gas fan heater takes a predetermined time and the stepping motor or the like is performed via the drive source, for example, (B) The flow rate change characteristic at the time of starting of the instrument B in which flow rate adjustment such as a gas stove is manually performed instantaneously is shown.

  Therefore, as shown in FIG. 4, for example, at a predetermined unit time, as shown in (A), the appliance A counts the difference value of the instantaneous flow rate by the gas flow rate adjustment at the time of activation six times, as shown in (B). Instrument B will count once. That is, since the form of control in the gas flow rate adjustment at the time of starting and ending and at the time of output adjustment is different for each gas appliance, the count number of the difference value of the instantaneous flow rate also differs. Therefore, at the time of starting and ending the gas appliance, and at the time of output adjustment, a difference value of a predetermined amount or more is generated in the instantaneous flow rate, and the appliance and application are discriminated based on the number of times the difference value is continuously generated and the continuous generation time. It is possible.

  For example, a gas stove, a fan heater using gas combustion heat as a heat source, and a gas water heater can be identified. The gas stove has a single function for cooking and the fan heater has a single function such as for hot air heating, but the gas water heater has two functions for hot water supply and floor heating. In the floor heating, a heat medium flow path is formed on the back side of the floor, and the heat medium flowing therethrough is heated with hot water boiled by a gas water heater. And for hot water supply and floor heating, the start-up or control pattern is different, and of course there are differences in the number of occurrences and the generation time of the difference value. Therefore, when the gas appliance is a gas water heater, it can be determined whether it is for hot water supply or floor heating, based on the number of consecutive occurrences of the difference value, the continuous occurrence time, and the like. Note that the difference value may be a negative difference at the time of stopping or ending the control as well as at the time of starting or controlling.

  The appliance discriminating unit 13 stores the storage unit 16 at the time of activation of the gas appliance based on the instantaneous flow rate detected by the ultrasonic flowmeter 11 every predetermined time and the instantaneous flow rate calculated by the flow rate calculating unit 12. The flow rate change amount and the change time are determined using the determination value for determining the appliance stored in advance, and the gas appliance is determined. The use discriminating unit 14 uses the judgment value for use discriminating stored in the storage unit 16 in advance for the gas appliance discriminated by the appliance discriminating unit 13, and the flow rate change amount, change time, unit time flow rate, etc. To determine the use of the gas appliance. In addition, you may make it discriminate | determine a use directly from the difference value of instantaneous flow volume in the application determination part 14. FIG.

  Then, operation | movement of the gas appliance management system of this embodiment is demonstrated. When performing a security process or the like, an appropriate countermeasure may be different depending on the gas appliance being used. In the present embodiment, based on the gas flow rate and gas appliance information detected in the user home device 10, the management center device 40 selects the gas appliance used in the user home and the treatment status according to the usage status, and responds. A command or signal corresponding to the treatment is transmitted to the user home device 10 to execute the treatment.

  FIG. 5 is a diagram illustrating an example of signals and information transmitted and received between the management center device and the user home device in the present embodiment. 5A shows an example of signals and information transmitted by the management center device 40, and FIG. 5B shows an example of signals and information transmitted by the user home device 10. The management center device 40 includes a status confirmation request signal for confirming the gas usage status, a cutoff command signal for shutting off the gas supply, an alarm signal including warning information for warning when there is an abnormality, A signal including various instructions such as a status response signal including usage status information for answering the status is transmitted to the user home device 10. The user home device 10 is a signal (flow rate information signal, used tool information signal, history information signal, etc.) including use status information such as presence / absence of gas flow, current used tool, past used tool, and past use history. Is transmitted to the management center device 40.

  As countermeasures, various measures such as shutoff of gas supply by remote instruction, warning display (abnormal indication), warning notification, neglect, answer to usage status inquiry, and the like can be considered.

  When warning is performed, an alarm signal is transmitted from the management center device 40 to the user home device 10. In the user home device 10, based on the alarm signal received by the communication unit 41, a warning instruction signal is sent from the control unit 15 to the display unit 17, and in response to the warning instruction signal, the display unit 17 turns on an LED or turns on a liquid crystal display. Indication of abnormalities and operating status is performed by displaying characters and pictures. Moreover, you may warn using a sound etc. Further, when performing the warning, the communication terminal 45 registered by the user may be notified.

  When the gas supply is shut off, a cutoff command signal is transmitted from the management center device 40 to the user home device 10. In the user home device 10, based on the cutoff command signal received by the communication unit 41, a cutoff instruction signal is sent from the control unit 15 to the cutoff valve 19, and the cutoff valve 19 is driven in accordance with this cutoff instruction signal to supply gas. The tube 20 is closed and the gas supply is shut off.

  In addition, when a response to a usage status query from a user is made, when a usage status query is received from the communication terminal 45 or the user home device 10, a status confirmation request about the usage status is sent from the management center device 40 to the user home device 10. A signal is transmitted, and based on the gas flow rate and gas appliance information acquired from the user home device 10, a usage status response signal is transmitted from the management center device 40 to the communication terminal 45 and the user home device 10. In the communication terminal 45 and the user home device 10, based on the received usage status response signal, a character or a picture is displayed on the display unit to notify the operation state or abnormality. Moreover, you may alert | report a use condition using a sound etc.

  FIG. 6 is a flowchart showing an operation procedure of the gas appliance management system of the present embodiment. 6, (A) shows the operation of the user home device 10, and (B) shows the operation of the management center device 40.

  The user home device 10 measures the instantaneous flow rate at predetermined measurement time intervals by using the ultrasonic flow meter 11 and the flow rate calculation unit 12, and calculates an integrated value, a difference value, and the like of the instantaneous flow rate (step S11). Then, the appliance discriminating unit 13 discriminates the gas appliance being used from the flow rate change amount and the change time based on the instantaneous flow rate difference value (step S12). Further, the use discriminating unit 14 discriminates the use in the gas appliance discriminated from the flow rate change amount, the change time, the unit time flow rate, etc. (step S13).

  Next, the control unit 15 transmits usage state information such as a gas flow rate, a used instrument, and an application to the management center apparatus 40 via the communication unit 41 (step S14). And it is determined whether the communication part 41 received the instruction | indication from the management center apparatus 40 (step S15). Here, when an instruction is not received from the management center apparatus 40, the flow returns to the original process and the flow rate measurement and the instrument determination process are performed again. When an instruction is received from the management center device 40 in step S15, the control unit 15 executes corresponding measures such as warning, blocking, and answer display in accordance with the instruction (step S16).

  On the other hand, the management center device 40 determines whether or not there is a usage status inquiry from the user home device 10 or the communication terminal 45 used by the user (step S21). Here, when there is a usage status inquiry from the user, a status confirmation request signal is transmitted to the user home device 10 (step S22). If there is no usage status inquiry from the user in step S21, step S22 is skipped and the process proceeds to the next.

  Next, it is determined whether a signal including usage information is received from the user home device 10 (step S23). Here, when the usage status information is not received, the processing returns to the original processing, and the usage status inquiry and usage status information reception confirmation processing are performed. When the usage status information is received in step S23, the gas appliance used in the user's house is confirmed based on the acquired usage status information (step S24), and an appropriate countermeasure is selected (step S25). Then, an instruction signal corresponding to the selected countermeasure is transmitted to the user home device 10 (step S26).

  At the time of selection of the corresponding treatment in the management center device 40, while using or leaking the gas is determined from flow rate information such as the presence or absence of the flow rate, the gas device currently used or used in the past is confirmed based on the used device information. In the present embodiment, the appropriate countermeasure is different depending on the appliance used, and in the present embodiment, the countermeasure such as warning, blocking, and usage report is selected and executed according to the appliance being used.

  As measures to be taken depending on the appliance used, for example, if the appliance without a safety device such as a gas table stove has been used continuously for a predetermined time or longer due to forgetting to turn it off, the supply of immediate gas is cut off. To do. Further, in the case of a gas appliance provided with a safety device such as a gas fan heater, a usage status report or warning is provided. In addition, when the gas appliance such as a water heater is continuously used for a predetermined time or more, the local confirmation instruction is given or the gas is shut off, and the water pipe is closed to stop the water supply. In addition, in the case of a gas appliance that is turned on and off, such as floor heating, there is a possibility of re-combustion even if the current flow rate is zero. In this case, it is only necessary to observe for a while and confirm whether or not to use again, or to select a countermeasure such as leaving, answering the usage status, or shutting off the gas supply based on the determined usage status.

  Further, when the gas supply is cut off, it is possible to cut off when the gas flow rate is increased while maintaining the current state, or when the equipment used cannot be identified. In addition, different measures are set depending on the combination of the information on the gas appliance and the continuous use time information on which the appliance is operating, the combination of the information on the gas appliance and the flow rate information during operation of the appliance, etc. You can also

  As described above, according to the present embodiment, when the management center device 40 manages the usage status of the gas appliances at the user's home, the ultrasonic flow meter 11 and the flow rate calculation unit 12 By calculating the change time, discriminating the gas appliance used in the appliance discriminating unit 13, and using the flow rate information and the appliance information used, an appropriate treatment can be selected according to the appliance used. Accordingly, it is possible to quickly perform an appropriate treatment from the remote according to the instrument used and the state of use, and it is possible to easily and automatically check and monitor the gas usage status.

  It should be noted that the present invention is not limited to those shown in the above-described embodiments, and those skilled in the art can also make changes and applications based on the description in the specification and well-known techniques. Yes, included in the scope of protection.

  The present invention has an effect that it is possible to easily and quickly execute an appropriate treatment according to a used appliance and a use state by determining the used appliance, and a gas flow rate installed in a house or the like It is useful for a gas appliance management system for managing the use status of a gas appliance or a gas supply channel, managing a safety process, etc., a gas supply system, etc.

The block diagram which shows the structure of the gas appliance management system which concerns on embodiment of this invention. The block diagram which shows schematic structure of the ultrasonic flowmeter in this embodiment The characteristic figure which shows the gas flow rate characteristic for every appliance at the time of starting in this embodiment The characteristic view which shows the flow difference value characteristic for every appliance at the time of starting in this embodiment The figure which shows an example of the signal and information which are transmitted / received between a management center apparatus and a user home apparatus in this embodiment. The flowchart which shows the operation | movement procedure of the gas appliance management system of this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 User home apparatus 11 Ultrasonic flow meter 12 Flow rate calculation part 13 Appliance discrimination | determination part 14 Use discrimination | determination part 15 Control part (security process part)
16 storage unit 17 display unit 18 seismic device 19 shut-off valve 20 gas supply pipe 21, 22, 23 instrument 40 management center device (management unit)
41 communication unit 42 communication line 45 communication terminal

Claims (7)

A flow rate measuring unit connected to the gas supply pipe for measuring the gas flow rate;
Based on the instantaneous flow rate of the gas measured by the flow rate measuring unit, an appliance discriminating unit that discriminates an appliance that uses the gas flowing through the gas supply pipe from the flow rate change characteristic of the gas flow rate,
A communication unit for transmitting usage information including flow rate information relating to the gas flow rate and use appliance information relating to the appliance;
A management unit that receives the use status information, selects a corresponding treatment according to the gas flow rate and the appliance discrimination result, and instructs the execution;
A gas appliance management system comprising: The gas appliance management system according to claim 1,
The gas appliance management system in which the appliance discriminating unit discriminates an appliance using at least one of a flow rate change amount and a change time as the flow rate change characteristic. The gas appliance management system according to claim 1,
The management unit, as the countermeasure, warning to the user's home where the appliance is provided, shut off the gas supply, reply to the usage status, leave, or warning to the communication terminal used by the user of the appliance and A gas appliance management system that issues an execution instruction including at least one of notifications of usage status answers. The gas appliance management system according to claim 1,
The communication unit transmits, as the usage status information, information including history information about the usage history of the appliance together with the flow rate information and the appliance usage information,
The said management part is a gas appliance management system which receives the said usage condition information and selects a response | compatibility treatment according to the said usage history. The gas appliance management system according to claim 1,
The said management part is a gas appliance management system which selects a countermeasure according to the said instrument discrimination | determination result and the continuous use time when the said instrument is operate | moving. The gas appliance management system according to claim 1,
The said management part is a gas appliance management system which selects a countermeasure according to the said instrument discrimination | determination result and the flow volume at the time of operation | movement of the said instrument. The gas appliance management system according to claim 1,
The management unit, when receiving a usage status inquiry from a communication terminal used by a user of the appliance, sends a status check request for checking the usage status to the user home device having the appliance discrimination unit and the communication unit. A gas appliance management system for transmitting and receiving usage status information responding to the status confirmation request from the communication unit.

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