JP2008185485A - Method and apparatus for registering gas flow rate pattern and gas appliance identification apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and an apparatus for registering gas flow rate patterns and capable of shortening the time required to register gas flow rate patterns for gas appliance identification, save time and labor, and improving convenience and to provide a gas appliance identification apparatus. <P>SOLUTION: Production numbers of existing gas appliances, gas appliances each corresponding to the production numbers, and gas flow rate patterns corresponding to the gas appliances are related to one another in a gas flow rate pattern table for registration, and the gas flow rate pattern table for registration is previously stored in a first storage means 23-1. According to input of production numbers of gas appliances, gas appliances related to the production numbers and gas flow rate patterns corresponding to the gas appliances are extracted from the gas flow rate pattern table for registration, and the gas appliances and the gas flow rate patterns corresponding to the gas appliances are related to each other in a registered gas flow rate pattern table, and the registered gas flow rate pattern table is stored in a second storage means 101 to register gas flow rate patterns for identifying gas appliances in use. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a gas flow pattern registration method and apparatus for gas appliance discrimination and a gas appliance discrimination apparatus, and more specifically, a gas flow rate for discriminating a gas appliance in use from a gas appliance connected to a gas supply line. The present invention relates to a flow pattern registration method and apparatus for registering a pattern, and a gas appliance discriminating apparatus for determining a gas appliance in use connected to a gas supply line using the registered gas flow pattern.

  Conventionally, as a gas appliance discriminating device, for a plurality of types of gas appliances such as a gas stove, a gas fan heater, and a gas floor heater, a partial flow pattern obtained by dividing a series of gas flow patterns generated along with combustion control, for example, ignition A device that associates a flow rate pattern table that is classified for each control step, such as a time, an initial transition period thereafter, and a stable period in which the flow rate is stabilized, and a combination of a plurality of types of gas appliances and corresponding partial flow rate patterns. The apparatus and the apparatus determination means which extracts the partial flow pattern which matches the gas flow pattern detected by the gas supply line from the flow pattern table, and extracts the gas apparatus which matches the combination of the extracted partial flow patterns from the apparatus table Are registered when the appliance determination means extracts a specific gas appliance, and the specific gas Registered instrument table having a partial flow pattern and a detected gas flow rate for the instrument for each control step, and a partial flow pattern matching the gas flow pattern detected in the gas supply line is extracted from the flow pattern table. A combination of flow rate patterns and a registered device determination unit that extracts a gas device that matches the gas flow rate of each control step from a registered device table has been proposed (see, for example, Patent Document 1 and Patent Document 2).

The result of discrimination by the gas appliance discriminating device is used for an optimal security function and other services, for example, integration of gas usage by appliance.
Japanese Patent Application No. 2003-148728 Japanese Patent Application No. 2003-149019

  In the gas appliance discriminating apparatus described above, the registered appliance table in which the gas flow rate pattern for discriminating the gas appliance in use connected to the gas supply line is registered is created by extracting the specific gas appliance by the appliance judging means. It has come to be. Specifically, in order to register a table for appliance discrimination, it is necessary to operate only a gas appliance such as a gas stove that performs registration to learn a flow rate pattern. Therefore, when registering about a gas fan heater and a gas floor heater other than a gas stove, the same operation | work is required and there exists a problem that enormous time and effort are required.

  In addition, a function for registering gas flow patterns is built into the gas meter, but considering the processing capacity of the gas meter, a series of gas flow patterns generated in accordance with combustion control were divided for multiple types of gas appliances. It was difficult to provide a gas meter with a flow rate pattern table in which partial flow rate patterns were classified for each control step and to register a gas flow rate pattern for discrimination in the gas meter using the gas flow rate table. .

  Therefore, in view of the above-described problems, the present invention reduces the time required for registering a gas flow pattern for gas appliance determination, saves labor, and improves the convenience of gas flow pattern registration method and apparatus, and It is an object of the present invention to provide a gas appliance discriminating apparatus that discriminates a gas appliance using a gas flow rate pattern registered by the method and apparatus.

  According to a first aspect of the present invention, there is provided a gas flow rate pattern registration method for identifying a gas appliance, wherein a gas flow rate pattern for identifying a gas appliance in use from a gas appliance connected to a gas supply line is determined. A gas flow pattern registration method for identifying gas appliances for registration, in which a product number of an existing gas appliance is associated with a gas appliance corresponding to each product number and a gas flow pattern corresponding to the gas appliance The gas flow rate pattern table is stored in advance in the first storage means 23-1, and the gas appliance associated with the product number is input in response to the input of the product number of the gas appliance connected to the gas supply line. And a gas flow pattern corresponding to the gas appliance is extracted from the registration gas flow pattern table, and the extracted gas appliance and gas corresponding to the gas appliance are extracted. A registered gas flow rate pattern table associated with the quantity pattern is stored in the second storage means 101 and used in comparison with the gas flow rate pattern of the gas appliance in use detected based on the gas flow rate value detected by the gas meter. A gas flow rate pattern for discriminating a gas appliance inside is registered.

  According to the first aspect of the present invention, the registration gas flow rate pattern table in which the product numbers of the existing gas appliances, the gas appliances corresponding to the respective product numbers, and the gas flow patterns corresponding to the gas appliances are associated with each other is stored. 1 is stored in advance in the storage means 23-1, and in accordance with the input of the product number of the gas appliance connected to the gas supply line, the gas appliance associated with the product number and the gas corresponding to the gas appliance A flow rate pattern is extracted from the registration gas flow rate pattern table, a registered gas flow rate pattern table in which the extracted gas appliance and a gas flow rate pattern corresponding to the gas appliance are associated with each other is stored in the second storage unit 101, A gas meter for distinguishing the gas appliance in use in comparison with the gas flow pattern of the gas appliance in use detected based on the gas flow rate value detected in the gas meter. Since the flow rate pattern is registered, when registering the gas flow rate pattern of the gas appliance connected to the gas supply line, the product can be used without connecting the gas appliance to the gas supply line and actually putting the gas appliance into use. By simply inputting the number, the gas appliance associated with the input product number and the gas flow pattern corresponding to the gas appliance are extracted from the registration gas flow pattern table, and the extracted gas appliance and the gas appliance are extracted. A registered gas flow rate pattern table that correlates the corresponding gas flow rate pattern is stored in the second storage means, and compared with the gas flow rate pattern of the gas appliance in use detected based on the gas flow rate value detected by the gas meter. A gas flow rate pattern for discriminating the gas appliance in use can be registered.

  A gas appliance discrimination gas flow rate pattern registration method apparatus according to claim 2 for solving the above-mentioned problem, a gas flow rate pattern for discriminating a gas appliance in use from a gas appliance connected to a gas supply line. A gas flow pattern registration device for gas appliance identification for registration, as shown in the block diagram of FIG. 1, corresponding to the product number of an existing gas appliance, the gas appliance corresponding to each product number, and the gas appliance A first storage unit 23-1 storing a registration gas flow rate pattern table associated with a gas flow rate pattern to be input, and an input unit 24 for inputting a product number of a gas appliance connected to the gas supply line. In response to the input of the product number by the input means, the gas appliance associated with the product number and the gas flow rate pattern corresponding to the gas appliance are registered. A gas flow rate pattern extracting unit 23-2 that extracts from the gas flow rate pattern table for use, and a registered gas flow rate pattern table that associates the gas appliance extracted by the extraction unit with the gas flow rate pattern corresponding to the gas appliance. And storing a gas flow rate pattern for discriminating the gas appliance in use in comparison with the gas flow pattern of the gas appliance in use detected based on the gas flow rate value detected by the gas meter. It is characterized by that.

  According to the invention described in claim 2, the registration gas flow rate pattern table in which the product numbers of the existing gas appliances, the gas appliances corresponding to the respective product numbers, and the gas flow rate patterns corresponding to the gas appliances are associated with each other. When the product number of the gas appliance connected to the gas supply line is input by the input means 24 and stored in advance in the storage unit 23-1, the gas appliance associated with the product number and The gas flow pattern corresponding to the gas appliance is extracted from the gas flow pattern pattern table for registration stored in advance in the first storage means 123-1, and the extracted gas appliance and the gas flow pattern corresponding to the gas appliance are associated with each other. The registered gas flow pattern table attached is stored in the second storage means 101, and the gas in use detected based on the gas flow value detected by the gas meter Since the gas flow pattern for identifying the gas appliance in use is registered in comparison with the gas flow pattern of the tool, when registering the gas flow pattern of the gas appliance connected to the gas supply line, the gas supply line By simply inputting the product number with the input means 24 without connecting the gas appliance and actually putting the gas appliance into use, the gas appliance associated with the input product number and the gas appliance are supported. A gas flow rate pattern is extracted from the registration gas flow rate pattern table, and a registered gas flow rate pattern table in which the extracted gas appliance is associated with a gas flow rate pattern corresponding to the gas appliance is stored in the second storage unit 101; Compare the gas flow pattern of the gas appliance in use detected based on the gas flow rate detected by the gas meter with the gas appliance in use. It can be registered gas flow pattern to another.

  A gas appliance discrimination gas flow pattern registration apparatus according to claim 3 is the gas appliance discrimination gas flow pattern registration apparatus according to claim 2, wherein the first storage means 23-1, the input means 24, The gas flow rate pattern extracting means 23-2 and the second storage means 101 are provided in a device connected to the gas meter via a signal line and configured separately from the gas meter, and from the gas meter via the signal line. A gas flow rate pattern for discriminating the gas appliance in use is registered in comparison with the gas flow rate pattern of the gas appliance in use detected based on the gas flow rate value input in the above.

  According to the third aspect of the present invention, the first storage means 23-1, the input means 24, and the gas flow rate pattern extraction are provided in a device connected to the gas meter via the signal line and configured separately from the gas meter. Since the means 23-2 is provided, all of the registration gas flow rate pattern table and the storage (registration) of the registered gas flow rate pattern table are performed in an apparatus configured separately from the gas meter, and the gas meter is detected by the gas meter. It is only necessary to output the gas flow rate value through the communication line.

  A gas appliance discrimination gas flow pattern registration apparatus according to claim 4 is the gas appliance discrimination gas flow pattern registration apparatus according to claim 2, wherein the first storage means 23-1, the input means 24, The gas flow rate pattern extracting means 23-2 is connected to the gas meter via a communication line and is provided in a device configured separately from the gas meter, and the second storage means 101 is provided in the gas meter and is detected by the gas meter. A gas flow rate pattern for discriminating the gas appliance in use in the meter is registered in contrast to the gas flow rate pattern of the gas appliance in use detected based on the gas flow rate value.

  According to the fourth aspect of the present invention, the first storage means 23-1, the input means 24, and the gas flow rate pattern extraction are provided in a device connected to the gas meter via the communication line and configured separately from the gas meter. Means 23-2, and the second storage means 101 is provided in the gas meter. Therefore, the registration gas flow pattern table that requires a large storage capacity is stored, and the registration gas flow pattern table is used. The gas appliance connected to the gas supply line according to the input of the product number and the gas flow rate pattern corresponding to the gas appliance are extracted in a device separate from the gas meter, and the gas appliance input via the communication line Storage (registration) of the registered gas flow rate pattern table corresponding to the gas flow rate pattern corresponding to the gas appliance can be performed on the gas meter side, before the gas meter detects it. The determination of the gas appliance in use carried out in comparison with the gas flow pattern of the gas appliance in use is detected on the basis of the gas flow rate value made within the meter.

  A gas appliance discrimination gas flow pattern registration apparatus according to claim 5 is the gas appliance discrimination gas flow pattern registration apparatus according to any one of claims 2 to 4, wherein the input means 24 is a code reading means 25; The second storage means 101 includes a gas appliance corresponding to the product number read by the code reading means when the code reading means 25 reads a product number not stored in the registration gas flow rate pattern table. A registered gas flow rate pattern table associated with a gas flow rate pattern corresponding to the gas appliance is additionally stored.

  According to the fifth aspect of the present invention, the input means 24 is the code reading means 25, and when the code reading means 25 as the input means 24 reads a product number that is not stored in the registration gas flow rate pattern table, the code Since the second storage unit 101 additionally stores a registered gas flow rate pattern table in which the gas appliance corresponding to the product number read by the reading unit and the gas flow rate pattern corresponding to the gas appliance are associated with each other, the existing gas appliance is stored. Even when other gas appliances are connected to the gas supply line, a gas flow rate pattern for gas appliance discrimination can be registered.

  A gas appliance discriminating apparatus according to claim 6 is a gas appliance discriminating apparatus that discriminates a gas appliance in use from gas appliances connected to a gas supply line, and as shown in the block diagram of FIG. A first storage means 23-1 preliminarily storing a registration gas flow rate pattern table in which a product number of a gas appliance, a gas appliance corresponding to each product number, and a gas flow rate pattern corresponding to the gas appliance are associated in advance; , An input means 24 for inputting a product number of a gas appliance connected to the gas supply line, and a gas appliance and the gas associated with the product number according to the input of the product number by the input means A gas flow rate pattern extraction means 23-2 for extracting a gas flow rate pattern corresponding to the appliance from the registration gas flow rate pattern table, and a gas appliance extracted by the extraction means, Second storage means 101 for storing a registered gas flow rate pattern table in which a gas flow rate pattern corresponding to the gas appliance is associated, and a gas flow rate of the gas appliance in use detected based on the gas flow rate value detected by the gas meter A gas flow rate pattern detecting unit 102 for detecting a pattern, and a gas flow rate pattern matching the gas flow rate pattern detected by the gas flow rate pattern detecting unit 102 is stored in the second storage unit 101. And a gas appliance discriminating means 103 for extracting a gas appliance associated with the gas flow rate pattern.

  According to the sixth aspect of the present invention, the registration gas flow rate pattern table in which the product numbers of the existing gas appliances, the gas appliances corresponding to the respective product numbers, and the gas flow rate patterns corresponding to the gas appliances are associated with each other is stored. When the product number of the gas appliance connected to the gas supply line is input by the input means 24 and stored in advance in the storage unit 23-1, the gas appliance associated with the product number and The gas flow pattern corresponding to the gas appliance is extracted from the gas flow pattern pattern table for registration stored in the first storage means 23-1, and the extracted gas appliance and the gas flow pattern corresponding to the gas appliance are associated with each other. The registered gas flow pattern table attached is stored in the second storage means 101, and the gas appliance in use detected based on the gas flow value detected by the gas meter A gas flow rate pattern is detected by the gas flow rate pattern detection means 102, a gas flow rate pattern matching the detected gas flow rate pattern is extracted from a registered gas flow rate pattern table stored in the second storage means 101, and the gas flow rate pattern is extracted. The gas appliance associated with is extracted and the gas appliance in use is identified, so when registering the gas flow pattern of the gas appliance connected to the gas supply line, connect the gas appliance to the gas supply line. The gas appliance associated with the product number input by the input unit 24 and the gas flow rate corresponding to the gas appliance can be simply input by the input unit 24 without actually putting the gas appliance in use. A pattern is extracted from the registration gas flow rate pattern table, and the extracted gas appliance and the gas appliance corresponding to the gas appliance are extracted. A registered gas flow rate pattern table associated with the flow rate pattern is stored in the second storage means, and is used in comparison with the gas flow rate pattern of the gas appliance in use detected based on the gas flow rate value detected by the gas meter. A gas appliance can be identified.

  The gas appliance discriminating apparatus according to claim 7 is the gas appliance discriminating apparatus according to claim 6, wherein the first storage means 23-1, the input means 24, the gas flow rate pattern extracting means 23-2, The second storage means 101, the gas flow rate pattern detection means 102, and the gas appliance discrimination means 103 are provided in a device connected to the gas meter via a signal line and configured separately from the gas meter. It is characterized by being.

  According to the seventh aspect of the present invention, the first storage means 23-1, the input means 24, and the gas flow rate pattern extraction are provided in a device connected to the gas meter via the signal line and configured separately from the gas meter. Since the means 23-2, the second storage means 101, the gas flow rate pattern detection means 102, and the gas appliance discrimination means 103 are provided, the registration gas flow rate pattern table and registration that require a large storage capacity Storing the gas flow rate pattern table, detecting the gas flow rate pattern of the gas appliance in use detected based on the gas flow rate value detected by the gas meter, and registering the gas flow rate pattern matching the detected gas flow rate pattern from the registered gas flow rate pattern table All of the extraction and extraction of the gas appliances associated with the gas flow pattern are performed in an apparatus configured separately from the gas meter. There, the gas meter only needs to output via a signal line of the gas flow rate value detected in the gas meter.

  The gas appliance discriminating apparatus according to claim 8 is the gas appliance discriminating apparatus according to claim 6, wherein the first storage means 23-1, the input means 24, and the gas flow rate pattern extracting means 23-2 are provided. The second storage means 101, the gas gas flow rate pattern detection means 102, and the gas appliance discrimination means 103 are provided in a device connected to the gas meter via a communication line and configured separately from the gas meter. It is provided in the inside.

  According to the eighth aspect of the present invention, the first storage means 23-1, the input means 24, and the gas flow rate pattern extraction are provided in a device connected to the gas meter via the communication line and configured separately from the gas meter. And a second storage means 101, a gas flow rate pattern detection means 102, and a gas appliance determination means 103 are provided in the gas meter, so that a registration gas flow rate pattern requiring a large storage capacity is provided. Storage of the table, extraction of the gas flow pattern corresponding to the gas appliance connected to the gas supply line corresponding to the input of the product number using the gas flow pattern table for registration and the gas appliance, and the device separate from the gas meter Storing a registered gas flow rate pattern table in which a gas appliance input via a communication line and a gas flow rate pattern corresponding to the gas appliance are associated with each other. Detection of the gas flow pattern of the gas appliance in use detected based on the gas flow value detected by the meter, extraction of the gas flow pattern matching the detected gas flow pattern from the registered gas flow pattern table, and the gas flow pattern The associated gas appliance can be extracted (discriminated) on the gas meter side.

  According to invention of Claim 1, when registering the gas flow rate pattern of the gas appliance connected to a gas supply line, connecting the gas appliance to a gas supply line and making the said gas appliance actually use condition The gas appliance associated with the input product number and the gas flow pattern corresponding to the gas appliance are extracted from the registration gas flow pattern table, and the extracted gas appliance and the gas appliance A registered gas flow rate pattern table in which a gas flow rate pattern corresponding to a gas appliance is associated is stored in the second storage means, and a gas flow rate pattern of the gas appliance in use detected based on a gas flow rate value detected by a gas meter; In contrast, the gas flow rate pattern for discriminating the gas appliance in use can be registered. Eliminates the need as well as reduce the time required to register a turn, it is possible to provide a gas flow pattern registration method with improved convenience.

  According to invention of Claim 2, when registering the gas flow rate pattern of the gas appliance connected to a gas supply line, connecting the gas appliance to a gas supply line and making the said gas appliance actually use condition Instead, by simply inputting the product number with the input means, the gas appliance associated with the product number input with the input means and the gas flow rate pattern corresponding to the gas appliance are extracted from the registration gas flow rate pattern table, A registered gas flow rate pattern table in which the extracted gas appliance and a gas flow rate pattern corresponding to the gas appliance are associated is stored in the second storage means, and the gas in use detected based on the gas flow rate value detected by the gas meter The gas flow rate pattern can be registered to identify the gas device in use in comparison with the gas flow rate pattern of the device. Eliminates the need as well as reduce the time required to register the gas flow pattern for the determination, it is possible to provide a gas flow pattern registration device with improved convenience.

  According to the third aspect of the present invention, the registration gas flow rate pattern table and the storage (registration) of the registered gas flow rate pattern table are all performed in an apparatus configured separately from the gas meter, and the gas meter detects the gas detected by the gas meter. Since it is only necessary to output the flow rate value via the communication line, it is not necessary for the gas meter to have either the registration gas flow rate pattern table or the registered gas flow rate pattern table nor to perform processing for that purpose.

  According to the fourth aspect of the present invention, the gas connected to the gas supply line according to the storage of the registration gas flow rate pattern table requiring a large storage capacity and the input of the product number using the registration gas flow rate pattern table. The gas flow pattern corresponding to the gas instrument is extracted in a separate device from the gas meter, and the gas instrument input via the communication line is associated with the gas flow pattern corresponding to the gas instrument. The gas flow pattern table can be stored (registered) on the gas meter side, and the discrimination of the used gas appliance is performed in comparison with the gas flow pattern of the used gas appliance detected based on the gas flow value detected by the gas meter. Because it can be done in the inside, a large-capacity gas meter is provided with a registration gas flow rate pattern table or a registration process is performed. DOO does not need gas meter, it is possible to determine a gas appliance in use by using the gas flow pattern table registered in the gas meter side.

  According to the invention described in claim 5, even when a gas appliance other than the existing gas appliance is connected to the gas supply line, the time required for registering the gas flow rate pattern is shortened and labor is saved. , Can improve convenience.

  According to invention of Claim 6, when registering the gas flow rate pattern of the gas appliance connected to a gas supply line, connecting the gas appliance to a gas supply line and making the said gas appliance actually use condition Instead, by simply inputting the product number with the input means, the gas appliance associated with the product number input with the input means and the gas flow rate pattern corresponding to the gas appliance are extracted from the registration gas flow rate pattern table, A registered gas flow rate pattern table in which the extracted gas appliance and a gas flow rate pattern corresponding to the gas appliance are associated is stored in the second storage means, and the gas in use detected based on the gas flow rate value detected by the gas meter Since the gas appliance in use can be discriminated against the gas flow pattern of the appliance, the gas flow pattern for gas appliance discrimination Eliminates the need as well as reduce the time required to record, it is possible to provide a gas appliance determination device with improved convenience.

  According to the seventh aspect of the present invention, the registration gas flow rate pattern table and the registration gas flow rate pattern table that require a large storage capacity are stored, and the in-use gas appliance detected based on the gas flow rate value detected by the gas meter. Gas flow pattern detection, gas flow pattern matching with the detected gas flow pattern, extraction from the registered gas flow pattern table and extraction of gas appliances associated with the gas flow pattern are all configured separately from the gas meter. Since the gas meter only needs to output the gas flow rate value detected by the gas meter via the signal line, the gas meter can have both the registration gas flow rate pattern table and the registered gas flow rate pattern table. Without registering gas flow patterns and identifying gas appliances using them There is no need to carry out even treatment for.

  According to the invention described in claim 8, the gas connected to the gas supply line according to the storage of the registration gas flow rate pattern table requiring a large storage capacity and the input of the product number using the registration gas flow rate pattern table Extraction of gas flow pattern corresponding to the instrument and the gas instrument is performed in a device separate from the gas meter, and the gas instrument input via the communication line is associated with the gas flow pattern corresponding to the gas instrument. Storing the gas flow rate pattern table, detecting the gas flow rate pattern of the gas appliance in use detected based on the gas flow rate value detected by the gas meter, and registering the gas flow rate pattern matching the detected gas flow rate pattern from the registered gas flow rate pattern table Extraction and extraction (discrimination) of gas appliances associated with the gas flow pattern can be performed on the gas meter side. Because, without placing a heavy burden on the gas meter, it is possible to perform the processing to determine the gas appliance to the gas meter.

  Hereinafter, an embodiment of a gas appliance discriminating apparatus according to the present invention will be described with reference to the drawings.

  FIG. 2 is a block diagram showing an electrical schematic configuration of the gas appliance discriminating apparatus according to the first embodiment. In the present embodiment, the gas appliance discriminating apparatus is configured separately from the gas meter 1 and the gas meter, and is connected to the gas meter 1 via the communication line L and is installed in the house H, for example, in a kitchen or the like. And a flow rate display device 2. The gas appliance integrated flow rate display device 2 provides services such as displaying gas usage by gas appliance, which will be described in detail later.

  In the figure, a gas meter 1 integrates and displays the amount of gas supplied to gas appliances such as a gas stove 4a, gas fan heater 4b, and gas floor heater 4c in a house 4 through a supply pipe 3 as an integrated gas usage amount. Therefore, an instantaneous gas flow rate is measured on the basis of a gas flow rate detection unit 11 provided in the gas flow path of the supply pipe 3 and a flow rate detection signal from the gas flow rate detection unit 11, and obtained by the measurement. And a gas meter control unit 13 that integrates and measures the instantaneous gas flow rate value and displays it on the display unit 12. The gas meter control unit 13 is realized by, for example, a microcomputer in which a control program is installed. Accordingly, the battery 14 is connected to the gas meter controller 13 as an operating power source.

  Further, the gas meter 1 includes a communication unit 15 that transmits an instantaneous gas flow rate value obtained by measurement based on a flow rate detection signal from the gas flow rate detection unit 11 to the integrated flow rate display device 2 for each gas appliance via a signal line L. Have In addition, the gas meter 1 is provided with various sensors and actuators in addition to the above, but the illustration and description are omitted because they are not directly related to the present invention. .

  The gas flow rate detection unit 11 in the present embodiment is not a membrane type flow meter that outputs a pulse signal when a certain volume of gas widely used in conventional gas meters flows, but an instantaneous gas flow rate. This is a flow rate measuring means that can be detected. For example, an ultrasonic flowmeter that sends ultrasonic waves bidirectionally along the gas flow path, detects the gas flow velocity from each propagation time, and outputs an instantaneous gas flow rate signal from the relationship with the cross-sectional area of the gas piping is preferable. . Other than that, there are fluidic meters that generate Karman vortices in the gas flow and detect the flow velocity from the vibration frequency, and hot-wire flow meters that detect changes in the temperature distribution from the hot wire according to the gas flow rate. Also good.

  By using a gas flow meter that can detect the instantaneous gas flow rate as described above, the waveform of the gas flow rate with respect to time can be determined to such an extent that the gas appliance can be determined based on the gas flow rate pattern. More accurate detection is possible.

  In the figure, an integrated flow rate display device 2 for each gas appliance obtains an instantaneous gas flow rate value that the gas meter 1 transmits via a signal line L, and is using a gas appliance that is connected to a gas pipe in the house H. This is for displaying the integrated flow rate by gas appliance, which is determined from the change in flow rate and integrating the gas flow rate by gas appliance, and is connected to the communication unit 15 of the gas meter 1 via the signal line L. The communication unit 21 that receives the gas flow rate value transmitted from the gas meter 1, the gas flow rate value received by the communication unit 21, and the used gas appliance based on the gas flow rate pattern that is a change with time of the captured gas flow rate value For example, for each of the determined gas appliances, the acquired gas flow rate value is integrated, and the control unit 23 for displaying the integrated flow rate for each gas appliance on the display unit 22, and for input to the control unit 23, for example. And an input unit 24 of the touch panel type. The control unit 23 is realized by, for example, a microcomputer in which a control program is installed, and includes a ROM that stores a control program and data, a RAM that temporarily stores data, and a CPU that executes the control program.

  The gas appliance integrated flow rate display device 2 has two operation modes: a normal mode and a registration mode that is entered only when designated by a specific key input from the input unit 24. In the registration mode, the gas appliance connected to the gas supply line is registered using a table prepared in advance, and in the normal mode, the used gas appliance is discriminated among the registered gas appliances. Accumulate the gas flow rate. In order to execute these two operation modes, the integrated flow rate display device 2 for each gas appliance is preliminarily provided with a registration gas flow rate pattern table in an electrically rewritable ROM in the control unit 23, It has a registered gas flow rate pattern table created each time it is registered, and a gas flow rate integrating unit for each gas device created corresponding to the registered gas device.

  The registration gas flow rate pattern table is used to create a registration gas flow rate pattern table. As shown in FIG. 3, an existing gas appliance that may be installed is attached to each product. Among the product numbers, the product number related to the model is associated with the gas appliance corresponding to the product number and the gas flow rate pattern corresponding to the gas appliance, and is electrically rewritten by the control unit 23. It is stored in advance in a registration gas flow rate pattern table area as the first storage means 23-1 prepared in advance in a possible ROM. For gas appliances, codes for each appliance such as gas stove, gas fan heater, gas floor heater, etc. are allocated. The gas flow rate pattern includes, for example, a gas flow rate value from ignition to a steady state and a gas flow rate value in the steady state.

  The registered gas flow pattern table includes a gas appliance corresponding to the product number extracted from the registration gas flow pattern table of FIG. 3 based on the product number of the installed gas appliance, and a gas flow pattern corresponding to the gas appliance. The controller 23 is prepared by storing in a registered gas flow rate pattern table area as the second storage means 101 prepared in advance in the electrically rewritable ROM included in the controller 23, as shown in FIG. About the installed gas appliance, the installed gas appliance and the gas flow rate pattern corresponding to the said gas appliance are matched. When a plurality of gas appliances of the same type are installed, serial numbers are automatically assigned to the gas appliances so that they can be distinguished from each other.

  As described above, the registered gas flow rate pattern table is based on the product number of the gas appliance to be installed, and the existing gas appliance that may be installed is the model number among the product numbers assigned to each product. The gas appliance associated with the product number of the gas appliance from the registration gas flow rate pattern table in which the product number related to the gas appliance corresponding to the product number and the gas flow pattern corresponding to the gas appliance are associated with each other. A gas flow rate pattern corresponding to the gas appliance is extracted, and this is registered gas flow rate pattern table area as the second storage means 101 prepared in advance in an electrically rewritable ROM included in the control unit 23. It is not necessary to detect the gas flow rate that actually flows in the installed gas appliance and obtain the gas flow pattern. Registration of the gas flow pattern of the gas appliance can easily do it in a short period of time was.

  Each time the gas appliance is registered in the registered gas flow rate pattern table, the gas flow rate integration unit for each gas appliance corresponds to the gas flow integration unit area prepared in advance in the electrically rewritable ROM. As shown in FIG. 5, it comprises a gas appliance and a gas flow rate integration unit corresponding to the gas appliance.

  In the integrated flow rate display device 2 by gas appliance, when the registration mode is designated by the operation of the switch for selecting the registration mode of the input unit 24, the product number is input by the numeric keypad switch of the input unit 24. The unit 23 extracts the gas appliance associated with the product number from the input product number and the gas flow rate pattern corresponding to the gas appliance from the registration gas flow pattern table, and the extracted gas appliance and the gas appliance are extracted. The registered gas flow rate pattern table in which the corresponding gas flow rate pattern is associated is stored in the electrically rewritable ROM in the control unit 23 in the registered gas flow rate pattern table area prepared in advance as the second storage unit 101. sign up.

  After the necessary registration, when the normal mode is designated by the operation of the switch for selecting the normal mode of the input unit 24, the control unit 23 takes in the gas flow rate value from the gas meter 1, and the gas flow rate value for a certain time Is temporarily stored in a memory for storing the gas, and when it is determined that the use of the gas appliance is started based on the gas flow value for a predetermined time temporarily stored in the memory, the gas flow value from the ignition to the steady state is determined. The gas flow rate pattern matching the gas flow rate pattern is extracted from the registered gas flow rate pattern table, and the gas appliance corresponding to the extracted gas flow rate pattern is extracted to discriminate the gas appliance. The temporary storage memory is formed in the RAM in the control unit 23.

  When the gas appliance is determined, the gas appliance corresponding to the determined gas appliance among the gas flow rate integrating units prepared for each gas appliance corresponding to the gas appliance registered in the registered gas flow pattern table. The other gas flow rate integrating unit sequentially integrates the integrated value of the gas flow rate value stored in the temporary storage memory up to the above determination and the gas flow rate value to be taken in thereafter into the integrated value of this integrating unit. The gas flow rate value for taking in the gas flow rate value from the gas meter 1 is temporarily stored in the memory for a certain period of time thereafter, and the stored gas flow rate value does not match the steady state value of the registered gas flow rate pattern table. When the use of the gas appliance ends, the integration of the gas flow rate value in the gas appliance-specific gas flow rate integration unit corresponding to the gas appliance is stopped.

  The schematic configuration and operation of the gas appliance discriminating device have been described above. Subsequently, in the control 23 of the gas appliance integrated flow rate display device 2, the processing performed by the CPU according to the program stored in the ROM is shown in FIGS. The details will be described with reference to FIG.

  As shown in the flowchart of FIG. 6, the CPU of the control unit 23 starts its operation when a power supply (not shown) is turned on, and when the registration mode is selected by the switch operation of the input unit 24 (when step S1 is Y). The registered gas flow rate pattern table creation process for creating the registered gas flow rate pattern table is performed (step S2). Otherwise (when step S1 is N), the normal mode process is performed (step S3).

  In the registered gas flow rate pattern table creation process, as shown in the flowchart of FIG. 7, the input of the numeric keypad by the operation of the numeric keypad of the input unit 24 or the end switch operation of the registration mode is waited (step S21a, Step S21b). If there is a numeric keypad input (when step S21a is Y) and the input number is the product number of the gas appliance to be installed (when step S23 is Y), the registration number prepared in advance in FIG. It is determined whether there is a product number that matches the input product number in the gas flow rate pattern table (step S24). Note that the number input by the numeric keypad operation is displayed on the display unit 22. When there is a product number that matches the input product number in the registration gas flow rate pattern table (when step S24 is Y), a gas appliance associated with the product number in the registration gas flow rate pattern table and The gas flow rate pattern corresponding to the gas appliance is extracted (step S25), and the extracted gas appliance and the gas flow rate pattern corresponding to the gas appliance are added as the gas flow pattern of the installed gas appliance and registered in FIG. A gas flow pattern table is created (step 26). By this processing, the CPU of the control unit 23 registers the gas appliance associated with the product number and the gas flow rate pattern corresponding to the gas appliance according to the input of the product number by the input unit 24. It functions as the gas flow rate pattern extracting means 23-2 that extracts from the gas.

  When the number of digits of the numeric keypad input from the input unit 24 is excessive or insufficient and it is not a product number (when step S22 is N), an error display is displayed on the display unit 22 (step S27), and the next numeric keypad input is awaited. . Also, when the product number that matches the input product number is not in the registration gas flow rate pattern table (when step S24 is N), an error is displayed on the display unit 22 (step S27), and the next numeric keypad is displayed. Wait for input. When the registration mode end switch operation is performed (when step S21b is Y), the process returns to the original flowchart of FIG.

  Next, normal mode processing will be described with reference to the flowchart of FIG. The control unit 23 acquires the gas flow rate value sent from the gas meter 1 via the signal line L, and stores it in a temporary storage memory that stores the gas flow rate value for a fixed time (step S21). Each time the gas flow rate value is stored in the temporary storage memory, it is determined whether or not the gas appliance in use has been determined (step S22). When there is a discriminated gas appliance (when step S22 is Y), based on the gas flow rate value stored in the temporary storage memory, the accumulated gas flow for the discriminating gas appliance is calculated for the gas appliance. After being assigned and performed by the gas appliance specific flow rate integrating unit (step S23), the process returns to step S21 to acquire the next gas flow rate value from the gas meter 1.

  If the gas appliance in use is not discriminated when the gas flow night value is acquired (step S22 is N), the acquired gas flow rate value is stored in the temporary storage memory (step S24). The gas flow rate pattern based on the flow rate value for a fixed time stored in the temporary storage memory is compared with the gas flow rate pattern in the registered gas flow rate pattern table for matching (step S24). As a result of the comparison, when there is a gas flow rate pattern to be matched (when step S25 is Y), the gas flow rate by unit for gas device assigned to the gas device corresponding to the gas flow rate pattern to be matched is temporarily stored. After integrating the integrated value of the gas flow rate value corresponding to the matched gas flow rate pattern in the storage memory (step S26), the process returns to step S21 to acquire the next gas flow rate value from the gas meter 1. Through the above processing, the CPU of the control unit 23 detects the gas flow rate pattern of the gas appliance in use detected based on the gas flow rate value detected by the gas meter by the gas flow rate pattern detection unit 102 and the gas flow rate pattern detection unit 102. A gas appliance discriminating unit that extracts a gas flow rate pattern that matches a gas flow rate pattern from the registered gas flow rate pattern table stored in the second storage unit 101 and extracts a gas appliance associated with the gas flow rate pattern. 103 is functioning.

  In addition, when the use gas appliance is discriminated, use of another gas appliance may be considered. In order to be able to cope with such a case, the gas flow rate pattern based on the remainder obtained by subtracting the flow rate value in the steady state of the gas appliance determined from the gas flow rate value stored in the temporary storage memory and the registered gas A gas appliance that has been newly used can be determined by matching with a gas flow rate pattern in the flow rate pattern table.

  Further, when two or more gas appliances are used, the acquired gas flow rate value is distributed and integrated according to the steady gas flow rate of each gas appliance.

  Furthermore, when one of a plurality of gas appliances in use ends use, a change appears in the acquired gas flow rate value, and the change corresponds to the steady state flow rate of the gas appliance that has ended use. By matching the flow rate value change pattern with the gas flow rate pattern in the registered gas flow rate pattern table, it is possible to determine the gas appliance that has been used.

  In the above-described embodiment, the product number when registering the installed gas appliance is input by the numeric keypad operation on the input unit 24, but the product number information is given to the gas appliance by a barcode or an IC tag. In this case, instead of the input unit 24 as indicated by a broken line in FIG. 2, a reading input unit 25 including a data reader that reads data from a barcode or an IC tag may be provided. In the case where such a reading input unit 25 is provided, it is possible to prevent an incorrect product number from being erroneously input during registration and an incorrect product number from being registered.

  Further, when such a reading input unit 25 is provided, not only the product number but also the gas appliance corresponding to the product number and the gas flow rate pattern information corresponding to the gas appliance are recorded on the barcode or the IC tag. For the gas appliances of product numbers not stored in the registration gas flow rate pattern table, the gas appliance read together with the product number from the barcode or IC tag by the reading input unit 25 and the gas corresponding to the gas appliance A registered gas flow rate pattern table associated with the flow rate pattern can be additionally stored.

  For a gas appliance having a product number not stored in the registration gas flow pattern table, a method for adding the gas flow pattern of the gas appliance to the registration gas flow pattern table is an external interface to the integrated flow rate display device 2 for each gas appliance. If the contents of the registration gas flow rate pattern table are newly updated based on the data obtained through this interface, new product gas appliances that are not in the prepared table can be dealt with at any time.

  In the first embodiment described above, the gas meter 1 only sends out the gas flow rate value, the registration of the installed gas appliance, the discrimination of the gas appliance in use, and the integration of the discriminated gas flow rate for each gas appliance. The gas appliance integrated flow rate display device 2 performs all the display of the gas appliance integrated flow rate display.

  However, both the determination of the gas appliance in use and the gas flow rate integration for each gas appliance are performed on the gas meter 1 side, and the gas appliance integrated flow rate display device 2 registers the installed gas appliance and the gas appliance integration. The flow rate can be displayed, and this second embodiment will be described below.

  In the second embodiment, the control unit 23 of the gas appliance integrated flow rate display device 2 has the input unit 24 when the registration mode is designated by the operation of the switch for selecting the registration mode of the input unit 24. When the product number is input by the numeric key switch, the control unit 23 extracts the gas appliance associated with the product number and the gas flow pattern corresponding to the gas appliance from the registration gas flow pattern table by the input product number. The extracted gas appliance and the gas flow rate pattern corresponding to the gas appliance are processed up to the creation of the registered gas flow rate pattern table. The created registered gas flow rate pattern table is transmitted from the control unit 23 of the gas appliance integrated flow rate display device 2 to the control unit 13 of the gas meter 1 via a communication line that performs bidirectional communication between the communication units 15 and 21. Then, the information is stored in the electrically rewritable ROM in the control unit 13 in the registered gas flow rate pattern table area prepared in advance as the second storage unit 101.

  In the second embodiment, in the normal mode, the control unit 21 of the gas appliance integrated flow rate display device 2 takes in the gas flow rate value from the gas meter 1 and discriminates the gas appliance determined for each gas appliance. The gas flow rate integration is performed in the gas flow rate integration unit for each gas appliance prepared in the electrically rewritable ROM in the control unit 13 of the gas meter 1. When there is a request from the control unit 23 of the integrated flow rate display device 2 for each gas appliance via the communication line, the integrated flow rate value of the gas flow rate integrated unit for each gas appliance is integrated by the gas instrument 1 from the control unit 13 of the gas meter 1. It is sent to the flow rate display device 2. The integrated flow rate value sent from the control unit 13 of the gas meter 1 and received by the integrated flow rate display device 2 for each gas appliance updates the previous integrated gas flow rate value in the integrated flow rate storage unit formed in the memory in the control unit 23. To do. The flow rate integrated value for each gas appliance is displayed on the display unit 22 by the gas flow rate integrated value in the flow rate integrated value storage unit.

In addition, about the method of discrimination | determination of the gas appliance which the control part 13 of the gas meter 1 performs, and the integrating | accumulating of the gas flow rate according to gas appliance, except that the gas flow rate value generate | occur | produces inside the gas meter 1, integration according to gas appliance This is substantially the same as the processing performed by the control unit 23 of the flow rate display device 2.
Therefore, the CPU of the control unit 13 detects the gas flow rate pattern of the in-use gas appliance detected based on the gas flow rate value detected in the gas meter by the gas flow rate pattern detection unit 102 and the gas flow rate pattern detection unit 102. As a gas appliance discriminating means 103 that extracts a gas flow pattern that matches the gas flow pattern from the registered gas flow pattern table stored in the second storage means 101 and extracts a gas appliance associated with the gas flow pattern. It is functioning.

  That is, the control unit 13 of the gas meter 1 obtains an instantaneous gas flow rate value from the gas flow rate signal from the gas flow rate detection unit 11 in the gas meter 1 and temporarily stores it in a memory that stores the gas flow rate value for a predetermined time. When it is determined that the use of a gas appliance has started based on the gas flow rate value stored for a certain period of time temporarily stored in the memory, a gas flow rate pattern that matches the gas flow rate pattern from the ignition to the steady state is registered. The gas appliance is extracted from the gas flow rate pattern table, and the gas appliance corresponding to the extracted gas flow rate pattern is extracted to discriminate the gas appliance. The temporary storage memory is formed in the RAM in the control unit 13.

  When the gas appliance is determined, the gas appliance corresponding to the determined gas appliance among the gas flow rate integrating units prepared for each gas appliance corresponding to the gas appliance registered in the registered gas flow pattern table. The other gas flow rate integrating unit sequentially integrates the integrated value of the gas flow rate value stored in the temporary storage memory up to the above determination and the gas flow rate value to be taken in thereafter into the integrated value of this integrating unit. After that, the gas flow rate value is temporarily stored in the memory for a certain time, and when the stored gas flow rate value does not match the steady state value of the registered gas flow rate pattern table, the use of the gas appliance is not performed. As the process is finished, the integration of the gas flow rate value in the gas flow rate integrating unit for each gas appliance corresponding to the gas appliance is stopped.

  Therefore, the control unit 13 of the gas meter 1 can perform gas appliance discrimination and gas flow integration for each gas appliance by a process equivalent to the process of the control unit 23 shown in FIG. A flowchart showing the processing to be performed is not shown.

  As described above, when registering the gas flow rate pattern of the gas appliance connected to the gas supply line, the product number can be used without connecting the gas appliance to the gas supply line and actually putting the gas appliance into use. Simply by inputting the gas appliance corresponding to the entered product number and the gas flow pattern corresponding to the gas appliance from the registration gas flow pattern table, and corresponding to the extracted gas appliance and the gas appliance. The registered gas flow rate pattern table that associates the gas flow rate pattern to be stored is stored in the second storage means, and is used in comparison with the gas flow rate pattern of the gas appliance in use detected based on the gas flow rate value detected by the gas meter. Gas flow pattern for discriminating gas appliances can be registered, so gas flow pattern for gas appliance discrimination Eliminates the need as well as reduce the time required to register, it is possible to improve convenience.

It is a block diagram which shows the basic composition of the gas appliance discrimination device incorporating the gas flow rate pattern registration device for gas appliance discrimination by this invention. It is a block diagram which shows the structure of embodiment of the gas appliance discrimination device by this invention. It is a figure which shows the gas flow rate pattern table for registration. It is a figure which shows a registration gas flow rate pattern table. It is a figure which shows the gas flow summation part according to gas appliance. It is a flowchart figure which simplifies and shows the whole process which the control part of the integrated flow rate display apparatus according to gas appliances performs. It is a flowchart figure which shows the detail of the registration gas flow rate pattern table preparation process in FIG. It is a flowchart figure which shows the detail of the normal mode process in FIG.

Explanation of symbols

23-1 1st memory | storage means (ROM of the control part 23)
23-2 Gas flow rate pattern extraction means (CPU of control unit 23)
24 Input means (input unit)
25 Reading input means (reading input unit)
101 2nd memory | storage means (ROM of the control part 13 or 23)
102 Gas flow rate pattern detection means (CPU of control unit 13 or 23)
103 Gas appliance discriminating means (CPU of control unit 13 or 23)

Claims (8)

A gas flow rate pattern registration method for gas appliance identification for registering a gas flow rate pattern for identifying a gas appliance in use from a gas appliance connected to a gas supply line,
A registration gas flow rate pattern table in which product numbers of existing gas appliances, gas appliances corresponding to the respective product numbers, and gas flow patterns corresponding to the gas appliances are associated with each other is stored in advance in the first storage unit. ,
In response to the input of the product number of the gas appliance connected to the gas supply line, the gas appliance associated with the product number and the gas flow rate pattern corresponding to the gas appliance are extracted from the registration gas flow pattern table. ,
A registered gas flow rate pattern table in which the extracted gas appliance and a gas flow rate pattern corresponding to the gas appliance are associated with each other is stored in the second storage means, and is detected based on the gas flow rate value detected by the gas meter. A gas flow rate pattern registration method for gas appliance discrimination, comprising: registering a gas flow rate pattern for discriminating a gas appliance in use in comparison with a gas flow rate pattern of the gas appliance. A gas flow rate discrimination device for gas appliance discrimination for registering a gas flow rate pattern for discriminating a gas appliance in use from a gas appliance connected to a gas supply line,
A first storage means for storing in advance a gas flow rate pattern table for registration in which a product number of an existing gas appliance, a gas appliance corresponding to each product number, and a gas flow rate pattern corresponding to the gas appliance are associated;
Input means for inputting a product number of a gas appliance connected to the gas supply line;
Gas flow rate pattern extracting means for extracting from the registration gas flow rate pattern table a gas appliance associated with the product number and a gas flow rate pattern corresponding to the gas appliance in response to the input of the product number by the input means; ,
A second storage means for storing a registered gas flow rate pattern table in which the gas appliance extracted by the extraction means is associated with the gas flow rate pattern corresponding to the gas appliance;
A gas flow rate pattern for identifying a gas device in use is registered in comparison with the gas flow rate pattern of the gas device in use detected based on the gas flow rate value detected in the gas meter. Gas flow pattern registration device. The first storage means, the input means, the gas flow rate pattern extraction means, and the second storage means are connected to a gas meter via a signal line and are configured separately from the gas meter. Provided,
Registering a gas flow rate pattern for discriminating the gas appliance in use in comparison with the gas flow rate pattern of the gas appliance in use detected based on the gas flow rate value inputted from the gas meter via the signal line. The gas flow rate pattern registration device for gas appliance discrimination according to claim 2 characterized by the above-mentioned. The first storage means, the input means, and the gas flow rate pattern extraction means are provided in a device connected to a gas meter via a communication line and configured separately from the gas meter, and the second storage means Is provided in the gas meter,
A gas flow rate pattern for discriminating the gas appliance in use in the meter is registered in contrast to the gas flow rate pattern of the gas appliance in use detected based on the gas flow rate value detected in the gas meter. The gas flow rate pattern registration device for gas appliance discrimination according to claim 2. The input means is a code reading means;
When the code reading unit reads a product number that is not stored in the registration gas flow rate pattern table, the second storage unit stores the gas appliance corresponding to the product number read by the code reading unit and the gas The gas flow pattern registration device for gas appliance discrimination according to any one of claims 2 to 4, wherein a registered gas flow rate pattern table in which a gas flow rate pattern corresponding to the appliance is associated is additionally stored. A gas appliance discrimination device for discriminating a gas appliance in use from a gas appliance connected to a gas supply line,
A first storage means for storing in advance a registration gas flow rate pattern table in which a product number of an existing gas appliance, a gas appliance corresponding to each product number, and a gas flow rate pattern corresponding to the gas appliance are associated in advance;
Input means for inputting a product number of a gas appliance connected to the gas supply line;
Gas flow rate pattern extracting means for extracting from the registration gas flow rate pattern table a gas appliance associated with the product number and a gas flow rate pattern corresponding to the gas appliance in response to the input of the product number by the input means; ,
Second storage means for storing a registered gas flow rate pattern table in which the gas appliance extracted by the extraction means is associated with the gas flow rate pattern corresponding to the gas appliance;
A gas flow rate pattern detecting means for detecting a gas flow rate pattern of the gas appliance in use detected based on the gas flow rate value detected in the gas meter;
A gas flow rate pattern that matches the gas flow rate pattern detected by the gas flow rate pattern detection unit is extracted from the registered gas flow rate pattern table stored in the second storage unit, and the gas associated with the gas flow rate pattern is extracted. A gas appliance discriminating apparatus comprising: a gas appliance discriminating means for extracting an appliance. The first storage means, the input means, the gas flow rate pattern extraction means, the second storage means, the gas flow rate pattern detection means, and the gas appliance determination means are connected via a signal line. The gas appliance discriminating apparatus according to claim 6, wherein the gas appliance discriminating apparatus is provided in an apparatus connected to the gas meter and configured separately from the gas meter. The first storage means, the input means, and the gas flow rate pattern extraction means are provided in a device connected to the gas meter via a communication line and configured separately from the gas meter, and the second storage means The gas appliance discrimination device according to claim 6, wherein the gas flow rate pattern detection means and the gas appliance determination means are provided in a gas meter.

Images