JP7429615B2 - Gas appliance identification device - Google Patents

Gas appliance identification device Download PDF

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JP7429615B2
JP7429615B2 JP2020125127A JP2020125127A JP7429615B2 JP 7429615 B2 JP7429615 B2 JP 7429615B2 JP 2020125127 A JP2020125127 A JP 2020125127A JP 2020125127 A JP2020125127 A JP 2020125127A JP 7429615 B2 JP7429615 B2 JP 7429615B2
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光男 横畑
嵩浩 佐藤
拓也 北澤
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Yazaki Energy System Corp
Panasonic Corp
Panasonic Holdings Corp
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Yazaki Energy System Corp
Panasonic Corp
Matsushita Electric Industrial Co Ltd
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Description

本発明は、ガスを使用しているガス器具の種類を判別するガス器具判別装置に関する。 The present invention relates to a gas appliance discrimination device that discriminates the type of gas appliance that uses gas.

通常、ガスメータは複数のガス器具に接続されており、ガスメータを通過したガスは、複数のガス器具に供給される。複数のガス器具のうち使用されているガス器具の種類を判別することにより、器具ごとのガス使用量や、器具ごとの保安情報をユーザに提供することが可能になり、ガス事業者のサービスの幅を広げることが可能になる。 Usually, a gas meter is connected to a plurality of gas appliances, and gas passing through the gas meter is supplied to the plurality of gas appliances. By determining the type of gas appliance being used among multiple gas appliances, it becomes possible to provide users with the amount of gas used by each appliance and safety information for each appliance, thereby improving the service provided by gas utilities. It becomes possible to widen the range.

ガスメータでは一定時間間隔でガス流量を計測しており、この計測されるガス流量の変化のパターンと、ガス器具の種類ごとに予め求めておいたガス流量の変化のパターンとを比較することにより、使用されているガス器具の種類を判別する方法がある。例えば、ガス器具は、その種類ごとに動作開始時に特有の使用ガス流量の変化があり、これを検知することでどの種類のガス器具が動作しているかを判別する方法がある。 A gas meter measures the gas flow rate at regular time intervals, and by comparing the pattern of change in the measured gas flow rate with the pattern of change in gas flow rate determined in advance for each type of gas appliance, There are ways to determine the type of gas appliance being used. For example, each type of gas appliance has a unique change in the flow rate of gas used at the start of operation, and there is a method of determining which type of gas appliance is operating by detecting this change.

特開２００７－２４８０９号公報Japanese Patent Application Publication No. 2007-24809

しかしながら、種類の異なるガス器具であっても、使用ガス流量範囲が似ているものがあり、このようなガス器具の種類を判別することは容易ではない。 However, even gas appliances of different types may have similar gas flow rate ranges, and it is not easy to distinguish between the types of gas appliances.

そこで、特許文献１には、複数のガス器具のうち使用ガス流量範囲が似ているガス器具に、当該ガス器具の動作の有無を検知する検知装置を取り付ける構成が記載されている。この特許文献１の構成では、検知装置が必要になる。 Therefore, Patent Document 1 describes a configuration in which a detection device for detecting whether or not the gas appliance is in operation is attached to a plurality of gas appliances having similar gas flow rate ranges. The configuration of Patent Document 1 requires a detection device.

本発明は上記のような課題を解決するためになされたもので、ガス器具の動作の有無を検知するための検知装置を設けることなく、ガス器具の種類の判別の精度を向上させることができるガス器具判別装置を提供することを目的としている。 The present invention has been made to solve the above-mentioned problems, and it is possible to improve the accuracy of determining the type of gas appliance without providing a detection device to detect whether the gas appliance is in operation. The purpose is to provide a gas appliance identification device.

上記目的を達成するために、本発明のある態様に係るガス器具判別装置は、動作状態であるオン状態と不動作状態であるオフ状態とを繰り返す断続動作による運転を行い、オフ状態の時間が第１の所定時間以上、第２の所定時間未満である第１種類のガス器具と、オン状態とオフ状態とを繰り返す断続動作による運転を行い、オフ状態の時間が前記第１の所定時間未満である第２種類のガス器具とを少なくとも含む複数の種類のガス器具へガスを供給する共通の流路におけるガス流量を一定時間間隔で計測する流量計測部と、前記流量計測部で計測されるガス流量の変化に基づいて任意の前記ガス器具のオン状態を検出し、オン状態を検出するたびに、このオン状態の期間におけるガス流量の変化に基づいて当該オン状態の前記ガス器具の種類を１つまたは複数選定する種類選定部と、前記種類選定部において、オン状態の前記ガス器具の種類が第１種類および／または第２種類を含む複数の種類に選定された場合に、当該ガス器具のオン状態の終了後に続くオフ状態の時間を計測するオフ時間計測部と、前記種類選定部において、前回検出のオン状態の前記ガス器具の種類が前記第１種類および／または前記第２種類を含む複数の種類に選定された場合に、この選定結果と、前記オフ時間計測部で計測される前回検出のオン状態の終了後に続くオフ状態の時間と、このオフ状態のあとに前記種類選定部により検出される今回検出のオン状態の前記ガス器具の種類の選定結果とに基づいて、前回検出のオン状態の前記ガス器具の種類を１つに認定する処理を含む認定処理を行う器具認定部と、を備えている。 In order to achieve the above object, a gas appliance discrimination device according to an aspect of the present invention performs an intermittent operation that repeats an ON state, which is an operating state, and an OFF state, which is a non-operating state, and the duration of the OFF state is The first type of gas appliance is operated for a period of at least a first predetermined time and less than a second predetermined time, and the off-state time is less than the first predetermined time. a flow rate measuring unit that measures a gas flow rate at regular time intervals in a common flow path that supplies gas to a plurality of types of gas appliances including at least a second type of gas appliance; The on-state of any gas appliance is detected based on the change in the gas flow rate, and each time the on-state is detected, the type of the gas appliance in the on-state is determined based on the change in the gas flow rate during the on-state period. a type selection unit that selects one or more types; and when the type selection unit selects a plurality of types of the gas appliance in the on state, including a first type and/or a second type, the gas appliance an off-time measurement unit that measures the time of an off-state that continues after the end of an on-state; and a type selection unit, in which the type of the gas appliance in the previously detected on-state is the first type and/or the second type. This selection result, the off-state time that continues after the end of the last detected on-state measured by the off-time measurement section, and the time after this off-state, the type selection section an appliance certification unit that performs certification processing including processing to certify the type of the gas appliance in the on state detected last time as one type based on the selection result of the type of the gas appliance in the currently detected on state detected by; It is equipped with.

この構成によれば、器具認定部が、種類選定部において前回検出のオン状態のガス器具の種類が第１種類および／または第２種類を含む複数の種類に選定された場合に、この選定結果と、オフ時間計測部で計測されるオフ状態の時間と、このオフ状態のあとに種類選定部により検出される今回検出のオン状態のガス器具の種類の選定結果とに基づいて、前回検出のオン状態のガス器具の種類を１つに認定する処理を含む認定処理を行うことができる。よって、ガス器具の動作の有無を検知するための検知装置を設けることなく、ガス器具の種類の判別の精度を向上させることができる。 According to this configuration, when the type selection unit selects the type of gas appliance in the ON state detected last time as one of multiple types including the first type and/or the second type, the appliance certification unit determines the selection result. Based on the off-state time measured by the off-time measurement section and the selection result of the type of gas appliance in the currently detected on-state detected by the type selection section after the off-state, the previous detection is performed. Certification processing including processing for certification of one type of gas appliance in the ON state can be performed. Therefore, the accuracy of determining the type of gas appliance can be improved without providing a detection device for detecting whether or not the gas appliance is in operation.

また、前記器具認定部は、前記種類選定部において、前回検出のオン状態の前記ガス器具の種類が少なくとも前記第１種類と前記第２種類とを含む複数の種類に選定された場合であって、前記オフ時間計測部で計測される前回検出のオン状態と今回検出のオン状態との間のオフ状態の時間が第１の所定時間未満であり、かつ、前記種類選定部において、今回検出のオン状態の前記ガス器具の種類が、前記第２種類に選定、または前記第２種類を含む複数の種類に選定された場合には、前回検出のオン状態の前記ガス器具の種類を前記第２種類に認定する前記認定処理を行うよう構成されていてもよい。 Further, the appliance recognition section may determine that the type selection section selects the type of the gas appliance in the ON state detected last time as one of a plurality of types including at least the first type and the second type. , the off-state time measured by the off-time measurement section between the on-state of the previous detection and the on-state of the current detection is less than a first predetermined time; If the type of the gas appliance in the on state is selected as the second type or a plurality of types including the second type, the type of the gas appliance in the on state detected last time is selected as the second type. The device may be configured to perform the certification processing for certification as a type.

また、前記器具認定部は、前記種類選定部において、前回検出のオン状態の前記ガス器具の種類が前記第１及び第２種類以外の種類と前記第２種類とに選定された場合であって、前記オフ時間計測部で計測される前回検出のオン状態と今回検出のオン状態との間のオフ状態の時間が第１の所定時間未満であり、かつ、前記種類選定部において、今回検出のオン状態の前記ガス器具の種類が、前記第２種類に選定、または前記第２種類を含む複数の種類に選定された場合には、前回検出のオン状態の前記ガス器具の種類を前記第２種類に認定する前記認定処理を行うよう構成されていてもよい。 In addition, the appliance recognition unit determines that when the type selection unit selects the type of the gas appliance in the ON state detected last time as a type other than the first and second types and the second type, , the off-state time measured by the off-time measuring section between the on-state of the previous detection and the on-state of the current detection is less than a first predetermined time; If the type of the gas appliance in the on state is selected as the second type or a plurality of types including the second type, the type of the gas appliance in the on state detected last time is selected as the second type. The device may be configured to perform the certification processing for certification as a type.

また、前記器具認定部は、前記種類選定部において、前回検出のオン状態の前記ガス器具の種類が前記第１及び第２種類以外の種類と前記第２種類とに選定された場合であって、前記オフ時間計測部で計測される前回検出のオン状態と今回検出のオン状態との間のオフ状態の時間が第１の所定時間以上、第２の所定時間未満の場合には、前回検出のオン状態の前記ガス器具の種類は第２種類ではないと認定する前記認定処理を行うよう構成されていてもよい。 In addition, the appliance recognition unit determines that when the type selection unit selects the type of the gas appliance in the ON state detected last time as a type other than the first and second types and the second type, , if the off-state time between the previously detected on-state and the currently detected on-state measured by the off-time measuring unit is greater than or equal to the first predetermined time and less than the second predetermined time, the previously detected The gas appliance may be configured to perform the certification process of certifying that the type of the gas appliance in the ON state is not the second type.

また、前記器具認定部は、前記種類選定部において、前回検出のオン状態の前記ガス器具の種類が少なくとも前記第２種類を含む複数の種類に選定された場合であって、前記オフ時間計測部で計測される前回検出のオン状態と今回検出のオン状態との間のオフ状態の時間が第１の所定時間未満であり、かつ、前記種類選定部において、今回検出のオン状態の前記ガス器具の種類が、前記第２種類以外の１つまたは複数の種類に選定された場合には、前記認定処理を行わずに、前記種類選定部による次回検出のオン状態を今回検出のオン状態とみなす継続処理を行うとともに、前記オフ時間計測部に前回検出のオン状態の前記ガス器具がオフ状態になってからのオフ状態の時間を継続して計測させるよう構成されていてもよい。 In addition, when the type selection unit selects the type of the gas appliance in the ON state detected last time as one of a plurality of types including at least the second type, the appliance recognition unit The off state time between the previously detected on state and the currently detected on state measured in is less than a first predetermined time, and the type selection unit determines that the gas appliance is in the currently detected on state. If the type is selected as one or more types other than the second type, the on state of the next detection by the type selection unit is regarded as the on state of the current detection without performing the certification process. The gas appliance may be configured to perform a continuation process and cause the off-time measuring section to continuously measure the off-state time after the gas appliance that was previously detected in the on-state turned off.

また、前記器具認定部は、前記種類選定部において、前回検出のオン状態の前記ガス器具の種類が少なくとも前記第１種類と前記第２種類とを含む複数の種類に選定された場合であって、前記オフ時間計測部で計測される前回検出のオン状態と今回検出のオン状態との間のオフ状態の時間が第１の所定時間以上、第２の所定時間未満であり、かつ、前記種類選定部において、今回検出のオン状態の前記ガス器具の種類が、前記第１種類に選定、または前記第１種類を含む複数の種類に選定された場合には、前回検出のオン状態の前記ガス器具の種類を前記第１種類に認定する前記認定処理を行うよう構成されていてもよい。 Further, the appliance recognition section may determine that the type selection section selects the type of the gas appliance in the ON state detected last time as one of a plurality of types including at least the first type and the second type. , the off-state time between the previously detected on-state and the currently detected on-state measured by the off-time measurement unit is greater than or equal to a first predetermined time and less than a second predetermined time; In the selection section, if the type of the gas appliance in the on state detected this time is selected as the first type or selected as one of a plurality of types including the first type, the gas appliance in the on state detected last time is selected as the first type or a plurality of types including the first type. The device may be configured to perform the certification process of certification the type of the instrument as the first type.

また、前記器具認定部は、前記種類選定部において、前回検出のオン状態の前記ガス器具の種類が前記第１及び第２種類以外の種類と前記第１種類とに選定された場合であって、前記オフ時間計測部で計測される前回検出のオン状態と今回検出のオン状態との間のオフ状態の時間が第１の所定時間以上、第２の所定時間未満であり、かつ、前記種類選定部において、今回検出のオン状態の前記ガス器具の種類が、前記第１種類に選定、または前記第１種類を含む複数の種類に選定された場合には、前回検出のオン状態の前記ガス器具の種類を前記第１種類に認定する前記認定処理を行うよう構成されていてもよい。 In addition, the appliance recognition unit determines that when the type selection unit selects the type of the gas appliance in the ON state detected last time as a type other than the first and second types and the first type, , the off-state time between the previously detected on-state and the currently detected on-state measured by the off-time measurement unit is greater than or equal to a first predetermined time and less than a second predetermined time; In the selection section, if the type of the gas appliance in the on state detected this time is selected as the first type or selected as one of a plurality of types including the first type, the gas appliance in the on state detected last time is selected as the first type or a plurality of types including the first type. The device may be configured to perform the certification process of certification the type of the instrument as the first type.

また、前記器具認定部は、前記種類選定部において、前回検出のオン状態の前記ガス器具の種類が前記第１及び第２種類以外の種類と前記第１種類とに選定された場合であって、前記オフ時間計測部で計測される前回検出のオン状態と今回検出のオン状態との間のオフ状態の時間が第１の所定時間未満であり、かつ、前記種類選定部において、今回検出のオン状態の前記ガス器具の種類が、前記第１種類に選定、または前記第１種類を含む複数の種類に選定された場合には、前回検出のオン状態の前記ガス器具の種類は第１種類ではないと認定する前記認定処理を行うよう構成されていてもよい。 In addition, the appliance recognition unit determines that when the type selection unit selects the type of the gas appliance in the ON state detected last time as a type other than the first and second types and the first type, , the off-state time measured by the off-time measurement section between the on-state of the previous detection and the on-state of the current detection is less than a first predetermined time; If the type of the gas appliance in the on state is selected as the first type or a plurality of types including the first type, the type of the gas appliance in the on state detected last time is the first type. It may be configured to perform the above-mentioned certification process of certifying that it is not.

また、前記器具認定部は、前記種類選定部において、前回検出のオン状態の前記ガス器具の種類が前記第１及び第２種類以外の種類と前記第１種類とに選定された場合であって、前記オフ時間計測部で計測される前回検出のオン状態と今回検出のオン状態との間のオフ状態の時間が第２の所定時間未満であり、かつ、前記種類選定部において、今回検出のオン状態の前記ガス器具の種類が、前記第１種類以外の１つまたは複数の種類に選定された場合には、前記認定処理を行わずに、前記種類選定部による次回検出のオン状態を今回検出のオン状態とみなす継続処理を行うとともに、前記オフ時間計測部に前回検出のオン状態の前記ガス器具がオフ状態になってからのオフ状態の時間を継続して計測させるよう構成されていてもよい。 In addition, the appliance recognition unit determines that when the type selection unit selects the type of the gas appliance in the ON state detected last time as a type other than the first and second types and the first type, , the off-state time measured by the off-time measuring unit between the on-state of the previous detection and the on-state of the current detection is less than a second predetermined time; If the type of the gas appliance in the on state is selected as one or more types other than the first type, the on state to be detected next time by the type selection unit is set to the current one without performing the certification process. The gas appliance is configured to perform a continuation process of deeming the gas appliance to be in the detected ON state, and to cause the OFF time measurement unit to continuously measure the time period in which the gas appliance in the ON state detected last time has been in the OFF state. Good too.

また、前記器具認定部は、前記種類選定部において、前回検出のオン状態の前記ガス器具の種類が少なくとも前記第１種類と前記第２種類とを含む複数の種類に選定された場合であって、前記オフ時間計測部で計測される前回検出のオン状態と今回検出のオン状態との間のオフ状態の時間が第１の所定時間以上、第２の所定時間未満であり、かつ、前記種類選定部において、今回検出のオン状態の前記ガス器具の種類が、前記第１種類以外の１つまたは複数の種類に選定された場合には、前記認定処理を行わずに、前記種類選定部による次回検出のオン状態を今回検出のオン状態とみなす継続処理を行うとともに、前記オフ時間計測部に前回検出のオン状態の前記ガス器具がオフ状態になってからのオフ状態の時間を継続して計測させるよう構成されていてもよい。 Further, the appliance recognition section may determine that the type selection section selects the type of the gas appliance in the ON state detected last time as one of a plurality of types including at least the first type and the second type. , the off-state time between the previously detected on-state and the currently detected on-state measured by the off-time measurement unit is greater than or equal to a first predetermined time and less than a second predetermined time; If the selection unit selects one or more types of the gas appliance currently detected in the ON state as one or more types other than the first type, the type selection unit selects one or more types other than the first type. A continuation process is performed in which the next detected on state is regarded as the currently detected on state, and the off time measurement unit continues to display the off state time since the last detected on state of the gas appliance turned off. It may be configured to allow measurement.

また、前記器具認定部は、前記種類選定部において、前回検出のオン状態の前記ガス器具の種類が前記第１種類および／または前記第２種類を含む複数の種類に選定された場合に、前回検出のオン状態の終了後に続くオフ状態の時間を前記オフ時間計測部によって計測中に、この計測中の時間が第２の所定時間以上になった場合には、前回検出のオン状態の前記ガス器具の種類は第１種類および第２種類のいずれでもないと認定する前記認定処理を行うよう構成されていてもよい。 In addition, the appliance certification unit determines whether the type of the gas appliance in the ON state detected last time is selected as one of a plurality of types including the first type and/or the second type in the type selection unit. While the off-time measurement unit is measuring the off-state time that continues after the end of the on-state detection, if the time being measured exceeds the second predetermined time, the gas in the on-state detected last time is The apparatus may be configured to perform the certification process of certifying that the type of the instrument is neither the first type nor the second type.

本発明は、以上に説明した構成を有し、ガス器具の動作の有無を検知するための検知装置を設けることなく、ガス器具の種類の判別の精度を向上させることができるガス器具判別装置を提供することができるという効果を奏する。 The present invention provides a gas appliance discrimination device having the above-described configuration and capable of improving the accuracy of determining the type of gas appliance without providing a detection device for detecting whether or not the gas appliance is in operation. This has the effect that it can be provided.

図１は、本実施形態のガス器具判別装置の一例であるガスメータの構成例の概略を示すブロック図である。FIG. 1 is a block diagram schematically showing a configuration example of a gas meter, which is an example of a gas appliance discrimination device according to the present embodiment. 図２（Ａ）は、あるファンヒータの運転時の使用ガス流量の経時変化の一例を示す図であり、図２（Ｂ）は、ある乾燥機の運転時の使用ガス流量の経時変化の一例を示す図である。FIG. 2(A) is a diagram showing an example of a change over time in the flow rate of gas used during operation of a certain fan heater, and FIG. 2(B) is an example of a change over time in the flow rate of gas used during operation of a certain dryer. FIG. 図３は、種類選定部、オフ時間計測部及び器具認定部による処理の結果をまとめた表を示す図である。FIG. 3 is a diagram showing a table summarizing the results of processing by the type selection section, off-time measurement section, and appliance certification section. 図４（Ａ）、（Ｂ）は、種類選定部及び器具認定部による処理等を説明するための図である。FIGS. 4(A) and 4(B) are diagrams for explaining the processing by the type selection section and the instrument certification section.

以下、本発明の好ましい実施の形態を、図面を参照しながら説明する。なお、本発明は、以下の実施形態に限定されない。 Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the following embodiments.

（実施形態）
本実施形態のガス器具判別装置の一例であるガスメータの構成例の概略を示すブロック図である。 (Embodiment)
1 is a block diagram schematically showing a configuration example of a gas meter, which is an example of a gas appliance discrimination device according to the present embodiment.

ガス器具判別装置の一例であるガスメータ１は、流路１０と、流量計測部１１と、制御装置１２とを備えている。また、流路１０には、複数の種類のガス器具２１～２３が接続されている。つまり、流路１０は、複数の種類のガス器具２１～２３へガスを供給する共通のガス流路である。なお、ガスメータ１には、図示しないが、流量計測部１１及び制御装置１２以外の公知の構成が設けられていてもよい。 A gas meter 1, which is an example of a gas appliance discrimination device, includes a flow path 10, a flow rate measurement section 11, and a control device 12. Further, a plurality of types of gas appliances 21 to 23 are connected to the flow path 10. In other words, the flow path 10 is a common gas flow path that supplies gas to multiple types of gas appliances 21 to 23. Although not shown, the gas meter 1 may be provided with a known configuration other than the flow rate measuring section 11 and the control device 12.

流量計測部１１は、流路１０内を流れるガス流量（瞬時流量）を一定時間間隔で計測し流量データとして制御装置１２へ出力する。流量計測部１１としては、代表的には、超音波流量計を挙げることができる。超音波流量計は、流路１０に流れるガスに対して、一定の時間間隔で超音波を送信および受信し、これによりガス流量を計測し、流量データとして出力する。超音波流量計の具体的な構成は特に限定されず、公知の構成を用いることができる。 The flow rate measurement unit 11 measures the gas flow rate (instantaneous flow rate) flowing in the flow path 10 at regular time intervals and outputs the measured flow rate data to the control device 12. A typical example of the flow rate measuring section 11 is an ultrasonic flow meter. The ultrasonic flowmeter transmits and receives ultrasonic waves at regular time intervals to the gas flowing through the flow path 10, thereby measuring the gas flow rate and outputting it as flow rate data. The specific configuration of the ultrasonic flowmeter is not particularly limited, and a known configuration can be used.

制御装置１２は、マイクロコンピュータまたはマイクロコントローラ等で構成され、ＣＰＵ及びメモリ（ＲＯＭ及びＲＡＭ）等を備えている。ＣＰＵがメモリに記憶された制御プログラムを実行することにより、ガスメータ１全体の制御を行うことができる。メモリには、制御プログラムの他、種々の情報を記憶することができる。制御装置１２は、集中制御する単独の制御装置によって構成されていてもよいし、互いに協働して分散制御する複数の制御装置によって構成されていてもよい。 The control device 12 is composed of a microcomputer or a microcontroller, and includes a CPU, memory (ROM and RAM), and the like. The entire gas meter 1 can be controlled by the CPU executing the control program stored in the memory. The memory can store various information in addition to control programs. The control device 12 may be configured by a single control device that performs centralized control, or may be configured by a plurality of control devices that cooperate with each other to perform distributed control.

制御装置１２は、例えば、流量計測部１１で計測されるガス流量からガス使用量を所定時間ごとに算出して記憶しておくことができる。また、ガスメータ１は、ガス使用量の積算値等の情報を監視センタの監視装置（コンピュータ）へ送信する機能を有していてもよい。 For example, the control device 12 can calculate and store the amount of gas used at predetermined time intervals from the gas flow rate measured by the flow rate measuring section 11. Further, the gas meter 1 may have a function of transmitting information such as an integrated value of gas consumption to a monitoring device (computer) of a monitoring center.

本実施形態では、制御装置１２は、種類選定部１３、オフ時間計測部１４および器具認定部１５としても機能する。 In this embodiment, the control device 12 also functions as a type selection section 13, an off-time measurement section 14, and an appliance certification section 15.

種類選定部１３は、流量計測部１１で計測されるガス流量の変化に基づいて任意のガス器具２１～２３のオン状態（動作状態であること）を検出し、オン状態を検出するたびに、このオン状態の期間（例えば、オン状態の初期の期間）におけるガス流量の変化に基づいて当該オン状態のガス器具の種類を１つまたは複数選定する選定処理を行うよう構成されている。 The type selection unit 13 detects the on state (operating state) of any of the gas appliances 21 to 23 based on the change in the gas flow rate measured by the flow rate measurement unit 11, and each time the on state is detected, The device is configured to perform a selection process of selecting one or more types of gas appliances in the on state based on changes in the gas flow rate during the on state period (for example, the initial period of the on state).

各ガス器具２１～２３には、公知のように運転時（稼働時）に器具の種類に応じた特有の使用ガス流量の変化があり、これを検知することでどのような種類のガス器具が動作しているかを検出することができる。 As is well known, each gas appliance 21 to 23 has a unique change in the flow rate of gas used depending on the type of appliance during operation (during operation), and by detecting this, it can be determined what type of gas appliance is being used. It can be detected whether it is working or not.

本実施形態において、ガス器具の種類とは、例えば、ファンヒータ、乾燥機（衣類乾燥機）、ガステーブル（ガスコンロ）、給湯器、ガスストーブ、ガス床暖房等のような、用途別のカテゴリーの違いに基づく種類をいう。 In this embodiment, the types of gas appliances are categorized by usage, such as fan heaters, dryers (clothes dryers), gas stoves, water heaters, gas stoves, gas floor heating, etc. Refers to types based on differences.

種類選定部１３では、公知の手法を用い、例えば、流量計測部１１で計測されるガス流量の変化を算出し、種類ごとに設定されたガス器具の動作開始時における使用ガス流量の変化（選定条件）に基づいて、ガス器具の動作状態（オン状態）を検出し、その種類を選定する。すなわち、予めガス器具の種類ごとに使用ガス流量の変化についての選定条件が定められている。しかしながら、同じ種類のガス器具であっても、型式の違い、号数（出力）の違い、製造者の違い等により、使用ガス流量およびその変化に違いがある。そこで、各種類の選定条件は、同じ種類のガス器具を同種類として選定できるように、ある範囲をもって設定されている。そのため、異なる種類のガス器具であっても、選定条件が共通する範囲が存在する場合があり、この共通する範囲に該当する場合には、１つの種類に選定することができず、該当する複数の種類を選定する。特に、ファンヒータおよび乾燥機の各種類では、使用ガス流量の範囲が似ており、選定条件の共通する範囲が広く、種類選定部１３でいずれの種類であるかを特定することが難しい場合がある。 The type selection unit 13 uses a known method to calculate, for example, the change in the gas flow rate measured by the flow rate measurement unit 11, and calculates the change in the gas flow rate (selection) at the start of operation of the gas appliance set for each type. The operating state (on state) of the gas appliance is detected based on the condition) and the type is selected. That is, selection conditions regarding changes in the flow rate of gas used are determined in advance for each type of gas appliance. However, even for gas appliances of the same type, there are differences in the flow rate of gas used and its changes due to differences in model, size (output), manufacturer, etc. Therefore, the selection conditions for each type are set within a certain range so that gas appliances of the same type can be selected as the same type. Therefore, even if gas appliances are of different types, there may be a range in which the selection conditions are common, and if this common range applies, it is not possible to select one type, but multiple applicable Select the type. In particular, each type of fan heater and dryer has a similar gas flow rate range and common selection conditions over a wide range, making it difficult for the type selection unit 13 to identify which type it is. be.

図２（Ａ）は、あるファンヒータの運転時の使用ガス流量の経時変化の一例を示す図であり、図２（Ｂ）は、ある乾燥機の運転時の使用ガス流量の経時変化の一例を示す図である。 FIG. 2(A) is a diagram showing an example of a change over time in the flow rate of gas used during operation of a certain fan heater, and FIG. 2(B) is an example of a change over time in the flow rate of gas used during operation of a certain dryer. FIG.

ファンヒータは、図２（Ａ）に示すように、オン状態（期間ＰＡon）とオフ状態（期間ＰＡoff）とを繰り返す断続動作による運転が行われる。また、乾燥機は、図２（Ｂ）に示すように、長時間及び短時間のオン状態（期間ＰＢon）とオフ状態（期間ＰＢoff）とを繰り返す断続動作による運転が行われる。ファンヒータのオフ状態期間ＰＡoffの時間であるオフ時間（オフ状態の時間）及び乾燥機のオフ状態期間ＰＢoffの時間であるオフ時間（オフ状態の時間）は、それぞれ一定時間とは限らないが、総じて、ファンヒータのオフ時間の方が、乾燥機のオフ時間よりも長い。 As shown in FIG. 2A, the fan heater is operated in an intermittent manner, repeating an on state (period PAon) and an off state (period PAoff). Further, as shown in FIG. 2(B), the dryer is operated in an intermittent manner, repeating long and short periods of on state (period PBon) and off state (period PBoff). The off time (off state time) that is the time of the off state period PAoff of the fan heater and the off time (time of the off state) that is the time of the off state period PBoff of the dryer are not necessarily constant times, but Generally, the off time of the fan heater is longer than the off time of the dryer.

本発明者らが調査した結果、型式、号数（出力）、製造者等の異なる種々のファンヒータの断続動作におけるオフ時間は、２００秒以上、１２分未満の範囲内であり、同様に、型式、号数（出力）、製造者等の異なる種々の乾燥機の断続動作におけるオフ時間は、２００秒未満であった。 As a result of investigation by the present inventors, the off time during intermittent operation of various fan heaters of different types, numbers (outputs), manufacturers, etc. is within the range of 200 seconds or more and less than 12 minutes; The off time in intermittent operation of various dryers of different types, sizes (outputs), manufacturers, etc. was less than 200 seconds.

そこで、本実施形態では、流路１０に接続された複数の種類のガス器具２１～２３に、ファンヒータ（第１種類のガス器具）及び乾燥機（第２種類のガス器具）を含む場合において、種類選定部１３において、種類選定部１３において、オン状態のガス器具の種類が第１種類および／または第２種類を含む複数の種類に選定された場合に、当該ガス器具のオン状態の終了後に続くオフ時間をオフ時間計測部１４で計測し、器具認定部１５で、上記オフ時間等に基づいて、可能な限り、ガス器具の種類を認定するようにしている。以下に詳しく説明する。 Therefore, in this embodiment, when the plurality of types of gas appliances 21 to 23 connected to the flow path 10 include a fan heater (first type of gas appliance) and a dryer (second type of gas appliance), , in the type selection unit 13, when the type of the gas appliance in the on state is selected as one of a plurality of types including the first type and/or the second type, the on state of the gas appliance is terminated. The subsequent off-time is measured by the off-time measurement section 14, and the appliance certification section 15 authenticates the type of gas appliance as much as possible based on the off-time and the like. This will be explained in detail below.

前述のように、第１種類の一例であるファンヒータの断続動作におけるオフ時間は、第１の所定時間（例えば２００秒）以上、第２の所定時間（例えば１２分）未満である。また、第２種類の一例である乾燥機の断続動作におけるオフ時間は、第１の所定時間（例えば２００秒）未満である。このように、第２の所定時間は、第１の所定時間よりも長い時間に決められ、これらの時間は、予め制御装置１２に記憶されている。 As described above, the off time in the intermittent operation of the fan heater, which is an example of the first type, is longer than the first predetermined time (for example, 200 seconds) and less than the second predetermined time (for example, 12 minutes). Further, the off time in the intermittent operation of the dryer, which is an example of the second type, is less than the first predetermined time (for example, 200 seconds). In this way, the second predetermined time is determined to be longer than the first predetermined time, and these times are stored in the control device 12 in advance.

オフ時間計測部１４は、種類選定部１３において、オン状態のガス器具の種類が第１種類および／または第２種類を含む複数の種類に選定された場合に、当該ガス器具のオン状態の終了後に続くオフ状態（不動作状態すなわち動作停止状態）の時間（オフ時間）を計測するよう構成されている。 When the type selection unit 13 selects the type of the gas appliance in the on state as one of a plurality of types including the first type and/or the second type, the off time measuring unit 14 determines whether the gas appliance in the on state ends. It is configured to measure the time (off time) of the subsequent off state (non-operating state, ie, non-operating state).

器具認定部１５は、種類選定部１３において、前回検出のオン状態の期間に、当該オン状態のガス器具の種類が第１種類および／または第２種類を含む複数の種類に選定された場合に、この選定結果と、オフ時間計測部１４で計測される前回検出のオン状態の終了後に続くオフ状態の時間（オフ時間）と、このオフ状態のあとに種類選定部１３により検出される今回検出のオン状態のガス器具の種類の種類選定部１３の選定結果とに基づいて、前回検出のオン状態のガス器具の種類を１つに認定する処理を含む認定処理を行うよう構成されている。 The appliance certification unit 15 determines when the type selection unit 13 selects the gas appliance in the on state as one of a plurality of types including the first type and/or the second type during the last detected on state period. , this selection result, the off-state time (off time) that continues after the end of the previously detected on-state measured by the off-time measurement unit 14, and the current detection detected by the type selection unit 13 after this off-state. Based on the selection result of the type selection unit 13 of the type of gas appliance in the on-state, the recognition process is performed including the process of recognizing one type of the gas appliance in the on-state detected last time.

また、器具認定部１５は、種類選定部１３において、任意のガス器具のオン状態の期間におけるガス流量の変化に基づいて当該オン状態のガス器具の種類が１つに選定された場合には、この種類選定部１３で選定された種類を当該オン状態のガス器具の種類に認定するよう構成されている。 In addition, when the type selection unit 13 selects one type of gas appliance in the ON state based on the change in the gas flow rate during the period in which the gas appliance is ON, the appliance certification unit 15 determines that The type selected by the type selection unit 13 is recognized as the type of the gas appliance in the ON state.

図３は、種類選定部１３、オフ時間計測部１４及び器具認定部１５による処理の結果をまとめた表を示す図である。また、図４（Ａ）、（Ｂ）は、種類選定部１３及び器具認定部１５による処理等を説明するための図であり、それぞれの上段に示されたＯＮ，ＯＦＦの遷移図では、種類選定部１３により検出されるガス器具のオン状態（ＯＮ）、オフ状態（ＯＦＦ）を示す。 FIG. 3 is a diagram showing a table summarizing the results of processing by the type selection section 13, off-time measurement section 14, and appliance certification section 15. Further, FIGS. 4A and 4B are diagrams for explaining the processing by the type selection unit 13 and the appliance certification unit 15, and in the ON and OFF transition diagrams shown in the upper rows of each, the type The on state (ON) and the off state (OFF) of the gas appliance detected by the selection unit 13 are shown.

器具認定部１５は、以下の（１）～（１０）の処理等を行う。以下の（１）～（１０）は、図３の表３１中の（１）～（１０）に対応する。また、表３１中および以下に記載する他器具とは、ファンヒータおよび乾燥機以外のガス器具の種類を意味し、１つの種類に限らず、複数の種類であってもよい。 The appliance certification unit 15 performs the following processes (1) to (10). The following (1) to (10) correspond to (1) to (10) in Table 31 of FIG. Further, other appliances described in Table 31 and below refer to types of gas appliances other than fan heaters and dryers, and are not limited to one type, but may be of a plurality of types.

（１）器具認定部１５は、種類選定部１３による前回の選定処理Ｓ１（図４（Ａ））の結果（前回オン状態を検出したガス器具の種類の選定結果）が、図３の表３１の〈Ｃ〉の場合において、すなわち、少なくともファンヒータと乾燥機とを含む複数の種類が選定された場合において、オフ時間計測部１４により計測される前回検出のオン状態と今回検出のオン状態との間のオフ時間Ｔoff1（図４（Ａ））が２００秒未満であり、かつ、種類選定部１３による今回の選定処理Ｓ２（図４（Ａ））の結果（今回オン状態を検出したガス器具の種類の選定結果）が、乾燥機に選定、または乾燥機を含む複数の種類に選定された場合には、前回オン状態を検出したガス器具の種類を乾燥機に認定する認定処理Ｄ１（図４（Ａ））を行う。 (1) The appliance certification unit 15 determines that the result of the previous selection process S1 (FIG. 4(A)) by the type selection unit 13 (selection result of the type of gas appliance whose ON state was detected last time) is shown in Table 3 in FIG. In the case of <C>, that is, when multiple types including at least a fan heater and a dryer are selected, the previously detected on state and the currently detected on state measured by the off time measurement unit 14 are different. If the off time Toff1 (FIG. 4(A)) during (type selection result) is selected as a dryer or multiple types including a dryer, certification processing D1 (Fig. 4(A)).

なお、図４（Ａ）、（Ｂ）では、種類選定部１３により、前回検出のオン状態の期間Ｐ１に、例えば、時刻ｔ１で前回の選定処理Ｓ１が行われ、今回検出のオン状態の期間Ｐ２に、例えば、時刻ｔ２で今回の選定処理Ｓ２が行われることが示されている。さらに、図４（Ｂ）では、種類選定部１３により、次回検出のオン状態の期間Ｐ３に、例えば、時刻ｔ３で次回の選定処理Ｓ３が行われることが示されている。なお、前回、今回および次回は、正の整数ｎを用いて、ｎ回目、（ｎ＋１）回目および（ｎ＋２）回目などと言い換えることもできる。なお、図４（Ａ）、（Ｂ）では、各回で検出されたオン状態の期間Ｐ１，Ｐ２，Ｐ３が全く重ならない場合が図示されているが、オン状態となる器具が異なる場合にはこれらの一部が重なる場合もあり得る。 In FIGS. 4A and 4B, the type selection unit 13 performs the previous selection process S1 during the on-state period P1 of the previous detection, for example, at time t1, and P2 indicates that the current selection process S2 will be performed at time t2, for example. Further, FIG. 4B shows that the type selection unit 13 performs the next selection process S3 at time t3 during the on-state period P3 of next detection. Note that the previous time, this time, and the next time can also be expressed as the nth time, the (n+1)th time, the (n+2)th time, etc. using a positive integer n. Note that although FIGS. 4A and 4B illustrate a case in which the on-state periods P1, P2, and P3 detected each time do not overlap at all, these may differ if the on-state appliances are different. It is possible that some of them may overlap.

（２）器具認定部１５は、種類選定部１３による前回の選定処理Ｓ１（図４（Ａ））の結果が、図３の表３１の〈Ｂ〉の場合において、すなわち、乾燥機と他器具（ファンヒータ及び乾燥機以外の種類）とに選定された場合において、オフ時間計測部１４により計測されるオフ時間Ｔoff1（図４（Ａ））が２００秒未満であり、かつ、種類選定部１３による今回の選定処理Ｓ２（図４（Ａ））の結果が、乾燥機に選定、または乾燥機を含む複数の種類に選定された場合には、前回オン状態を検出したガス器具の種類を乾燥機に認定する認定処理Ｄ１（図４（Ａ））を行う。 (2) When the result of the previous selection process S1 (FIG. 4(A)) by the type selection section 13 is <B> in Table 31 of FIG. (types other than fan heaters and dryers), the off time Toff1 (FIG. 4(A)) measured by the off time measurement unit 14 is less than 200 seconds, and the type selection unit 13 If the result of the current selection process S2 (Fig. 4 (A)) is that the dryer is selected or multiple types including the dryer are selected, the type of gas appliance whose ON state was detected last time is selected as the dryer. Certification processing D1 (FIG. 4(A)) is performed to certify the machine.

（３）器具認定部１５は、種類選定部１３による前回の選定処理Ｓ１（図４（Ａ））の結果が、図３の表３１の〈Ｂ〉の場合において、すなわち、乾燥機と他器具とに選定された場合において、オフ時間計測部１４により計測されるオフ時間Ｔoff1（図４（Ａ））が２００秒以上、１２分未満である場合には、今回の選定処理Ｓ２（図４（Ａ））の結果にかかわらず、前回オン状態を検出したガス器具の種類は乾燥機ではないと認定する認定処理Ｄ１（図４（Ａ））を行う。ここで、前回の選定処理Ｓ１において乾燥機以外で選定された他器具として、１つの種類が選定されている場合には、当該選定されている１つの種類が前回オン状態を検出したガス器具の種類であると認定するようにしてもよい。 (3) When the result of the previous selection process S1 (FIG. 4(A)) by the type selection section 13 is <B> in Table 31 of FIG. In the case where the off-time Toff1 (FIG. 4(A)) measured by the off-time measuring unit 14 is 200 seconds or more and less than 12 minutes, the current selection process S2 (FIG. 4(A)) is selected. Regardless of the result of A)), the certification process D1 (FIG. 4(A)) is performed to certify that the type of gas appliance whose ON state was detected last time is not a dryer. Here, if one type is selected as other appliances other than the dryer in the previous selection process S1, the selected one type is the gas appliance whose ON state was detected last time. It is also possible to recognize that it is a type.

（４）器具認定部１５は、種類選定部１３による前回の選定処理Ｓ１（図４（Ｂ））の結果が、図３の表３１の〈Ｂ〉または〈Ｃ〉の場合において、すなわち、少なくとも乾燥機を含む複数の種類に選定された場合において、オフ時間計測部１４により計測されるオフ時間Ｔoff1（図４（Ｂ））が２００秒未満であり、かつ、種類選定部１３による今回の選定処理Ｓ２（図４（Ｂ））の結果が、乾燥機以外の１つまたは複数の種類（他器具、ファンヒータ、またはファンヒータ及び他器具）に選定された場合には、種類選定部１３による前回検出のオン状態のガス器具はオフ状態が継続していると判断し、前記認定処理を行わずに保留とし、種類選定部１３による次回検出のオン状態を今回検出のオン状態とみなす継続処理を行うとともに、オフ時間計測部１４に前回検出のオン状態のガス器具がオフ状態になってからのオフ状態の時間を継続して計測させる。この場合、オフ時間計測部１４により前回検出のオン状態と、今回検出とみなされた次回検出のオン状態との間のオフ時間Ｔoff2（図４（Ｂ））が計測される。このオフ時間Ｔoff2の計測値と、今回とみなされる次回の選定処理Ｓ３（図４（Ｂ））の結果とを用いて、前述のような認定処理Ｄ１（図４（Ｂ））が行われる場合もあるし、再度、認定処理が保留され、継続処理となる場合もある。 (4) When the result of the previous selection process S1 (FIG. 4(B)) by the type selection section 13 is <B> or <C> in Table 31 of FIG. In the case where multiple types including the dryer are selected, the off time Toff1 (FIG. 4(B)) measured by the off time measurement unit 14 is less than 200 seconds, and the current selection by the type selection unit 13 If the result of process S2 (FIG. 4(B)) is that one or more types (other appliances, fan heaters, or fan heaters and other appliances) other than the dryer are selected, the type selection unit 13 It is determined that the gas appliance that was in the on state detected last time continues to be in the off state, and the above-mentioned certification process is not performed and the gas appliance is put on hold, and the next time detected on state by the type selection unit 13 is considered as the currently detected on state. Continuation processing At the same time, the off-time measuring unit 14 is caused to continuously measure the off-state time since the previously detected on-state gas appliance turned off. In this case, the off-time measuring unit 14 measures the off-time Toff2 (FIG. 4(B)) between the on-state of the previous detection and the on-state of the next detection, which is considered to be the current detection. When the above-mentioned certification process D1 (Fig. 4 (B)) is performed using the measured value of this off time Toff2 and the result of the next selection process S3 (Fig. 4 (B)), which is considered to be the current one. In some cases, the certification process may be put on hold again and the process may be continued.

例えば、前回の選定処理Ｓ１（図４（Ｂ））の結果が図３の表３１の〈Ｂ〉の場合であり、オフ時間Ｔoff2（図４（Ｂ））が２００秒未満となり、今回とみなされる次回の選定処理Ｓ３（図４（Ｂ））の結果が、乾燥機に選定、または乾燥機を含む複数の種類に選定された場合には、上記（２）の場合に相当し、前回オン状態を検出したガス器具の種類を乾燥機に認定する認定処理Ｄ１（図４（Ｂ））を行う。また、前回の選定処理Ｓ１（図４（Ｂ））の結果が図３の表３１の〈Ｂ〉の場合であり、オフ時間Ｔoff2（図４（Ｂ））が２００秒以上、１２分未満である場合には、上記（３）の場合に相当し、今回とみなされる次回の選定処理Ｓ３（図４（Ｂ））の結果にかかわらず、前回オン状態を検出したガス器具の種類は乾燥機ではないと認定する認定処理Ｄ１（図４（Ｂ））を行う。また、前回の選定処理Ｓ１（図４（Ｂ））の結果が図３の表３１の〈Ｂ〉の場合であり、オフ時間Ｔoff2（図４（Ｂ））が２００秒未満となり、今回とみなされる次回の選定処理Ｓ３（図４（Ｂ））の結果が、乾燥機以外の１つまたは複数の種類（他器具、ファンヒータ、またはファンヒータ及び他器具）に選定された場合には、再度（４）の場合に相当し、再度、認定処理が保留され、継続処理となる。また、前回の選定処理Ｓ１（図４（Ｂ））の結果が図３の表３１の〈Ｂ〉の場合であり、オフ時間Ｔoff2（図４（Ｂ））を計測中に、計測時間が１２分以上になった場合には、後述の（１０）の場合に相当し、前回オン状態を検出したガス器具の種類はファンヒータおよび乾燥機のいずれでもないと認定する認定処理を行う。 For example, if the result of the previous selection process S1 (FIG. 4 (B)) is <B> in Table 31 of FIG. If the result of the next selection process S3 (Fig. 4 (B)) is that the dryer is selected or multiple types including the dryer are selected, this corresponds to the case (2) above, and Certification processing D1 (FIG. 4(B)) is performed to certify the type of gas appliance whose condition has been detected as a dryer. In addition, if the result of the previous selection process S1 (FIG. 4 (B)) is <B> in Table 31 of FIG. In some cases, this corresponds to case (3) above, and regardless of the result of the next selection process S3 (Fig. 4 (B)), which is considered to be the current one, the type of gas appliance whose ON state was detected last time is the dryer. Certification processing D1 (FIG. 4(B)) is performed to certify that this is not the case. In addition, if the result of the previous selection process S1 (Figure 4 (B)) is <B> in Table 31 of Figure 3, the off time Toff2 (Figure 4 (B)) is less than 200 seconds, and it is considered as the current selection process. If the result of the next selection process S3 (Fig. 4 (B)) is that one or more types (other appliances, fan heaters, or fan heaters and other appliances) other than the dryer are selected, the process will be performed again. Corresponding to case (4), the certification process is put on hold again and becomes a continuation process. Also, the result of the previous selection process S1 (FIG. 4(B)) is <B> in Table 31 of FIG. 3, and while measuring the off time Toff2 (FIG. 4(B)), If the time exceeds 10 minutes, this corresponds to the case (10) described below, and a certification process is performed to certify that the type of gas appliance whose ON state was detected last time is neither a fan heater nor a dryer.

なお、前回の選定処理Ｓ１（図４（Ｂ））の結果が図３の表３１の〈Ｃ〉の場合には、後述の（５）、（９）、（１０）の場合も考慮して、上記と同様に考えればよい。 In addition, if the result of the previous selection process S1 (FIG. 4(B)) is <C> in Table 31 of FIG. , you can think of it in the same way as above.

（５）器具認定部１５は、種類選定部１３による前回の選定処理Ｓ１（図４（Ａ））の結果が、図３の表３１の〈Ｃ〉の場合において、すなわち、少なくともファンヒータと乾燥機とを含む複数の種類が選定された場合において、オフ時間計測部１４により計測されるオフ時間Ｔoff1（図４（Ａ））が２００秒以上、１２分未満であり、かつ、種類選定部１３による今回の選定処理Ｓ２（図４（Ａ））の結果が、ファンヒータに選定、またはファンヒータを含む複数の種類に選定された場合には、前回オン状態を検出したガス器具の種類をファンヒータに認定する認定処理Ｄ１（図４（Ａ））を行う。 (5) When the result of the previous selection process S1 (FIG. 4(A)) by the type selection section 13 is <C> in Table 31 of FIG. In the case where a plurality of types including the machine are selected, the off time Toff1 (FIG. 4(A)) measured by the off time measurement unit 14 is 200 seconds or more and less than 12 minutes, and the type selection unit 13 If the result of the current selection process S2 (FIG. 4(A)) is that the fan heater is selected or multiple types including the fan heater are selected, the type of gas appliance that was last detected to be on is selected as the fan heater. Certification processing D1 (FIG. 4(A)) for certification as a heater is performed.

（６）器具認定部１５は、種類選定部１３による前回の選定処理Ｓ１（図４（Ａ））の結果が、図３の表３１の〈Ａ〉の場合において、すなわち、ファンヒータと他器具（ファンヒータ及び乾燥機以外の種類）とに選定された場合において、オフ時間計測部１４により計測されるオフ時間Ｔoff1（図４（Ａ））が２００秒以上、１２分未満であり、かつ、種類選定部１３による今回の選定処理Ｓ２（図４（Ａ））の結果が、ファンヒータに選定、またはファンヒータを含む複数の種類に選定された場合には、前回オン状態を検出したガス器具の種類をファンヒータに認定する認定処理Ｄ１（図４（Ａ））を行う。 (6) When the result of the previous selection process S1 (FIG. 4(A)) by the type selection section 13 is <A> in Table 31 of FIG. (types other than fan heaters and dryers), the off time Toff1 (FIG. 4(A)) measured by the off time measurement unit 14 is 200 seconds or more and less than 12 minutes, and If the result of the current selection process S2 (FIG. 4(A)) by the type selection unit 13 is that the fan heater is selected or multiple types including the fan heater are selected, the gas appliance whose ON state was detected last time is Certification processing D1 (FIG. 4(A)) is performed to certify the type of fan heater.

（７）器具認定部１５は、種類選定部１３による前回の選定処理Ｓ１（図４（Ａ））の結果が、図３の表３１の〈Ａ〉の場合において、オフ時間計測部１４により計測されるオフ時間Ｔoff1（図４（Ａ））が２００秒未満であり、かつ、種類選定部１３による今回の選定処理Ｓ２（図４（Ａ））の結果が、ファンヒータに選定、またはファンヒータを含む複数の種類に選定された場合には、前回オン状態を検出したガス器具の種類はファンヒータではないと認定する認定処理Ｄ１（図４（Ａ））を行う。ここで、前回の選定処理Ｓ１においてファンヒータ以外で選定された他器具として、１つの種類が選定されている場合には、当該選定されている１つの種類が前回オン状態を検出したガス器具の種類であると認定するようにしてもよい。 (7) When the result of the previous selection process S1 (FIG. 4(A)) by the type selection section 13 is <A> in Table 31 of FIG. The off time Toff1 (FIG. 4(A)) is less than 200 seconds, and the result of the current selection process S2 (FIG. 4(A)) by the type selection unit 13 is that the fan heater is selected, or the fan heater is selected as the fan heater. If the type is selected as one of a plurality of types including , a certification process D1 (FIG. 4(A)) is performed to certify that the type of gas appliance whose ON state was detected last time is not a fan heater. Here, if one type is selected as other appliances other than the fan heater in the previous selection process S1, the selected one type is the gas appliance whose ON state was detected last time. It is also possible to recognize that it is a type.

（８）器具認定部１５は、種類選定部１３による前回の選定処理Ｓ１（図４（Ｂ））の結果が、図３の表３１の〈Ａ〉の場合において、オフ時間計測部１４により計測されるオフ時間Ｔoff1（図４（Ｂ））が１２分未満（２００秒未満の場合も含む）であり、かつ、種類選定部１３による今回の選定処理Ｓ２（図４（Ｂ））の結果が、ファンヒータ以外の１つまたは複数の種類（他器具、乾燥機、または乾燥機及び他器具）に選定された場合には、上記（４）の場合と同様、種類選定部１３による前回検出のオン状態のガス器具はオフ状態が継続していると判断し、認定処理を行わずに保留とし、種類選定部１３による次回検出のオン状態を今回検出のオン状態とみなす継続処理を行うとともに、オフ時間計測部１４に前回検出のオン状態のガス器具がオフ状態になってからのオフ状態の時間を継続して計測させる。この後の処理についても上記（４）の場合と同様であり、認定処理Ｄ１（図４（Ｂ））が行われる場合もあるし、再度、認定処理が保留され、継続処理となる場合もある。 (8) When the result of the previous selection process S1 (FIG. 4(B)) by the type selection section 13 is <A> in Table 31 of FIG. The off time Toff1 (FIG. 4(B)) is less than 12 minutes (including the case of less than 200 seconds), and the result of the current selection process S2 (FIG. 4(B)) by the type selection unit 13 is , if one or more types (other appliances, dryers, or dryers and other appliances) other than the fan heater are selected, the previous detection by the type selection unit 13 is performed as in the case of (4) above. It is determined that the gas appliance in the ON state continues to be in the OFF state, and is put on hold without performing certification processing, and a continuation process is performed in which the ON state detected next time by the type selection unit 13 is regarded as the ON state detected this time. The off-time measuring section 14 is made to continuously measure the off-state time after the previously detected on-state gas appliance turned off. The subsequent processing is also the same as in case (4) above, and certification processing D1 (Figure 4 (B)) may be performed, or certification processing may be suspended again and continued processing may occur. .

（９）器具認定部１５は、種類選定部１３による前回の選定処理Ｓ１（図４（Ｂ））の結果が、図３の表３１の〈Ｃ〉の場合において、オフ時間計測部１４により計測されるオフ時間Ｔoff1（図４（Ｂ））が２００秒以上、１２分未満であり、かつ、種類選定部１３による今回の選定処理Ｓ２（図４（Ｂ））の結果が、ファンヒータ以外の１つまたは複数の種類（他器具、乾燥機、または乾燥機及び他器具）に選定された場合には、上記（４）の場合と同様、種類選定部１３による前回検出のオン状態のガス器具はオフ状態が継続していると判断し、認定処理を行わずに保留とし、種類選定部１３による次回検出のオン状態を今回検出のオン状態とみなす継続処理を行うとともに、オフ時間計測部１４に前回検出のオン状態のガス器具がオフ状態になってからのオフ状態の時間を継続して計測させる。この後の処理についても上記（４）の場合と同様であり、認定処理Ｄ１（図４（Ｂ））が行われる場合もあるし、再度、認定処理が保留され、継続処理となる場合もある。 (9) When the result of the previous selection process S1 (FIG. 4(B)) by the type selection section 13 is <C> in Table 31 of FIG. The off time Toff1 (FIG. 4(B)) is 200 seconds or more and less than 12 minutes, and the result of the current selection process S2 (FIG. 4(B)) by the type selection unit 13 is When one or more types (other appliances, dryers, or dryers and other appliances) are selected, the gas appliances in the ON state detected last time by the type selection unit 13, as in the case of (4) above, are selected. determines that the off state continues, and suspends the certification process without performing the certification process, performs a continuation process that regards the on state detected next time by the type selection unit 13 as the on state detected this time, and the off time measurement unit 14 to continuously measure the off-state time since the last detected on-state gas appliance turned off. The subsequent processing is also the same as in case (4) above, and certification processing D1 (Figure 4 (B)) may be performed, or certification processing may be suspended again and continued processing may occur. .

（１０）器具認定部１５は、種類選定部１３による前回の選定処理Ｓ１の結果が、図３の表３１の〈Ａ〉、〈Ｂ〉、〈Ｃ〉のいずれかの場合において、すなわち、ファンヒータおよび／または乾燥機を含む複数の種類に選定された場合において、オフ時間計測部１４により計測中のオフ時間が１２分以上になった場合には、前回オン状態を検出したガス器具の種類はファンヒータおよび乾燥機のいずれでもないと認定する認定処理を行う。 (10) If the result of the previous selection process S1 by the type selection unit 13 is <A>, <B>, or <C> in Table 31 of FIG. In the case where multiple types including heaters and/or dryers are selected, if the off time measured by the off time measurement unit 14 is 12 minutes or more, the type of gas appliance whose on state was detected last time is determined. undergoes a certification process to certify that the product is neither a fan heater nor a dryer.

本実施形態では、器具認定部１５が、種類選定部１３において前回検出のオン状態のガス器具の種類が第１種類（例えばファンヒータ）および／または第２種類（例えば乾燥機）を含む複数の種類に選定された場合に、この選定結果と、オフ時間計測部１４で計測されるオフ状態の時間と、このオフ状態のあとに種類選定部１３により検出される今回検出のオン状態のガス器具の種類の選定結果とに基づいて、前回検出のオン状態のガス器具の種類を１つに認定する処理を含む認定処理を行うことができる。よって、ガス器具の動作の有無を検知するための検知装置を設けることなく、ガス器具の種類の判別の精度を向上させることができる。 In the present embodiment, the appliance certification unit 15 selects a plurality of gas appliances whose types of gas appliances that were previously detected in the ON state include a first type (for example, a fan heater) and/or a second type (for example, a dryer) in the type selection unit 13. If the type is selected, the selection result, the off-state time measured by the off-time measurement unit 14, and the currently detected on-state gas appliance detected by the type selection unit 13 after the off-state Based on the selection result of the type, it is possible to perform a certification process including a process of certifying the type of the gas appliance in the ON state detected last time as one type. Therefore, the accuracy of determining the type of gas appliance can be improved without providing a detection device for detecting whether or not the gas appliance is in operation.

なお、本実施形態では、ガスメータ１単体でガス器具判別装置を構成するようにしたが、これに限らない。例えば、流量計測部１１で一定時間間隔で計測されるガス流量データを、ガスメータ１から監視センタの監視装置へ送信し、この監視装置に種類選定部１３、オフ時間計測部１４および器具認定部１５の機能を持たせるように構成してもよい。 In addition, in this embodiment, the gas appliance discrimination device was configured by the gas meter 1 alone, but the present invention is not limited to this. For example, gas flow rate data measured by the flow rate measurement unit 11 at regular time intervals is transmitted from the gas meter 1 to a monitoring device in a monitoring center, and the monitoring device is provided with a type selection unit 13, an off-time measurement unit 14, and an appliance certification unit 15. It may be configured to have the following functions.

上記説明から、当業者にとっては、本発明の多くの改良や他の実施形態が明らかである。従って、上記説明は、例示としてのみ解釈されるべきであり、本発明を実行する最良の態様を当業者に教示する目的で提供されたものである。本発明の精神を逸脱することなく、その構造及び／又は機能の詳細を実質的に変更できる。 From the above description, many modifications and other embodiments of the invention will be apparent to those skilled in the art. Accordingly, the above description is to be construed as illustrative only, and is provided for the purpose of teaching those skilled in the art the best mode of carrying out the invention. Substantial changes may be made in the structural and/or functional details thereof without departing from the spirit of the invention.

本発明は、ガス器具の動作の有無を検知するための検知装置を設けることなく、ガス器具の種類の判別の精度を向上させることができるガス器具判別装置等として有用である。 INDUSTRIAL APPLICATION This invention is useful as a gas appliance discrimination|determination apparatus etc. which can improve the accuracy of discrimination|determination of the type of gas appliance, without providing a detection device for detecting the presence or absence of operation|movement of a gas appliance.

１ ガスメータ
１０ 流路
１１ 流量計測部
１２ 制御装置
１３ 種類選定部
１４ オフ時間計測部
１５ 器具認定部
２１～２３ ガス器具 1 Gas meter 10 Flow path 11 Flow rate measurement section 12 Control device 13 Type selection section 14 Off time measurement section 15 Appliance certification section 21 to 23 Gas appliance

Claims (11)

動作状態であるオン状態と不動作状態であるオフ状態とを繰り返す断続動作による運転を行い、オフ状態の時間が第１の所定時間以上、第２の所定時間未満である第１種類のガス器具と、オン状態とオフ状態とを繰り返す断続動作による運転を行い、オフ状態の時間が前記第１の所定時間未満である第２種類のガス器具とを少なくとも含む複数の種類のガス器具へガスを供給する共通の流路におけるガス流量を一定時間間隔で計測する流量計測部と、
前記流量計測部で計測されるガス流量の変化に基づいて任意の前記ガス器具のオン状態を検出し、オン状態を検出するたびに、このオン状態の期間におけるガス流量の変化に基づいて当該オン状態の前記ガス器具の種類を１つまたは複数選定する種類選定部と、
前記種類選定部において、オン状態の前記ガス器具の種類が第１種類および／または第２種類を含む複数の種類に選定された場合に、当該ガス器具のオン状態の終了後に続くオフ状態の時間を計測するオフ時間計測部と、
前記種類選定部において、前回検出のオン状態の前記ガス器具の種類が前記第１種類および／または前記第２種類を含む複数の種類に選定された場合に、この選定結果と、前記オフ時間計測部で計測される前回検出のオン状態の終了後に続くオフ状態の時間と、このオフ状態のあとに前記種類選定部により検出される今回検出のオン状態の前記ガス器具の種類の選定結果とに基づいて、前回検出のオン状態の前記ガス器具の種類を１つに認定する処理を含む認定処理を行う器具認定部と、を備えた、
ガス器具判別装置。 A first type of gas appliance that operates in an intermittent manner that repeats an on state that is an operating state and an off state that is an inactive state, and whose off state time is at least a first predetermined time and less than a second predetermined time. and a second type of gas appliance, which operates in an intermittent manner that repeats an on state and an off state, and whose off state time is less than the first predetermined time. a flow rate measurement unit that measures the gas flow rate in the common supply flow path at regular time intervals;
The on-state of any of the gas appliances is detected based on the change in the gas flow rate measured by the flow rate measuring section, and each time the on-state is detected, the on-state of the gas appliance is detected based on the change in the gas flow rate during the on-state period. a type selection unit that selects one or more types of the gas appliance in the state;
In the case where the type selection unit selects the type of the gas appliance in the on state as one of a plurality of types including the first type and/or the second type, the period of the off state that continues after the end of the on state of the gas appliance; an off-time measurement section that measures the
In the case where the type selection unit selects a plurality of types including the first type and/or the second type as the type of the gas appliance in the ON state detected last time, the selection result and the OFF time measurement are selected. the time of the off state that continues after the end of the on state of the previous detection measured by the section, and the selection result of the type of the gas appliance in the on state of the current detection detected by the type selection section after this off state; an appliance certification unit that performs a certification process including a process of certifying the type of the gas appliance in the ON state detected last time as one based on the above-mentioned information.
Gas appliance identification device. 前記器具認定部は、
前記種類選定部において、前回検出のオン状態の前記ガス器具の種類が少なくとも前記第１種類と前記第２種類とを含む複数の種類に選定された場合であって、前記オフ時間計測部で計測される前回検出のオン状態と今回検出のオン状態との間のオフ状態の時間が第１の所定時間未満であり、かつ、前記種類選定部において、今回検出のオン状態の前記ガス器具の種類が、前記第２種類に選定、または前記第２種類を含む複数の種類に選定された場合には、前回検出のオン状態の前記ガス器具の種類を前記第２種類に認定する前記認定処理を行うよう構成された、
請求項１に記載のガス器具判別装置。 The equipment certification department is
In the case where the type selection section selects a plurality of types of the gas appliance in the ON state detected last time including at least the first type and the second type, and the off time measurement section The time in the off state between the on state of the previous detection and the on state of the current detection is less than a first predetermined time, and the type selection unit determines the type of the gas appliance in the on state of the current detection. is selected as the second type, or selected as a plurality of types including the second type, performs the certification process of certifying the type of the gas appliance in the ON state detected last time as the second type. configured to do
The gas appliance discrimination device according to claim 1. 前記器具認定部は、
前記種類選定部において、前回検出のオン状態の前記ガス器具の種類が前記第１及び第２種類以外の種類と前記第２種類とに選定された場合であって、前記オフ時間計測部で計測される前回検出のオン状態と今回検出のオン状態との間のオフ状態の時間が第１の所定時間未満であり、かつ、前記種類選定部において、今回検出のオン状態の前記ガス器具の種類が、前記第２種類に選定、または前記第２種類を含む複数の種類に選定された場合には、前回検出のオン状態の前記ガス器具の種類を前記第２種類に認定する前記認定処理を行うよう構成された、
請求項１または２に記載のガス器具判別装置。 The equipment certification department is
In the case where the type selection section selects the type of the gas appliance in the ON state detected last time as a type other than the first and second types and the second type, the off time measurement section The time in the off state between the on state of the previous detection and the on state of the current detection is less than a first predetermined time, and the type selection unit determines the type of the gas appliance in the on state of the current detection. is selected as the second type, or selected as a plurality of types including the second type, performs the certification process of certifying the type of the gas appliance in the ON state detected last time as the second type. configured to do
The gas appliance discrimination device according to claim 1 or 2. 前記器具認定部は、
前記種類選定部において、前回検出のオン状態の前記ガス器具の種類が前記第１及び第２種類以外の種類と前記第２種類とに選定された場合であって、前記オフ時間計測部で計測される前回検出のオン状態と今回検出のオン状態との間のオフ状態の時間が第１の所定時間以上、第２の所定時間未満の場合には、前回検出のオン状態の前記ガス器具の種類は第２種類ではないと認定する前記認定処理を行うよう構成された、
請求項１～３のいずれかに記載のガス器具判別装置。 The equipment certification department is
In the case where the type selection section selects the type of the gas appliance in the ON state detected last time as a type other than the first and second types and the second type, the off time measurement section If the time period in the off state between the on state of the previous detection and the on state of the current detection is greater than or equal to the first predetermined time and less than the second predetermined time, the gas appliance in the on state of the previous detection is configured to perform the certification process of certifying that the type is not the second type;
The gas appliance discrimination device according to any one of claims 1 to 3. 前記器具認定部は、
前記種類選定部において、前回検出のオン状態の前記ガス器具の種類が少なくとも前記第２種類を含む複数の種類に選定された場合であって、前記オフ時間計測部で計測される前回検出のオン状態と今回検出のオン状態との間のオフ状態の時間が第１の所定時間未満であり、かつ、前記種類選定部において、今回検出のオン状態の前記ガス器具の種類が、前記第２種類以外の１つまたは複数の種類に選定された場合には、前記認定処理を行わずに、前記種類選定部による次回検出のオン状態を今回検出のオン状態とみなす継続処理を行うとともに、前記オフ時間計測部に前回検出のオン状態の前記ガス器具がオフ状態になってからのオフ状態の時間を継続して計測させるよう構成された、
請求項１～４のいずれかに記載のガス器具判別装置。 The equipment certification department is
In the case where the type selection unit selects a plurality of types of the gas appliance in the previously detected ON state, including at least the second type, and the previously detected ON state measured by the OFF time measurement unit The off state time between the on state and the currently detected on state is less than a first predetermined time, and the type selection unit determines that the type of the gas appliance in the currently detected on state is the second type. If one or more types other than The time measuring unit is configured to continuously measure the time period in which the gas appliance in the ON state detected last time is in the OFF state after the gas appliance is in the OFF state.
The gas appliance discrimination device according to any one of claims 1 to 4. 前記器具認定部は、
前記種類選定部において、前回検出のオン状態の前記ガス器具の種類が少なくとも前記第１種類と前記第２種類とを含む複数の種類に選定された場合であって、前記オフ時間計測部で計測される前回検出のオン状態と今回検出のオン状態との間のオフ状態の時間が第１の所定時間以上、第２の所定時間未満であり、かつ、前記種類選定部において、今回検出のオン状態の前記ガス器具の種類が、前記第１種類に選定、または前記第１種類を含む複数の種類に選定された場合には、前回検出のオン状態の前記ガス器具の種類を前記第１種類に認定する前記認定処理を行うよう構成された、
請求項１～５のいずれかに記載のガス器具判別装置。 The equipment certification department is
In the case where the type selection section selects a plurality of types of the gas appliance in the ON state detected last time including at least the first type and the second type, and the off time measurement section The time of the OFF state between the ON state of the previous detection and the ON state of the current detection is greater than or equal to the first predetermined time and less than the second predetermined time, and the type selection section determines that the ON state of the current detection is If the type of the gas appliance in the state is selected as the first type or a plurality of types including the first type, the type of the gas appliance in the previously detected ON state is the first type. configured to perform the certification process to certify the
The gas appliance discrimination device according to any one of claims 1 to 5. 前記器具認定部は、
前記種類選定部において、前回検出のオン状態の前記ガス器具の種類が前記第１及び第２種類以外の種類と前記第１種類とに選定された場合であって、前記オフ時間計測部で計測される前回検出のオン状態と今回検出のオン状態との間のオフ状態の時間が第１の所定時間以上、第２の所定時間未満であり、かつ、前記種類選定部において、今回検出のオン状態の前記ガス器具の種類が、前記第１種類に選定、または前記第１種類を含む複数の種類に選定された場合には、前回検出のオン状態の前記ガス器具の種類を前記第１種類に認定する前記認定処理を行うよう構成された、
請求項１～６のいずれかに記載のガス器具判別装置。 The equipment certification department is
In the case where the type selection section selects the type of the gas appliance in the ON state detected last time as a type other than the first and second types and the first type, the off time measurement section The time of the OFF state between the ON state of the previous detection and the ON state of the current detection is greater than or equal to the first predetermined time and less than the second predetermined time, and the type selection section determines that the ON state of the current detection is If the type of the gas appliance in the state is selected as the first type or a plurality of types including the first type, the type of the gas appliance in the previously detected ON state is the first type. configured to perform the certification process to certify the
The gas appliance discrimination device according to any one of claims 1 to 6. 前記器具認定部は、
前記種類選定部において、前回検出のオン状態の前記ガス器具の種類が前記第１及び第２種類以外の種類と前記第１種類とに選定された場合であって、前記オフ時間計測部で計測される前回検出のオン状態と今回検出のオン状態との間のオフ状態の時間が第１の所定時間未満であり、かつ、前記種類選定部において、今回検出のオン状態の前記ガス器具の種類が、前記第１種類に選定、または前記第１種類を含む複数の種類に選定された場合には、前回検出のオン状態の前記ガス器具の種類は第１種類ではないと認定する前記認定処理を行うよう構成された、
請求項１～７のいずれかに記載のガス器具判別装置。 The equipment certification department is
In the case where the type selection section selects the type of the gas appliance in the ON state detected last time as a type other than the first and second types and the first type, the off time measurement section The time in the off state between the on state of the previous detection and the on state of the current detection is less than a first predetermined time, and the type selection unit determines the type of the gas appliance in the on state of the current detection. is selected as the first type, or selected as a plurality of types including the first type, the certification process certifies that the type of the gas appliance in the previously detected ON state is not the first type. configured to do
The gas appliance discrimination device according to any one of claims 1 to 7. 前記器具認定部は、
前記種類選定部において、前回検出のオン状態の前記ガス器具の種類が前記第１及び第２種類以外の種類と前記第１種類とに選定された場合であって、前記オフ時間計測部で計測される前回検出のオン状態と今回検出のオン状態との間のオフ状態の時間が第２の所定時間未満であり、かつ、前記種類選定部において、今回検出のオン状態の前記ガス器具の種類が、前記第１種類以外の１つまたは複数の種類に選定された場合には、前記認定処理を行わずに、前記種類選定部による次回検出のオン状態を今回検出のオン状態とみなす継続処理を行うとともに、前記オフ時間計測部に前回検出のオン状態の前記ガス器具がオフ状態になってからのオフ状態の時間を継続して計測させるよう構成された、
請求項１～８のいずれかに記載のガス器具判別装置。 The equipment certification department is
In the case where the type selection section selects the type of the gas appliance in the ON state detected last time as a type other than the first and second types and the first type, the off time measurement section The time of the off state between the on state of the previous detection and the on state of the current detection is less than a second predetermined time, and the type selection unit determines the type of the gas appliance in the on state of the current detection. is selected as one or more types other than the first type, a continuation process in which the on state of the next detection by the type selection unit is regarded as the on state of the current detection without performing the certification process. and is configured to cause the off-time measuring unit to continuously measure the off-state time after the gas appliance that was previously detected in the on-state turned off.
The gas appliance discrimination device according to any one of claims 1 to 8. 前記器具認定部は、
前記種類選定部において、前回検出のオン状態の前記ガス器具の種類が少なくとも前記第１種類と前記第２種類とを含む複数の種類に選定された場合であって、前記オフ時間計測部で計測される前回検出のオン状態と今回検出のオン状態との間のオフ状態の時間が第１の所定時間以上、第２の所定時間未満であり、かつ、前記種類選定部において、今回検出のオン状態の前記ガス器具の種類が、前記第１種類以外の１つまたは複数の種類に選定された場合には、前記認定処理を行わずに、前記種類選定部による次回検出のオン状態を今回検出のオン状態とみなす継続処理を行うとともに、前記オフ時間計測部に前回検出のオン状態の前記ガス器具がオフ状態になってからのオフ状態の時間を継続して計測させるよう構成された、
請求項１～９のいずれかに記載のガス器具判別装置。 The equipment certification department is
In the case where the type selection section selects a plurality of types of the gas appliance in the ON state detected last time including at least the first type and the second type, and the off time measurement section The time of the OFF state between the ON state of the previous detection and the ON state of the current detection is greater than or equal to the first predetermined time and less than the second predetermined time, and the type selection section determines that the ON state of the current detection is If the type of the gas appliance in the state is selected as one or more types other than the first type, the type selection section detects the on state to be detected next time without performing the certification process. The apparatus is configured to perform a continuation process of treating the gas appliance as being in an on state, and to cause the off time measurement section to continuously measure the time period in which the gas appliance in the on state detected last time has been in the off state since the gas appliance was in the off state.
The gas appliance discrimination device according to any one of claims 1 to 9. 前記器具認定部は、
前記種類選定部において、前回検出のオン状態の前記ガス器具の種類が前記第１種類および／または前記第２種類を含む複数の種類に選定された場合に、前回検出のオン状態の終了後に続くオフ状態の時間を前記オフ時間計測部によって計測中に、この計測中の時間が第２の所定時間以上になった場合には、前回検出のオン状態の前記ガス器具の種類は第１種類および第２種類のいずれでもないと認定する前記認定処理を行うよう構成された、
請求項１～１０のいずれかに記載のガス器具判別装置。 The equipment certification department is
If the type selection unit selects the type of the gas appliance in the previously detected ON state as one of a plurality of types including the first type and/or the second type, the gas appliance continues after the previously detected ON state ends. If the off-state time is being measured by the off-time measurement unit and the time being measured exceeds a second predetermined time, the type of the gas appliance in the on-state detected last time is the first type and the second predetermined time. configured to perform the certification process of certifying that it is not one of the second types;
The gas appliance discrimination device according to any one of claims 1 to 10.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005156542A (en) 2003-10-31 2005-06-16 Tokyo Gas Co Ltd Gas meter
JP2008107190A (en) 2006-10-25 2008-05-08 Matsushita Electric Ind Co Ltd Flow measurement instrument
JP2008197075A (en) 2007-01-17 2008-08-28 Matsushita Electric Ind Co Ltd Flow rate measurement device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005156542A (en) 2003-10-31 2005-06-16 Tokyo Gas Co Ltd Gas meter
JP2008107190A (en) 2006-10-25 2008-05-08 Matsushita Electric Ind Co Ltd Flow measurement instrument
JP2008197075A (en) 2007-01-17 2008-08-28 Matsushita Electric Ind Co Ltd Flow rate measurement device

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