JP5195566B2 - Flow rate measuring device, fluid supply system and program using the same - Google Patents

Flow rate measuring device, fluid supply system and program using the same Download PDF

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JP5195566B2
JP5195566B2 JP2009071315A JP2009071315A JP5195566B2 JP 5195566 B2 JP5195566 B2 JP 5195566B2 JP 2009071315 A JP2009071315 A JP 2009071315A JP 2009071315 A JP2009071315 A JP 2009071315A JP 5195566 B2 JP5195566 B2 JP 5195566B2
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flow rate
appliance
gas
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rate measuring
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JP2010223760A (en
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康雄 木場
龍志 岩本
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Panasonic Corp
Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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Description

本発明は、ガスの配管流路に接続されたガス器具の動作を判別して器具別の使用流量計測や器具別の保安処理を行う流量計測装置および流体供給システムに関するものである。   The present invention relates to a flow rate measuring device and a fluid supply system that determine the operation of a gas appliance connected to a gas pipe flow path and perform a flow rate measurement for each appliance and a security process for each appliance.

従来、この種の流量計測装置は、図３に示すように、ガス流路に流れるガス流量を計測するガス流量計測手段１と、この計測結果より流量の増加を検出する流量増加検出手段２と、この流量増加に伴うガス流量の瞬時増減変化を検出する流量増減検出手段３と、前記瞬時増減変化検出時に新たなガス燃焼器具の使用開始を判定する器具判定手段４と、前記流量増加検出手段で検出されたガス流量の増加分を、前記新たなガス燃焼器具の使用開始に伴うガス流量の増加分として登録する流量登録手段５とを備えていた（例えば、特許文献１参照）。   Conventionally, as shown in FIG. 3, this type of flow rate measuring apparatus includes a gas flow rate measuring unit 1 that measures the flow rate of gas flowing in a gas flow path, and a flow rate increase detecting unit 2 that detects an increase in flow rate from the measurement result. The flow rate increase / decrease detection means 3 for detecting the instantaneous increase / decrease change of the gas flow accompanying the increase of the flow rate, the instrument determination means 4 for determining the start of use of a new gas combustion instrument when the instantaneous increase / decrease change is detected, and the flow rate increase detection means The flow rate registration means 5 for registering the increase in the gas flow rate detected in step 1 as the increase in the gas flow rate associated with the start of use of the new gas combustion appliance (see, for example, Patent Document 1).

上記構成によって、新たにガス燃焼器具の使用を開始した場合にガス流量は瞬時に増減変化して安定したガス流量になる事に着目し、増減変化を判定時に新たなガス燃焼器具の使用開始を判定することで、簡易な方法で新たなガス燃焼器具の使用開始を判定するとともに、流量の減少変化に基づいて使用停止を判定することができるものである。
特開２００２−１７４５４２号公報 With the above configuration, paying attention to the fact that the gas flow rate increases and decreases instantly when it starts to use a new gas combustion device, it becomes a stable gas flow rate. By determining, the start of use of a new gas combustion appliance can be determined by a simple method, and stop of use can be determined based on a decrease in the flow rate.
JP 2002-174542 A

しかしながら、前記従来の構成では、ガス器具の使用開始や使用停止を常時監視していなければならず、温度や炎の大きさの自動火力調節のあるガス機器では、一定のガス流量のみで稼動することは少なく、自動調節などでの変化を誤判別して新たなガス機器と登録すると信頼感を失いかねない。また、判別処理に要する消費電力が発生し、電池で駆動するガスメータでは、電池容量を大きくしなければならないという課題があった。   However, in the conventional configuration, it is necessary to constantly monitor the start and stop of use of gas appliances, and gas equipment with automatic thermal power control of temperature and flame size operates only at a constant gas flow rate. There are few cases, and misregistration of changes due to automatic adjustment, etc., and registering as a new gas appliance can cause loss of confidence. In addition, the power consumption required for the discrimination process is generated, and the gas meter driven by the battery has a problem that the battery capacity has to be increased.

前記従来の課題を解決するために、流路に流れる流体の流量を計測する流量計測手段と、前記流量計測手段が所定時間間隔ごとに計測した使用流量の変動から使用されている器具を判別する器具判別手段と、前記器具判別手段の動作の開始、停止を、使用流量の変化を基に判定して切り換える器具判別動作切換判定手段を備え、前記器具判別動作切換判定手段は、前記器具判別手段で使用されていると判断された器具の最大流量に基づき設定された流量以上を前記流量計測手段で計測した場合に前記器具判別手段の動作を開始させることを特徴とするものである。
In order to solve the conventional problem, a flow rate measuring unit that measures a flow rate of a fluid flowing in a flow path and a device that is used are determined based on fluctuations in a used flow rate that the flow rate measuring unit measures at predetermined time intervals. and appliance determination means, the start of operation of the appliance determination unit, a stop, comprising an appliance determination operation switch determination means for switching is determined based on the change in the flow rate used, the appliance determination operation switching determination unit, the appliance determination means When the flow rate measuring unit measures a flow rate that is greater than or equal to the maximum flow rate of the device that is determined to be used, the operation of the device discriminating unit is started .

これによって、ガス器具の器具判別動作を切り換えることができ、自動火力調節ガス器具が使用されているときは、器具判別動作を条件によって停止させるので、使用していない器具を誤判別することがなくなり、器具判別の信頼感を損なうことがないと共に、器具判別の判定動作処理を停止させることができるので、消費電力を低減することができ、電池で駆動されるガスメータの場合は長期間の動作を可能とすることができる。   As a result, it is possible to switch the appliance discrimination operation of the gas appliance, and when the automatic thermal power control gas appliance is used, the appliance discrimination operation is stopped depending on the condition, so that the appliance that is not being used is not erroneously discriminated. The instrument discrimination reliability is not impaired, and the instrument discrimination judgment process can be stopped, so that power consumption can be reduced. In the case of a gas meter driven by a battery, a long-term operation is possible. Can be possible.

本発明の流量計測装置は、器具判別手段の動作を切り換える器具判別動作切換手段を備えることで、ガス器具の器具判別判定動作を切り換えることができ、器具判別判定動作を停止させたりすることができるので、使用していない器具を誤判別することがなくなり、器具判別の信頼感を損なうことがないと共に、器具判別の動作処理を停止させることができるので、消費電力を低減することができる。   The flow rate measuring device of the present invention is provided with the appliance discriminating operation switching means for switching the operation of the appliance discriminating means, so that the appliance discriminating operation of the gas appliance can be switched and the appliance discriminating operation can be stopped. As a result, it is possible to prevent erroneous determination of an appliance that is not being used, without impairing the reliability of appliance discrimination, and to stop the operation processing of appliance discrimination, thereby reducing power consumption.

第１の発明は、流路に流れる流体の流量を計測する流量計測手段と、前記流量計測手段が所定時間間隔ごとに計測した使用流量の変動から使用されている器具を判別する器具判別手段と、前記器具判別手段の動作の開始、停止を、使用流量の変化を基に判定して切り換える器具判別動作切換判定手段を備え、前記器具判別動作切換判定手段は、前記器具判別手段で使用されていると判断された器具の最大流量に基づき設定された流量以上を前記流量計測手段で計測した場合に前記器具判別手段の動作を開始させる構成とすることにより、ガス器具の器具判別判定動作を切り換えることができ、器具判別判定動作を停止させたりすることができるので、使用していない器具を誤判別することがなくなり、器具判別の信頼感を損なうことがないと共に、器具判別の動作処理を停止させることができるので、消費電力を低減することができる。 The first invention comprises a flow rate measuring means for measuring the flow rate of the fluid flowing in the flow path, and an instrument discriminating means for discriminating the instrument being used from the fluctuations in the used flow rate measured at predetermined time intervals by the flow rate measuring means. The appliance discriminating means is provided with appliance discriminating operation switching judgment means for switching the start and stop of the operation based on the change in the flow rate used , and the appliance discriminating operation switching judgment means is used by the appliance discriminating means. When the flow rate measuring means measures a flow rate that is greater than or equal to the maximum flow rate of the appliance that is determined to be present, the operation of the appliance discriminating means is started, thereby switching the appliance discriminating operation of the gas appliance. And can stop the instrument discrimination judgment operation, so that it will not misclassify instruments that are not in use and will not impair the reliability of instrument discrimination. , Since it is possible to stop the operation process of the appliance determination, it is possible to reduce power consumption.

第２の発明は、特に、第１の発明の流量計測装置を流体供給システムに利用した場合、それぞれの家庭で個別に器具判別動作を開始させたり、停止させたりすることができ、１家庭だけでなく地域全体に器具判別手段を波及することができるので、器具ガス料金の施策の普及を促進することができるとともに、ガス料金だけでなく器具判別の結果により保安機能などを設定することで安全なガス供給システムを地域全体で実現するシステムとして有効に利用することができる。   In the second invention, in particular, when the flow measuring device according to the first invention is used in the fluid supply system, the appliance discriminating operation can be started or stopped individually in each home, and only one home can be used. In addition, it is possible to spread the equipment discrimination means to the whole area, so that the spread of the equipment gas charge measures can be promoted, and the safety function etc. can be set by setting the safety function according to the result of the equipment discrimination as well as the gas charge. It can be effectively used as a system that realizes a simple gas supply system in the entire region.

第３の発明は、特に、第１の発明の流量計測装置の手段の全てもしくは一部としてコンピュータを機能させるためのプログラムである。   In particular, the third invention is a program for causing a computer to function as all or part of the means of the flow measuring device of the first invention.

以下、本発明の実施の形態について、図面を参照しながら説明する。なお、本実施の形態によって本発明が限定されるものではない。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the present embodiment.

（実施の形態１）
図１は、本発明の第１の実施の形態における流量計測装置としてのガスメータのブロック図を示すものである。 (Embodiment 1)
FIG. 1 shows a block diagram of a gas meter as a flow rate measuring apparatus according to a first embodiment of the present invention.

図１においてガスメータは、流路６に流れる流量を計測する流量計測手段としての超音波流量計７と、超音波流量計７が所定時間間隔ごとに計測した流量値を基に任意の時間間隔差分流量を求め、その基に時間間隔差分流量の特徴から流路６に接続されて使用されているガス器具１９，２０，２１を判別する器具判別手段８を備え、器具判別手段８の動作を切り換える器具判別動作切替判定手段９を備えた構成とした。ここで、１０はガス器具１９，２０，２１ごとの使用流量を算出する器具別流量算出手段、１１はガス管路、１２は流量計測装置としてのガスメータ、１３はガスを停止させたい時に流路６を遮断する流路遮断弁、１４はそれぞれの部位の動作を制御するマイコン、１５は電池、１６は表示部、１７は操作部、１８は通信部である。   In FIG. 1, the gas meter includes an ultrasonic flow meter 7 as a flow measuring means for measuring a flow rate flowing through the flow path 6, and an arbitrary time interval difference based on a flow rate value measured at predetermined time intervals by the ultrasonic flow meter 7. Based on the characteristics of the time interval differential flow rate, the flow rate is obtained, and the device discriminating means 8 for discriminating the gas appliances 19, 20, 21 used by being connected to the flow path 6 is provided, and the operation of the appliance discriminating means 8 is switched. The appliance discriminating operation switching judgment means 9 is provided. Here, 10 is a flow rate calculation means for each appliance for calculating the flow rate used for each of the gas appliances 19, 20, 21, 11 is a gas pipe, 12 is a gas meter as a flow rate measuring device, and 13 is a flow channel when it is desired to stop the gas. 6 is a microcomputer for controlling the operation of each part, 15 is a battery, 16 is a display unit, 17 is an operation unit, and 18 is a communication unit.

以上のように構成されたガスメータ１２について、以下その動作、作用を説明する。
器具判別動作切換判定手段９について説明する。 About the gas meter 12 comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.
The appliance discriminating operation switching determining means 9 will be described.

器具判別動作切換判定手段９は、各ガス器具１９，２０，２１の器具判別判定動作を切り換えることができ、器具判別判定動作を停止させたり、開始させたりすることができるものである。   The appliance discriminating operation switching determining means 9 can switch the appliance discriminating operation of each gas appliance 19, 20, and 21 and can stop or start the appliance discriminating operation.

図２に流量の変化を示す。図に示す様に、流路６に流量がない状態からいずれかのガス器具に使用が開始されることによる流量の変化があり、流量が登録されるとその流路６に流れる流量の最大値を流量計測手段から器具判別動作切替判定手段９がＱＭＡＸ１として記憶しておく。このときに、ＱＭＡＸ１が一定流量以下（例えば１１０Ｌ／ｈ）であれば、器具判別を行わないようにしてもよい。そのとき流量計測手段からの流量値を器具別流量算出手段１０にて算出され器具判別手段８にて器具が特定される。   FIG. 2 shows the change in flow rate. As shown in the figure, there is a change in flow rate due to the start of use of any gas appliance from a state where there is no flow rate in the flow path 6, and the maximum value of the flow rate flowing through the flow path 6 when the flow rate is registered. Is stored as QMAX1 by the appliance discriminating operation switching determining unit 9 from the flow rate measuring unit. At this time, if QMAX1 is equal to or less than a certain flow rate (for example, 110 L / h), the appliance discrimination may not be performed. At that time, the flow rate value from the flow rate measuring means is calculated by the flow rate calculating means 10 for each appliance, and the appliance discriminating means 8 specifies the appliance.

その後、自動火力調節などの緩やかな流量変化中（イ）は、流量計測手段から器具判別
動作切替判定手段９が流量の最小値をＱＢＡＳＥ１として記憶を更新していく。但し、ＱＢＡＳＥ１の初期値はＱＭＡＸ１としておく。 Thereafter, during a moderate flow rate change (A) such as automatic heating power adjustment, the appliance discriminating operation switching determination unit 9 updates the memory with the minimum value of the flow rate as QBASE1 from the flow rate measurement unit. However, the initial value of QBASE1 is set to QMAX1.

次に、流量が大きく急激に変化した場合に、流量計測手段からそのときに流路６を流れる流量の最大値を器具判別動作切替判定手段９がＱＭＡＸ２として記憶する。その後、器具判別動作切替判定手段９でＡ値（ＱＭＡＸ１×Ｎ％、Ｎは、器具別に決めた流量の変動幅の許容値を演算するための数値で、器具の特性で定めた数値である。）とＱＭＡＸ２の比較を行う。   Next, when the flow rate changes greatly and rapidly, the appliance discriminating operation switching determination unit 9 stores the maximum value of the flow rate flowing through the flow path 6 from the flow rate measurement unit as QMAX2. Thereafter, the A value (QMAX1 × N%, N is a numerical value for calculating an allowable value of the fluctuation range of the flow rate determined for each appliance by the appliance discriminating operation switching determination means 9, and is a numerical value determined by the characteristics of the appliance. ) And QMAX2 are compared.

そして、Ａ値の方が大きかった（図においてＡ＝Ａ１）場合、即ち、現在使用している器具の流量変化範囲内で流量が増加したと判断される場合は、既に登録されている器具の流量変化と判断し、器具判別手段８を動作させない。また、ＱＭＡＸ２の方が大きい（図においてＡ＝Ａ２）場合は、別の機器の使用が開始されたと判断し、器具別流量算出手段１０にて流量を算出し器具判別手段８を動作させて器具判別を行う。   When the A value is larger (A = A1 in the figure), that is, when it is determined that the flow rate has increased within the flow rate change range of the currently used device, It is determined that the flow rate has changed, and the appliance discrimination means 8 is not operated. If QMAX2 is larger (A = A2 in the figure), it is determined that the use of another device is started, the flow rate is calculated by the flow rate calculation unit 10 for each device, and the device determination unit 8 is operated to operate the device. Make a decision.

なお、Ａ値とＱＭＡＸ２が同じだった場合は、どちらかと決めて動作させてよい。また、Ａ値の方が大きかった場合でも、Ｂ値（ＱＭＡＸ２−ＱＢＡＳＥ１、即ち増加流量）が一定の流量以上の変化であれば（例えば２００Ｌ／ｈ）器具判別手段８を動作させてもよい。また、ＱＭＡＸ２が大きかった場合でもＢ値が一定流量以上の変化（例えば１１０Ｌ／ｈ）でなければ器具判別手段８を動作させなくても良い。また、２台目以降の器具判定動作を停止しても、すでに器具判別動作にて一台目の器具を判定している場合は、継続して器具判別の監視は行い推定している器具の確認は行う。   When the A value and QMAX2 are the same, it may be determined and operated. Even if the A value is larger, the appliance discriminating means 8 may be operated as long as the B value (QMAX2-QBASE1, that is, the increased flow rate) changes more than a certain flow rate (for example, 200 L / h). Even if QMAX2 is large, the appliance discrimination means 8 does not have to be operated unless the B value changes more than a certain flow rate (for example, 110 L / h). In addition, even if the second and subsequent device determination operations are stopped, if the first device is already determined by the device determination operation, the device determination is continuously monitored and the estimated device Confirm.

このように器具判別動作切替判定手段９が自動的に切り替えの判断を行うことにより、器具別の器具判別手段８の動作処理を停止させることで、器具判別の信頼感を損なうことがないと共に、消費電力を低減することができる。ガスメータ１２は電池１５で１０年間動作しているので、消費電力を低減することは非常に大きな意味を持ち、電池１５の容量を少なくできることでガスメータ１２の小型化にもつながり、低コスト化にも効果が波及する。   In this way, the appliance discriminating operation switching determining means 9 automatically makes a switching judgment, so that the operation processing of the appliance discriminating means 8 for each appliance is stopped, so that the reliability of appliance discrimination is not impaired, Power consumption can be reduced. Since the gas meter 12 has been operating on the battery 15 for 10 years, reducing the power consumption has a very significant meaning, and the capacity of the battery 15 can be reduced, leading to a reduction in the size of the gas meter 12 and a reduction in cost. The effect spreads.

このような流量計測装置を流体供給システムに利用した場合、それぞれの家庭で個別に器具判別動作を開始させたり、停止させたりすることができ、１家庭だけでなく地域全体に器具判別手段８を波及することができるので、器具ガス料金の施策の普及を促進することができるとともに、ガス料金だけでなく器具判別の結果により保安機能などを設定することで安全なガス供給システムを地域全体で実現するシステムとして有効に利用することができ、器具別料金などの顧客サービスを実現することができるものである。   When such a flow rate measuring device is used in a fluid supply system, the appliance discriminating operation can be started or stopped individually in each home, and the appliance discriminating means 8 is provided not only in one home but also in the entire area. As a result, it is possible to promote the spread of instrument gas charge measures, and realize a safe gas supply system for the entire region by setting safety functions based not only on gas charges but also on instrument discrimination results. It can be effectively used as a system to perform customer service such as appliance-based charges.

なお、ガスメータ１２で説明したが、工業用流量計や水道メータにおいても同様に、流量計測装置の下流側に接続された使用器具の判別や器具別使用流量の計測、器具の保安に使用することができる。   In addition, although demonstrated with the gas meter 12, it is used also for an industrial flow meter and a water meter for the discrimination of the instrument used connected to the downstream of a flow measuring device, the measurement of the flow volume used according to an instrument, and the security of an instrument. Can do.

また、器具判別の情報は、ガスを安全に供給する保安機能に用いることも可能である。その場合、器具判別動作切換手段９によって、器具判別の動作を切り換えることで、ガス器具別の保安機能も切り換えることができる。例えば、ガス器具ごとに連続使用の許可時間を設定することが可能になるが、器具判別の動作を開始したときにのみガス器具別の連続使用時間制限を有効にし、器具判別機能を停止した時は、ガス器具別の連続使用時間制限も停止することができる。このように、器具判別動作切換手段９によって、保安機能の切換えも可能となり、器具判別の動作と保安機能の連携をスムーズに行うことができる。   In addition, the appliance discrimination information can be used for a security function for safely supplying gas. In this case, the security function for each gas appliance can also be switched by switching the appliance discrimination operation by the appliance discrimination operation switching means 9. For example, it is possible to set the continuous use permission time for each gas appliance, but when the appliance discrimination operation is started, the continuous use time limit for each gas appliance is enabled and the appliance discrimination function is stopped. The continuous use time limit for each gas appliance can also be stopped. As described above, the appliance discrimination operation switching means 9 can also switch the security function, and the appliance discrimination operation and the security function can be smoothly coordinated.

また、器具判別手段８は、流量計測手段の流量値のみでガス器具を特定する方法で説明
したが、ガス器具から信号を受けてガス器具を特定する方法を用いたり、個別ガス器具の流量を計測してガス器具を特定する方法などを含め、それぞれを組み合わせた他の器具判別手段としても、器具判別動作切換手段の構成や仕組みを用いれば同様の効果が得られることは明確である。また、それぞれの器具判別手段を選択することも器具判別動作切換手段の機能として考えることもできる。 Moreover, although the apparatus discrimination | determination means 8 demonstrated by the method of specifying a gas appliance only by the flow value of a flow measurement means, the method of receiving a signal from a gas appliance and specifying a gas appliance, or the flow volume of an individual gas appliance is used. It is clear that the same effect can be obtained by using the configuration and mechanism of the appliance discriminating operation switching means as other appliance discriminating means combining them, including the method of measuring and specifying the gas appliance. In addition, selection of each appliance discriminating means can also be considered as a function of the appliance discriminating operation switching means.

以上のように、本発明にかかる流量計測装置は、ガスメータや工業用流量計や水道メータに適用することができる。   As described above, the flow rate measuring device according to the present invention can be applied to gas meters, industrial flow meters, and water meters.

本発明の実施形態１における流量計測装置のブロック図The block diagram of the flow measuring device in Embodiment 1 of the present invention. 器具判別用の流量パターン図Flow pattern diagram for device discrimination 従来の流量計測装置のブロック図Block diagram of a conventional flow measurement device

６ 流路
７ 超音波流量計（流量計測手段）
８ 器具判別手段
９ 器具判別動作切換手段
１１ ガス管路
１２ ガスメータ（流量計測装置）
１３ 流路遮断弁
１４ マイコン
１５ 電池
１６ 表示部
１７ 操作部
１８ 通信部
１９、２０、２１ ガス器具 6 Channel 7 Ultrasonic flow meter (flow rate measuring means)
8 Appliance discriminating means 9 Appliance discriminating operation switching means 11 Gas pipeline 12 Gas meter (flow rate measuring device)
13 flow path shutoff valve 14 microcomputer 15 battery 16 display unit 17 operation unit 18 communication unit 19, 20, 21 gas appliance

Claims (3)

流路に流れる流体の流量を計測する流量計測手段と、
前記流量計測手段が所定時間間隔ごとに計測した使用流量の変動から使用されている器具を判別する器具判別手段と、
前記器具判別手段の動作の開始、停止を、使用流量の変化を基に判定して切り換える器具判別動作切換判定手段を備え、
前記器具判別動作切換判定手段は、前記器具判別手段で使用されていると判断された器具の最大流量に基づき設定された流量以上を前記流量計測手段で計測した場合に前記器具判別手段の動作を開始させることを特徴とする流量計測装置。 A flow rate measuring means for measuring the flow rate of the fluid flowing in the flow path;
An appliance discriminating means for discriminating an appliance that is used from a change in the used flow rate measured by the flow rate measuring means every predetermined time interval;
The appliance discriminating means switching start and stop operation, the appliance discriminating operation switching judgment means for switching based on the change in the used flow rate ,
The appliance discriminating operation switching judging means performs the operation of the appliance discriminating means when the flow rate measuring means measures a flow rate higher than a flow rate set based on the maximum flow rate of the appliance judged to be used by the appliance discriminating means. A flow rate measuring device characterized by being started . 請求項１の流量計測装置を用いた流体供給システム。 A fluid supply system using the flow rate measuring device according to claim 1. 請求項１記載の流量計測装置の手段の全てもしくは一部としてコンピュータを機能させるためのプログラム。 A program for causing a computer to function as all or part of means of the flow rate measuring device according to claim 1.
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