JPS59226824A - Flow rate measuring device - Google Patents

Flow rate measuring device

Info

Publication number
JPS59226824A
JPS59226824A JP10309183A JP10309183A JPS59226824A JP S59226824 A JPS59226824 A JP S59226824A JP 10309183 A JP10309183 A JP 10309183A JP 10309183 A JP10309183 A JP 10309183A JP S59226824 A JPS59226824 A JP S59226824A
Authority
JP
Japan
Prior art keywords
flow rate
time
per unit
gas meter
measures
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP10309183A
Other languages
Japanese (ja)
Inventor
Hiroshi Fujieda
藤枝　博
Tatsuo Saka
達男 坂
Tadanori Shirasawa
忠徳 白沢
Masayuki Okamoto
岡本　正幸
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP10309183A priority Critical patent/JPS59226824A/en
Publication of JPS59226824A publication Critical patent/JPS59226824A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
    • G01F15/06—Indicating or recording devices
    • G01F15/061—Indicating or recording devices for remote indication
    • G01F15/063—Indicating or recording devices for remote indication using electrical means

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)
  • Details Of Flowmeters (AREA)

Abstract

PURPOSE:To measure a flow rate per unit time by measuring time intervals of flow rate pulses from a flow rate sensor and calculating the flow rate from the time intervals. CONSTITUTION:A gas meter 2, a magnet, and a reed switch 3 constitute the flow rate sensor 1. The reed switch 3 turns off every time the gas meter 1 measures unit measured volume, and its state change is sent as flow rate pulses to an arithmetic device 4. The arithmetic device 4 measures time intervals of the flow rate pulses through a timer 5. Namely, the timer 5 measures the time from when the switch 3 turns off for the 1st time to when the switch 3 turns off next and sends the time to a processor 6. The processor 6 calculates the flow rate Q per unit time from q/T, where T is the sent time interval and (q) is the unit measured volume from the gas meter. Thus, the flow rate per unit time is measured.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は流量測定装置に関し、流体の単位時間当りの流
量を測定する流量測定装置に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a flow rate measuring device, and more particularly to a flow rate measuring device that measures the flow rate of a fluid per unit time.

従来例の構成とその問題点 従来の流体（たとえば都市ガス、ＬＰガス等）の流量測
定には、例えば模式のガスメータが用いられてきだ。こ
のガスメータは、膜で仕切られた４つの計量室と、ガス
が流れるに従って移動する膜の動きを伝達する連動機構
と、連動機構によって伝えられた力により計量室へのガ
スの流入を制御する弁と、連動機構を指示部と連経する
歯車列と、指示部とより成り、指示部はメータを通過す
るガス流−量の積算値を指示する。当然ながらこのガス
メータでは単位時間当りの流量を測定できない０ 発明の目的 本発明は上記従来の欠点を解消するもので、単位時間当
りの流体流量を測定することを目的とする。Conventional Structure and Problems For conventional flow measurement of fluids (for example, city gas, LP gas, etc.), a model gas meter, for example, has been used. This gas meter consists of four measuring chambers separated by membranes, an interlocking mechanism that transmits the movement of the membrane as the gas flows, and a valve that controls the inflow of gas into the measuring chambers by the force transmitted by the interlocking mechanism. , a gear train that connects the interlocking mechanism to the indicating section, and the indicating section, and the indicating section indicates the integrated value of the gas flow rate passing through the meter. Naturally, this gas meter cannot measure the flow rate per unit time.Objective of the Invention The present invention aims to solve the above-mentioned conventional drawbacks, and it is an object of the present invention to measure the fluid flow rate per unit time.

発明の構成 上記目的を達するため、本発明の流量測定装置は、ガス
供給ライン中に単位流量を検出する都度流量パルスを発
信する流量センサと、この流量センサからの流量パルス
を入力とし、この流量パルスの時間間隔を複数回測定し
、その平均時間間隔を演算するとともに、その平均時間
間隔キリ単位時間当りの流量を演算する演算装置とから
成り、単位時間当りの流量を測定できる、１回の流量パ
ルスの時間間隔測定結果から単位時間当９の流量を演算
するものに比し、流量センサの測定ばらつきを吸収しよ
り精度が高くなるという効果を有するものである。Structure of the Invention In order to achieve the above object, the flow rate measuring device of the present invention includes a flow rate sensor that transmits a flow rate pulse every time a unit flow rate is detected in a gas supply line, and a flow rate pulse from this flow rate sensor as input, and a flow rate measurement device of the present invention. It consists of a calculation device that measures the time interval of pulses multiple times, calculates the average time interval, and calculates the flow rate per unit time per the average time interval. Compared to the method that calculates the flow rate per unit time from the time interval measurement results of flow rate pulses, this method has the effect of absorbing measurement variations of the flow rate sensor and increasing accuracy.

実施例の説明 以下、本発明の一実施例について図面に基づいて説明す
る。DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

ＱにＦ）ｓ）７２はガス供給ライン中に設けたガスメー
タで、ガスメータ２の腹板寸たはその連動機構に磁石を
設ける。３は前記の磁石の変位の有無を検出する磁界セ
ンサで、例えばリードスイッチである。す々わちガスメ
ータ２と、磁石とリードスイッチ３とで、流量センサ１
を構成する。リードスイッチ２は、ガスメータ１が単位
計量体積を計量する都度オンからオフとなり、この状態
の変化が流量パルスとして、演算装置４へと送られる。QF)s) 72 is a gas meter installed in the gas supply line, and a magnet is installed on the belly plate of the gas meter 2 or its interlocking mechanism. 3 is a magnetic field sensor that detects the presence or absence of displacement of the magnet, and is, for example, a reed switch. A gas meter 2, a magnet, and a reed switch 3 make up a flow rate sensor 1.
Configure. The reed switch 2 is turned from on to off each time the gas meter 1 measures a unit measurement volume, and this change in state is sent to the arithmetic unit 4 as a flow rate pulse.

演算装置はリードスイッチ３から送られてくる流量パル
スの時間間隔をタイマ６で測定する０すなわち１回目に
リードスイッチ３がオフからオンになった時点から、次
にリードスイッチ３がオンからオンになるまでの時間を
タイマ５が測定する。The calculation device uses a timer 6 to measure the time interval of flow rate pulses sent from the reed switch 3. In other words, from the time when the reed switch 3 is turned on from off for the first time, and from the time when the reed switch 3 is turned from on to on again. The timer 5 measures the time it takes for this to occur.

測定結果としての時間間隔は６なる処理装置に送られる
。処理装置６は、タイマ６から送られてきた時間間隔Ｔ
と、ガスメータの単位計量体積ｑとから、単位時間当り
の流量Ｑを（ｑ／Ｔ）の演算により求め、結果をＱとし
て出力する。と同時にタイマ５をリセットし、タイマは
次の流量パルスが入力される１での時間を測定する。上
述した演算は、処理装置６が例えばマイクロプロセツサ
であれば、数μ就で実行でき、他方流量パルスの時間間
隔は通常数秒以上であるから、演算終了後にタイマ５を
リセットし、スタートさせても、測定誤差は事実上ゼロ
となる。例えば、メータの単位体積流量は、Ｎ２号メー
タでは０．６７、時間間隔が６秒であれば、単位時間当
りの流量は、０．６１！７６秒＝０．１７１７秒＝３６
０１／ｂｒ−○−３６句３／ｈ　ｒである。The resulting time interval is sent to a processing device 6. The processing device 6 receives the time interval T sent from the timer 6.
and the unit metered volume q of the gas meter, the flow rate Q per unit time is calculated by (q/T), and the result is output as Q. At the same time, the timer 5 is reset, and the timer measures the time at 1 when the next flow rate pulse is input. If the processing device 6 is a microprocessor, for example, the above-mentioned calculation can be executed in a few microseconds. On the other hand, since the time interval between flow rate pulses is usually several seconds or more, the timer 5 is reset and started after the calculation is completed. Also, the measurement error is virtually zero. For example, the unit volume flow rate of the meter is 0.67 for a No. 2 meter, and if the time interval is 6 seconds, the flow rate per unit time is 0.61!76 seconds = 0.1717 seconds = 36
01/br-○-36 phrase 3/hr.

発明の効果 以上のように本発明によれば、流量センサからの流量パ
ルスの時間間隔より単位時間当りの流量を演算するもの
であり、以下のような効果が得られる。Effects of the Invention As described above, according to the present invention, the flow rate per unit time is calculated from the time interval of the flow rate pulses from the flow rate sensor, and the following effects can be obtained.

１　単位時間当りの流量を測定できる。1. Flow rate per unit time can be measured.

２　比較的短時間に単位時間当りの流量を測定できる。2. Flow rate per unit time can be measured in a relatively short time.

【図面の簡単な説明】[Brief explanation of the drawing]

図は本発明の一実施例の流量測定装置の構成図である。 The figure is a configuration diagram of a flow rate measuring device according to an embodiment of the present invention.

Claims (1)

【特許請求の範囲】[Claims] 流体供給ライン中に設けられ、単位流体流量を検出する
都度流量パルスを発信する流量センサと、前記流量パル
スを入力とし、この流量パルスの時間間隔を測定し、こ
の時間間隔より単位時間当りの流体の流量を演算する演
算装置とより成る流量測定装置。A flow rate sensor is installed in the fluid supply line and emits a flow rate pulse every time it detects a unit fluid flow rate, and the flow rate pulse is input, the time interval of this flow rate pulse is measured, and the flow rate per unit time is determined from this time interval. A flow rate measurement device consisting of a calculation device that calculates the flow rate of .
JP10309183A 1983-06-08 1983-06-08 Flow rate measuring device Pending JPS59226824A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10309183A JPS59226824A (en) 1983-06-08 1983-06-08 Flow rate measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10309183A JPS59226824A (en) 1983-06-08 1983-06-08 Flow rate measuring device

Publications (1)

Publication Number Publication Date
JPS59226824A true JPS59226824A (en) 1984-12-20

Family

ID=14344963

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10309183A Pending JPS59226824A (en) 1983-06-08 1983-06-08 Flow rate measuring device

Country Status (1)

Country Link
JP (1) JPS59226824A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03503452A (en) * 1988-06-24 1991-08-01 アメリカン・メーター・カンパニー Non-intrusive meter calibration device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5585219A (en) * 1978-12-22 1980-06-27 Toshiba Corp Predicting method of pulse interval

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5585219A (en) * 1978-12-22 1980-06-27 Toshiba Corp Predicting method of pulse interval

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03503452A (en) * 1988-06-24 1991-08-01 アメリカン・メーター・カンパニー Non-intrusive meter calibration device

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