WO2009078161A1 - 流量計測装置 - Google Patents

流量計測装置 Download PDF

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Publication number
WO2009078161A1
WO2009078161A1 PCT/JP2008/003750 JP2008003750W WO2009078161A1 WO 2009078161 A1 WO2009078161 A1 WO 2009078161A1 JP 2008003750 W JP2008003750 W JP 2008003750W WO 2009078161 A1 WO2009078161 A1 WO 2009078161A1
Authority
WO
WIPO (PCT)
Prior art keywords
receiving
time
vref
receiving point
value
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.)
Ceased
Application number
PCT/JP2008/003750
Other languages
English (en)
French (fr)
Inventor
Fumikazu Shiba
Koichi Takemura
Daisuke Bessyo
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 Corp
Original Assignee
Panasonic Corp
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
Priority claimed from JP2007326890A external-priority patent/JP5292797B2/ja
Priority claimed from JP2007326891A external-priority patent/JP5292798B2/ja
Application filed by Panasonic Corp filed Critical Panasonic Corp
Priority to CN2008801220285A priority Critical patent/CN101903751B/zh
Priority to US12/809,311 priority patent/US8903663B2/en
Priority to EP08861745.1A priority patent/EP2224219B1/en
Publication of WO2009078161A1 publication Critical patent/WO2009078161A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
    • G01F1/667—Arrangements of transducers for ultrasonic flowmeters; Circuits for operating ultrasonic flowmeters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
    • G01F1/662—Constructional details

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)

Abstract

　超音波の伝搬時間を求める際に、比較的受信振幅の大きい部分では、上流側と下流側とで受信する波形に差が発生し、伝搬時間の誤差として検知されるのを防止したものである。 　受信信号は受信手段３５で増幅されその信号レベルが予め定めた値(Ｖｒｅｆ)になるまで受信点記憶手段３８は複数の記憶部に順次最新の受信点データを記憶する。Ｖｒｅｆになる前後の２点の零クロス点の平均値を受信点とすることができ、上下オフセットなど誤差の少ない伝搬時間を計測し、計測時間短縮化で省電力動作を実現することが可能になる。
PCT/JP2008/003750 2007-12-19 2008-12-12 流量計測装置 Ceased WO2009078161A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN2008801220285A CN101903751B (zh) 2007-12-19 2008-12-12 流量计测装置
US12/809,311 US8903663B2 (en) 2007-12-19 2008-12-12 Flow measurement device
EP08861745.1A EP2224219B1 (en) 2007-12-19 2008-12-12 Ultrasonic flow measurement device

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2007-326891 2007-12-19
JP2007326890A JP5292797B2 (ja) 2007-12-19 2007-12-19 流量計測装置
JP2007-326890 2007-12-19
JP2007326891A JP5292798B2 (ja) 2007-12-19 2007-12-19 流量計測装置

Publications (1)

Publication Number Publication Date
WO2009078161A1 true WO2009078161A1 (ja) 2009-06-25

Family

ID=40795283

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/003750 Ceased WO2009078161A1 (ja) 2007-12-19 2008-12-12 流量計測装置

Country Status (4)

Country Link
US (1) US8903663B2 (ja)
EP (1) EP2224219B1 (ja)
CN (1) CN101903751B (ja)
WO (1) WO2009078161A1 (ja)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102261937A (zh) * 2011-04-25 2011-11-30 西安交通大学 一种高精度时差式超声波流量计及其流量测量方法
JP5884014B2 (ja) * 2012-06-26 2016-03-15 パナソニックＩｐマネジメント株式会社 流れ計測装置
JP2014092467A (ja) * 2012-11-05 2014-05-19 Panasonic Corp 流量計測装置
CN103344288B (zh) * 2013-06-25 2015-10-07 国家电网公司 一种基于零点分析的时差式超声波流量计测量方法
US9869572B2 (en) * 2015-09-08 2018-01-16 Kabushiki Kaisha Toshiba Semiconductor acoustic measurement device that determines the presence or absence of the second ultrasonic measurement
EP3367072B1 (de) * 2017-02-24 2019-01-02 SICK Engineering GmbH Strömungsmessung mit ultraschall
JP7298186B2 (ja) * 2019-02-26 2023-06-27 セイコーエプソン株式会社 超音波計測装置、及び超音波計測方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002013958A (ja) 2000-06-29 2002-01-18 Fuji Electric Co Ltd 超音波流量計
JP2003172645A (ja) * 2001-12-05 2003-06-20 Matsushita Electric Ind Co Ltd 流量計測装置
JP2003232662A (ja) * 2002-02-08 2003-08-22 Matsushita Electric Ind Co Ltd 流量計測装置及びこの装置を機能させるためのプログラム
JP2006275608A (ja) * 2005-03-28 2006-10-12 Teijin Pharma Ltd 超音波伝播時間測定方法を用いた気体流量及び気体濃度の測定装置
JP2007051889A (ja) * 2005-08-16 2007-03-01 Matsushita Electric Ind Co Ltd 流体の流れ計測装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3905956A1 (de) * 1989-02-25 1990-09-13 Fraunhofer Ges Forschung Vorrichtung zur messung von ultraschallaufzeiten
AUPN606095A0 (en) * 1995-10-19 1995-11-09 AGL Consultancy Pty. Limited Digital speed determination in ultrasonic flow measurements
US5777238A (en) * 1996-06-12 1998-07-07 Welch Allyn, Inc. Driver-receiver apparatus for use with ultrasonic flowmeters
JP3616324B2 (ja) * 2000-11-27 2005-02-02 東京計装株式会社 伝播時間差方式による超音波流量計
DK174756B1 (da) * 2002-06-30 2003-10-20 Siemens Flow Instr As Fremgangsmåde til måling af flow ved hjælp af en ultralydsflowmåler
CN1325880C (zh) * 2002-08-05 2007-07-11 松下电器产业株式会社 流量计量装置
US7213468B2 (en) * 2003-04-21 2007-05-08 Teijin Pharma Limited Ultrasonic apparatus and method for measuring the concentration and flow rate of gas
US20070241874A1 (en) * 2006-04-17 2007-10-18 Okpysh Stephen L Braking intensity light
JP2007322194A (ja) * 2006-05-31 2007-12-13 Matsushita Electric Ind Co Ltd 流体の流れ計測装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002013958A (ja) 2000-06-29 2002-01-18 Fuji Electric Co Ltd 超音波流量計
JP2003172645A (ja) * 2001-12-05 2003-06-20 Matsushita Electric Ind Co Ltd 流量計測装置
JP2003232662A (ja) * 2002-02-08 2003-08-22 Matsushita Electric Ind Co Ltd 流量計測装置及びこの装置を機能させるためのプログラム
JP2006275608A (ja) * 2005-03-28 2006-10-12 Teijin Pharma Ltd 超音波伝播時間測定方法を用いた気体流量及び気体濃度の測定装置
JP2007051889A (ja) * 2005-08-16 2007-03-01 Matsushita Electric Ind Co Ltd 流体の流れ計測装置

Also Published As

Publication number Publication date
EP2224219A1 (en) 2010-09-01
US20110238332A1 (en) 2011-09-29
EP2224219A4 (en) 2017-12-20
US8903663B2 (en) 2014-12-02
CN101903751A (zh) 2010-12-01
CN101903751B (zh) 2012-06-27
EP2224219B1 (en) 2020-05-06

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