DE19948805A1 - Mehrfachfrequenz-Doppler-Strömungsmesser - Google Patents

Mehrfachfrequenz-Doppler-Strömungsmesser

Info

Publication number
DE19948805A1
DE19948805A1 DE19948805A DE19948805A DE19948805A1 DE 19948805 A1 DE19948805 A1 DE 19948805A1 DE 19948805 A DE19948805 A DE 19948805A DE 19948805 A DE19948805 A DE 19948805A DE 19948805 A1 DE19948805 A1 DE 19948805A1
Authority
DE
Germany
Prior art keywords
frequency
energy
frequencies
fluid
signal
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.)
Withdrawn
Application number
DE19948805A
Other languages
German (de)
English (en)
Inventor
Robert A Moss
Michael Masterov
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.)
Polysonics Inc
Original Assignee
Polysonics Inc
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 Polysonics Inc filed Critical Polysonics Inc
Publication of DE19948805A1 publication Critical patent/DE19948805A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
    • G01P5/24—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting acoustical wave
    • G01P5/241—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting acoustical wave by using reflection of acoustical waves, i.e. Doppler-effect
    • 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
    • G01F1/663—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 by measuring Doppler frequency shift
    • 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
    • G01F1/704—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow using marked regions or existing inhomogeneities within the fluid stream, e.g. statistically occurring variations in a fluid parameter
    • G01F1/708—Measuring the time taken to traverse a fixed distance
    • G01F1/712—Measuring the time taken to traverse a fixed distance using auto-correlation or cross-correlation detection means
DE19948805A 1998-10-06 1999-10-04 Mehrfachfrequenz-Doppler-Strömungsmesser Withdrawn DE19948805A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/166,989 US6408699B1 (en) 1998-10-06 1998-10-06 Multiple frequency Doppler flow meter

Publications (1)

Publication Number Publication Date
DE19948805A1 true DE19948805A1 (de) 2000-06-21

Family

ID=22605483

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19948805A Withdrawn DE19948805A1 (de) 1998-10-06 1999-10-04 Mehrfachfrequenz-Doppler-Strömungsmesser

Country Status (5)

Country Link
US (1) US6408699B1 (US06408699-20020625-M00004.png)
JP (1) JP2000111376A (US06408699-20020625-M00004.png)
DE (1) DE19948805A1 (US06408699-20020625-M00004.png)
FR (1) FR2784182A1 (US06408699-20020625-M00004.png)
GB (1) GB2342444B (US06408699-20020625-M00004.png)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7203192B2 (en) * 2002-06-04 2007-04-10 Fortinet, Inc. Network packet steering
JP4535065B2 (ja) * 2004-02-27 2010-09-01 富士電機システムズ株式会社 ドップラー式超音波流量計
US8214168B2 (en) * 2004-09-07 2012-07-03 Transonic Systems, Inc. Noninvasive testing of a material intermediate spaced walls
US7152490B1 (en) 2005-08-15 2006-12-26 Daniel Measurement And Control, Inc. Methods for determining transducer delay time and transducer separation in ultrasonic flow meters
EP2570782B1 (en) * 2011-08-08 2017-02-22 Hach Corporation Doppler measurement instrument and doppler measurement processing method
FR3032524B1 (fr) * 2015-02-10 2017-03-24 Yzatec Transducteur ultrasonore, son procede de montage et debitmetre comprenant au moins un tel transducteur
US10914055B2 (en) 2015-09-25 2021-02-09 Conservation Labs, Inc. Fluid monitoring system
JP6559057B2 (ja) * 2015-12-18 2019-08-14 株式会社Pfu 重送検出装置、重送検出方法及び制御プログラム
WO2019099477A1 (en) * 2017-11-17 2019-05-23 Exxonmobil Research And Enginerring Company Estimating flow velocity by harmonic exctation of injected microbubbles
US11604086B2 (en) * 2018-02-08 2023-03-14 FlowCommand Inc. Measurement of flow rate from a reflected signal
JP7105722B2 (ja) 2018-04-16 2022-07-25 株式会社Ｙｄｋテクノロジーズ 電波式流速計
CN108680765B (zh) * 2018-05-16 2020-07-28 英华达（上海）科技有限公司 流速感测装置及流速感测系统
CA3124910A1 (en) * 2019-01-18 2020-07-23 Flow-Tronic S.A. Non-invasive open channel flow meter
CN110595554B (zh) * 2019-09-24 2020-07-28 西安交通大学 套管装置超声波实验装置及其实验方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3568661A (en) * 1968-10-02 1971-03-09 Us Health Education & Welfare Frequency modulated ultrasound technique for measurement of fluid velocity
JPS6018005B2 (ja) * 1979-12-16 1985-05-08 株式会社荏原製作所 透過形測定モ−ドと反射形測定モ−ドとを自動切換可能な超音波流速流量計
US4333353A (en) * 1980-07-28 1982-06-08 Joseph Baumoel Two-transducer Doppler flowmeter with swept oscillator
US4434669A (en) * 1980-10-08 1984-03-06 National Research Development Corporation Apparatus for transmitting and receiving sound
US4391149A (en) * 1981-05-15 1983-07-05 Fischer & Porter Company Doppler-type ultrasonic flowmeter
JPS5920149A (ja) * 1982-07-28 1984-02-01 富士通株式会社 超音波パルスドプラ血流計
US4780837A (en) * 1984-06-23 1988-10-25 Aloka Co., Ltd. Doppler signal frequency converter
US4690002A (en) * 1986-05-14 1987-09-01 Minnesota Minning And Manufacturing Company Doppler system for measurement of blood flow during cardiopulmonary bypass and ventricular assist
FR2658069A1 (fr) * 1990-02-09 1991-08-16 Philips Electronique Lab Dispositif de mesure de la vitesse d'organes en mouvement et d'ecoulements sanguins par echographie ultrasonore, a vitesse limite de mesure elevee.
US5564420A (en) * 1995-04-14 1996-10-15 Minnesota Mining And Manufacturing Company Medical device with EMI detection and cancellation
US5669386A (en) 1996-07-31 1997-09-23 Hewlett-Packard Company Ultrasonic flow measurement system employing cross-correlation of baseband reflection data
US5738097A (en) * 1996-11-08 1998-04-14 Diagnostics Ultrasound Corporation Vector Doppler system for stroke screening

Also Published As

Publication number Publication date
GB9923549D0 (en) 1999-12-08
GB2342444B (en) 2003-06-18
JP2000111376A (ja) 2000-04-18
US6408699B1 (en) 2002-06-25
GB2342444A (en) 2000-04-12
FR2784182A1 (fr) 2000-04-07

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Legal Events

Date Code Title Description
8139 Disposal/non-payment of the annual fee