FR2394092A1 - ELECTRONIC FLUID VELOCIMETRY METHOD AND DEVICE - Google Patents

ELECTRONIC FLUID VELOCIMETRY METHOD AND DEVICE

Info

Publication number
FR2394092A1
FR2394092A1 FR787817332A FR7817332A FR2394092A1 FR 2394092 A1 FR2394092 A1 FR 2394092A1 FR 787817332 A FR787817332 A FR 787817332A FR 7817332 A FR7817332 A FR 7817332A FR 2394092 A1 FR2394092 A1 FR 2394092A1
Authority
FR
France
Prior art keywords
area
order
electronic fluid
velocimetry method
fluid velocimetry
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.)
Granted
Application number
FR787817332A
Other languages
French (fr)
Other versions
FR2394092B1 (en
Inventor
Michael Alldritt
Robin Jones
Christopher John Oliver
John Michael Vaughan
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.)
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
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 National Research Development Corp UK filed Critical National Research Development Corp UK
Publication of FR2394092A1 publication Critical patent/FR2394092A1/en
Application granted granted Critical
Publication of FR2394092B1 publication Critical patent/FR2394092B1/fr
Granted 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
    • G01F1/661—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 using light
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/16—Spectrum analysis; Fourier analysis
    • G01R23/18—Spectrum analysis; Fourier analysis with provision for recording frequency spectrum

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • Mathematical Physics (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

L'invention concerne un procédé et un dispositif de mesure de vitesse de fluides consistant à éclairer par une source de lumière laser 1 une zone de l'espace 7 dans laquelle se produit le déplacement à mesurer, à détecter les photons diffusés depuis cette zone pour produire un signal électrique numérique, et traiter ce dernier dans un analyseur spectral 14 dont les signaux de sortie sont traités par un convertisseur analogique/ numérique 15 et par un intégrateur 16 en vue d'obtenir une indication continue de la variation chronologique du paramètre mesuré.The invention relates to a method and a device for measuring the velocity of fluids, consisting in illuminating by a laser light source 1 an area of space 7 in which the displacement to be measured occurs, in detecting the photons scattered from this area in order to producing a digital electrical signal, and processing the latter in a spectral analyzer 14 whose output signals are processed by an analog / digital converter 15 and by an integrator 16 in order to obtain a continuous indication of the chronological variation of the measured parameter.

FR787817332A 1977-06-10 1978-06-09 ELECTRONIC FLUID VELOCIMETRY METHOD AND DEVICE Granted FR2394092A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2444177A GB1603087A (en) 1977-06-10 1977-06-10 Processing of digital signals

Publications (2)

Publication Number Publication Date
FR2394092A1 true FR2394092A1 (en) 1979-01-05
FR2394092B1 FR2394092B1 (en) 1984-01-06

Family

ID=10211788

Family Applications (1)

Application Number Title Priority Date Filing Date
FR787817332A Granted FR2394092A1 (en) 1977-06-10 1978-06-09 ELECTRONIC FLUID VELOCIMETRY METHOD AND DEVICE

Country Status (3)

Country Link
DE (1) DE2825446A1 (en)
FR (1) FR2394092A1 (en)
GB (1) GB1603087A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0614086A1 (en) * 1993-03-05 1994-09-07 Canon Kabushiki Kaisha Velocity information detecting apparatus

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3435295C1 (en) * 1984-09-26 1990-05-17 Siemens Ag Method and arrangement for detecting and identifying target objects
DE19643475C1 (en) * 1996-10-22 1998-06-25 Laser Applikationan Gmbh Speed measurement method based on the laser Doppler principle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0614086A1 (en) * 1993-03-05 1994-09-07 Canon Kabushiki Kaisha Velocity information detecting apparatus
US5557396A (en) * 1993-03-05 1996-09-17 Canon Kabushiki Kaisha Velocity information detecting apparatus

Also Published As

Publication number Publication date
DE2825446A1 (en) 1979-01-11
GB1603087A (en) 1981-11-18
FR2394092B1 (en) 1984-01-06

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Legal Events

Date Code Title Description
ST Notification of lapse