FR2394092A1 - ELECTRONIC FLUID VELOCIMETRY METHOD AND DEVICE - Google Patents
ELECTRONIC FLUID VELOCIMETRY METHOD AND DEVICEInfo
- 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
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.
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)
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)
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 |
-
1977
- 1977-06-10 GB GB2444177A patent/GB1603087A/en not_active Expired
-
1978
- 1978-06-09 DE DE19782825446 patent/DE2825446A1/en not_active Withdrawn
- 1978-06-09 FR FR787817332A patent/FR2394092A1/en active Granted
Cited By (2)
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 |