GB1242063A - Improvements in or relating to the detection and measurement of movement - Google Patents

Improvements in or relating to the detection and measurement of movement

Info

Publication number
GB1242063A
GB1242063A GB00757/68A GB1075768A GB1242063A GB 1242063 A GB1242063 A GB 1242063A GB 00757/68 A GB00757/68 A GB 00757/68A GB 1075768 A GB1075768 A GB 1075768A GB 1242063 A GB1242063 A GB 1242063A
Authority
GB
United Kingdom
Prior art keywords
tube
scattered
photo
light
laser beam
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.)
Expired
Application number
GB00757/68A
Inventor
Peter Alfred Egelstaff
Thomas Patrick Joseph W Bourke
David Alfred Jackson
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.)
UK Atomic Energy Authority
Original Assignee
UK Atomic Energy Authority
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 UK Atomic Energy Authority filed Critical UK Atomic Energy Authority
Priority to GB00757/68A priority Critical patent/GB1242063A/en
Priority to FR1592220D priority patent/FR1592220A/fr
Priority to DK544968A priority patent/DK144716C/en
Priority to DE1808162A priority patent/DE1808162C3/en
Publication of GB1242063A publication Critical patent/GB1242063A/en
Priority to DK398974A priority patent/DK136380B/en
Expired 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
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/36—Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light
    • G01P3/366—Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light by using diffraction of light
    • 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
    • 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
    • G01P5/26—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 optical wave
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/50—Systems of measurement based on relative movement of target
    • G01S13/58—Velocity or trajectory determination systems; Sense-of-movement determination systems
    • G01S13/585—Velocity or trajectory determination systems; Sense-of-movement determination systems processing the video signal in order to evaluate or display the velocity value
    • G01S13/587—Velocity or trajectory determination systems; Sense-of-movement determination systems processing the video signal in order to evaluate or display the velocity value using optical means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/50—Systems of measurement based on relative movement of target
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/08—Construction or shape of optical resonators or components thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/08—Construction or shape of optical resonators or components thereof
    • H01S3/081—Construction or shape of optical resonators or components thereof comprising three or more reflectors
    • H01S3/083—Ring lasers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
    • Y02A90/30—Assessment of water resources

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Optics & Photonics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Plasma & Fusion (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Power Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Measuring Volume Flow (AREA)

Abstract

1,242,063. Detecting particles photoelectrically. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Nov. 7, 1968 [Nov. 10, 1967 and March 5, 1968], Nos. 51371/67 and 10757/68. Heading G1A. [Also in Divisions H3-5] Specification describes method of measuring or detecting the movement 11 of a particle in or relative to a fluid, comprising directing a beam of laser light b at the particle and observing the change in frequency, due to the Doppler effect, of said light scattered or reflected by the particle. As shown the particles comprise milk added to the flowing water to increase its scattering. The laser beam b, passing from laser 12 via beam-splitter 13, reflector 16 and focusing lens 18 is focused on the particles and the scattered light detected, in direction limited by stop 20, by photo-tube 19. A second "reference" beam a passes via neutral density filter 14 behind the water tube 10 and is also detected by the photo-tube 19. The photo-tube has a non-linear characteristic, whereby mixing of the two incident beams takes place and the Doppler beat appears at the output thereof. An absorber 21 absorbs the non scattered part of beam b. The laser beam may be directed along a runway to detect turbulence caused by aircraft, the photodetectors being at the side of the runway, whereby the Doppler beat is produced by self beating within the scattered light using the homodyne effect, or at the far end of the runway whereby beating at the photo-tube takes place as in the illustrated embodiment. The laser beam may be directed along a river, to detect its velocity, the scattered and reference beam being detected by telescopes. The laser beam may be directed at a moving steel strip to detect Doppler shift in the reflected light.
GB00757/68A 1967-11-10 1967-11-10 Improvements in or relating to the detection and measurement of movement Expired GB1242063A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB00757/68A GB1242063A (en) 1967-11-10 1967-11-10 Improvements in or relating to the detection and measurement of movement
FR1592220D FR1592220A (en) 1967-11-10 1968-11-08
DK544968A DK144716C (en) 1967-11-10 1968-11-08 APPARATUS FOR MEASURING THE FLOW SPEED OF A FLUID
DE1808162A DE1808162C3 (en) 1967-11-10 1968-11-09 Method for detecting turbulence in a fluid
DK398974A DK136380B (en) 1967-11-10 1974-07-24 Method for detecting an eddy current in a fluid.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB5137167 1967-11-10
GB00757/68A GB1242063A (en) 1967-11-10 1967-11-10 Improvements in or relating to the detection and measurement of movement

Publications (1)

Publication Number Publication Date
GB1242063A true GB1242063A (en) 1971-08-11

Family

ID=26247746

Family Applications (1)

Application Number Title Priority Date Filing Date
GB00757/68A Expired GB1242063A (en) 1967-11-10 1967-11-10 Improvements in or relating to the detection and measurement of movement

Country Status (4)

Country Link
DE (1) DE1808162C3 (en)
DK (1) DK144716C (en)
FR (1) FR1592220A (en)
GB (1) GB1242063A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2454102A1 (en) * 1979-02-27 1980-11-07 Anvar METHOD AND DEVICE FOR THE SIMULTANEOUS MEASUREMENT OF SPEEDS, FLUCTUATIONS OF SPEEDS AND DIAMETERS OF SUBMICRONIC PARTICLES IN A FLUID
DE3033250A1 (en) * 1980-09-04 1982-04-08 Stahl Gmbh & Co Maschinenfabrik, 7140 Ludwigsburg Gear wheel drive for shafts and rollers - is used in folding machines and has element damping mechanical oscillations located inside each gear wheel
DE3153109C2 (en) * 1981-03-27 1986-02-13 Jagenberg AG, 4000 Düsseldorf Noise-damped machine element
FR2527334B1 (en) * 1982-05-21 1985-03-01 Inst Nat Sante Rech Med FOCUSLESS LASER ELECTROPHORESIS APPARATUS
GB2215050B (en) * 1988-02-03 1991-09-04 Schlumberger Ind Ltd Systems for detecting magnetic particles in fluids
DE3936950C2 (en) * 1988-07-08 1996-12-19 Deutsch Franz Forsch Inst Laser Doppler anemometer
DE102012001703A1 (en) 2012-01-31 2013-08-01 Astrium Gmbh gear

Also Published As

Publication number Publication date
DK144716B (en) 1982-05-17
DE1808162C3 (en) 1982-02-04
DE1808162B2 (en) 1978-10-26
DK144716C (en) 1982-11-15
DE1808162A1 (en) 1969-07-24
FR1592220A (en) 1970-05-11

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