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JPS57197486A - Laser doppler speedometer - Google Patents

Laser doppler speedometer

Info

Publication number
JPS57197486A
JPS57197486A JP8234981A JP8234981A JPS57197486A JP S57197486 A JPS57197486 A JP S57197486A JP 8234981 A JP8234981 A JP 8234981A JP 8234981 A JP8234981 A JP 8234981A JP S57197486 A JPS57197486 A JP S57197486A
Authority
JP
Japan
Prior art keywords
light
light source
doppler
laser
speed
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.)
Pending
Application number
JP8234981A
Other languages
Japanese (ja)
Inventor
Shuichi Mitsuzuka
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.)
Faurecia Clarion Electronics Co Ltd
Original Assignee
Clarion Co Ltd
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 Clarion Co Ltd filed Critical Clarion Co Ltd
Priority to JP8234981A priority Critical patent/JPS57197486A/en
Publication of JPS57197486A publication Critical patent/JPS57197486A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • G01S17/58—Velocity or trajectory determination systems; Sense-of-movement determination systems

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Optical Radar Systems And Details Thereof (AREA)

Abstract

PURPOSE:To obtain a small-sized and light-weight Doppler speedometer capable of real-time detection, by irradiating the light of a light source from two differenct positions through optical fibers and detecting the Doppler-shifted reflected light from an object. CONSTITUTION:Laser beams from both ends of a laser light source 17 of a light source 7 are transmitted to lenses 9 and 9 of a supporting member 15, which forms a head, through optical fibers 10 and 10, and a material 16 moving in a speed V is irradiated with laser beams from two different positions of incident angles theta1 and theta2. The reflected scattered light from the material 16 which is Doppler-shifted in accordance with the speed V is received by a photodetector through an optical filter 12 and a lens 11 of the member 15. Thus, oscillation components DELTAf of the frequency based on expressionIappears in a detector 8, and the movement speed of the material 16 is measured by a processing part 13 provided with an HPF 23 for eliminating DC components, an amplifier 24, a frequency counter or frequency-voltage converter 25, etc., and a small-sized and light-weight laser Doppler speedometer which is separated from the light source or the like and makes the real-time measurement possible is obtained. In expression, lambda is a laser beam wavelength.
JP8234981A 1981-05-29 1981-05-29 Laser doppler speedometer Pending JPS57197486A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8234981A JPS57197486A (en) 1981-05-29 1981-05-29 Laser doppler speedometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8234981A JPS57197486A (en) 1981-05-29 1981-05-29 Laser doppler speedometer

Publications (1)

Publication Number Publication Date
JPS57197486A true JPS57197486A (en) 1982-12-03

Family

ID=13772084

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8234981A Pending JPS57197486A (en) 1981-05-29 1981-05-29 Laser doppler speedometer

Country Status (1)

Country Link
JP (1) JPS57197486A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60249063A (en) * 1984-02-21 1985-12-09 ドイツ連邦共和国 Laser-doppler anemometer
FR2567651A1 (en) * 1984-07-12 1986-01-17 Commissariat Energie Atomique Equipment for measuring the speed of a projectile by interferometry using a laser beam propagated by a single optical waveguide
US4613916A (en) * 1983-12-30 1986-09-23 International Business Machines Corporation Information storage disk transducer position control system requiring no servo pattern on the storage disk
JPS61228360A (en) * 1984-09-17 1986-10-11 ユニバ−シテイ・オブ・デラウエア Laser doppler spectrometer for statistical investigation of kinetic characteristic of microorganism
JPS63191085A (en) * 1987-02-03 1988-08-08 Mitsubishi Electric Corp Laser doppler speedometer
US5589858A (en) * 1990-05-22 1996-12-31 Canon Kabushiki Kaisha Information recording apparatus
US7000721B2 (en) 2001-04-27 2006-02-21 Denso Corporation Optical object detection apparatus designed to monitor front and lateral zones of vehicle

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5759173A (en) * 1980-09-25 1982-04-09 Mitsubishi Electric Corp Laser doppler speedometer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5759173A (en) * 1980-09-25 1982-04-09 Mitsubishi Electric Corp Laser doppler speedometer

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4613916A (en) * 1983-12-30 1986-09-23 International Business Machines Corporation Information storage disk transducer position control system requiring no servo pattern on the storage disk
JPS60249063A (en) * 1984-02-21 1985-12-09 ドイツ連邦共和国 Laser-doppler anemometer
FR2567651A1 (en) * 1984-07-12 1986-01-17 Commissariat Energie Atomique Equipment for measuring the speed of a projectile by interferometry using a laser beam propagated by a single optical waveguide
JPS61228360A (en) * 1984-09-17 1986-10-11 ユニバ−シテイ・オブ・デラウエア Laser doppler spectrometer for statistical investigation of kinetic characteristic of microorganism
JPS63191085A (en) * 1987-02-03 1988-08-08 Mitsubishi Electric Corp Laser doppler speedometer
US5589858A (en) * 1990-05-22 1996-12-31 Canon Kabushiki Kaisha Information recording apparatus
US7000721B2 (en) 2001-04-27 2006-02-21 Denso Corporation Optical object detection apparatus designed to monitor front and lateral zones of vehicle

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