JPS5759173A - Laser doppler speedometer - Google Patents

Laser doppler speedometer

Info

Publication number
JPS5759173A
JPS5759173A JP55133932A JP13393280A JPS5759173A JP S5759173 A JPS5759173 A JP S5759173A JP 55133932 A JP55133932 A JP 55133932A JP 13393280 A JP13393280 A JP 13393280A JP S5759173 A JPS5759173 A JP S5759173A
Authority
JP
Japan
Prior art keywords
light
optical
fluid
made incident
receiver
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
JP55133932A
Other languages
Japanese (ja)
Inventor
Kazuo Hisama
Shuichi Tai
Toshio Aranishi
Koichi Hamanaka
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP55133932A priority Critical patent/JPS5759173A/en
Publication of JPS5759173A publication Critical patent/JPS5759173A/en
Pending 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
    • G01P5/26—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

Abstract

PURPOSE:To eliminate the need for optical adjustment and make remote sensing possible by using optical fibers for optical transmission lines. CONSTITUTION:The exit light from a laser light source 1 is made incident to an optical fiber 14, is branched to two ways by a splitter 2, and is projected from microlenses 13 to the inside of an object 8 to be measured through two pieces of speed probes 10. The light scattered from the scattering particles 9 in fluid 8 is made incident via the lenses 13 into an optical fiber 11, and is transmitted to a photoelectric transducer 6, by which the scattered light receiving Doppler shift is heterodyne-detected. The detected frequency is supplied to a light receiver 7. Hence, from the output of the receiver 7, the speed of the fluid 8 is known.
JP55133932A 1980-09-25 1980-09-25 Laser doppler speedometer Pending JPS5759173A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55133932A JPS5759173A (en) 1980-09-25 1980-09-25 Laser doppler speedometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55133932A JPS5759173A (en) 1980-09-25 1980-09-25 Laser doppler speedometer

Publications (1)

Publication Number Publication Date
JPS5759173A true JPS5759173A (en) 1982-04-09

Family

ID=15116438

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55133932A Pending JPS5759173A (en) 1980-09-25 1980-09-25 Laser doppler speedometer

Country Status (1)

Country Link
JP (1) JPS5759173A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57197486A (en) * 1981-05-29 1982-12-03 Clarion Co Ltd Laser doppler speedometer
JPS607366A (en) * 1983-06-28 1985-01-16 Mitsubishi Heavy Ind Ltd Speedometer
JPS60235067A (en) * 1984-05-08 1985-11-21 Mitsubishi Electric Corp Laser doppler speedometer
JPS61161762U (en) * 1985-03-29 1986-10-07
JPH02201165A (en) * 1989-01-30 1990-08-09 Suzuki Motor Co Ltd Laser doppler speed meter
JPH07311215A (en) * 1994-03-22 1995-11-28 Toyota Central Res & Dev Lab Inc Laser doppler current meter
JP2018009919A (en) * 2016-07-15 2018-01-18 日本電信電話株式会社 Fluid measurement apparatus and method
US11709082B2 (en) 2019-06-24 2023-07-25 Nippon Telegraph And Telephone Corporation Fluid measurement apparatus

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3552855A (en) * 1969-04-16 1971-01-05 Us Air Force Laser velocimeter utilizing fiber optics
JPS5563634A (en) * 1978-10-31 1980-05-13 Nilsson Gert Erik Method of deciding flowing motion of fluid and its device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3552855A (en) * 1969-04-16 1971-01-05 Us Air Force Laser velocimeter utilizing fiber optics
JPS5563634A (en) * 1978-10-31 1980-05-13 Nilsson Gert Erik Method of deciding flowing motion of fluid and its device

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57197486A (en) * 1981-05-29 1982-12-03 Clarion Co Ltd Laser doppler speedometer
JPS607366A (en) * 1983-06-28 1985-01-16 Mitsubishi Heavy Ind Ltd Speedometer
JPS60235067A (en) * 1984-05-08 1985-11-21 Mitsubishi Electric Corp Laser doppler speedometer
JPS61161762U (en) * 1985-03-29 1986-10-07
JPH0326454Y2 (en) * 1985-03-29 1991-06-07
JPH02201165A (en) * 1989-01-30 1990-08-09 Suzuki Motor Co Ltd Laser doppler speed meter
JPH0827351B2 (en) * 1989-01-30 1996-03-21 スズキ株式会社 Laser doppler velocimeter
JPH07311215A (en) * 1994-03-22 1995-11-28 Toyota Central Res & Dev Lab Inc Laser doppler current meter
US5587785A (en) * 1994-03-22 1996-12-24 Kabushiki Kaisha Toyota Chuo Kenkyusho Laser doppler velocimeter
JP2018009919A (en) * 2016-07-15 2018-01-18 日本電信電話株式会社 Fluid measurement apparatus and method
US11709082B2 (en) 2019-06-24 2023-07-25 Nippon Telegraph And Telephone Corporation Fluid measurement apparatus

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