KR960008447B1 - Fluid velocity measuring device and method combining ldv method and time of flight method - Google Patents

Fluid velocity measuring device and method combining ldv method and time of flight method Download PDF

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Publication number
KR960008447B1
KR960008447B1 KR94002419A KR19940002419A KR960008447B1 KR 960008447 B1 KR960008447 B1 KR 960008447B1 KR 94002419 A KR94002419 A KR 94002419A KR 19940002419 A KR19940002419 A KR 19940002419A KR 960008447 B1 KR960008447 B1 KR 960008447B1
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KR
South Korea
Prior art keywords
beams
time
measuring device
ldv
flight
Prior art date
Application number
KR94002419A
Other languages
Korean (ko)
Other versions
KR950025440A (en
Inventor
Jung-Young Sonn
Hyung-Wook Chon
Yong-Jin Choe
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Korea Inst Sci & Tech
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Application filed by Korea Inst Sci & Tech filed Critical Korea Inst Sci & Tech
Priority to KR94002419A priority Critical patent/KR960008447B1/en
Publication of KR950025440A publication Critical patent/KR950025440A/en
Application granted granted Critical
Publication of KR960008447B1 publication Critical patent/KR960008447B1/en

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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

The apparatus and method measures definitely the fluid speed with a wide range of cm/sec to km/sec by compensating the uncertainty of either the LVD or time of flight measurement method. The apparatus comprises: a laser beam source(1); a beam division means(2) dividing polar components of the laser beam, emitted from the beam source(1), into 4 parallel beams; one focus lens(5) focusing the 4 beams in order to make the same polar beams interfere with each other; the other focus lens(6) focusing scattered beams resulted from the phenomenon of making particles in the fluid pass through the interference pattern formed from the focused beams; an optical detector(7) detecting the scattered beams focused by the lens(6).
KR94002419A 1994-02-08 1994-02-08 Fluid velocity measuring device and method combining ldv method and time of flight method KR960008447B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR94002419A KR960008447B1 (en) 1994-02-08 1994-02-08 Fluid velocity measuring device and method combining ldv method and time of flight method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR94002419A KR960008447B1 (en) 1994-02-08 1994-02-08 Fluid velocity measuring device and method combining ldv method and time of flight method

Publications (2)

Publication Number Publication Date
KR950025440A KR950025440A (en) 1995-09-15
KR960008447B1 true KR960008447B1 (en) 1996-06-26

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ID=19377048

Family Applications (1)

Application Number Title Priority Date Filing Date
KR94002419A KR960008447B1 (en) 1994-02-08 1994-02-08 Fluid velocity measuring device and method combining ldv method and time of flight method

Country Status (1)

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KR (1) KR960008447B1 (en)

Also Published As

Publication number Publication date
KR950025440A (en) 1995-09-15

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