GB1320390A - Apparatus for detecting or measuring the local velocity of a radiation-permeable medium - Google Patents

Apparatus for detecting or measuring the local velocity of a radiation-permeable medium

Info

Publication number
GB1320390A
GB1320390A GB6167070A GB6167070A GB1320390A GB 1320390 A GB1320390 A GB 1320390A GB 6167070 A GB6167070 A GB 6167070A GB 6167070 A GB6167070 A GB 6167070A GB 1320390 A GB1320390 A GB 1320390A
Authority
GB
United Kingdom
Prior art keywords
measuring
radiation
diffraction grating
reference beam
local velocity
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
GB6167070A
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.)
BBC Brown Boveri AG Switzerland
BBC Brown Boveri France SA
Original Assignee
BBC Brown Boveri AG Switzerland
BBC Brown Boveri France SA
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 BBC Brown Boveri AG Switzerland, BBC Brown Boveri France SA filed Critical BBC Brown Boveri AG Switzerland
Publication of GB1320390A publication Critical patent/GB1320390A/en
Expired 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
    • 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
    • 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

Landscapes

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

Abstract

1320390 Velocity measurement BROWN BOVERI & CO Ltd 29 Dec 1970 [29 Dec 1969] 61670/70 Heading H4D In apparatus for measuring the local velocity of a radiation-permeable medium 9<SP>1</SP> by means of the doppler effect the beam 2<SP>1</SP> from a coherent radiation source 1<SP>1</SP> is split by a diffraction grating 12<SP>1</SP> into a reference beam 4<SP>1</SP> and a signal beam 5<SP>1</SP> which are directed to a measuring position 8<SP>1</SP> in the medium 9<SP>1</SP>. The reference beam and the scattered component of the signal beam 5<SP>1</SP> are then passed to a mixer receiver 11<SP>1</SP> where the frequency difference is obtained from the beat of the two beam frequencies. In an alternative embodiment (Fig. 3, not shown) a glass plate having parallel sides is disposed between the coherent source and the diffraction grating, thus providing a plurality of parallel beams each of which is split by the diffraction grating into a reference beam and a signal beam, each reference beam and corresponding signal beam being directed to one of a plurality of measuring positions, each having associated with it a corresponding mixer receiver.
GB6167070A 1969-12-29 1970-12-29 Apparatus for detecting or measuring the local velocity of a radiation-permeable medium Expired GB1320390A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1933569A CH517306A (en) 1969-12-29 1969-12-29 Device for measuring the local speed of a radiolucent medium using the Doppler effect

Publications (1)

Publication Number Publication Date
GB1320390A true GB1320390A (en) 1973-06-13

Family

ID=4438804

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6167070A Expired GB1320390A (en) 1969-12-29 1970-12-29 Apparatus for detecting or measuring the local velocity of a radiation-permeable medium

Country Status (6)

Country Link
CA (1) CA928521A (en)
CH (1) CH517306A (en)
DE (2) DE7044695U (en)
FR (1) FR2072093B3 (en)
GB (1) GB1320390A (en)
NL (1) NL7018757A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK409785A (en) * 1985-09-09 1987-03-10 Risoe Forsoegsanlaeg METHOD AND APPARATUS FOR MEASURING OBJECTS ROTARY MOVEMENT OF A BODY ROTATE OF A BODY AND VORTICITY OF A FLOWING MEDIUM

Also Published As

Publication number Publication date
DE7044695U (en) 1971-12-09
FR2072093A7 (en) 1971-09-24
DE2059534C3 (en) 1974-03-14
DE2059534A1 (en) 1971-07-15
NL7018757A (en) 1971-07-01
FR2072093B3 (en) 1973-08-10
DE2059534B2 (en) 1973-08-16
CA928521A (en) 1973-06-19
CH517306A (en) 1971-12-31

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees