JPS5595883A - Method and device for flow speed distribution and flow amount measurement by multicarrier system laser doppler method - Google Patents

Method and device for flow speed distribution and flow amount measurement by multicarrier system laser doppler method

Info

Publication number
JPS5595883A
JPS5595883A JP323679A JP323679A JPS5595883A JP S5595883 A JPS5595883 A JP S5595883A JP 323679 A JP323679 A JP 323679A JP 323679 A JP323679 A JP 323679A JP S5595883 A JPS5595883 A JP S5595883A
Authority
JP
Japan
Prior art keywords
beams
point
flow speed
scattered
fluid
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
JP323679A
Other languages
Japanese (ja)
Inventor
Noboru Nakatani
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP323679A priority Critical patent/JPS5595883A/en
Publication of JPS5595883A publication Critical patent/JPS5595883A/en
Pending legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)
  • Optical Radar Systems And Details Thereof (AREA)

Abstract

PURPOSE:To simplify the constitution by putting a number of beams of different frequencies into each point of the fluid and thus securing the multipoint simultaneous measurement for the flow speed by the multicarrier system. CONSTITUTION:The beams sent from laser LA are divided by mirror M1 and then condensed onto rotary diffraction grating G, and the diffracted rays are made to pass through zoom lens ZL and density filter F to obtain a number of reference beams featuring different frequencies. The beams divided by mirror M1 are condensed into the fluid field via full reflector M2 and spherical lens L3. The beams scattered by the scattered particles in the fluid are image-formed on image surface IP through spherical lens L2. The interference beams of the scattered beams and the reference beams at each image formation point are led onto photomultiplier PM via several pieces of optical fibers OF. And the signals received the Doppler frequency deflection and corresponding to the flow speed value at each point are delivered from PM to the different carrier frequencies corresponding to each point. These signals are led to signal processor CP via filter EF and multiplexer MP each.
JP323679A 1979-01-13 1979-01-13 Method and device for flow speed distribution and flow amount measurement by multicarrier system laser doppler method Pending JPS5595883A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP323679A JPS5595883A (en) 1979-01-13 1979-01-13 Method and device for flow speed distribution and flow amount measurement by multicarrier system laser doppler method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP323679A JPS5595883A (en) 1979-01-13 1979-01-13 Method and device for flow speed distribution and flow amount measurement by multicarrier system laser doppler method

Publications (1)

Publication Number Publication Date
JPS5595883A true JPS5595883A (en) 1980-07-21

Family

ID=11551810

Family Applications (1)

Application Number Title Priority Date Filing Date
JP323679A Pending JPS5595883A (en) 1979-01-13 1979-01-13 Method and device for flow speed distribution and flow amount measurement by multicarrier system laser doppler method

Country Status (1)

Country Link
JP (1) JPS5595883A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59656A (en) * 1982-04-07 1984-01-05 フオルソグサンレ−グ，リン Method and device for measuring velocity gradient in fluidized medium
JPH05244477A (en) * 1991-10-18 1993-09-21 Olympus Optical Co Ltd Automatic focusing device
JPH07297498A (en) * 1994-03-01 1995-11-10 Seiko Epson Corp Semiconductor laser and optical sensing device using the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59656A (en) * 1982-04-07 1984-01-05 フオルソグサンレ−グ，リン Method and device for measuring velocity gradient in fluidized medium
JPH05244477A (en) * 1991-10-18 1993-09-21 Olympus Optical Co Ltd Automatic focusing device
JPH07297498A (en) * 1994-03-01 1995-11-10 Seiko Epson Corp Semiconductor laser and optical sensing device using the same

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