JPS5562378A - Flowing speed measuring device - Google Patents

Flowing speed measuring device

Info

Publication number
JPS5562378A
JPS5562378A JP13449678A JP13449678A JPS5562378A JP S5562378 A JPS5562378 A JP S5562378A JP 13449678 A JP13449678 A JP 13449678A JP 13449678 A JP13449678 A JP 13449678A JP S5562378 A JPS5562378 A JP S5562378A
Authority
JP
Japan
Prior art keywords
flowing speed
receivers
sound wave
measuring device
arrival
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.)
Granted
Application number
JP13449678A
Other languages
Japanese (ja)
Other versions
JPS5939711B2 (en
Inventor
Takehiro Shimizu
Akio Kono
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.)
Nippon Res & Syst
Nippon Res & Syst kk
Osaka Gas Co Ltd
Original Assignee
Nippon Res & Syst
Nippon Res & Syst kk
Osaka Gas 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 Nippon Res & Syst, Nippon Res & Syst kk, Osaka Gas Co Ltd filed Critical Nippon Res & Syst
Priority to JP53134496A priority Critical patent/JPS5939711B2/en
Publication of JPS5562378A publication Critical patent/JPS5562378A/en
Publication of JPS5939711B2 publication Critical patent/JPS5939711B2/en
Expired 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
    • G01P5/24—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 acoustical wave
    • G01P5/245—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 acoustical wave by measuring transit time of acoustical waves
    • G01P5/248—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 acoustical wave by measuring transit time of acoustical waves by measuring phase differences

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
  • Measuring Volume Flow (AREA)

Abstract

PURPOSE:To realize a constitution with no mechanical movable part for the sensor and thus to obtain a small-size device featuring a high duarability by installing two units of receivers in opposition to each other at the positions equidistant from the sound wave transmitter and then detecting the time difference of arrival of the sound wave to the two receivers. CONSTITUTION:Receivers B and C are installed at the positions equidistant from sound wave transmitter A. In addition to these component parts, amplifiers AMP1 and 2, phase shifter PS and phase meter PM are provided. The coincidence is obtained between the flowing direction of the fluid and the BC line to feature BC= 2l and BAC=2theta. Thus the phase difference equivalent to time difference dt of arrival of sound waves featuring frequency f to B and C from transmitter A at the flowing speed of V becomes approximately as shown in the right equation. Accordingly, the flowing speed can be detected by detecting dt. In such way, the sensor having no mechanical movable part can be used, thus obtaining a small-size and high-durability flowing speed measuring device in various types.
JP53134496A 1978-11-02 1978-11-02 Flow velocity and direction measuring device Expired JPS5939711B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53134496A JPS5939711B2 (en) 1978-11-02 1978-11-02 Flow velocity and direction measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53134496A JPS5939711B2 (en) 1978-11-02 1978-11-02 Flow velocity and direction measuring device

Publications (2)

Publication Number Publication Date
JPS5562378A true JPS5562378A (en) 1980-05-10
JPS5939711B2 JPS5939711B2 (en) 1984-09-26

Family

ID=15129670

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53134496A Expired JPS5939711B2 (en) 1978-11-02 1978-11-02 Flow velocity and direction measuring device

Country Status (1)

Country Link
JP (1) JPS5939711B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56157861A (en) * 1980-05-09 1981-12-05 Tdk Corp Measuring system for velocity of flow of fluid
JPS6126884A (en) * 1984-07-18 1986-02-06 Dia Consultant:Kk Movement surveying method of ground water
JPH0298633A (en) * 1988-10-05 1990-04-11 Corona Dengiyou Kk Ultrasonic current meter
US5388623A (en) * 1991-12-17 1995-02-14 Homma Science Corporation Elastic wheels and a pair of skis provided with the elastic wheels

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6274112U (en) * 1985-10-29 1987-05-12

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56157861A (en) * 1980-05-09 1981-12-05 Tdk Corp Measuring system for velocity of flow of fluid
JPS6126884A (en) * 1984-07-18 1986-02-06 Dia Consultant:Kk Movement surveying method of ground water
JPH0298633A (en) * 1988-10-05 1990-04-11 Corona Dengiyou Kk Ultrasonic current meter
US5388623A (en) * 1991-12-17 1995-02-14 Homma Science Corporation Elastic wheels and a pair of skis provided with the elastic wheels
US5538057A (en) * 1991-12-17 1996-07-23 Homma Science Corporation Elastic wheels and a pair of skis provided with the elastic wheels

Also Published As

Publication number Publication date
JPS5939711B2 (en) 1984-09-26

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CRETU A differential method for determining the electrical angle cosine and the amplitude ratio of two sinusoidal voltages of the same frequency by equalizing the moduli