JPS57124255A - Measuring method for velocity of powdered and granular body - Google Patents

Measuring method for velocity of powdered and granular body

Info

Publication number
JPS57124255A
JPS57124255A JP991081A JP991081A JPS57124255A JP S57124255 A JPS57124255 A JP S57124255A JP 991081 A JP991081 A JP 991081A JP 991081 A JP991081 A JP 991081A JP S57124255 A JPS57124255 A JP S57124255A
Authority
JP
Japan
Prior art keywords
frequency component
band
powdered
ratio
frequency
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
JP991081A
Other languages
Japanese (ja)
Inventor
Noriyuki Kawada
Kosuke Yamashita
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 Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries 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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP991081A priority Critical patent/JPS57124255A/en
Publication of JPS57124255A publication Critical patent/JPS57124255A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)

Abstract

PURPOSE:To measure a flow velocity in high accuracy, by dividing a frequency component of reflected light of light irradiated on a powdered and granular body into the plural component and finding a ratio of its intensity. CONSTITUTION:Light from a luminescent apparatus 9 passes through an optical sensor 1 constituted by optical fibers and is irradiated 3 to a fluidized powdered and granular body 2 and then, is reflected and is scattered. A reflected light 4 is converted into an electric signal by a photoelectric converter 5 and is amplified by an amplifier 6. Frequency components of this scattered light signal are contained a higher frequency component in accordance with high flowing velocity. Two frequency components of the scattered light signal are taken out by a band-pass filter 7b passing through a comparatively high frequency band and a band-pass filter 7a passing through a low frequency band. A low frequency component is damped to the same level of the high frequency component by an attenuator 10 and a ratio of both frequency is found by a divider 8. The flowing velocity is known by measuring said ratio because the more the high frequency component is rich the more the flowing velocity is high.
JP991081A 1981-01-26 1981-01-26 Measuring method for velocity of powdered and granular body Pending JPS57124255A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP991081A JPS57124255A (en) 1981-01-26 1981-01-26 Measuring method for velocity of powdered and granular body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP991081A JPS57124255A (en) 1981-01-26 1981-01-26 Measuring method for velocity of powdered and granular body

Publications (1)

Publication Number Publication Date
JPS57124255A true JPS57124255A (en) 1982-08-03

Family

ID=11733256

Family Applications (1)

Application Number Title Priority Date Filing Date
JP991081A Pending JPS57124255A (en) 1981-01-26 1981-01-26 Measuring method for velocity of powdered and granular body

Country Status (1)

Country Link
JP (1) JPS57124255A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02154114A (en) * 1988-12-06 1990-06-13 Babcock Hitachi Kk Granule flow rate measuring instrument
JPH0496124U (en) * 1991-07-03 1992-08-20

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02154114A (en) * 1988-12-06 1990-06-13 Babcock Hitachi Kk Granule flow rate measuring instrument
JPH0496124U (en) * 1991-07-03 1992-08-20

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