DK200579A - EQUIPMENT FOR MEASURING THE WALKING TIME OF AN ULTRASOUND SIGNAL - Google Patents

EQUIPMENT FOR MEASURING THE WALKING TIME OF AN ULTRASOUND SIGNAL

Info

Publication number
DK200579A
DK200579A DK200579A DK200579A DK200579A DK 200579 A DK200579 A DK 200579A DK 200579 A DK200579 A DK 200579A DK 200579 A DK200579 A DK 200579A DK 200579 A DK200579 A DK 200579A
Authority
DK
Denmark
Prior art keywords
measuring
equipment
ultrasound signal
walking time
walking
Prior art date
Application number
DK200579A
Other languages
Danish (da)
Inventor
M Kohno
Y Nakagawa
T Kada
G Okawara
Original Assignee
Fuji Electric Co Ltd
Cho Onpa Kogyo Co
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 Fuji Electric Co Ltd, Cho Onpa Kogyo Co filed Critical Fuji Electric Co Ltd
Publication of DK200579A publication Critical patent/DK200579A/en

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
    • G01F1/667—Arrangements of transducers for ultrasonic flowmeters; Circuits for operating ultrasonic flowmeters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/296—Acoustic waves
    • G01F23/2962—Measuring transit time of reflected waves

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Thermal Sciences (AREA)
  • Measuring Volume Flow (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
DK200579A 1978-05-16 1979-05-15 EQUIPMENT FOR MEASURING THE WALKING TIME OF AN ULTRASOUND SIGNAL DK200579A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5782178A JPS54149670A (en) 1978-05-16 1978-05-16 Circuit device for detecting ultrasonic wave propagating time

Publications (1)

Publication Number Publication Date
DK200579A true DK200579A (en) 1979-11-17

Family

ID=13066575

Family Applications (1)

Application Number Title Priority Date Filing Date
DK200579A DK200579A (en) 1978-05-16 1979-05-15 EQUIPMENT FOR MEASURING THE WALKING TIME OF AN ULTRASOUND SIGNAL

Country Status (6)

Country Link
JP (1) JPS54149670A (en)
DE (1) DE2920177A1 (en)
DK (1) DK200579A (en)
FR (1) FR2426248A1 (en)
GB (1) GB2021768B (en)
NL (1) NL7903821A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5752815A (en) * 1980-09-16 1982-03-29 Yokogawa Hokushin Electric Corp Processing circuit for ultrasonic wave signal
JPS5827086A (en) * 1981-08-11 1983-02-17 Fuji Electric Co Ltd Ultrasonic wave propagation time detector
DE3316630C2 (en) * 1983-05-06 1985-07-25 Erwin Sick Gmbh Optik-Elektronik, 7808 Waldkirch Device for determining the transit time of ultrasonic pulses in a fluid
JPH0749976B2 (en) * 1986-02-26 1995-05-31 富士電機株式会社 Ultrasonic measuring device
GB8918068D0 (en) * 1989-08-08 1989-09-20 Front Engineering Ltd An apparatus for determining the time taken for sound to cross a body of fluid in an enclosure
JP4538163B2 (en) * 2001-03-30 2010-09-08 サーパス工業株式会社 Flow rate measuring method, flow rate measuring device, flow rate measuring method, and flow rate measuring device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3894431A (en) * 1972-04-04 1975-07-15 Atomic Energy Authority Uk Apparatus for indicating fluid flow velocity
US3818757A (en) * 1972-05-05 1974-06-25 Saratoga Sys Inc Dual path ultrasonic fluid flow metering system and method
JPS49130261A (en) * 1973-04-13 1974-12-13
JPS5310454A (en) * 1976-07-16 1978-01-30 Nippon Kokan Kk Apparatus for detecting change of fluid character by singgaround method
DE2641772A1 (en) * 1976-09-14 1978-03-16 Fuji Electric Co Ltd Throughflow or current measuring instrument - has time-difference measuring instrument detecting oscillator pulses and further pulses
DE2641771A1 (en) * 1976-09-14 1978-03-16 Fuji Electric Co Ltd Time difference measuring device - compares measured time difference and reference value for ultrasonic velocimeter
JPS5829854B2 (en) * 1977-07-26 1983-06-25 富士電機株式会社 Ultrasonic measuring device

Also Published As

Publication number Publication date
GB2021768B (en) 1982-08-18
NL7903821A (en) 1979-11-20
GB2021768A (en) 1979-12-05
DE2920177A1 (en) 1979-11-22
JPS54149670A (en) 1979-11-24
FR2426248A1 (en) 1979-12-14

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Legal Events

Date Code Title Description
AHS Application shelved for other reasons than non-payment