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FR2426248A1 - DEVICE FOR MEASURING THE TRANSIT TIME OF AN ULTRASONIC SIGNAL - Google Patents

DEVICE FOR MEASURING THE TRANSIT TIME OF AN ULTRASONIC SIGNAL

Info

Publication number
FR2426248A1
FR2426248A1 FR7912503A FR7912503A FR2426248A1 FR 2426248 A1 FR2426248 A1 FR 2426248A1 FR 7912503 A FR7912503 A FR 7912503A FR 7912503 A FR7912503 A FR 7912503A FR 2426248 A1 FR2426248 A1 FR 2426248A1
Authority
FR
France
Prior art keywords
measuring
transit time
ultrasonic
ultrasonic signal
signal
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
FR7912503A
Other languages
French (fr)
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric 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 Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Publication of FR2426248A1 publication Critical patent/FR2426248A1/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
    • G01F1/667—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 Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Measurement Of Unknown Time Intervals (AREA)

Abstract

L'invention concerne les appareils de mesure à ultrasons. Un dispositif de mesure du temps de transit d'un signal ultrasonore comporte un détecteur d'anomalie 13 qui reçoit le signal de sortie Z du circuit de réception 4, et le signal de fin de comptage W d'un compteur 5 qui est attaqué par un oscillateur fréquence variable 1. Le détecteur 13 fournit en sortie une indication d'anomalie lorsque le signal de sortie Z arrive hors d'une plage prédéterminée qui correspond aux conditions normales de fonctionnement Application aux débitmètres ultrasonores.The invention relates to ultrasonic measuring devices. A device for measuring the transit time of an ultrasonic signal comprises an anomaly detector 13 which receives the output signal Z from the reception circuit 4, and the end of counting signal W from a counter 5 which is driven by a variable frequency oscillator 1. The detector 13 provides at output an anomaly indication when the output signal Z arrives outside a predetermined range which corresponds to the normal operating conditions. Application to ultrasonic flowmeters.

FR7912503A 1978-05-16 1979-05-16 DEVICE FOR MEASURING THE TRANSIT TIME OF AN ULTRASONIC SIGNAL Pending FR2426248A1 (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
FR2426248A1 true FR2426248A1 (en) 1979-12-14

Family

ID=13066575

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7912503A Pending FR2426248A1 (en) 1978-05-16 1979-05-16 DEVICE FOR MEASURING THE TRANSIT TIME OF AN ULTRASONIC 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 propagation time detection method
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

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3818757A (en) * 1972-05-05 1974-06-25 Saratoga Sys Inc Dual path ultrasonic fluid flow metering system and method
US3894431A (en) * 1972-04-04 1975-07-15 Atomic Energy Authority Uk Apparatus for indicating fluid flow velocity
DE2732074A1 (en) * 1976-07-16 1978-01-19 Nippon Kokan Kk DEVICE FOR DETERMINING CHANGES IN THE PARAMETERS OF A LIQUID FLOWING IN A PIPELINE ACCORDING TO THE FEEDBACK (WHISTLE) PROCEDURE
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
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
DE2832835A1 (en) * 1977-07-26 1979-03-01 Fuji Electric Co Ltd ULTRASONIC MEASURING ARRANGEMENT

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49130261A (en) * 1973-04-13 1974-12-13

Patent Citations (6)

* 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
DE2732074A1 (en) * 1976-07-16 1978-01-19 Nippon Kokan Kk DEVICE FOR DETERMINING CHANGES IN THE PARAMETERS OF A LIQUID FLOWING IN A PIPELINE ACCORDING TO THE FEEDBACK (WHISTLE) PROCEDURE
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
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
DE2832835A1 (en) * 1977-07-26 1979-03-01 Fuji Electric Co Ltd ULTRASONIC MEASURING ARRANGEMENT

Also Published As

Publication number Publication date
GB2021768B (en) 1982-08-18
DE2920177A1 (en) 1979-11-22
NL7903821A (en) 1979-11-20
GB2021768A (en) 1979-12-05
JPS54149670A (en) 1979-11-24
DK200579A (en) 1979-11-17

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