FR2368013A1 - Procede pour le declenchement de l'impulsion d'emission dans les mesures du temps d - Google Patents

Procede pour le declenchement de l'impulsion d'emission dans les mesures du temps d

Info

Publication number
FR2368013A1
FR2368013A1 FR7708536A FR7708536A FR2368013A1 FR 2368013 A1 FR2368013 A1 FR 2368013A1 FR 7708536 A FR7708536 A FR 7708536A FR 7708536 A FR7708536 A FR 7708536A FR 2368013 A1 FR2368013 A1 FR 2368013A1
Authority
FR
France
Prior art keywords
pulse
triggering
time interval
receiver
measures
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
FR7708536A
Other languages
English (en)
Other versions
FR2368013B1 (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.)
Krautkraemer GmbH and Co
Krautkraemer GmbH
Original Assignee
Krautkraemer GmbH and Co
Krautkraemer GmbH
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 Krautkraemer GmbH and Co, Krautkraemer GmbH filed Critical Krautkraemer GmbH and Co
Publication of FR2368013A1 publication Critical patent/FR2368013A1/fr
Application granted granted Critical
Publication of FR2368013B1 publication Critical patent/FR2368013B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
    • G01B17/02—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations for measuring thickness
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/04—Analysing solids
    • G01N29/07—Analysing solids by measuring propagation velocity or propagation time of acoustic waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/34—Generating the ultrasonic, sonic or infrasonic waves, e.g. electronic circuits specially adapted therefor
    • G01N29/341—Generating the ultrasonic, sonic or infrasonic waves, e.g. electronic circuits specially adapted therefor with time characteristics
    • G01N29/343—Generating the ultrasonic, sonic or infrasonic waves, e.g. electronic circuits specially adapted therefor with time characteristics pulse waves, e.g. particular sequence of pulses, bursts
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/64—Generators producing trains of pulses, i.e. finite sequences of pulses
    • H03K3/66—Generators producing trains of pulses, i.e. finite sequences of pulses by interrupting the output of a generator
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/028—Material parameters
    • G01N2291/02854—Length, thickness

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Measurement Of Unknown Time Intervals (AREA)

Abstract

a. Procédé pour le déclenchement de l'impulsion d'émission dans les mesures du temps de parcours d'impulsions, telles que des impulsions ultrasonores engendrées par un moyen électronique; b. Procédé caractérisé en ce que dans un étage à bascule dont la fréquence est réglée par des éléments de circuit, un intervalle de temps entre impulsions prédéterminé plus long est donné pour chaque impulsion d'émission, tandis que les signaux parasites provenant de la mesure précédente, et qui arrivent à Cet étage à bascule par l'intermédiaire du récepteur dépassent une valeur de seuil d'évaluation, remettent en position de départ l'étage à bascule, qui est ensuite remis à nouveau en fonctionnement, et, dans le cas où aucun nouveau signal parasite n'arrive à l'entrée du récepteur, reforme une nouvelle impulsion d'émission après écoulement de cet intervalle de temps.
FR7708536A 1976-10-15 1977-03-22 Procede pour le declenchement de l'impulsion d'emission dans les mesures du temps d Granted FR2368013A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2646541A DE2646541C2 (de) 1976-10-15 1976-10-15 Verfahren zur Auslösung von Sendeimpulsen bei der Dickenmessung von Prüfstücken mittels Ultraschallsignalen

Publications (2)

Publication Number Publication Date
FR2368013A1 true FR2368013A1 (fr) 1978-05-12
FR2368013B1 FR2368013B1 (fr) 1982-08-06

Family

ID=5990508

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7708536A Granted FR2368013A1 (fr) 1976-10-15 1977-03-22 Procede pour le declenchement de l'impulsion d'emission dans les mesures du temps d

Country Status (6)

Country Link
US (1) US4098131A (fr)
JP (1) JPS5856085B2 (fr)
DE (1) DE2646541C2 (fr)
FR (1) FR2368013A1 (fr)
GB (1) GB1577620A (fr)
IT (1) IT1076994B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994010533A1 (fr) * 1992-10-28 1994-05-11 Mesys Gmbh Mess Und Regelsyste Procede et dispositif permettant de determiner sans contact la masse par unite de surface de materiaux minces

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5892811A (ja) * 1980-12-08 1983-06-02 Teitsuu Denshi Kenkyusho:Kk 超音波式厚さ測定方法
JPS57129164U (fr) * 1981-02-03 1982-08-12
DE3324341C2 (de) * 1983-07-06 1986-02-13 Ralf 6750 Kaiserslautern Hinkel Einrichtung zur genauen Bestimmung kurzer Laufzeiten von elektronisch erzeugten Impulsen
DE3435989A1 (de) * 1984-10-01 1986-04-03 Nukem Gmbh, 6450 Hanau Verfahren zur wanddickenmessung von koerpern mittels ultraschallimpulsen und vorrichtung zur durchfuehrung des verfahrens
JPS6474444A (en) * 1987-09-16 1989-03-20 Nippon Steel Corp Ultrasonic diagnosing method for lining refractory material
DE3741338A1 (de) * 1987-12-07 1989-06-15 Rump Elektronik Tech Apparat und verfahren zur elektronischen distanzvermessung mit hilfe der laufzeitbestimmung von wellenfoermigen impulsen
DE3810512A1 (de) * 1988-03-28 1989-10-12 Johann Hipp Verfahren und vorrichtung zur entfernungsmessung mit schwachen laserlichtpulsen
US5349860A (en) * 1989-11-28 1994-09-27 Nkk Corporation Apparatus for measuring the thickness of clad material
JPH0616484U (ja) * 1992-07-30 1994-03-04 柏木 壮造 織機の筬
DE4414514A1 (de) * 1994-04-26 1995-11-02 Klaus Deichl Verfahren zur Ermittlung der zwischen zwei Meßorten liegenden Strecke und Vorrichtung zur Durchführung des Verfahrens
US5907100A (en) * 1997-06-30 1999-05-25 Gas Research Institute Method and system for detecting and displaying defects in piping
US6601451B1 (en) 2001-06-20 2003-08-05 Iowa State University Research Foundation System and method to provide material property measurement using re-entrant ultrasound
DE102017207269A1 (de) * 2017-04-28 2018-10-31 Siemens Aktiengesellschaft Vorrichtung und Verfahren zur Ultraschallprüfung

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3588795A (en) * 1969-02-27 1971-06-28 Lykes Bros Inc Depth indicator
US3929006A (en) * 1973-11-26 1975-12-30 Western Electric Co Measuring article thickness ultrasonically

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE589368C (fr) *
DE911823C (de) * 1938-12-03 1954-05-20 Atlas Werke Ag Vorrichtung zur Entfernungsmessung nach der Echomethode

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3588795A (en) * 1969-02-27 1971-06-28 Lykes Bros Inc Depth indicator
US3929006A (en) * 1973-11-26 1975-12-30 Western Electric Co Measuring article thickness ultrasonically

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994010533A1 (fr) * 1992-10-28 1994-05-11 Mesys Gmbh Mess Und Regelsyste Procede et dispositif permettant de determiner sans contact la masse par unite de surface de materiaux minces

Also Published As

Publication number Publication date
DE2646541C2 (de) 1986-08-28
US4098131A (en) 1978-07-04
IT1076994B (it) 1985-04-27
FR2368013B1 (fr) 1982-08-06
JPS5349459A (en) 1978-05-04
DE2646541A1 (de) 1978-04-20
GB1577620A (en) 1980-10-29
JPS5856085B2 (ja) 1983-12-13

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse