FR2443052A1 - Dispositif pour detecter et analyser des signaux acoustiques et ultrasoniques emis dans des corps creux - Google Patents

Dispositif pour detecter et analyser des signaux acoustiques et ultrasoniques emis dans des corps creux

Info

Publication number
FR2443052A1
FR2443052A1 FR7924648A FR7924648A FR2443052A1 FR 2443052 A1 FR2443052 A1 FR 2443052A1 FR 7924648 A FR7924648 A FR 7924648A FR 7924648 A FR7924648 A FR 7924648A FR 2443052 A1 FR2443052 A1 FR 2443052A1
Authority
FR
France
Prior art keywords
hollow bodies
signals emitted
ultrasonic signals
input
amplifier
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
FR7924648A
Other languages
English (en)
Other versions
FR2443052B1 (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.)
CKD Praha DIZ AS
CKD Praha Oborovy Podnik
Original Assignee
CKD Praha DIZ AS
CKD Praha Oborovy Podnik
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 CKD Praha DIZ AS, CKD Praha Oborovy Podnik filed Critical CKD Praha DIZ AS
Publication of FR2443052A1 publication Critical patent/FR2443052A1/fr
Application granted granted Critical
Publication of FR2443052B1 publication Critical patent/FR2443052B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/004—Mounting transducers, e.g. provided with mechanical moving or orienting device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
    • F02M65/003—Measuring variation of fuel pressure in high pressure line
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
    • G01H11/06—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means
    • G01H11/08—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means using piezoelectric devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/0001—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means

Abstract

a. Dispositif destiné à détecter et analyser des signaux acoustiques et ultrasoniques émis dans des corps creux. b. Caractérisé en ce qu'il comprend un instrument de détection piézo-électrique, un amplificateur à haute résistance d'entrée, au moins un circuit sélectif dans l'ordre de fréquence de la bande acoustique, au moins un circuit sélectif dans l'ordre de fréquence de la bande ultrasonique, et un dispositif d'évaluation, tel qu'un oscilloscope, l'instrument de détection piézo-électrique étant relié au coté d'entrée de l'amplificateur à haute résistance d'entrée, les entrées des circuits sélectifs étant reliées en parallèle à la sortie de l'amplificateur, et les sorties des circuits sélectifs étant reliées à l'entrée de l'instrument d'évaluation. c. Dispositif applicable au réglage de l'injection dans des moteurs à combustion interne.
FR7924648A 1978-11-29 1979-10-03 Dispositif pour detecter et analyser des signaux acoustiques et ultrasoniques emis dans des corps creux Granted FR2443052A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS787861A CS205705B1 (en) 1978-11-29 1978-11-29 Facility for scanning and analysis of emitted accoustic and ultrasound signals in the hollow objects

Publications (2)

Publication Number Publication Date
FR2443052A1 true FR2443052A1 (fr) 1980-06-27
FR2443052B1 FR2443052B1 (fr) 1982-12-31

Family

ID=5428484

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7924648A Granted FR2443052A1 (fr) 1978-11-29 1979-10-03 Dispositif pour detecter et analyser des signaux acoustiques et ultrasoniques emis dans des corps creux

Country Status (9)

Country Link
US (1) US4459850A (fr)
CH (1) CH642450A5 (fr)
CS (1) CS205705B1 (fr)
DD (1) DD160641A3 (fr)
DE (1) DE2944807C2 (fr)
FR (1) FR2443052A1 (fr)
GB (1) GB2035560B (fr)
HU (1) HU179139B (fr)
SE (1) SE7909719L (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4444049A (en) * 1980-12-22 1984-04-24 Froude Consine Limited Engine testing apparatus and methods
GB2122252A (en) * 1982-06-21 1984-01-11 Froude Eng Ltd Stroboscopic engine fuel-injection timing
JPS60140153A (ja) * 1983-12-28 1985-07-25 Toshiba Corp 超音波探触子の製造方法
JPS62150610A (ja) * 1985-12-25 1987-07-04 株式会社日立製作所 入力装置
JPS62226033A (ja) * 1986-03-28 1987-10-05 Agency Of Ind Science & Technol メカニカルシ−ル摺動状態評価装置
GB8610671D0 (en) * 1986-05-01 1986-06-04 Atomic Energy Authority Uk Flow monitoring
JPH0711466B2 (ja) * 1987-04-28 1995-02-08 株式会社荏原製作所 メカニカルシールの運転状態監視方法
US4833453A (en) * 1988-02-04 1989-05-23 Westinghouse Electric Corp. Monitoring of movable components
US5176032A (en) * 1990-02-21 1993-01-05 Stresswave Technology Limited Method and apparatus for processing electrical signals and a stress wave sensor
FR2675542B1 (fr) * 1991-04-16 1995-01-27 Jean Coton Procede et dispositif pour la mesure de la pression des carburants injectes a l'interieur des tubes d'injection d'un moteur diesel.
CA2136298A1 (fr) * 1993-11-23 1995-05-24 Vernon D. Gebben Methode et appareil pour accroitre la production de tio2
GB9518151D0 (en) * 1995-09-06 1995-11-08 Amp Great Britain Interchangeable vessel Having a Level Sensor Therewith
DE19612013A1 (de) * 1996-03-15 1997-09-18 Volker Dipl Phys Haenel Piezoelektrischer Breitbandwandler
DE102004031239A1 (de) * 2004-06-29 2006-01-19 Daimlerchrysler Ag Sensorsystem für ein Fahrzeug
CN114441028B (zh) * 2020-10-30 2024-04-23 深圳富桂精密工业有限公司 冲压异常检测系统

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3166730A (en) * 1959-09-29 1965-01-19 Jr James R Brown Annular electrostrictive transducer
US3393557A (en) * 1967-06-29 1968-07-23 Texaco Inc Apparatus for measuring selected engine vibration characteristics
US3531983A (en) * 1967-10-06 1970-10-06 Heath Intern Inc Sonic pole testing apparatus
US3548648A (en) * 1968-04-15 1970-12-22 Gen Electric Sonic worn cutting tool detector
US3587561A (en) * 1969-06-05 1971-06-28 Hoffmann La Roche Ultrasonic transducer assembly for biological monitoring
US3580057A (en) * 1969-06-19 1971-05-25 Univ Utah Probe device usable in measuring stress
US3603152A (en) * 1970-02-05 1971-09-07 Columbia Research Lab Inc Transducer for detecting pressure changes in fluid flow
US3793627A (en) * 1972-06-28 1974-02-19 Gen Electric Automatic sonic detection of chipped cutting tools
US3786285A (en) * 1972-12-08 1974-01-15 R Reibold Moment actuated transducer
CS164103B1 (fr) * 1973-08-30 1975-11-07
AT375466B (de) * 1977-07-27 1984-08-10 List Hans Messwertaufnehmer mit einem piezoelektrischen messelement

Also Published As

Publication number Publication date
SE7909719L (sv) 1980-05-30
CS205705B1 (en) 1981-05-29
US4459850A (en) 1984-07-17
DE2944807C2 (de) 1986-07-10
DE2944807A1 (de) 1980-06-12
CH642450A5 (de) 1984-04-13
GB2035560B (en) 1983-04-13
HU179139B (en) 1982-08-28
GB2035560A (en) 1980-06-18
DD160641A3 (de) 1984-01-04
FR2443052B1 (fr) 1982-12-31

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Legal Events

Date Code Title Description
ST Notification of lapse