FR2592720A1 - Appareil d'examen de milieux par echographie ultrasonore - Google Patents

Appareil d'examen de milieux par echographie ultrasonore

Info

Publication number
FR2592720A1
FR2592720A1 FR8600036A FR8600036A FR2592720A1 FR 2592720 A1 FR2592720 A1 FR 2592720A1 FR 8600036 A FR8600036 A FR 8600036A FR 8600036 A FR8600036 A FR 8600036A FR 2592720 A1 FR2592720 A1 FR 2592720A1
Authority
FR
France
Prior art keywords
examining
environments
technique
delay
linked
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
FR8600036A
Other languages
English (en)
Other versions
FR2592720B1 (fr
Inventor
Patrick Pesque
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.)
PEUGEOT and RENAULT
Original Assignee
PEUGEOT and RENAULT
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 PEUGEOT and RENAULT filed Critical PEUGEOT and RENAULT
Priority to FR8600036A priority Critical patent/FR2592720B1/fr
Publication of FR2592720A1 publication Critical patent/FR2592720A1/fr
Application granted granted Critical
Publication of FR2592720B1 publication Critical patent/FR2592720B1/fr
Expired 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
    • G10K11/18—Methods or devices for transmitting, conducting or directing sound
    • G10K11/26—Sound-focusing or directing, e.g. scanning
    • G10K11/34—Sound-focusing or directing, e.g. scanning using electrical steering of transducer arrays, e.g. beam steering
    • G10K11/341—Circuits therefor
    • G10K11/345—Circuits therefor using energy switching from one active element to another
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
    • G01S7/52017—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00 particularly adapted to short-range imaging
    • G01S7/52046—Techniques for image enhancement involving transmitter or receiver

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

Appareil d'examen de milieux par échographie ultrasonore comprenant un réseau linéaire d'éléments transducteurs 20a à 20n équipé d'une lentille acoustique et associé à des étages d'émission, de réception et de focalisation. Selon l'invention, l'étage de focalisation comprend un circuit 100 d'ajustement de la distance focale de la lentille acoustique, comprenant lui-même n circuits de commutation de lignes à retard 120a à 120n, et l'électrode d'excitation de chaque élément transducteur est constituée d'une électrode centrale 21 reliée à l'une des connexions d'entrée-sortie du circuit à commutation de lignes à retard qui est respectivement associé à l'élément transducteur considéré et de deux électrodes latérales 22a et 22b reliées entre elles et à l'autre desdites connexions d'entrée-sortie. (CF DESSIN DANS BOPI)
FR8600036A 1986-01-03 1986-01-03 Appareil d'examen de milieux par echographie ultrasonore Expired FR2592720B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8600036A FR2592720B1 (fr) 1986-01-03 1986-01-03 Appareil d'examen de milieux par echographie ultrasonore

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8600036A FR2592720B1 (fr) 1986-01-03 1986-01-03 Appareil d'examen de milieux par echographie ultrasonore

Publications (2)

Publication Number Publication Date
FR2592720A1 true FR2592720A1 (fr) 1987-07-10
FR2592720B1 FR2592720B1 (fr) 1988-08-05

Family

ID=9330820

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8600036A Expired FR2592720B1 (fr) 1986-01-03 1986-01-03 Appareil d'examen de milieux par echographie ultrasonore

Country Status (1)

Country Link
FR (1) FR2592720B1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3936791A (en) * 1973-09-13 1976-02-03 The Commonwealth Of Australia Linear array ultrasonic transducer
FR2324004A1 (fr) * 1975-09-15 1977-04-08 Commw Of Australia Perfectionnements apportes aux dispositifs pour l'examen ultrasonique
GB1552431A (en) * 1976-06-21 1979-09-12 Whittingham T A Methodology and apparatus for rapid diagnostic scanning with ultrasonic transducer arrays
US4180790A (en) * 1977-12-27 1979-12-25 General Electric Company Dynamic array aperture and focus control for ultrasonic imaging systems
GB2041525A (en) * 1979-02-05 1980-09-10 Varian Associates Ultrasonic imaging system utilizing dynamic and pseudo-dynamic focusing
US4235111A (en) * 1976-09-29 1980-11-25 Siemens Aktiengesellschaft Apparatus for ultrasonic scanning
FR2507078A1 (fr) * 1980-02-08 1982-12-10 Stanford Res Inst Int Procede et dispositif d'echographie ultrasonore

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3936791A (en) * 1973-09-13 1976-02-03 The Commonwealth Of Australia Linear array ultrasonic transducer
FR2324004A1 (fr) * 1975-09-15 1977-04-08 Commw Of Australia Perfectionnements apportes aux dispositifs pour l'examen ultrasonique
GB1552431A (en) * 1976-06-21 1979-09-12 Whittingham T A Methodology and apparatus for rapid diagnostic scanning with ultrasonic transducer arrays
US4235111A (en) * 1976-09-29 1980-11-25 Siemens Aktiengesellschaft Apparatus for ultrasonic scanning
US4180790A (en) * 1977-12-27 1979-12-25 General Electric Company Dynamic array aperture and focus control for ultrasonic imaging systems
GB2041525A (en) * 1979-02-05 1980-09-10 Varian Associates Ultrasonic imaging system utilizing dynamic and pseudo-dynamic focusing
FR2507078A1 (fr) * 1980-02-08 1982-12-10 Stanford Res Inst Int Procede et dispositif d'echographie ultrasonore

Also Published As

Publication number Publication date
FR2592720B1 (fr) 1988-08-05

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Legal Events

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CJ Change in legal form
ST Notification of lapse