FR2466912B1 - - Google Patents

Info

Publication number
FR2466912B1
FR2466912B1 FR8020438A FR8020438A FR2466912B1 FR 2466912 B1 FR2466912 B1 FR 2466912B1 FR 8020438 A FR8020438 A FR 8020438A FR 8020438 A FR8020438 A FR 8020438A FR 2466912 B1 FR2466912 B1 FR 2466912B1
Authority
FR
France
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.)
Expired
Application number
FR8020438A
Other languages
French (fr)
Other versions
FR2466912A1 (en
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.)
Nukem GmbH
Original Assignee
Nukem 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 Nukem GmbH filed Critical Nukem GmbH
Publication of FR2466912A1 publication Critical patent/FR2466912A1/en
Application granted granted Critical
Publication of FR2466912B1 publication Critical patent/FR2466912B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B11/00—Transmission systems employing sonic, ultrasonic or infrasonic waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H3/00—Measuring characteristics of vibrations by using a detector in a fluid
    • G01H3/10—Amplitude; Power
    • G01H3/12—Amplitude; Power by electric means
    • 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
    • G01N29/36—Detecting the response signal, e.g. electronic circuits specially adapted therefor
    • G01N29/40—Detecting the response signal, e.g. electronic circuits specially adapted therefor by amplitude filtering, e.g. by applying a threshold or by gain control
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G7/00—Synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/62—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for providing a predistortion of the signal in the transmitter and corresponding correction in the receiver, e.g. for improving the signal/noise ratio
    • H04B1/64—Volume compression or expansion arrangements

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Analytical Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Analogue/Digital Conversion (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
FR8020438A 1979-09-29 1980-09-23 Wide band signal processor coping with wide dynamic range - has linear preamplifier supplying logarithmic amplifier and A=D converter for digitalised test signal Granted FR2466912A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2939617A DE2939617C2 (en) 1979-09-29 1979-09-29 Device for fast and distortion-free conversion of the analog ultrasonic test signals generated by a detector into digital signals

Publications (2)

Publication Number Publication Date
FR2466912A1 FR2466912A1 (en) 1981-04-10
FR2466912B1 true FR2466912B1 (en) 1984-01-06

Family

ID=6082288

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8020438A Granted FR2466912A1 (en) 1979-09-29 1980-09-23 Wide band signal processor coping with wide dynamic range - has linear preamplifier supplying logarithmic amplifier and A=D converter for digitalised test signal

Country Status (7)

Country Link
JP (1) JPS5651660A (en)
BR (1) BR8006147A (en)
CA (1) CA1161542A (en)
DE (1) DE2939617C2 (en)
FR (1) FR2466912A1 (en)
IT (1) IT1129268B (en)
SE (1) SE449930B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57201806A (en) * 1981-06-08 1982-12-10 Aloka Co Ltd Ultrasonic diagnostic device
JPS6123967A (en) * 1984-07-11 1986-02-01 Kubota Ltd Ultrasonic flaw detecting device
DE3625618A1 (en) * 1985-11-02 1988-02-11 Deutsche Forsch Luft Raumfahrt METHOD FOR DIGITAL PEAK VALUE MEASUREMENT FOR ULTRASONIC TEST PULSES
DE3538948C1 (en) * 1985-11-02 1987-04-23 Deutsche Forsch Luft Raumfahrt Method for digitally measuring the peak value of ultrasonic test pulses
DE3728173A1 (en) * 1987-08-24 1989-03-09 Wellhausen Heinz Logarithmic signal converter
JPH0580034A (en) * 1991-09-19 1993-03-30 Tokimec Inc Ultrasonic flaw detector
DE19926684C2 (en) * 1999-06-11 2003-02-13 Intelligendt Sys & Serv Gmbh Method and device for logarithmic conversion of an input signal

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3685046A (en) * 1970-06-02 1972-08-15 Texaco Inc Seismic playback/monitor system
DE2226172C3 (en) * 1972-05-30 1975-12-04 Thyssen Niederrhein Ag Huetten- Und Walzwerke, 4200 Oberhausen Process for measuring and evaluating ultrasonic test pulses with a selected pulse repetition frequency for the ultrasonic testing of metal sheets and similar test objects using the pulse-echo method
GB1545505A (en) * 1975-09-16 1979-05-10 Ca Minister Nat Defence Excitation and spectral calibration of acoustic emission systems
GB1517533A (en) * 1976-04-01 1978-07-12 Nat Res Dev Stress wave emission analysis systems
DE2623892B2 (en) * 1976-05-28 1980-05-14 Karl Deutsch Pruef- Und Messgeraetebau, 5600 Wuppertal Process for evaluating ultrasonic signals in ultrasonic testing devices for non-destructive testing of materials
GB1534366A (en) * 1976-07-23 1978-12-06 Emi Ltd Signal processing arrangements
US4058001A (en) * 1976-08-02 1977-11-15 G. D. Searle & Co. Ultrasound imaging system with improved scan conversion
FR2366546A1 (en) * 1976-10-01 1978-04-28 Krautkraemer Gmbh Appts. monitoring operation of ultrasonic testing of tubes and bars - senses echo signals by transmitter probe for amplification and application to threshold circuit
US4099416A (en) * 1977-04-25 1978-07-11 Krautkramer-Branson, Incorporated Resolution real-time ultrasonic imaging apparatus
AU517998B2 (en) * 1977-05-06 1981-09-10 Commonwealth Of Australia, The Signal processing system
US4216465A (en) * 1978-03-07 1980-08-05 Hughes Aircraft Company Programmable analog to digital converter

Also Published As

Publication number Publication date
FR2466912A1 (en) 1981-04-10
SE8006758L (en) 1981-03-30
DE2939617A1 (en) 1981-04-16
CA1161542A (en) 1984-01-31
JPS5651660A (en) 1981-05-09
IT1129268B (en) 1986-06-04
BR8006147A (en) 1981-04-07
SE449930B (en) 1987-05-25
DE2939617C2 (en) 1986-02-06
IT8068464A0 (en) 1980-09-22

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Legal Events

Date Code Title Description
ST Notification of lapse