JPS5770454A - Distance amplitude compensating circuit - Google Patents

Distance amplitude compensating circuit

Info

Publication number
JPS5770454A
JPS5770454A JP55147060A JP14706080A JPS5770454A JP S5770454 A JPS5770454 A JP S5770454A JP 55147060 A JP55147060 A JP 55147060A JP 14706080 A JP14706080 A JP 14706080A JP S5770454 A JPS5770454 A JP S5770454A
Authority
JP
Japan
Prior art keywords
widths
setting
inputted
counter
height
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
JP55147060A
Other languages
Japanese (ja)
Inventor
Tomio Aoyama
Shigetaka Fukui
Toshio Uchihara
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries 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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP55147060A priority Critical patent/JPS5770454A/en
Publication of JPS5770454A publication Critical patent/JPS5770454A/en
Pending legal-status Critical Current

Links

Classifications

    • 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

Abstract

PURPOSE:To easily adjust characteristics according to flaw detecting directions, distance, materials, etc. by setting the widths segmenting the axis of abscissa of characteristic curves and the heights corresponding to the respective widths respectively. CONSTITUTION:The widths segmenting the axis of abscissa of characteristic curves are set by a width setting digital switch 5, and a counter 6 is inputted with the width signals. Clocks 2, 3 output clock signals having suitable values according to the ultrasonic propagation speeds in the specimen to a counter 6. The heights of the characteristics corresponding respectively to the above-mentioned widths are set respectively by plural height setting digital switches 7. A multiplexer circuit 8 is inputted with the height signals outputted by the switches 7, and are also inputted with the outputs and synchronizing signal of the counter 6 and output to an A/D converter. The width per one of plural rectangular shapes constituting a desired characteristic curve is set with a digital switch 5, and the height is set with the digital switches 7, by which the setting of distances is made possible.
JP55147060A 1980-10-21 1980-10-21 Distance amplitude compensating circuit Pending JPS5770454A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55147060A JPS5770454A (en) 1980-10-21 1980-10-21 Distance amplitude compensating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55147060A JPS5770454A (en) 1980-10-21 1980-10-21 Distance amplitude compensating circuit

Publications (1)

Publication Number Publication Date
JPS5770454A true JPS5770454A (en) 1982-04-30

Family

ID=15421578

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55147060A Pending JPS5770454A (en) 1980-10-21 1980-10-21 Distance amplitude compensating circuit

Country Status (1)

Country Link
JP (1) JPS5770454A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012247416A (en) * 2011-05-26 2012-12-13 General Electric Co <Ge> Ultrasonic scanning using local gain interval
CN103933673A (en) * 2014-03-27 2014-07-23 武汉大学 Method for achieving interlayer distance measurement based on ultrasonic image content

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012247416A (en) * 2011-05-26 2012-12-13 General Electric Co <Ge> Ultrasonic scanning using local gain interval
CN103933673A (en) * 2014-03-27 2014-07-23 武汉大学 Method for achieving interlayer distance measurement based on ultrasonic image content
CN103933673B (en) * 2014-03-27 2017-01-11 武汉大学 Method for achieving interlayer distance measurement based on ultrasonic image content

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