JPS5660343A - Ae monitor device - Google Patents

Ae monitor device

Info

Publication number
JPS5660343A
JPS5660343A JP13624779A JP13624779A JPS5660343A JP S5660343 A JPS5660343 A JP S5660343A JP 13624779 A JP13624779 A JP 13624779A JP 13624779 A JP13624779 A JP 13624779A JP S5660343 A JPS5660343 A JP S5660343A
Authority
JP
Japan
Prior art keywords
signals
orientation
time difference
wave generation
generation position
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
JP13624779A
Other languages
Japanese (ja)
Inventor
Kyoichi Tatsuno
Hirokazu Sato
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP13624779A priority Critical patent/JPS5660343A/en
Publication of JPS5660343A publication Critical patent/JPS5660343A/en
Pending legal-status Critical Current

Links

Landscapes

  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

PURPOSE: To prevent oversight of defects of a material to be checked and erroneous position orientation, by measuring the time difference between AE wave signals discriminated in the same level.
CONSTITUTION: Respective receiving signals dependent upon AE sensors 1 and 2 become binary signals P1WP5 and Q1WQ5 in the event pulse generating circuit and are led to time difference measuring circuits 5aW5e and become pulse signals R1W R4 corresponding to times T1WT4 of both signals, and the clock signal is counted during respective pulse width to measure time differences T1WT4 and, position orientation operating circuit 8 orientates the AE wave generation position on a basis of values of these time differences. Next, distribution cumulative counter 9 extracts only the maximum point of distribution of the orientated position, namely, the AE wave generation position orientation signal measured on a basis of time difference T1 (T1=T3=T4). Consequently, the normal AE wave generation position is displayed on display 10, and orientation of erroneous positions is prevented.
COPYRIGHT: (C)1981,JPO&Japio
JP13624779A 1979-10-22 1979-10-22 Ae monitor device Pending JPS5660343A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13624779A JPS5660343A (en) 1979-10-22 1979-10-22 Ae monitor device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13624779A JPS5660343A (en) 1979-10-22 1979-10-22 Ae monitor device

Publications (1)

Publication Number Publication Date
JPS5660343A true JPS5660343A (en) 1981-05-25

Family

ID=15170720

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13624779A Pending JPS5660343A (en) 1979-10-22 1979-10-22 Ae monitor device

Country Status (1)

Country Link
JP (1) JPS5660343A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0630790U (en) * 1993-07-22 1994-04-22 株式会社クボタ Distance measuring device for reaper

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0630790U (en) * 1993-07-22 1994-04-22 株式会社クボタ Distance measuring device for reaper

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