JPS5476283A - Ae monitor device - Google Patents

Ae monitor device

Info

Publication number
JPS5476283A
JPS5476283A JP14426077A JP14426077A JPS5476283A JP S5476283 A JPS5476283 A JP S5476283A JP 14426077 A JP14426077 A JP 14426077A JP 14426077 A JP14426077 A JP 14426077A JP S5476283 A JPS5476283 A JP S5476283A
Authority
JP
Japan
Prior art keywords
noise
signal
output
setter
inputted
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
JP14426077A
Other languages
Japanese (ja)
Inventor
Kyoichi Tatsuno
Yasuo Shinomiya
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 JP14426077A priority Critical patent/JPS5476283A/en
Publication of JPS5476283A publication Critical patent/JPS5476283A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To descriminate noise from AE (ultrasonic) signal securely, by counting the frequency of changes of noise or AE signal.
CONSTITUTION: Noise and AE signal transmitted through a structure, which are received by a transducer 1 attached to a structure such as nuclear power plant, are inputted into a discriminiator 4 and an envelope detector 5, and the output of discriminators 4, 6 is inputted into a counter 8 through AND circuit 7. The output of discriminator 6 which delivers output only during generation period of noise or AE signal is counted, and this count value (n) is compared with the set value of setter 10 by a comparator 9. Since the setter 10 sets the ring-down count of electric noise to less than ne and the ring-down count of mechanical noise to more than nm, the AE signal may be discriminated by the relation of ne<n<nm.
COPYRIGHT: (C)1979,JPO&Japio
JP14426077A 1977-11-30 1977-11-30 Ae monitor device Pending JPS5476283A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14426077A JPS5476283A (en) 1977-11-30 1977-11-30 Ae monitor device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14426077A JPS5476283A (en) 1977-11-30 1977-11-30 Ae monitor device

Publications (1)

Publication Number Publication Date
JPS5476283A true JPS5476283A (en) 1979-06-18

Family

ID=15357951

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14426077A Pending JPS5476283A (en) 1977-11-30 1977-11-30 Ae monitor device

Country Status (1)

Country Link
JP (1) JPS5476283A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0419071A (en) * 1990-05-10 1992-01-23 Sintokogio Ltd Shotblast intensity detecting device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0419071A (en) * 1990-05-10 1992-01-23 Sintokogio Ltd Shotblast intensity detecting device

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