JPS5476283A - Ae monitor device - Google Patents
Ae monitor deviceInfo
- 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
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
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0419071A (en) * | 1990-05-10 | 1992-01-23 | Sintokogio Ltd | Shotblast intensity detecting device |
-
1977
- 1977-11-30 JP JP14426077A patent/JPS5476283A/en active Pending
Cited By (1)
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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