JPS5764126A - Oscillation detecting apparatus - Google Patents
Oscillation detecting apparatusInfo
- Publication number
- JPS5764126A JPS5764126A JP55139860A JP13986080A JPS5764126A JP S5764126 A JPS5764126 A JP S5764126A JP 55139860 A JP55139860 A JP 55139860A JP 13986080 A JP13986080 A JP 13986080A JP S5764126 A JPS5764126 A JP S5764126A
- Authority
- JP
- Japan
- Prior art keywords
- sound
- oscillation
- noise
- signal
- average
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H1/00—Measuring characteristics of vibrations in solids by using direct conduction to the detector
- G01H1/04—Measuring characteristics of vibrations in solids by using direct conduction to the detector of vibrations which are transverse to direction of propagation
- G01H1/06—Frequency
Abstract
PURPOSE:To surely detect oscillations even when noise is large, by obtaining average frequencies of a sound detecting signal at an in-furance structure, etc., and detecting oscillations from the average frequencies. CONSTITUTION:A sound detector 1 detects a sound signal, generated by mutual friction or collision due to the oscillation of an in-furnace structure, and also a noise signal. These detected signals are supplied to an operator 7 through a BPF6 after they are amplified 5, and an average frequency of the sound signals is obtained, then ,the output is analized in frequency. Consequently, a peak valve of the sound signal generated by oscillation of the structure is clearly distinguished in the variation of an average frequency of the noise. When the size and location of the peak valve are compared with a set value, abnormal oscillation of in-furnace structure can be detected.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55139860A JPS5764126A (en) | 1980-10-08 | 1980-10-08 | Oscillation detecting apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55139860A JPS5764126A (en) | 1980-10-08 | 1980-10-08 | Oscillation detecting apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5764126A true JPS5764126A (en) | 1982-04-19 |
JPS646685B2 JPS646685B2 (en) | 1989-02-06 |
Family
ID=15255218
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55139860A Granted JPS5764126A (en) | 1980-10-08 | 1980-10-08 | Oscillation detecting apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5764126A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59102126A (en) * | 1982-12-06 | 1984-06-13 | Babcock Hitachi Kk | Loose parts monitoring device |
JP2003066015A (en) * | 2001-08-21 | 2003-03-05 | Ishikawajima Harima Heavy Ind Co Ltd | Signal processing method in acoustic emission method |
JP2010243254A (en) * | 2009-04-02 | 2010-10-28 | Toshiba Corp | Method and system for monitoring oscillation of nuclear reactor |
JP2017090428A (en) * | 2015-11-02 | 2017-05-25 | 株式会社アイティマジック | Method and diagnostic system for extracting diagnostic signal with sound signal |
-
1980
- 1980-10-08 JP JP55139860A patent/JPS5764126A/en active Granted
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59102126A (en) * | 1982-12-06 | 1984-06-13 | Babcock Hitachi Kk | Loose parts monitoring device |
JP2003066015A (en) * | 2001-08-21 | 2003-03-05 | Ishikawajima Harima Heavy Ind Co Ltd | Signal processing method in acoustic emission method |
JP2010243254A (en) * | 2009-04-02 | 2010-10-28 | Toshiba Corp | Method and system for monitoring oscillation of nuclear reactor |
JP2017090428A (en) * | 2015-11-02 | 2017-05-25 | 株式会社アイティマジック | Method and diagnostic system for extracting diagnostic signal with sound signal |
Also Published As
Publication number | Publication date |
---|---|
JPS646685B2 (en) | 1989-02-06 |
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