JPS5764126A - Oscillation detecting apparatus - Google Patents

Oscillation detecting apparatus

Info

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
Application number
JP55139860A
Other languages
Japanese (ja)
Other versions
JPS646685B2 (en
Inventor
Yuji Hashimoto
Katsumi Kawai
Mitsuo Suzuki
Yoshihiro Michiguchi
Shigeru Ideumi
Kimio Yamada
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.)
CHIYUUBU DENRIYOKU KK
CHIYUUGOKU DENRIYOKU KK
Tokyo Electric Power Co Inc
Chugoku Electric Power Co Inc
Chubu Electric Power Co Inc
Hitachi Ltd
Original Assignee
CHIYUUBU DENRIYOKU KK
CHIYUUGOKU DENRIYOKU KK
Tokyo Electric Power Co Inc
Chugoku Electric Power Co Inc
Chubu Electric Power Co Inc
Hitachi 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 CHIYUUBU DENRIYOKU KK, CHIYUUGOKU DENRIYOKU KK, Tokyo Electric Power Co Inc, Chugoku Electric Power Co Inc, Chubu Electric Power Co Inc, Hitachi Ltd filed Critical CHIYUUBU DENRIYOKU KK
Priority to JP55139860A priority Critical patent/JPS646685B2/ja
Publication of JPS5764126A publication Critical patent/JPS5764126A/en
Publication of JPS646685B2 publication Critical patent/JPS646685B2/ja
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01HMEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H1/00Measuring characteristics of vibrations in solids by using direct conduction to the detector
    • G01H1/04Measuring characteristics of vibrations in solids by using direct conduction to the detector of vibrations which are transverse to direction of propagation
    • G01H1/06Frequency

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.
JP55139860A 1980-10-08 1980-10-08 Expired JPS646685B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55139860A JPS646685B2 (en) 1980-10-08 1980-10-08

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55139860A JPS646685B2 (en) 1980-10-08 1980-10-08

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 Expired JPS646685B2 (en) 1980-10-08 1980-10-08

Country Status (1)

Country Link
JP (1) JPS646685B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
JPS646685B2 (en) 1989-02-06

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