JPS5750620A - Electric noise remover - Google Patents
Electric noise removerInfo
- Publication number
- JPS5750620A JPS5750620A JP12593780A JP12593780A JPS5750620A JP S5750620 A JPS5750620 A JP S5750620A JP 12593780 A JP12593780 A JP 12593780A JP 12593780 A JP12593780 A JP 12593780A JP S5750620 A JPS5750620 A JP S5750620A
- Authority
- JP
- Japan
- Prior art keywords
- electric noise
- comparators
- outputs
- circuit
- output
- 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
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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
PURPOSE:To prevent the emission of a false alarm by removing electric noise by making use of the multichromaticity of the frequency spectra of the acoustic signal by collision sound and the monochromaticity of the electric noise, in a loop parts detector used in a nuclear reactor. CONSTITUTION:The signal from an acceleration detector is amplified, and is inputted to BPFs 4, 6 of which the respective frequency components are 1kHz and 5kHz. The outputs of the BPFs 4, 6 are supplied via detecting circuits 5, 7 for obtaining envelope waveforms to comparators 8, 9 and a divider 10 respectively. The outputs of the comparators 8, 9 are passed to an OR circuit 12, by which the output is obtained in correspondence to either collision sound or electric noise is detected. A comparator 11 discriminates the set range of the output from the divider 10 and provides the output as colliding sound. The outputs of the comparators 11 and the circuit 12 are passed through an AND circuit 13, by which only the signal by the collision sound is detected.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12593780A JPS5750620A (en) | 1980-09-12 | 1980-09-12 | Electric noise remover |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12593780A JPS5750620A (en) | 1980-09-12 | 1980-09-12 | Electric noise remover |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5750620A true JPS5750620A (en) | 1982-03-25 |
Family
ID=14922651
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12593780A Pending JPS5750620A (en) | 1980-09-12 | 1980-09-12 | Electric noise remover |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5750620A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60104208A (en) * | 1983-11-11 | 1985-06-08 | Nippon Atom Ind Group Co Ltd | Shape discriminating method of solid body in flow path |
JPS6131627U (en) * | 1984-07-30 | 1986-02-26 | 日東精工株式会社 | industrial robot |
JPS6341429U (en) * | 1986-09-02 | 1988-03-18 | ||
JPS6376426U (en) * | 1986-11-07 | 1988-05-20 |
-
1980
- 1980-09-12 JP JP12593780A patent/JPS5750620A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60104208A (en) * | 1983-11-11 | 1985-06-08 | Nippon Atom Ind Group Co Ltd | Shape discriminating method of solid body in flow path |
JPH0326766B2 (en) * | 1983-11-11 | 1991-04-11 | Tokyo Shibaura Electric Co | |
JPS6131627U (en) * | 1984-07-30 | 1986-02-26 | 日東精工株式会社 | industrial robot |
JPH0123710Y2 (en) * | 1984-07-30 | 1989-07-20 | ||
JPS6341429U (en) * | 1986-09-02 | 1988-03-18 | ||
JPH0432187Y2 (en) * | 1986-09-02 | 1992-08-03 | ||
JPS6376426U (en) * | 1986-11-07 | 1988-05-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5277920A (en) | Misfire detector | |
MY118284A (en) | Circuit, audio system and method for processing signals,and a harmonics generator. | |
ES450719A1 (en) | Arrangement for recognizing sounds | |
JPS5563758A (en) | Method of discriminating type of golf ball | |
JPS5480160A (en) | Alarm electronic watch | |
EP0318668A3 (en) | Siren detector | |
JPS53129079A (en) | Spectrum change monitoring system | |
JPS5750620A (en) | Electric noise remover | |
GB1495133A (en) | Impact impulse measuring device | |
JPS5522223A (en) | Reproducing device for accompaniment play | |
GB1477667A (en) | Circuit arrangement for producing a pulse sequence corresponding to the foetal cardiac pulses | |
US3600516A (en) | Voicing detection and pitch extraction system | |
JPS5244588A (en) | Disturbance detection system | |
JPS56128242A (en) | Collision warning apparatus | |
JPS5585228A (en) | Musical sound analyzer | |
JPS5510884A (en) | Method of detecting looseness of winding for electric apparatus | |
JPS56135343A (en) | Electronic siren | |
JPS5719690A (en) | Information sound generator for clock | |
JPS55114031A (en) | Detector for pulse absence | |
GB1113225A (en) | Apparatus for distinguishing between voiced and unvoiced sounds in a speech signal | |
JPS5731274A (en) | Detecting circuit of noise band phase | |
JPS5788357A (en) | Detector for gas leakage | |
JPS5560823A (en) | Reverberation time measuring instrument | |
JPS56168521A (en) | Detecting method for damage of planetary gear | |
JPS5747229A (en) | Warning sound generator for automobile |