JPS5764128A - Loose parts monitor - Google Patents
Loose parts monitorInfo
- Publication number
- JPS5764128A JPS5764128A JP55139862A JP13986280A JPS5764128A JP S5764128 A JPS5764128 A JP S5764128A JP 55139862 A JP55139862 A JP 55139862A JP 13986280 A JP13986280 A JP 13986280A JP S5764128 A JPS5764128 A JP S5764128A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- output
- acoustic
- limiter
- divider
- 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
Abstract
PURPOSE:To prevent false detection owing to noise and to detect foreign matter accurately despite the small ground level by detecting the foreign matter of apparatus from the acoustic sensor output level obtained in the output of an amplification factor variable amplifier. CONSTITUTION:The acoustic signal (a) from an acoustic sensor is applied to a divider 10 as its numerator input, and in an average value circuit 20, the average voltage of the signal (a) is detected and is applied as a signal (b) to a limiter 30. The limiter 30 applies an output average value signal (c) to the divider 10 as its denominator input. Hence, the acoustic signal (d) preventing the amplification factor from increasing unlimitedly is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55139862A JPS5764128A (en) | 1980-10-08 | 1980-10-08 | Loose parts monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55139862A JPS5764128A (en) | 1980-10-08 | 1980-10-08 | Loose parts monitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5764128A true JPS5764128A (en) | 1982-04-19 |
| JPS644610B2 JPS644610B2 (en) | 1989-01-26 |
Family
ID=15255267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55139862A Granted JPS5764128A (en) | 1980-10-08 | 1980-10-08 | Loose parts monitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5764128A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6479803A (en) * | 1987-09-22 | 1989-03-24 | Matsushita Electric Ind Co Ltd | Loop gain control device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107544337B (en) * | 2017-09-19 | 2020-10-30 | 中国核动力研究设计院 | Method for intelligently classifying triggering data of loose part monitoring system |
-
1980
- 1980-10-08 JP JP55139862A patent/JPS5764128A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6479803A (en) * | 1987-09-22 | 1989-03-24 | Matsushita Electric Ind Co Ltd | Loop gain control device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS644610B2 (en) | 1989-01-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS55138634A (en) | Fault diagnosis apparatus of apparatus | |
| JPS5653422A (en) | Diagnosis device for bearing abnormality | |
| JPS5764128A (en) | Loose parts monitor | |
| JPS57355A (en) | Injection timing detector | |
| JPS57172218A (en) | Detector for tool defect | |
| JPS5739367A (en) | Video signal normalizing circuit of sonar device | |
| JPS6425026A (en) | Detecting apparatus of leakage of water | |
| JPS6431053A (en) | Car speed detector | |
| JPS5764126A (en) | Oscillation detecting apparatus | |
| JPS57100362A (en) | Ultrasonic wave measuring device | |
| JPS5642412A (en) | Automatic gain control circuit | |
| JPS56126558A (en) | Damage detector for cutting tool | |
| JPS56164927A (en) | Flaw detector of gear | |
| JPS5745428A (en) | Metal contact detector of plain bearing part | |
| JPS5713324A (en) | Abnormal sound monitor for rotary machine | |
| JPS5443670A (en) | Peak voltage position detection system | |
| SU445408A1 (en) | Heart rate monitor | |
| JPS6480842A (en) | X-ray analyzer | |
| JPS55142238A (en) | Abnormality detector | |
| JPS5639426A (en) | Cavitation detection method and its device | |
| JPS5672357A (en) | Failure detector | |
| JPS55119042A (en) | Abnormality alarm for particle counter | |
| FR2405609A1 (en) | Volume control system for public address network - uses detected level of output sound to control amplification of broadcast | |
| JPS5489657A (en) | Rotating angle detector | |
| JPS6445121A (en) | Mark position detector |