JPS5637567A - Noise rejection system in corona detection apparatus - Google Patents
Noise rejection system in corona detection apparatusInfo
- Publication number
- JPS5637567A JPS5637567A JP11397779A JP11397779A JPS5637567A JP S5637567 A JPS5637567 A JP S5637567A JP 11397779 A JP11397779 A JP 11397779A JP 11397779 A JP11397779 A JP 11397779A JP S5637567 A JPS5637567 A JP S5637567A
- Authority
- JP
- Japan
- Prior art keywords
- peak
- signal
- output
- polarity
- noise
- 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
Landscapes
- Testing Relating To Insulation (AREA)
Abstract
PURPOSE: To increase the effect of noise reduction, by digitizing the 1st and the 2nd pulse through peak detection, and performing the discrimination of signal and noise taking consideration into the combination of the polarity given to the digital signal.
CONSTITUTION: The 1st and 2nd analog pulses are introduced as the input of the 1st peak detector 6 and the 2nd peak detector 7 respectively from the analog pulse the 1st and 2nd signal lines L1, L2 of the sensor 3. If the polarity of peak of the 1st and 2nd analog pulses is positive, the 1st and 2nd peak detectors 6, 7 output the 1st and 2nd digital pulse outputs +PD1, +PD2, and if the peak polarity is negative, the digital pulse outputs -PD1, -PD2 are outputted, being introduced to the signal 1 noise discrimination logic circuit 8 at the next stage. The logic circuit 8 receives the combination of the output +PD1 and -PD2 or output PD1 and +PD2 as tube signals.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11397779A JPS5637567A (en) | 1979-09-05 | 1979-09-05 | Noise rejection system in corona detection apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11397779A JPS5637567A (en) | 1979-09-05 | 1979-09-05 | Noise rejection system in corona detection apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5637567A true JPS5637567A (en) | 1981-04-11 |
JPS6229033B2 JPS6229033B2 (en) | 1987-06-24 |
Family
ID=14625948
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11397779A Granted JPS5637567A (en) | 1979-09-05 | 1979-09-05 | Noise rejection system in corona detection apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5637567A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57189074A (en) * | 1981-05-18 | 1982-11-20 | Showa Electric Wire & Cable Co Ltd | Corona measuring method for power cable |
-
1979
- 1979-09-05 JP JP11397779A patent/JPS5637567A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57189074A (en) * | 1981-05-18 | 1982-11-20 | Showa Electric Wire & Cable Co Ltd | Corona measuring method for power cable |
JPH0353583B2 (en) * | 1981-05-18 | 1991-08-15 | Showa Electric Wire & Cable Co |
Also Published As
Publication number | Publication date |
---|---|
JPS6229033B2 (en) | 1987-06-24 |
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