JPS5772080A - Device for determining point of fault - Google Patents
Device for determining point of faultInfo
- Publication number
- JPS5772080A JPS5772080A JP14897080A JP14897080A JPS5772080A JP S5772080 A JPS5772080 A JP S5772080A JP 14897080 A JP14897080 A JP 14897080A JP 14897080 A JP14897080 A JP 14897080A JP S5772080 A JPS5772080 A JP S5772080A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- fault point
- compressing
- reflected wave
- waveform
- 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
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Locating Faults (AREA)
Abstract
PURPOSE:To simplify the titled constitution by adding a function for compressing a level ratio of received waveforms in a pulse radar type fault point determining device, reducing the capacity of digital memory, and reducing the number of component elements. CONSTITUTION:The reflected wave containing fault information from the fault point in a transmission line is introduced to a compressing circuit 10 through a terminal 11. The reflected wave whose voltage range is 2,500-12.5V is inputted to said compressing circuit 10, and it is compressed to 14.5-0.6V in a exponential function circuit. After the rectification, the voltage is divided, and the output voltage of 4.0-0.2V is applied to an A/D converter 6. The digital voltage value obtained in said circuit 6 is stored in a digital memory circuit 7. In a digital memory circuit 8, the state of the normal reflected wave is stored. The outputs of the reflected waveforms of said circuit 8 and said circuit 7 are added to a waveform comparator 9, and the faulty waveform and the mornal waveform are compared with each other. The output of the comparison is sent to a range counter 13 as the fault point data, and the range to the fault point is determined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14897080A JPS5772080A (en) | 1980-10-24 | 1980-10-24 | Device for determining point of fault |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14897080A JPS5772080A (en) | 1980-10-24 | 1980-10-24 | Device for determining point of fault |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5772080A true JPS5772080A (en) | 1982-05-06 |
Family
ID=15464736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14897080A Pending JPS5772080A (en) | 1980-10-24 | 1980-10-24 | Device for determining point of fault |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5772080A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62132181A (en) * | 1985-12-04 | 1987-06-15 | Fujitsu Denso Ltd | Memory reading system |
| CN107923971A (en) * | 2015-08-19 | 2018-04-17 | 德克萨斯仪器股份有限公司 | Method and system for compression radar signal |
-
1980
- 1980-10-24 JP JP14897080A patent/JPS5772080A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62132181A (en) * | 1985-12-04 | 1987-06-15 | Fujitsu Denso Ltd | Memory reading system |
| CN107923971A (en) * | 2015-08-19 | 2018-04-17 | 德克萨斯仪器股份有限公司 | Method and system for compression radar signal |
| CN107923971B (en) * | 2015-08-19 | 2022-10-25 | 德克萨斯仪器股份有限公司 | Method and system for compressing radar signals |
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