JPS5622923A - Detection system for liquid leakage - Google Patents
Detection system for liquid leakageInfo
- Publication number
- JPS5622923A JPS5622923A JP9915079A JP9915079A JPS5622923A JP S5622923 A JPS5622923 A JP S5622923A JP 9915079 A JP9915079 A JP 9915079A JP 9915079 A JP9915079 A JP 9915079A JP S5622923 A JPS5622923 A JP S5622923A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- leakage
- cable
- command
- pulse
- 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
- Examining Or Testing Airtightness (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
PURPOSE: To find a leakage section accurately by a liquid leakage detection system on the TDR system by considering a leakage detection cable to be composed of connected small sections, by observing sampled values of incident and reflected pulses, and then by finding leakage width through the fixed arithmetic processing of sampled values.
CONSTITUTION: Under the command of central controller 12 of the microprocessor, arithmetic controller 8 sends out a pulsating voltage from timing generator 7 and while pulse generator 4 is supplied with the pulse generation command, AD converter 6 is also supplied with the command for sampling at constant intervals of time. Once the pulse voltage is applied to cable 1 from pulse generator 4, the applied voltage and reflected voltage are detected by receiving amplifier 5 and AD converter 6 samples the signal to send a digital signal to arithmetic controller 8. Through arithmetic processing, the leakage width is accurately calculated from reflection coefficients at respective connection points, when cable 1 is considered to be made up of small sections, the maximum and minimum positions as to the reflection coefficient and the phase speed in the section between the both.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54099150A JPS5856822B2 (en) | 1979-08-02 | 1979-08-02 | Fluid leak detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54099150A JPS5856822B2 (en) | 1979-08-02 | 1979-08-02 | Fluid leak detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5622923A true JPS5622923A (en) | 1981-03-04 |
| JPS5856822B2 JPS5856822B2 (en) | 1983-12-16 |
Family
ID=14239652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54099150A Expired JPS5856822B2 (en) | 1979-08-02 | 1979-08-02 | Fluid leak detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5856822B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4797621A (en) * | 1987-07-08 | 1989-01-10 | Midwesco, Inc. | Leak detector and locator utilizing time domain reflectometry and sampling techniques |
| KR20030088259A (en) * | 2002-05-14 | 2003-11-19 | (주)와콘 | System and method of detecting water leakage for liquid pipe |
| JP2017102900A (en) * | 2015-11-30 | 2017-06-08 | 華為技術有限公司Ｈｕａｗｅｉ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏ．，Ｌｔｄ． | Power-over-ethernet method and device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0519323U (en) * | 1991-08-21 | 1993-03-09 | 重三郎 飯島 | Hermet with awning |
-
1979
- 1979-08-02 JP JP54099150A patent/JPS5856822B2/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4797621A (en) * | 1987-07-08 | 1989-01-10 | Midwesco, Inc. | Leak detector and locator utilizing time domain reflectometry and sampling techniques |
| KR20030088259A (en) * | 2002-05-14 | 2003-11-19 | (주)와콘 | System and method of detecting water leakage for liquid pipe |
| JP2017102900A (en) * | 2015-11-30 | 2017-06-08 | 華為技術有限公司Ｈｕａｗｅｉ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏ．，Ｌｔｄ． | Power-over-ethernet method and device |
| US10075302B2 (en) | 2015-11-30 | 2018-09-11 | Huawei Technologies Co., Ltd. | Power over ethernet method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5856822B2 (en) | 1983-12-16 |
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