JPH023933B2 - - Google Patents
Info
- Publication number
- JPH023933B2 JPH023933B2 JP5340285A JP5340285A JPH023933B2 JP H023933 B2 JPH023933 B2 JP H023933B2 JP 5340285 A JP5340285 A JP 5340285A JP 5340285 A JP5340285 A JP 5340285A JP H023933 B2 JPH023933 B2 JP H023933B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- water leakage
- water
- time integral
- 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.)
- Expired
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 92
- 230000010354 integration Effects 0.000 claims description 27
- 238000007493 shaping process Methods 0.000 claims description 17
- 238000001514 detection method Methods 0.000 claims description 15
- 238000005259 measurement Methods 0.000 claims description 10
- 230000001186 cumulative effect Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000003321 amplification Effects 0.000 description 4
- 238000003199 nucleic acid amplification method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/24—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations
- G01M3/243—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations for pipes
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5340285A JPS61213647A (ja) | 1985-03-19 | 1985-03-19 | 漏水検出装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5340285A JPS61213647A (ja) | 1985-03-19 | 1985-03-19 | 漏水検出装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61213647A JPS61213647A (ja) | 1986-09-22 |
| JPH023933B2 true JPH023933B2 (en]) | 1990-01-25 |
Family
ID=12941832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5340285A Granted JPS61213647A (ja) | 1985-03-19 | 1985-03-19 | 漏水検出装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61213647A (en]) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6425025A (en) * | 1987-07-22 | 1989-01-27 | Toshiba Corp | Detecting apparatus of leakage of water |
| JP2006317172A (ja) * | 2005-05-10 | 2006-11-24 | Toshiba Corp | 漏水検出装置 |
| JP2006349572A (ja) * | 2005-06-17 | 2006-12-28 | Toshiba Corp | 漏水判定装置及び方法 |
| JP6325147B1 (ja) * | 2017-04-28 | 2018-05-16 | 日本水道管路株式会社 | 閾値設定方法、漏水監視装置およびプログラム |
-
1985
- 1985-03-19 JP JP5340285A patent/JPS61213647A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61213647A (ja) | 1986-09-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |