JPH0723702Y2 - 光ファイバを用いた水位検知装置 - Google Patents
光ファイバを用いた水位検知装置Info
- Publication number
- JPH0723702Y2 JPH0723702Y2 JP8056790U JP8056790U JPH0723702Y2 JP H0723702 Y2 JPH0723702 Y2 JP H0723702Y2 JP 8056790 U JP8056790 U JP 8056790U JP 8056790 U JP8056790 U JP 8056790U JP H0723702 Y2 JPH0723702 Y2 JP H0723702Y2
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- temperature distribution
- water
- water level
- heating element
- 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 - Fee Related
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 57
- 239000013307 optical fiber Substances 0.000 title claims description 42
- 238000010438 heat treatment Methods 0.000 claims description 25
- 239000002131 composite material Substances 0.000 claims description 24
- 238000000253 optical time-domain reflectometry Methods 0.000 claims description 8
- 238000005259 measurement Methods 0.000 description 17
- 238000001514 detection method Methods 0.000 description 6
- 125000006850 spacer group Chemical group 0.000 description 4
- 238000004804 winding Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000011295 pitch Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8056790U JPH0723702Y2 (ja) | 1990-07-31 | 1990-07-31 | 光ファイバを用いた水位検知装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8056790U JPH0723702Y2 (ja) | 1990-07-31 | 1990-07-31 | 光ファイバを用いた水位検知装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0438526U JPH0438526U (en]) | 1992-03-31 |
| JPH0723702Y2 true JPH0723702Y2 (ja) | 1995-05-31 |
Family
ID=31625747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8056790U Expired - Fee Related JPH0723702Y2 (ja) | 1990-07-31 | 1990-07-31 | 光ファイバを用いた水位検知装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0723702Y2 (en]) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11304739A (ja) * | 1998-04-16 | 1999-11-05 | Kasen Joho Center | 湿潤度分布測定方法 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114295177B (zh) * | 2021-12-31 | 2024-08-30 | 北京景通科信科技有限公司 | 一种基于分布式光纤的井巷水位探测方法 |
-
1990
- 1990-07-31 JP JP8056790U patent/JPH0723702Y2/ja not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11304739A (ja) * | 1998-04-16 | 1999-11-05 | Kasen Joho Center | 湿潤度分布測定方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0438526U (en]) | 1992-03-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |