JPS62141734U - - Google Patents
Info
- Publication number
- JPS62141734U JPS62141734U JP2912286U JP2912286U JPS62141734U JP S62141734 U JPS62141734 U JP S62141734U JP 2912286 U JP2912286 U JP 2912286U JP 2912286 U JP2912286 U JP 2912286U JP S62141734 U JPS62141734 U JP S62141734U
- Authority
- JP
- Japan
- Prior art keywords
- temperature sensor
- optical
- coating
- fiber core
- optical fiber
- 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
- 230000003287 optical effect Effects 0.000 claims description 11
- 239000011248 coating agent Substances 0.000 claims description 10
- 238000000576 coating method Methods 0.000 claims description 10
- 239000000835 fiber Substances 0.000 claims description 7
- 239000013307 optical fiber Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 description 4
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
Description
第１図は本考案の光温度センサを用いた実施例
のケーブル内温度分布測定系の縦断面図、第２図
は本考案の光温度センサの第１の実施例の縦断面
図、第３図は本考案の光温度センサの第１の実施
例を用いた場合の光損失の温度特性を示した図、
第４図は本考案の光温度センサの第２の実施例の
縦断面図、第５図は本考案の光温度センサの第３
の実施例の縦断面図、第６図は本考案の光温度セ
ンサの第４の実施例の縦断面図、第７図は従来の
熱電対を用いたケーブル内の温度分布測定系の縦
断面図である。
１……ケーブル外被、２……熱電対、２Ａ……
熱電対センサ部、２Ｂ……熱電対リード線、３…
…測定端、４……測定点、５……光温度センサ、
５Ａ……センサ部、５Ｂ……光フアイバ心線、５
Ａ１……被覆くぼみ変形を有するセンサ部、５Ａ
２……フアイバ被覆６と線膨張係数の異なる被覆
材からなるセンサ部、５Ａ３……フアイバ被覆６
と線膨張係数の異なる被覆材が外周に塗布された
センサ部、５Ａ４……フアイバ被覆６内に温度伸
縮層を有するセンサ部、６……フアイバ被覆、７
……緩衝層、８……フアイバ、９……温度伸縮層
。
FIG. 1 is a longitudinal cross-sectional view of a temperature distribution measurement system in a cable according to an embodiment using the optical temperature sensor of the present invention, FIG. 2 is a longitudinal cross-sectional view of the first embodiment of the optical temperature sensor of the present invention, and FIG. The figure shows the temperature characteristics of optical loss when using the first embodiment of the optical temperature sensor of the present invention.
FIG. 4 is a longitudinal sectional view of the second embodiment of the optical temperature sensor of the present invention, and FIG. 5 is a longitudinal sectional view of the third embodiment of the optical temperature sensor of the present invention.
6 is a longitudinal sectional view of the fourth embodiment of the optical temperature sensor of the present invention, and FIG. 7 is a longitudinal sectional view of a temperature distribution measurement system in a cable using a conventional thermocouple. It is a diagram. 1... Cable jacket, 2... Thermocouple, 2A...
Thermocouple sensor part, 2B...Thermocouple lead wire, 3...
...Measurement end, 4...Measurement point, 5...Light temperature sensor,
5A...Sensor part, 5B...Optical fiber core wire, 5
A1...Sensor part with cover depression deformation, 5A
2...Sensor part made of a coating material having a different coefficient of linear expansion from the fiber coating 6, 5A3...Fiber coating 6
A sensor part whose outer periphery is coated with a coating material having a different coefficient of linear expansion, 5A4...Sensor part having a temperature expansion/contraction layer in the fiber coating 6, 6...Fiber coating, 7
...Buffer layer, 8...Fiber, 9...Temperature expansion layer.
Claims (1)
によつて光フアイバ心線のフアイバに局所的な応
力集中による光損失変化を生じせしめるよう構成
して温度センサ部とし、該温度センサ部を前記光
フアイバ心線の長手方向上に少なくとも１個以上
設けたことを特徴とする光温度センサ。 (2) 前記温度センサ部が前記被覆の厚さに段差
を設けて構成されていることを特徴とする実用新
案登録請求の範囲第１項記載の光温度センサ。 (3) 前記温度センサ部が前記被覆と熱膨張係数
の異なる材料で前記フアイバを被覆して構成され
ていることを特徴とする実用新案登録請求の範囲
第１項記載の光温度センサ。[Claims for Utility Model Registration] (1) A part of the coating of the optical fiber core is configured to cause a change in optical loss due to local stress concentration in the fiber of the optical fiber core due to temperature change. An optical temperature sensor, characterized in that the temperature sensor section is provided at least one temperature sensor section along the longitudinal direction of the optical fiber core. (2) The optical temperature sensor according to claim 1, wherein the temperature sensor section is configured by providing a step in the thickness of the coating. (3) The optical temperature sensor according to claim 1, wherein the temperature sensor portion is constructed by coating the fiber with a material having a different thermal expansion coefficient from that of the coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2912286U JPS62141734U (en) | 1986-03-03 | 1986-03-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2912286U JPS62141734U (en) | 1986-03-03 | 1986-03-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62141734U true JPS62141734U (en) | 1987-09-07 |
Family
ID=30832722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2912286U Pending JPS62141734U (en) | 1986-03-03 | 1986-03-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62141734U (en) |
-
1986
- 1986-03-03 JP JP2912286U patent/JPS62141734U/ja active Pending
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