JPS5722523A - Temperature sensor using optical fiber - Google Patents
Temperature sensor using optical fiberInfo
- Publication number
- JPS5722523A JPS5722523A JP9715680A JP9715680A JPS5722523A JP S5722523 A JPS5722523 A JP S5722523A JP 9715680 A JP9715680 A JP 9715680A JP 9715680 A JP9715680 A JP 9715680A JP S5722523 A JPS5722523 A JP S5722523A
- Authority
- JP
- Japan
- Prior art keywords
- light
- sphere
- fibers
- temperature sensor
- glass sphere
- 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
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/182—Level alarms, e.g. alarms responsive to variables exceeding a threshold
Abstract
PURPOSE:To mismatch a path for light propagation and permit a warning to be issued at the time of a fire, by connecting optical fibers by a glass sphere into which a medium with a high coefficient of thermal expansion is sealed. CONSTITUTION:A liquid with a high coefficient of thermal expansion is closed up tightly in a thermosensitive glass sphere 1, and with expansion of the liquid at a predetermined temperature, the glass sphere is destoryed. The sphere 1 combines optical fibers 3 and 4 that penetrate a box into a body in cooperation with a spring 2. Through fibers 3 and 4, light from a light source 5 is introduced into a light receiving device 6, and the received signal is transmitted to a detector 7. The temperature sensor is set at a desired position, and the sphere 1 is destroyed when fire coccurs followed by disconnection between the fibers 3 and 4, and further transmitted light is interrupted, and a detected output becomes a value under a set value, thereby allowing a warning to be issued.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9715680A JPS5722523A (en) | 1980-07-16 | 1980-07-16 | Temperature sensor using optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9715680A JPS5722523A (en) | 1980-07-16 | 1980-07-16 | Temperature sensor using optical fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5722523A true JPS5722523A (en) | 1982-02-05 |
Family
ID=14184699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9715680A Pending JPS5722523A (en) | 1980-07-16 | 1980-07-16 | Temperature sensor using optical fiber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5722523A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59134213A (en) * | 1983-01-24 | 1984-08-01 | Hideo Nagamitsu | Automatic rising and falling device for rubber falling dam |
| JPS62147332A (en) * | 1985-12-20 | 1987-07-01 | Matsushita Electric Ind Co Ltd | Optical temperature sensor |
| JPH03197816A (en) * | 1989-01-11 | 1991-08-29 | Otto Sensor Corp | Fiber light detector |
| CN115172099A (en) * | 2022-07-18 | 2022-10-11 | 南京氢灵新能源科技有限公司 | Photovoltaic direct current side conflagration automatic disconnection connector |
-
1980
- 1980-07-16 JP JP9715680A patent/JPS5722523A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59134213A (en) * | 1983-01-24 | 1984-08-01 | Hideo Nagamitsu | Automatic rising and falling device for rubber falling dam |
| JPS6231122B2 (en) * | 1983-01-24 | 1987-07-07 | Hideo Nagamitsu | |
| JPS62147332A (en) * | 1985-12-20 | 1987-07-01 | Matsushita Electric Ind Co Ltd | Optical temperature sensor |
| JPH03197816A (en) * | 1989-01-11 | 1991-08-29 | Otto Sensor Corp | Fiber light detector |
| CN115172099A (en) * | 2022-07-18 | 2022-10-11 | 南京氢灵新能源科技有限公司 | Photovoltaic direct current side conflagration automatic disconnection connector |
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