JPS646732A - Temperature measurement method and apparatus for electrical charger - Google Patents
Temperature measurement method and apparatus for electrical chargerInfo
- Publication number
- JPS646732A JPS646732A JP15985587A JP15985587A JPS646732A JP S646732 A JPS646732 A JP S646732A JP 15985587 A JP15985587 A JP 15985587A JP 15985587 A JP15985587 A JP 15985587A JP S646732 A JPS646732 A JP S646732A
- Authority
- JP
- Japan
- Prior art keywords
- light
- detector
- light source
- electrical charger
- 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
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
- Radiation Pyrometers (AREA)
Abstract
PURPOSE:To detect temperature accurately with detection of changes in the quantity of light with a detector after the passage thereof through an optical fiber using a detector, by a method wherein heat of a dielectric is transmitted to an element having a shape memory effect to send light to a photo detector from a light source through the optical fiber to vary the quantity of passing light with a displacement of a transformation temperature of the element in the course of transferring light. CONSTITUTION:A light source 1 and a photo detector 2 are arranged at a position insulated from an electrical charger 3 such as conductor of a bus duct and a specified potential is applied to the electrical charger 3. Light from a light source 1 is transferred to a detector 2 through first and second optical fibers 4 and 5. The fibers 4 and 5 are coupled through a space gap 6 and employ those insulating to receive light of the light source 1 through the fiber 4 and light is inputted into the detector 2 through the fiber 5. Then, as the temperature of the electrically loaded body 3 rises with an overcurrent or the like, it is transmitted to an element 9 from the electrical charger 3 and when the element 9 reaches a transformation temperature, the tip section Q at the point P1 is displaced to force a light shielding plate 8 in the direction A to shut down an optical path of a gap 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15985587A JPS646732A (en) | 1987-06-29 | 1987-06-29 | Temperature measurement method and apparatus for electrical charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15985587A JPS646732A (en) | 1987-06-29 | 1987-06-29 | Temperature measurement method and apparatus for electrical charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS646732A true JPS646732A (en) | 1989-01-11 |
Family
ID=15702702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15985587A Pending JPS646732A (en) | 1987-06-29 | 1987-06-29 | Temperature measurement method and apparatus for electrical charger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS646732A (en) |
-
1987
- 1987-06-29 JP JP15985587A patent/JPS646732A/en active Pending
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