JPS6426168A - Optical fiber applied sensor device - Google Patents
Optical fiber applied sensor deviceInfo
- Publication number
- JPS6426168A JPS6426168A JP62182511A JP18251187A JPS6426168A JP S6426168 A JPS6426168 A JP S6426168A JP 62182511 A JP62182511 A JP 62182511A JP 18251187 A JP18251187 A JP 18251187A JP S6426168 A JPS6426168 A JP S6426168A
- Authority
- JP
- Japan
- Prior art keywords
- optical
- temperature
- photoabsorption
- sensor device
- magneto
- 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 Magnetic Variables (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
PURPOSE:To obtain a sensor device having high reliability at a low cost by measuring a photoabsorption from a DC component of a modulated light, at the time of measuring an AC current by utilizing a magneto-optical effect, and executing a temperature correction of the magneto-optical effect by a temperature change of the photoabsorption. CONSTITUTION:An optical system of an optical applied sensor device is constituted of a light source 101, optical fibers 102, 106, a polarizer 103, a magneto- optical crystal 104, an analyzer 105, and a photodetecting part 107. Also, A/D converters 108, 109 are connected to a CPU 122, and the optical intensity of a light source and the optical intensity of a modulated light are inputted to the CPU 122. Subsequently, a photoabsorption is calculated from a DC component from a value obtained by the A/D converter 108, and a temperature T0 of a sensor part is determined by a photoabsorption loss and a temperature dependent data of sensitivity stored in a ROM 120 and 121. Next, from a value of this temperature T0, a temperature change of the sensitivity is corrected, and the quantity to be measured, related to an AC component of the modulated light can be measured exactly.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62182511A JPS6426168A (en) | 1987-07-22 | 1987-07-22 | Optical fiber applied sensor device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62182511A JPS6426168A (en) | 1987-07-22 | 1987-07-22 | Optical fiber applied sensor device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6426168A true JPS6426168A (en) | 1989-01-27 |
Family
ID=16119577
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62182511A Pending JPS6426168A (en) | 1987-07-22 | 1987-07-22 | Optical fiber applied sensor device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6426168A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0410234A2 (en) * | 1989-07-22 | 1991-01-30 | Asea Brown Boveri Aktiengesellschaft | Method and apparatus for measuring an electric field or an electric voltage |
US5450006A (en) * | 1991-03-07 | 1995-09-12 | British Technology Group Limited | Apparatus and methods for measuring magnetic fields and electric currents |
JP2014092445A (en) * | 2012-11-02 | 2014-05-19 | Seiko Epson Corp | Magnetic field measuring apparatus and magnetic field measuring method |
-
1987
- 1987-07-22 JP JP62182511A patent/JPS6426168A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0410234A2 (en) * | 1989-07-22 | 1991-01-30 | Asea Brown Boveri Aktiengesellschaft | Method and apparatus for measuring an electric field or an electric voltage |
US5450006A (en) * | 1991-03-07 | 1995-09-12 | British Technology Group Limited | Apparatus and methods for measuring magnetic fields and electric currents |
JP2014092445A (en) * | 2012-11-02 | 2014-05-19 | Seiko Epson Corp | Magnetic field measuring apparatus and magnetic field measuring method |
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