Share Email Print
cover

Proceedings Paper

Digitial detecting method of electric or magnetic field sensing signal based on light source modulation
Author(s): Weidong Zhang; Xiangqun Cui; Ruoya Yao
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

The advantage and disadvantage of the conventional detecting methods of electric or magnetic field sensing signal in the fiber optical sensing system are discussed. A new digital detecting method of electric or magnetic field sensing signal based on the optical modulation and electrical demodulation is proposed in order to eliminate the power frequency and low frequency noises. The digital detecting circuit is designed and the detecting software is developed. In design of the circuit, because the closed-loop synchronous sampling technique is used, not only the leakage effect is controlled and the detecting accuracy is increased, but also the signal processing is simplified, so it has better real-time characteristics. The experiments show that the test results detected by this method have good linearity.

Paper Details

Date Published: 24 September 1996
PDF: 8 pages
Proc. SPIE 2895, Fiber Optic Sensors V, (24 September 1996); doi: 10.1117/12.252206
Show Author Affiliations
Weidong Zhang, North China Electric Power Univ. (China)
Xiangqun Cui, North China Electric Power Univ. (China)
Ruoya Yao, Beijing Electric Power College (China)


Published in SPIE Proceedings Vol. 2895:
Fiber Optic Sensors V
Kim D. Bennett; Byoung Yoon Kim; Yanbiao Liao, Editor(s)

© SPIE. Terms of Use
Back to Top