A Photonic Transducer-Based Optical Current Sensor Using Back-Propagation Neural Network

作者：Wei, Pu^*; Cheng, Cheng^*; Liu, Tingting^*

来源：IEEE Photonics Technology Letters, 2016, 28(14): 1513-1516.

DOI：10.1109/LPT.2016.2557339

• Current measurement
• fiber optic sensor
• fiber Bragg grating
• neural network

We introduce and experimentally demonstrate a novel optical current sensor using a coil combined with an optical transducer for metering and protective relaying application. The transducer modulates the intensity of the lightwave corresponding to the coil output. A back-propagation neural network is designed for the nonlinearity compensation of the sensor at different temperature. In addition, the impact of the optical power drift has been eliminated by an optical-pumped biased dc voltage signal. The result shows that the sensor errors are within the range of 0.17% when increasing the current from 100 to 600 A. And a maximum error of 0.18% is recorded over -20 degrees C to 70 degrees C range.

• 出版日期2016-7-15
• 单位南京工程学院