Acta Optica Sinica, Volume. 39, Issue 9, 0906008(2019)
Wirelessly Coupled Fiber-Bragg-Grating Sensor for Bushing-Temperature Monitoring
The abrasion of a crosshead bushing is one of the important reasons for the failure of the compressor under normal circumstances. To ensure the safe and efficient operation of the compressor, it is necessary to monitor the temperature of the bushing in real time to determine the abrasion. For complex working conditions in petrochemical industry, a wirelessly coupled fiber-Bragg-grating (FBG) sensor is proposed and designed to wirelessly transmit optical signals, thereby realizing the extraction of bushing’s temperature signals. However, in order to solve the problem of excessive demodulation temperature difference caused by the U-type signal at the center wavelength generated during a dynamic operation, the insertion-loss threshold is used to reduce the temperature change from 4 ℃ to less than 0.1 ℃. This improves the accuracy of temperature demodulation and realizes the wireless monitoring of temperature.
Get Citation
Copy Citation Text
Wei He, Cui Zhang, Xinglin Tong, Chengwei Deng, Fang Liu, Yuan Tao, Yan Mao. Wirelessly Coupled Fiber-Bragg-Grating Sensor for Bushing-Temperature Monitoring[J]. Acta Optica Sinica, 2019, 39(9): 0906008
Category: Fiber Optics and Optical Communications
Received: Apr. 16, 2019
Accepted: May. 27, 2019
Published Online: Sep. 9, 2019
The Author Email: Tong Xinglin (tongxinglin@whut.edu.cn)