Decoupling of Vibration and Temperature Signals of Fiber Bragg Grating Sensor

被引：0
|
作者：
Li H. [1 ]
Zhang B. [1 ]
Wang J. [1 ]
Sun Y. [1 ]
Gong S. [1 ]
机构：
[1] School of Nuclear Science and Engineering, Shanghai Jiao Tong University, Shanghai
来源：
Shanghai Jiaotong Daxue Xuebao/Journal of Shanghai Jiaotong University | 2022年 / 56卷 / 02期
关键词：
Fiber bragg grating (FBG) sensor; Nuclear power plant signal monitoring; Signal decoupling;
D O I：
10.16183/j.cnki.jsjtu.2020.313
中图分类号：
学科分类号：
摘要：
This paper uses a single fiber bragg grating (FBG) sensor to implement an experiment to measure vibration and temperature signals at the same time, and proposes a MATLAB-based decoupling method to separate vibration and temperature signals. The experimental results show that under the condition of single signal measurement, the static temperature measurement error of the FBG sensor is within ±0.4 ℃ and the relative error of the dynamic measurement of the main frequency of vibration is 0.5%. The FBG sensor measures the composite signal of vibration and temperature. The relative error of the main vibration frequency obtained by the decoupling method proposed in this experiment is 0.65%, the relative error of the vibration amplitude is 7.14%, and the temperature signal error is within ±3.3 ℃. © 2022, Editorial Board of Journal of Shanghai Jiao Tong University. All right reserved.
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页码：214 / 222
页数：8
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