光纤光栅传感信号中的噪声去除研究  

Research on noise removal in FBG sensing signal

作　　者：周晓波[1] ZHOU Xiaobo(Xijing University, Xi＇an 710123, Chin)

机构地区：[1]西京学院

出　　处：《激光杂志》2018年第5期176-178,共3页Laser Journal

基　　金：西京学院科研基金项目(No.XJ140236、No.XJ160230)

摘　　要：信号处理是光纤光栅传感中的关键技术之一，噪声对光纤光栅传感测量精度产生干扰，影响光纤光栅传感的实际应用效果，为了解决当前光纤光栅传感信号的噪声问题，设计了基于轮廓波变换的光纤光栅传感信号去噪方法。首先采集光纤光栅传感信号，并去除其中的无用信号，选择有用信号段，然后采用轮廓波进行变换处理，通过滤波器过滤其中的噪声，最后通过具体实验对去噪效果进行测试。结果明，改进轮廓波变换能够完全去除光纤光栅传感信号，提高了光纤光栅传感通信质量，验证了本文方法的有效性。Signal processing is one of the key technologies of FBG sensing. The noise will disturb FBG sensing measurement precision and influence its actual application performance. To cdve the noise problem, the noise removal in FBG sensing signal based on contourlet transform method is proposed. First, acquire FBG sensing signal and eliminate the useless signal. Then, transform the useful signal by contourlet and filter the noise. Finally, carry out the effect test. The results show that the improved contourlet can completely remove the FBG signal and improve the communication quality, which verifies the feasibility of this method.

关 键 词：光纤光栅 传感信号 噪声干扰 轮廓波变换 滤波器 

分 类 号：TN212[电子电信—物理电子学]