快速傅里叶变换在光纤温度传感器中的应用  

Applications of Fast Fourier Transformation to Fluorescence Fiber Temperature Sensor

作　　者：武金玲[1] 陈嘉兴[1] 

机构地区：[1]河北师范大学职业技术学院,河北石家庄050031

出　　处：《压电与声光》2009年第1期41-43,46,共4页Piezoelectrics & Acoustooptics

基　　金：河北省自然科学基金资助项目(F2008000202);河北师范大学博士基金资助项目(L2007D21);河北师范大学应用开发基金资助项目(L2007K06)

摘　　要：提出的荧光光纤温度测量系统,采用双光路双通道测量方式以及化学镀膜和热处理工艺相结合的微小荧光探头制作技术,在研究了微弱信号的检测和处理技术的基础上,采用快速傅里叶变换(FFT)技术对荧光信号进行消噪处理。结果表明,使用该法检测的荧光信号的信噪与传统消噪方法相比有很大提高,从而使系统具有较高的精度和温度分辨能力。该方法的研究克服了特殊环境及电磁干扰环境温度测量的难题。The fluorescence fiber temperature measurement system proposed in this paper makes use of the tech- nology of the double light paths and double channels measurement as well as the micro fluorescence probe technology in combination with the chemical conversion coating technique and the heat treatment process. The Fast Fourier Transformation（FFT） technique is used to eliminate the noise in the flourescence signal. The results show that the signal to noise（SNR） of the measured fluorescence signal has been improved greatly comparing with the traditional methods, thus the system has higher precision and resolution. This method has resolved the temperature measure- ment difficult problem in special environment and the electromagnetic interference environment.

关 键 词：荧光材料 荧光信号检测 温度测量 快速傅里叶变换(FFT) 

分 类 号：TP212.14[自动化与计算机技术—检测技术与自动化装置]