光纤光栅传感器信号解调方法的研究  

Research in demodulation methods of FBG sensor

作　　者：周倩[1] 宁提纲[1] 

机构地区：[1]北京交通大学光波技术研究所,北京100044

出　　处：《光通信技术》2010年第8期8-11,共4页Optical Communication Technology

基　　金：国家自然科学基金(60771008;60837002)资助;北京市自然科学基金(4082024)资助;留学回国人员基金(教外2008890)资助;教育部博士点基金(20090009110003)资助

摘　　要：分别介绍了几种典型解调方法的工作原理、性能和特点,给出了其工作原理图,并对各种解调方法的优缺点进行了论述。提出了一种基于CCD的光纤光栅传感解调系统,该系统采用反射式成像系统,用CCD作为探测器,并利用可编程逻辑器件FPGA设计驱动电路和信号处理电路,实现了一种体积小、结构简单、解调速度快、可以实时测量的波长解调系统,为光纤光栅解调技术的实际应用和光纤光栅传感解调系统的设计提供了理论依据。This paper analyzed the working principle,performance and characteristics of several typical demodulation methods,the diagrams of working principle are given respectively,and the advantages and disadvantages of various demodulation methods are discussed.A CCD-based fiber grating sensor demodulation system is proposed,it uses reflective imaging system,and uses CCD as a detector,uses of field programmable gate array FPGA to design the drive circuit and signal processing circuit.A wavelength demodulation system which has small size,simple structure,fast demodulation speed,and real-time monitoring capability is realized.These provides theoretical basis for the practical applications of FBG demodulation techniques and the design of FBG demodulation system.

关 键 词：光纤光栅 光纤光栅传感 信号解调 CCD 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]