基于WPM的高精度光纤Bragg温度传感系统研究与设计  

Research and Design of High Precision Fiber Bragg Grating Temperature Sensor System Based on WPM

作　　者：康彦深[1] 王友波[2] 张栋[1] 隋青美[1] 蒋奇[1] 

机构地区：[1]山东大学控制科学与工程学院,山东济南250061 [2]南京航空航天大学航天学院,江苏南京210016

出　　处：《仪表技术与传感器》2010年第6期12-14,共3页Instrument Technique and Sensor

摘　　要：根据边缘滤波器的Bragg光栅温度解调原理,利用DSP2407作为处理芯片,设计完成了光电转换和信号调理电路,构建并实验研究了低成本温度传感检测解调系统。解调系统采用双光路结构,并提出了一种对称双通道信号数据融合方案,从理论与技术上做到消除由于激光光源和光路造成光强波动带来的测量漂移问题。引入数字温度计与设计光纤光栅温度系统,利用恒温水槽进行了对比实验。实验数据表明:在环境温度对光源以及对整个系统的影响下,系统温度测量仍具有良好的稳定性与精度。Through analyzing the theory of fiber bragg grating temperature demodulation system based on tilt filter,a novel temperature sensor demodulation system was built and experimentally studied.DSP2407 was used as a processing chip and the circuit of photoelectric conversion and signal conditioning was also designed.Demodulation system used pairs of optical path and presents a scheme of symmetrical dual-channel signal data integration.This method can eliminate fluctuations of the measurement caused by laser light source and optical.This system used digital thermometer contrast the design of fiber Bragg grating temperature exploit the water tank.Experimental data show that the system temperature measurement has good characteristics of stability and precision at an ambient temperature changed.

关 键 词：光纤传感 光纤光栅 边缘滤波 温度 

分 类 号：TP212.11[自动化与计算机技术—检测技术与自动化装置]