基于FPGA的光纤布拉格光栅解调系统设计  

Design of Fiber Bragg Grating Demodulation System Based on FPGA

作　　者：陶辉 莫金海[1] 赵克 徐学武 潘海波 TAO Hui;MO Jin-hai;ZHAO Ke;XU Xue-wu;PAN Hai-bo(School of Mechanical and Electrical Engineering,Guilin University of Electronic Technology,Guilin 541004,China;Guilin GM Technology Industry Ltd.,Guilin 541004,China)

机构地区：[1]桂林电子科技大学机电工程学院,广西桂林541004 [2]桂林市光明科技实业有限公司,广西桂林541004

出　　处：《仪表技术与传感器》2019年第4期61-64,共4页Instrument Technique and Sensor

基　　金：桂林市科学研究与技术开发计划项目(20170102-1)

摘　　要：设计一种基于FPGA数据采集模块的光纤布拉格光栅解调系统以提高其高速实时性。系统采用VB编程PC控制,首先调控扫描可调谐激光光源,使之在可调谐波长范围内实现快速波长调谐、高精度任意波长点锁定、高稳定度功率输出;再对采集的数据进行解调解读并实现解调过程的可视化显示。试验结果表明,所设计系统具有良好的高速实时性,能够实现传统的基于时域解调的系统无法完成的任务,较好地解决FBG传感器空间定位等问题,可为光纤光栅解调系统在实际应用中的发展和推广提供借鉴。A Fiber Bragg Grating(FBG)demodulation system was designed which used Field Programmable Gate Array(FPGA)as data acquisition module to improve its high-speed and real-time.This system was based on PC control by Visual Basic(VB)programming language.Firstly,the scanning tunable laser light source was adjusted and adjusted to achieve fast wavelength tuning,high precision arbitrary wavelength point locking and high stability power output within the tunable wavelength range.Then the collected data were demodulated and the process of demodulation was visualized.The experimental results show that the designed system has a good high speed real-time performance and can realize the tasks that traditional demodulation based on time domain can t accomplish.The FBG sensor space positioning and other problems were solved.It can provide reference for the development and popularization of FBG demodulation system in practical application.

关 键 词：FPGA 光纤光栅 FBG 解调系统 光纤传感器 可调谐激光光源 

分 类 号：TN274[电子电信—物理电子学] TP212[自动化与计算机技术—检测技术与自动化装置]