光纤光栅解调系统的设计研究  

Design of Demodulation System for Fiber and Grating

作　　者：王烨 徐东超 王新宇 王成辰 周锋[2] WANG Ye;XU Dongchao;WANG Xinyu;WANG Chengchen;ZHOU Feng(School of Environmental Science and Engineering,Yancheng Institute of Technology,Yancheng,China,224051;School of Information Engineering,Yancheng Institute of Technology,Yancheng,China,224051)

机构地区：[1]盐城工学院环境科学与工程学院,江苏盐城224051 [2]盐城工学院信息工程学院,江苏盐城224051

出　　处：《福建电脑》2020年第3期1-4,共4页Journal of Fujian Computer

基　　金：国家自然科学基金项目(No.61673108);江苏省高等学校自然科学研究重大项目(No.19KJA110002);江苏省高校自然科学研究面上项目(No.18KJD510010,19KJB510061);江苏省自然科学基金项目(No.BK20181050)资助。

摘　　要：本文设计了一种基于FPGA的光纤光栅解调系统,核心模块采用了FPGA芯片,型号为EP2C5Q208C8N,开发环境采用的是Quartus Ⅱ 9.1和Eclipse。通过软硬件相结合的方式,配置了一个NiosⅡ处理器软核,模数转换部分采用12位高精度转换芯片AD9226对采集到的温度信号进行实时转换,用VHDL硬件描述语言配置软核处理器,生成了一个适用于硬件系统的专用C环境,用C代码实现对硬件电路的控制。本文设计的高精度温度测量系统,能使光纤光栅传感器的中心波长随着温度的增加而逐渐增加,其信号波长与温度变化的斜率约为0.02nm/℃。This paper designs a FBG demodulation system based on FPGA. The core module of the system use FPGA chip. The model of the module is ep2c5q208c8n, and the development environment are Quartus Ⅱ 9.1 and eclipse FPGA chips. Through the combination of software configuration and hardware configuration, the system is equipped with a Nios Ⅱ processor soft core, and the 12 bit high-precision conversion chip ad9226 is used to convert the acquired a/D in real time. The system configures the soft core processor with VHDL hardware description language, which generates a special C environment suitable for hardware system and controls the hardware circuit with C code. The experimental results show that the central wavelength of fiber and grating sensors is gradually increasing with the increase of temperature, its signal wavelength and the slope of temperature change is about 0.02 nm/℃.

关 键 词：光纤光栅传感器 FPGA芯片 温度检测 解调系统 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]