基于FPGA的高速高精光栅解调器设计  

Design of High Speed and High Precision Grating Demodulator Based on FPGA

作　　者：韩屏[1] 罗婷[2] 

机构地区：[1]武汉理工大学,武汉430070 [2]烽火通信股份有限公司,武汉430073

出　　处：《光电子技术》2009年第4期236-239,共4页Optoelectronic Technology

基　　金：国家自然科学基金资助项目(50775167)

摘　　要：光栅传感器被广泛应用于位移、温度、应力等应变量的测量,光栅解调器测量光栅反射信号的波长位移量的精度决定了光栅传感器测量的准确度。采用嵌入式技术,使用ALTERA公司的高速FPGA器件和Nios-Ⅱ软核设计了高速高精光栅解调器,其测量精度达到1 pm,扫描频率大于2000 Hz。Grating sensors are widespread applied to measure the dependent variable, such as offset, temperature, stress etc. The precision of wavelength displacement of reflected signal measured by grating demodulator can decide the measuring accuracy of grating sensors. The high speed and high precision grating demodulator based on embedded technology is provided, which using FPGA from ALTERA corporate and Nios-II soft kernel. The measuring precision can reach 1 picometer, and swept frequency is higher than 2 000 Hz.

关 键 词：光栅 光栅解调 现场可编程门阵列 NIOS 

分 类 号：TN491[电子电信—微电子学与固体电子学] TN29