基于FPGA便携式光谱分析仪设计  

Design of portable spectrum analyzer based on FPGA

作　　者：彭馨仪[1] 张丽娟[2] 

机构地区：[1]长春工业大学应用技术学院,吉林长春130000 [2]长春工业大学计算机科学与工程学院,吉林长春130000

出　　处：《传感器与微系统》2015年第9期58-60,64,共4页Transducer and Microsystem Technologies

基　　金：国家自然科学基金资助项目(60637010)

摘　　要：为了大幅提高光谱检测的抗干扰能力和实时数据处理能力,设计了基于现场可编程门阵列(FPGA)的静态光谱分析系统。选用静态干涉具取代机械扫描,从而提高系统的抗震动能力,使其适用于便携式光谱仪的设计要求。采用FPGA芯片完成干涉数据的高速处理,从而达到实时响应的设计要求。设计了系统的结构、硬件电路以及光谱分析算法,给出了光谱还原的理论推导与计算过程。实验采用Virtex2—pro型FPGA开发板,对660 nm激光光谱进行测试,频谱计算效果与Matlab仿真数据作对比。实验结果显示:本系统可以有效地将被测激光光谱分布函数解出,速度快,准确度高,并具有较好的抗干扰能力,适合于便携式光谱分析仪的应用特点。In order to significantly improve anti-jamming capability and real-time data processing capability for spectrum detection,static spectroscopy system is designed based on FPGA. Static interferometer is chosen to replace the mechanical scanning,so anti-jamming capability of system is improved,to make it suitable for design requirements of portable spectrometer. FPGA chip is used in the system to complete high-speed data processing for interference fringe,so as to achieve design requirements of real-time response. System architecture,hardware circuit,and spectrum analysis algorithm are designed. Theoretical derivation and calculation of the spectrum reduction are given. Experiments use FPGA development board,which is the type of Virtex2—Pro,to test for 660 nm laser spectroscopy. The calculated effect of spectrum is compared with simulation data by Matlab. Experimental results show that the system can effectively solve the spectrum distribution function of measured laser. It＇s the advantages of high anti-jamming ability,the high speed and the high precision in the system. It is suitable for application characteristics of portable spectrum analyzer.

关 键 词：光谱分析仪 便携式设计 抗干扰能力 现场可编程门阵列 

分 类 号：TN247[电子电信—物理电子学]