基于FPGA的CMOS微光成像电子学系统设计  

Design of CMOS low light level imaging electronics system based on FPGA

作　　者：张伟 于磊[1] ZHANG Wei;YU Lei(Optical Engineering Center,Anhui Institute of Optics and Fine Mechanics,HFIPS,Chinese Academy of Sciences,Hefei 230031,China;University of Science and Technology of China,Hefei 230026,China)

机构地区：[1]中国科学院合肥物质科学研究院安徽光学精密机械研究所光学工程中心,安徽合肥230031 [2]中国科学技术大学,安徽合肥230026

出　　处：《大气与环境光学学报》2025年第1期114-122,共9页Journal of Atmospheric and Environmental Optics

基　　金：国家自然科学基金(41504143);中国科学院科研装备研制项目(YJKYYQ20190044);中国科学院青年创新促进会(2016203)。

摘　　要：为满足对微弱荧光辐射探测的高信噪比、高光谱分辨率的探测需求,设计了日光诱导叶绿素荧光高光谱成像仪的成像电子学系统。基于选型互补金属氧化物半导体(CMOS),结合探测的需求,完成了控制模块以及通信协议解码模块的编写,进而完成整体CMOS成像系统的设计。控制部分选择并行数据处理能力强的现场可编程门阵列(FPGA),通信选择速度快、专为相机打造的Camera-Link协议,预期设计信噪比在31dB左右。该成像系统的设计为低噪声和高成像质量的微弱荧光探测系统提供了一个较好的方案。An imaging electronics system for a sunlight-induced chlorophyll fluorescence hyper-spectrometer has been designed to meet the detection requirements of high signal-to-noise ratio and high spectral resolution for weak fluorescence radiation.Based on the selection of complementary metal oxide semiconductor(CMOS),as well as the requirements of detection,the control module and the decoding module of communication protocol are developed,and then the design of CMOS imaging system is completed.The control part selects field programmable gate array(FPGA)with strong parallel data processing ability,and the communication selects Camera-Link protocol with fast communication speed and specially built for camera.The expected signal-to-noise ratio of the designed system is about 31 dB.The design of the imaging system provides a good solution for fluorescence detection system which requires low noise and high imaging quality.

关 键 词：成像光谱仪 低噪声 现场可编程门阵列 微光探测 

分 类 号：O433.1[机械工程—光学工程] TP702[理学—光学]