高信噪比长波红外探测数据采集系统设计  

Design of High Signal to Noise Ratio Long-wave Infrared Detection Data Acquisition System

作　　者：邢江勇[1] 

机构地区：[1]南京交通职业技术学院电子信息工程学院,南京211188

出　　处：《科技通报》2014年第4期37-39,43,共4页Bulletin of Science and Technology

基　　金：南京交通职业技术学院2013年度科研立项项目(JY1306)

摘　　要：设计了512X10的红外探测器,其中的各部件都采用了低噪声低功耗的设计,尤其是在探测器电源、数模转换器、输入放大匹配电路中都采用了低噪声的电路设计,同时在FPGA中对图像进行滤波以及消噪的算法后,系统的信噪比得到了较大提高,达到了80 dB以上。并研究了系统噪声产生的主要来源以及噪声的测量方法。在实际应用中本系统的高信噪比,可以噪高噪声情况下得到较好的红外图像,在恶劣环境中具有较好的应用价值。The detection sensitivity was higher. Infrared detector 512X10 was designed, in which the components are usedto design low noise and low power consumption, particularly in the detector power, digital-to-analog converter, the amplifi＇cation of the input matching circuit is used in the circuit design of low noise, and filtering the image in FPGA and the algorithm of noising, the signal to noise ratio has been greatly improved, reached above 80dB.Studies the main source of systemnoise and method of measurement noise. In the practical application of this system in the high signal-to-noise ratio, it canget better noise of infrared image with high noise environment, and it has good application value in harsh environments.

关 键 词：长波红外 高信噪比 FPGA 数据采集 

分 类 号：TN79[电子电信—电路与系统]