基于USB的高精度红外视频采集系统

Highly Precise Infrared Image Acquisition System Based on USB

为实现红外视频的高精度采集,并保证系统轻小、便携,采用USB传输技术,设计了以FX2系列芯片为USB接口芯片,通过FPGA芯片进行视频数据的采集、解码及编码的视频采集系统。系统将从红外探测器的LVDS接口采集的视频数据通过USB传输至PC机,并由PC机上的应用程序进行视频的处理、保存等操作。详细研究了电路的软硬件部分的设计。最终实验结果表明:系统能够实时采集和显示红外视频,同时保证了采集到的视频数据14b it精度的要求。

To acquire the infrared image high precisely using a portable system,an image acquisition system was designed based on USB technology.This system applied a FPGA to acquire image data,decode and encode it,and then sued a FX2 IC as the USB interface IC.The image data can be acquired from infrared detector＇s LVDS interface,and then transferred to PC via USB,where the data can be processed or save by software.This paper introduced the hardware and software＇s design in detail.The experiment results show that this system can grab or display infrared image in real-time,it satisfies with the requirement of the image data＇s precision is 14bit.