基于FPGA的高速图像采集和实时编码传输系统

为实现雨滴、雾滴等大气粒子的非接触测量，设计了一种采用线阵CMOS图像传感器的粒子测量系统。充分利用FPGA的资源丰富、接口灵活、并行计算等特点，结合USB芯片实现稳定可靠的高速数据采集和传输。为了解决线阵图像传感器数据高速采集和实时传输处理问题，基于Xilinx 公司Spantan系列XC3S200为核心实现了高速数据的采集和实时编码处理系统。该系统能够实时采集图像传感器原始数据，同时结合预先设置的阈值也可实时对数据进行阈值比较和编码。根据实际需求可选择输出原始数据或者编码数据，文中分别设计了FIFO和双口RAM用于数据缓冲和比较模块，从而满足系统实时数据采集、传输及处理的需求。整套系统结构简洁、成本低廉，具有较广泛的应用前景。

High-speed Image data acquisition and Data encode compression system based on FPGA

In order to realize untouchable measurement of raindrops and fogdrops,Particle Measurement System which based on linear CMOS image sensor was designed.Features of rich resoures,flexible inferface and parallel computing of FPGA were proposed to this designe ,combined with USB chip a stable and reliable data collection system in high speed has be realized. High-speed data acquisition and data encoding in real-time based on Xilinx''s FPGA XC3S200 is designed in the system can obtain original data of CMOS image sensor,with the threshold pe-setted ,data comparing and encoding in real-time can be realized as well. Original data or encoding data can be exported according to requirement,Dual-ports RAM and FIFO are designed in this article for data compare unit and data buffer unit, so it can meet the demand for high speed data collecting,transfer and Processing.The structure of the system is simple,low cost and has wide application prospect.