基于PCIE接口的光电图像采集系统设计与实现  

Design and Implementation of Photoelectric Image Acquisition Based on PCIE Interface

作　　者：张东[1] 吴新建[1] 何文波[1] 

机构地区：[1]华中光电技术研究所-武汉光电国家实验室,湖北武汉430223

出　　处：《光学与光电技术》2016年第2期50-53,共4页Optics & Optoelectronic Technology

基　　金：海军“十二五”预研(401010302)资助项目

摘　　要：在光电系统中,为了获得更高质量的光电图像,需增加传感器数量、提高传感器分辨率等,这使得光电图像采集系统采集的数据量剧增。为满足对大量光电图像数据的高速采集及实时显示,提出一种基于PCIE接口的光电图像采集系统,该系统以FPGA作为控制核心,利用专用桥接芯片PEX8311实现PCIE协议,采用模块化设计思想,并预留丰富拓展接口。测试结果表明,单通道采集实时光电图像数据与主机通讯实际速率达到170 MB/s,超出PCI理论带宽132MB/s约30%,能解决传统基于PCI接口的系统数据传输带宽不足等问题。In the electro-optical system,in order to obtain photoelectric image of higher quality,it needs to increase the numbers of sensors and the sensor＇s resolution,which makes the image data electro-optical system acquired become more.For meeting the requirements of high speed data acquisition and real-time display,aphotoelectric image acquisition system based on PCIE interface is proposed.Its control core is an FPGA,and it uses the bridge chip PEX8311 to realize PCIE protocol.By using the method of modular design,it sets aside a rich expansion of interfaces.The test results show that the speed of single channel is up to 170MS/s,which exceeds 30% of PCI＇s theoretical bandwidth.So it can solve the problem of insufficient data transmission bandwidth based on PCI interface.

关 键 词：光电系统 光电图像采集 PCIE接口 实时性 通讯带宽 

分 类 号：TP914.3[自动化与计算机技术]