基于PCIe总线的红外探测器图像采集系统设计

Design of infrared detector image acquisition system based on PCI Express

文中介绍了一种基于PCI Express(PCIe)总线的高速红外探测器图像采集系统,重点介绍了PCIe图像采集卡和系统的软件设计。PCIe图像采集卡基于FPGA的硬件结构,采用LVDS(Low Voltage Differential Signaling)信号采集高速红外探测器图像数据,通过PLX Technology公司的PEX8311实现PCIe总线2.5 Gb/s高速串行数据的收发。系统的软件设计包括驱动程序和应用程序两部分。经测试与验证,该系统能完成红外探测器图像数据的实时采集、处理及存储,性能稳定可靠。系统适用于高帧频、大数据量的红外探测器图像实时采集。

This paper introduces a high-speed infrared detector image acquisition system based on PCI Express, including the design of the PCIe acquisition board and software of the system.The PCIe acquisition board uses FPGA as the main controller, adopting LVDS to acquire high-speed infrared detector image data. The PLX＇s PEX8311, a PCIe to generic local bus bridge, is equipped with a standard PCIe port providing 2.5Gb/s high-speed transmission rate. The software of this system includes drivers and application program.According to the experiment result,the system can perform real-time acquisition of infrared detector image with high stability and reliability.And the system can be applied to real-time acquisition of infrared image with high flame rate and massive data.