基于千兆以太网的红外热像仪数据传输

摘要

对于某红外线阵探测系统的高速大数据量传输,USB总线或百兆以太网等传输手段在距离和速度上已不能胜任,为此设计了基于FPGA的千兆以太网传输系统并成功应用于某型线阵探测系统中.文中通过对千兆以太网实现技术的深入分析和对线阵探测系统需求的实际考虑,采用简化且合理的方案在FPGA内部逻辑实现全双工MAC,实现了红外线阵探测器图像及上位机控制命令包的双向高速实时传输,且方法简单、性能良好,具有一定优势.%USB bus or fast ethemet can no more meet the distance or speed requirements for the high speed transmission with huge amount of data of a certain IR array detecting system. So the gigabit ethemet transmission system is designed and has been applied to the IR array detecting system successfully. After analyzing the implementation technology of gigabit ethemet deeply and considering the special need of the IR array detecting system, this design uses the simplified and optimized method to implement full-duplex MAC logically in the FPGA,and realizes the duplex,high speed and real-time transmission of the IR array detecter's image and control command packages of PC. And it displays good performance in practical application.