基于FPGA的千兆以太网实时图像采集与传输系统设计

Design of Gigabit Ethernet Real-time Image Acquisition and Transmission System Based on FPGA

针对高速、远距离、大数据量图像数据传输的实际需求,设计了一种基于FPGA的千兆以太网实时图像采集与传输系统。以用户数据报协议作为通信协议,利用Altera公司的CycloneⅣE系列FPGA芯片对OV5640图像传感器采集的数据进行预处理并封装为以太网帧,通过GMII接口实现PHY芯片RTL8211EG与FPGA的连接,提出一种千兆以太网的硬件实现方式,采用Verliog HDL分别进行数据链路层、网络层、传输层的编写,最终实现图像采集、千兆以太网传输、上位机图像显示。经仿真测试,该系统运行稳定,各项功能满足设计要求。

A FPGA-based Gigabit Ethernet real-time image acquisition and transmission system is designed to meet the actual needs of high-speed,long-distance,and large-volume image data transmission.It takes User Datagram Protocol(UDP)as the communication protocol,preprocesses and encapsulates the data collected by OV5640 image sensor into an Ethernet frame by Altera s CycloneⅣE series FPGA chip,and realizes the connection between PHY chip RTL8211EG and FPGA through GMII interface.Then,a hardware implementation of Gigabit Ethernet is proposed and Verliog HDL is employed to separately write data link layer(MAC),network layer(IP),and transport layer(UDP).Finally,the system realizes image acquisition,Gigabit Ethernet transmission and Host computer image display.The simulation test shows that the system runs stably,and its functions meet the design requirements.