摘要
为解决视频监控场景分布距离远,节点数多实时性要求高等问题,设计了一种基于FPGA的分布式自组网监控系统。系统在硬件上由路由器板和接口板两部分组成,设计LVDS光电转换接口实现远距离高速传输,设计百兆、千兆以太网接口兼容多种网络监控设备及上位机终端。在软件上,通过对RIP路由协议的改进,实现了动态自组网设计可形成任意网络拓扑,通过对报文、路由表及路由更新规则的改进,提升了路由更新的收敛速度及网络冗余度,通过环路抑制和震荡处理机制进一步维护了路由网络的稳定性。经多次传输测试,该系统单路实时图像传输速率约为3.04 Mb/s,最大丢包率约为1.95%,达到实时视频传输要求,在实际生产中具有一定应用价值。
A distributed ad hoc network monitoring system based on FPGA is designed to solve the problems of long distance distribution of video monitoring scenes and high real-time requirements for multiple nodes.The system consists of two parts in hard-ware:a router board and an interface board.The LVDS photoelectric conversion interface is designed to achieve long-distance high-speed transmission,and the 100 Mbit and Gigabit Ethernet interfaces are designed to be compatible with various network mon-itoring devices and upper computer terminals.In terms of software,the RIP routing protocol has been improved to achieve dynamic ad hoc network design that can form any network topology.By improving packets,routing tables,and routing update rules,the con-vergence speed and network redundancy of routing updates have been improved.The stability of the routing network has been further maintained through loop suppression and oscillation processing mechanisms.After multiple transmission tests,the single channel re-al-time image transmission rate of the system is about 3.04 Mb/s,and the maximum packet loss rate is about 1.95%,which meets the requirements of real-time video transmission and has certain application value in actual production.
作者
耿坤
张会新
GENG Kun;ZHANG Huixin(National Key Laboratory for Electronic Measurement Technology,North University of China,Taiyuan 030051)
出处
《舰船电子工程》
2024年第8期128-134,共7页
Ship Electronic Engineering
关键词
分布式
动态路由
LVDS
以太网
光电转换
distributed
dynamic routing
LVDS
Ethernet
photoelectric conversion Class Number TN914.3
