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.
维普
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