Research On Remote Monitoring System Based On Wireless Mesh Network

With the rapid development of network technology,the network mode of the remote monitoring system is also changing.Wireless Mesh network is a new type of wireless communication technology in recent years.A remote monitoring system based on wireless Mesh network is constructed to transmit high definition video image by constructing a self-organized wireless Mesh network,can provide high speed,high flexibility of wireless access,and it has the advantages of convenient deployment,strong expansibility,convenient maintenance and so on.It can be widely applied to many fields such as intelligent transportation,public safety,industrial control and so on.This paper focuses on the routing protocol of remote monitoring system based on wireless Mesh network and the software and hardware implementation of the system,the main research work includes:1.Aiming at the redundancy problem in the OLSR protocol,a global minimum MPR set selection algorithm based on the isolated points is proposed.The algorithm generates a new isolated point step by step by eliminating the minimum reachable number of nodes and obtains the minimum MPR set.At the same time,the effect of the global MPR node is considered when the minimum reachable number of nodes are not unique,so as to optimize the number of MPR nodes in the whole network.Simulates on NS2 platformand the results show that:the proposed MPR selection algorithm compared with the MPR selection algorithm based on greedy strategy decreases the number of MPR nodes in the whole network by 7%,reduces the network control message overhead significantly,and the network performance is improved.2.Design and realize the remote monitoring system based on Mesh wireless and test.Firstly,the wireless Mesh network is realized based on the routing development board,and then the video capture terminal is implemented by transplanting video server.Video capture terminaltransport collected datain the form of flow through the Mesh network,the monitoring center real-time viewsthrough the client.The testing mainly include verifying the function of wireless Mesh network,the bandwidth and other network performance test,the monitoring results of the clarity,response delay test.