| As the development of sensors technology, microelectronic technology, embedded computing technology and wireless communication technology, Wireless sensor network which will be used widely develop quickly and become a new field of computer science. Wireless sensor network is constituted by abundance of cheap, low-power wireless communication nodes in monitoring the region's, it is used to cooperative sensing, collecting and processing information within the network coverage area, and send the information to monitors, and it change our life everywhere.Routing protocol is base of data transmission of wireless sensor networks, its design affect the performance of wireless sensor networks. the dam safety monitoring environment require that wireless sensor networks must have high reliability, low latency, and long working life, therefore Routing protocol must have a low energy consumption, low network delay, high delivery ratio. In this paper, we analyze the typical routing protocol and propose a dam-safety monitor Directed Diffusion Routing protocol which is improved on energy consumption, network delay, Delivery Ratio based on original routing protocol, and verify the superiority of the protocol by the NS-2 software simulation, we have completed the following works:Analyzing the common characteristics of routing protocols of wireless sensor network routing protocols. Researching the application requirements for typical routing protocols on the dam safety-monitoring.Analyzing the main directed diffusion routing protocol performance, researching the directed diffusion routing protocol in dam safety monitoring applications in the key issues.Research and design an improved directed diffusion routing protocol (DD-DAM) based on dam safety monitoring. The protocol combined with passive clustering and the remaining energy threshold,prolong the network lifetime, improve network reliability. Simulation shows that the protocol meet wireless sensor network routing protocol design required on the dam safety monitoring environment. |
