Dissertation > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation components,parts > Transmitter ( converter),the sensor > Sensor applications

Research on Improvement of LEACH Routing Algorithm of Wireless Sensor Networks

Author LiuYuXiu
Tutor ChaiQiaoLin;JiangYan
School Shandong University
Course Computer technology
Keywords wireless sensor network(WSN) GPS Lifetime of network OMNET++ simulation
CLC TP212.9
Type Master's thesis
Year 2010
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Wireless sensor network (WSN) is by numerous, simple structure, low data rate, low price of wireless sensor node, through the way of wireless communication in a data center, jump, self-organization of wireless sensor network. Very suitable for unattended, human difficult to reach and maintain the network environment, so use wireless sensor network (WSN) in environmental monitoring and weaponry, industry, agriculture and daily life with very wide application prospects. With the coming of information revolution marks the third of the network, and wireless sensor network research and application to a new high. Through the content, humans will can from the net at any time any of the location of the communication between people and people connect to expand and connected with the communication between people and things, make wise conversation. Although things exist in the networking as object is a continuous supply of power nodes in the network, but also one of the wireless sensor network, so things will inevitably promote development of networking with wireless sensor network. Current research in wireless sensor networks, but there are many hotspots in wireless sensor networks of sensor nodes energy limited is keen to remain problems of research. Because of wireless sensor network sensor node energy limited and not get supply, so energy problem has been contained a wireless sensor network applications, promotion and development.This paper is mainly in wireless sensor networks is studied, the energy problem in the research of LEACH algorithm, based on outstanding problems proposed the corresponding solution, and to realize the improved algorithm. In wireless sensor networks in total energy of sensor nodes to remain the same circumstances, the improved algorithm into the GPS positioning, effectively the entire network clumps and established in the routing table, data transfer process saves the time of establishment, routing, In data collection according to user requirements in the maximum range of data collection, reduce the collected data diversity, effectively reduce cluster-heads for the collected data fusion energy needed to, The largest collection of data within the scope of control of sensor nodes, a model of sensor nodes in as little as possible so that we can work mode, the effective energy saving of wireless sensor network, also can reduce energy cluster-heads for the collected data fusion energy needed to, The first group established clusterhead points, according to certain calculation method makes the first regiment clusterhead points total energy consumption rate and common node energy consumption rate is wireless sensor networks, keep the balance of power. The improved algorithm simulation tools OMNET++the simulation results show that the improved algorithm, although the first death nodes appear than LEACH algorithm, transmission process data redundancy slightly, but the whole network of network survival cycle has made certain degree of extension.

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