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Clustering Algorithm of WSN in Traffic Information Collection

CAO Jiea,MA Zhong-yub,HOU Lianga,WANG Jin-huab(a.College of Computer and Communication;b.College of Electrical and Information Engineering,Lanzhou University of Technology,Lanzhou 730050,China)  
Wireless sensor network is an important tool to collect real-time traffic information.Because of the limited node energy,it is essential to design an energy-efficient clustering routing algorithm to prolong the network cycle.This paper establishes an intelligent transportation model in the application of wireless sensor network.According to the characteristics and requirements,the paper analyzes both the advantages and disadvantages of LEACH agreement and proposes an improved clustering algorithm with energy loading balance.The algorithm considers the residual energy and position of cluster head node and then improves cluster head electing mechanism of LEACH agreement.It establishes multiple hops routing mechanism between clusters to avoid energy consumption as for single jump.A method for cluster's reconstruction is also presented to avoid unnecessary energy consumption as for frequent reconstruction.The results show that the proposed algorithm can effectively balance the consumption distribution of node energy,extend node and network life cycle.It can perform well in the intelligent transportation systems(ITS) based on WSN.
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