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《无线传感器网络LEACH路由研究与实现》》-毕业论文.doc

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PAGE 1 PAGE 1 学号 : 200731200104 密级 : 公开 武汉大学本科毕业论文 无线传感器网络LEACH路由研究与实现 院(系)名 称 : 电子信息学院 专 业 名 称 : 电子信息工程 学 生 姓 名 : 二〇一一年五月 BACHELORS DEGREE THESIS OF WUHAN UNIVERSITY Wireless sensor network LEACH routing research and implementation College : School of electronic information Subject : Electronic Information Engineering Name : Feng Jian Directed by : Zeng Yuanyuan May 2011 摘  要 无线传感器网络(WSN)集成了传感器、嵌入式计算、分布式信息处理和无线通信四大技术,是一种全新的信息获取、处理和传输技术。它可应用于军事、环境监测、医疗救护、商业领域等,因而具有十分广阔的应用前景,引起了学术界的高度重视。 本文重点研究WSN的LEACH路由协议,无线传感器网络节点数量庞大,单个节点资源极其有限,其路由协议设计的首要目标就是提高能效性,延长网络寿命。本文总结了WSN的发展历程、概念、结构及应用,分析了WSN的关键技术问题,研究了WSN路由协议的分类,并分析和比较了目前比较有代表性的路由协议及其优缺点,有针对性的选择了LEACH路由作为研究重点,实现了LEACH路由的路由算法,在此基础上分析了其存在的问题,并针对这些问题在原有的算法的基础上提出了改进方案:由于簇首的选择没有考虑到节点能量的问题,于是改进了阈值T(n)的计算问题。 对上述改进,本文采用在C++下进行了模拟和分析。模拟结果表明,改进后的路由算法比原LEACH路由算法:系统整体能耗降低,网络生命周期提高10%。 关键词:WSN;无线传感器网络;路由协议;LEACH;能量有效性 ABSTRACT Wireless sensor network, which is made by the convergence of sensor, embedded computing,distributed information processing and wireless communication technologies, is a new information acquisition,processing and transmission technologies. It can be used in military, environmental monitoring,medical and commercial, etc.it has a wide application future. Both academia and industries are very interested in it. The study of LEACH routing protocol for WSN is the main part of this dissertation.The numbers of sensor node in WSN are numerous and single node is extraordinarily limited in resource. The all-important aim of designing routing protocol of WSN is to reduce the overall energy dissipated in the network and to maximize the network lifetime. We summed up the development history, concept, structure of WSN and analyzed the key technical issues and network protocols of WSN. we studied the network protocols of WSN and routing protocols on the classification system. We analyzed and compared some routing protocols from their advantages and disadvantages that proposed by oversea researcher; we choose
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