【作者】 温阳；

【导师】 徐晓辉；

【作者基本信息】 河北工业大学 ， 物理电子学， 2007， 硕士

【摘要】 无线传感器网络是一门新兴技术,是传感器技术、计算机网络技术、微机电系统(MEMS)发展的产物。作为一种新型的信息采集和处理技术,日益受到国内外的高度重视,主要应用在环境监测、国防军事、医疗卫生、反恐安全等领域的特殊场合。由于无线传感器网络通常工作在环境恶劣、地形复杂的场合,更换电源几乎是不可能的。因此,无论是硬件设计还是软件设计,能量问题始终是需要考虑的关键问题,特别是在大规模部署的传感器网络中,如何设计专用的协议来更好地节省能量,是人们关心的首要问题。本文重点从软件节能角度对无线传感器网络路由协议进行了研究。首先对基于数据收集的分层路由协议LEACH(Low Energy Adaptive Clustering Hierarchy,LEACH)进行了研究和系统仿真设计,并针对LEACH选簇机制的弊端对LEACH协议进行了改进,仿真表明,改进后的协议可以延长网络的生存周期。此外,本文还简要介绍了另一种分层路由协议PEGASIS,在对PEGASIS了解的基础上通过把PEGASIS算法与LEACH算法相结合设计出一种新的协议。仿真表明,新协议克服了在大规模网络中LEACH算法簇头节点能耗大和PEGASIS算法延时长的缺陷,比原有协议更适合于大规模传感器网络,可以延长网络寿命。更多还原

【Abstract】 Wireless sensor network (WSN) is a new technology. It appeared after sensor technology, computer technology, and MEMS technology developed. As a new technology of information collection, WSN is paid more attention in a lot domain. It’s used in environment inspection, military spy, medical treatment, counterstrike, etc.Because of the bad working circumstance and complex working terrain, replace batteries for WSN is impossible. So energy problem is a important problem no matter in hardware or software design. Especially in large-scale WSN, how to design special protocol to save energy is that people care about. This thesis main made a research of software. Analyze the principle and system emulation of LEACH routing protocol based on data collection and improved LEACH routing protocol contrapose the bug in cluster head election. Besides, in this thesis also introduced PEGASIS routing protocol and designed a new routing protocol by the way of combining LEACH and PEGASIS.更多还原