【作者】 李晟；

【导师】 黎洪生；

【作者基本信息】 武汉理工大学 ， 控制科学与工程， 2010， 硕士

【摘要】 随着传感器技术微电子技术嵌入式计算技术和无线通信等技术的进步,无线传感器网络(wireless Sensor Networks)得以迅猛发展,成为计算机学科的一个新领域,具有十分广阔的应用前景。无线传感器网络是由部署在监测区域内的大量廉价、低功耗的无线通信节点组成的自组织的网络系统,用来协作感知、采集和处理网络覆盖区域内的信息,并发送给监测者,其具有广阔的应用前景,对人类的生产和生活有着深远的影响。路由协议是无线传感器网络中数据传输的基础,它的设计好坏直接影响着无线传感器网络的性能。在大坝安全监测环境中,要求无线传感器网络必须具有高度的可靠性、较低的延时以及长时间的工作寿命,使得研究高数据交付率、低延时、低功耗的路由协议成为必然。本文在大坝安全监测环境下,对现有的典型路由协议进行分析,在定向扩散路由协议的基础上,在能耗、网络延时、传输可靠性三个方面对该协议做出改进,提出了基于大坝安全监测的定向扩散路由协议(DD-DAM),并通过NS-2仿真软件进行仿真,验证该协议的优越性。研究工作主要概括如下：(1)分析了常用的无线传感器网络路由协议特点,研究了典型路由协议在大坝安全监测上的应用需求。(2)分析了定向扩散路由协议的主要性能,通过仿真研究了定向扩散路由协议在大坝安全监测应用中的关键问题。(3)研究设计了一种改进的基于大坝安全监测的定向扩散路由协议(DD-DAM)。该协议结合被动分簇和剩余能量阈值两种机制,延长了网络寿命,提高了网络可靠性。仿真表明,该协议可满足大坝安全监测环境下无线传感器网络路由协议的设计要求。更多还原

【Abstract】 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.更多还原