【作者】 管恩花；

【导师】 郭忠文；

【作者基本信息】 中国海洋大学 ， 计算机应用技术， 2005， 硕士

【摘要】 传感器网络是由许多传感器节点组成的一种无线自组织网络,这些传感器节点随机地分布在某一区域,以自组织的形式构成网络。传感器自身的优点以及无线通信的迅速发展赋予了传感器网络很好的应用前景。 随机分布的集成有传感器、数据处理单元和通信模块的微型传感器节点借助于节点中内置的形式多样的传感器测量所在周边环境中的热、红外、声纳、雷达和地震波信号,从而探测包括温度、湿度、光强度、压力、土壤成分、移动物体的大小、速度和方向等众多人们感兴趣的物质现象。本文正是在传感器网络这些特点的前提下进行相关的研究工作,提出了一种将传感器网络应用于导航中的算法——基于网格划分得传感器网络导航算法(NADG):在导航区域放置若干传感器,根据传感器节点所探测的数据来描述危险区域的分布,装配在被引导航对象上的无线通信模块能实时地与传感器网络进行通信,从而引导被导航对象避开危险区域,安全地到达目的地。仿真结果证明,本算法得到的路由是安全的,并能很好地适应网络环境的动态变化。 无线传感器网络与传统的无线网络有着不同的设计目标,后者在高度移动的环境中通过优化路由和资源管理策略来取得最大化的带宽利用率,同时为用户提供一定的服务质量保证。在无线传感器网络中,因为它们通常运行在人无法接近的恶劣甚至危险的远程环境中,设计有效的策略延长网络的生命周期成为无线传感器网络的核心问题。基于上述考虑,本文在所提算法基础上作了改进(INADG),仿真结果证明,改进的算法能够很大程度上提高传感器网络的生命周期,优于其他算法。更多还原

【Abstract】 The sensor network is a wireless Ad Hoc and consists of many sensor nodes. The sensors distributing over an area randomly organize and reorganize themselves autonomously in response to task requirements or triggers from the environment. The excellence of sensor itself and the development of wireless communication give the sensor networks a very good application foreground.The distributed random micro sensor nodes integrate with sensor, data processing unit and communication module. They are able to sense the around environment elements people are interest in through its inner multiple modalities, such as: heat, infrared, sonar and volcanoes signals, Thereby detect things people interest in. This paper does the researches building on these features of sensor networks and give a navigation algorithm guiding the objects across an area where exists some dangers or obstacles for the objects—NADG. By placing some sensors to detect and describe the distribution of dangers, the wireless communication module mounted in the object can communicate the sensor networks at real time. So the object can avoid the dangers and arrives at destination safely. The simulation results show that the route of the algorithm computed is safe and can adapt to the network’s dynamic changes.There are different goals between sensor networks and traditional wireless networks. The latter is to get the largest bandwidth and guarantee QoS for users through optimizing routing and resources management in moving environment. While in sensor networks which in extremely or very dangerous environments that human can’t almost access, to enlarge their life circle is the most important issue. For considering this, the paper develops an improved algorithm (INADG). The simulation shows it can improve the life circle greatly, better than other algorithms.更多还原