无线传感器网络的节点均匀分布的研究.ppt

无线传感器网络的节点均匀分布的研究 Analysis of distribution uniformity of nodes in wireless sensor network 摘要 引言 2. 以往工作 3.节点均匀分布的数学评估模型 3.节点均匀分布的数学评估模型 4. 仿真分析 4. 仿真分析 4. 仿真分析 4. 仿真分析 5. 结论 LOGO * LOGO * * Abstract: Wireless sensor networks have severalspecial characteristics which make against the network coverage，such as shortage of energy，difficulty with energy supply and so on．In order to prolong the lifetime of wireless sensor networks．it is necessary to balance the whole network load．As the energy consumption is related to the situation of nodes，the distribution uniformity must be considered．In this paper，a new model is proposed to evaluate the nodes distribution uniformity by considering some parameters which in．clude compression discrepancy，sparseness discrepancy，self discrepancy，maximum cavity radius and minimum cavity radius．111e simulation results show that the presented model could be helpfu】for measuring the distribution uniformity of nodes scattered randomly in wireless sensor networks． 无线传感器网络中诸如能量不足，能量供应困难等问题制约了无线传感器网络的覆盖。为了延长网络的生存期，我们有必要研究整个无线传感器网络的负载平衡。因为节点的能耗与其状态位置有关，故节点必须均匀分布。在本文中，提出了一种新的模型，这种模型通过考虑一些诸如密集差异、稀疏差异、自身差异、最大空覆盖度、最小空覆盖度等来评估节点的均匀分布情况。仿真结果显示，此模型能有效的获得无线传感器网络中随机分散的节点分布情况。 Wireless sensor networks，which are composed of three major information technologies，the sensing，the computer technology an d wireless communication， are widely used at present．Many sensors interconnected in a region form a network to measure some physical parameters，process data and transmit signals．The wireless sensot networks can not only deal with the required inform ation，but also transfer data securely to accomplish the inform ation acquisition．It can be used widely in the fields of our living，scientific research， military，E-hospital，intelligent traffic， unmanned scout，intelligent weapo n， and SO on. 无线传感器网络目前已得到广泛应用，它主要有三个信息技术构成，分别是传感器技术、计算技术和无线通信技术。一个区域中许多节点相互连接成一个网络，以监测一些物理参数、处理数据和传送信息。无线传感器不仅处理需要的信息，而且安全地传送数据以完成信息获取。它能广泛应用在我们生活、科学研究、军事国