应急条件下无线传感器网络节点部署的覆盖模型研究

发布时间：2018-04-09 09:15

  本文选题：资源约束　切入点：应急救援　出处：《浙江工业大学》2014年硕士论文

【摘要】：当今社会对人的生命与人文关怀越来越重视关注,要求对应急救援能力的要求越来越高,必须不断提升灾害的预防能力以及救援调度的效率。近些年无线传感器网络作为一种切实可行的监测灾情信息的新技术,其节点部署的覆盖可靠性是关键,因此应急条件下无线传感器网络节点部署的覆盖可靠性问题是一个亟需解决的实际性问题。本论文主要内容有如下5点：(1)从概率角度定义无线传感器节点部署的覆盖可靠性,以某一置信水平下的面积覆盖率置信区间为目标,建立应急条件下无线传感器网络节点部署的覆盖模型,即节点数量、置信水平、感知半径与面积覆盖率之间的数学表达式。(2)在求解网络覆盖面积时,提出一种新的解决在特定区域,多圆相交构成的多曲边形面积覆盖的算法。这种算法能够做到精确计算相同圆相交而形成的多曲边形面积,并且流程相对简单且计算精度高,使用普通计算机即可快速得到大面积下的计算结果,是一种有应用价值的算法。(3)根据本文所提出的新算法利用VB编程开发出无线传感器节点部署仿真系统,为接下来的无线传感器节点随机抛洒仿真实验提供了平台。(4)启动无线传感器节点部署仿真系统,设置好网络参数进行大量仿真实验,通过大量仿真实验的数据分析发现,满足某一置信水平下的面积覆盖率的要求至少所需抛洒的节点数。(5)通过参数拟合得到应急条件下无线传感器网络节点部署的覆盖模型,该式给无线传感器网络节点部署的参数设计提供了依据。由此推导在某一置信水平下,给出了满足特定的面积覆盖率最少所需抛洒的传感器节点数公式,这给最少抛洒多少节点数量能满足无线传感器网络的面积覆盖率要求提供了参考依据。
[Abstract]:Nowadays, the society pays more and more attention to the human life and humanity care, and demands the ability of emergency rescue more and more. It is necessary to continuously improve the ability of disaster prevention and the efficiency of rescue dispatch.In recent years, wireless sensor networks as a feasible new technology to monitor disaster information, its node deployment coverage reliability is the key.Therefore, the coverage reliability problem of wireless sensor network node deployment under emergency conditions is a practical problem that needs to be solved.The main contents of this paper are as follows: 5: 1) the coverage reliability of wireless sensor node deployment is defined from the point of view of probability, and the target is the area coverage confidence interval at a certain confidence level.The coverage model of wireless sensor network node deployment under emergency condition is established, that is, the mathematical expression between node number, confidence level, perceptual radius and area coverage.In this paper, a new algorithm is proposed to solve the problem of the area coverage of polygonal edges which is composed of intersecting multiple circles in a specific region.This algorithm can accurately calculate the area of multi-curved edges formed by the intersection of the same circle, and the flow is relatively simple and the calculation accuracy is high. The results of calculation under large area can be obtained quickly by using common computer.According to the new algorithm proposed in this paper, a wireless sensor node deployment simulation system is developed by VB programming.This paper provides a platform for the next simulation experiment of random sprinkling of wireless sensor nodes. (4) start up the simulation system of wireless sensor node deployment, set the network parameters for a large number of simulation experiments, and find out through the data analysis of a large number of simulation experiments,The coverage model of wireless sensor network node deployment under emergency condition is obtained by parameter fitting, which meets the requirement of area coverage at a certain confidence level and at least the number of nodes that need to be sprinkled.This formula provides a basis for the parameter design of node deployment in wireless sensor networks.Under a certain confidence level, the formula of the number of sensor nodes required to satisfy the minimum coverage of a given area is derived.This provides a reference for the minimum number of nodes to meet the requirements of wireless sensor network area coverage.
【学位授予单位】：浙江工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP212.9;TN929.5
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本文编号：1725793