【摘要】 为了研究煤矿监测无线传感器网络的特殊环境,对NS2网络仿真场景进行了扩充,在NS2中加入障碍物构造出井下掘进工作面的场景。通过分析当前经典的无线传感器网络协议DSDV、DSR、AODV以及GPSR,使其运行在井下特殊的场景中。无线传感器网络由能量受限的节点组成,能量问题在井下尤为重要,在NS2中引入能量模型对其协议进行对比。按照包成功投递端到端的平均延时、包成功投递率和能量消耗这三个指标对四个路由协议进行了性能仿真评估,仿真结果表明基于地理位置信息的GPSR协议在井下表现出较好的特点、鲁棒性和节能效应,因此当网络结构变化频繁,要求较高的分组投递率时可选择GPSR协议。更多还原

【Abstract】 Through the extension of the current network simulation software NS2,it can simulate the circumstance of coal mine in the simulation software.This paper analyzed the characteristics of current monitoring wireless sensor networks for coal mine safety and the typical system of its coal mining entrance on the ground resolution firstly,and then summarized the AODV,DSDV,DSR and GPSR routing protocols which are typical routing algorithms in WSN.Wireless sensor network contains large number of nodes,whose battery power is very limited.The power is very important in the coal mine.We analyzed the change about energy of nodes in simulation by energy model in NS2.In order to compare the performance of the four routing protocols in coal mine,the obstacle model simulation soft tool NS2 was chosen to evaluate the performance of the four routing protocols through three measure gauges,i.e.average delay of packet delivery success,packet delivery success rate and energy consumption.The analytical results show that the GPSR routing protocol is featured by strong robustness,good virtues and energy efficient in coal mining entrance tunnels and it is a way to be applied to the real time monitoring networks in coal mines.更多还原