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描述了煤矿井下无线传感器网络研究应用的现状和存在的问题,给出了典型的基于位置的路由协议GPSR的特点及改进。为了考察该路由协议在井下采空区的性能,使用NS2网络仿真软件的Shadowing模式,通过大量模拟实验分析比较GPSR路由协议在不同节点个数场景中的性能,包括包成功投递的平均延时、包成功投递率、路由协议负载。研究结果表明在节点相对少的采空区场景下,GPSR协议表现出较好的特点和很好的鲁棒性。
Describes the current status and existing problems of research and application of wireless sensor networks in underground coal mines, and presents the characteristics and improvements of GPSR, a typical location - based routing protocol. In order to investigate the performance of this routing protocol in the downhole goaf, the NS2 network simulation software Shadowing mode is used to compare the performance of the GPSR routing protocol in different number of nodes scenarios through a large number of simulation experiments, including the average packet delivery delay, Packet delivery rate, routing protocol load. The results show that the GPSR protocol shows good characteristics and good robustness under the condition of relatively fewer goafs.