ZigBee无线传感器网络性能仿真和实验研究

Performance evaluation for ZigBee-based Network wireless sensor network using simulation and experiments

无线传感器应用于农业领域中采集植物的水分等一些生理和环境参数,随农作物的生长产生的障碍或电池电量使网络节点间通信质量变差。为了保障无线传感器网络的正常通信,试图加入功率较大、抗干扰性较强的长距离路由节点改善网络连通性。本文用NS2仿真研究了加入长距离路由节点前后网络连通性变化,以及在不同网络负载、不同网络连通性下,无线传感器网络在时延、丢包率和流量方面的变化情况。研究表明,加入长距离路由节点后,改善了网络连通性,并有较好的网络性能。

Wireless sensor networks are used to collect physiological and environmental informations of plants in the agricuture field., communication quality of WSNS becomes worse with the growth of crops and reduction of battary. In order to guarantee communica- tion quality of WSNS, this paper presents a method to add long-distance routing nodes which have higher power and stronger anti- interference to impove the connectivity. This paper investigate connectivity with long-distance routing nodes and delay, packet loss rate, throughput under different network load, connectivity. The results show that adding long-distance routing nodes to WSNS can improve connectivity and performance.