摘要
为研究无线传感器网络在特定区域内进行感知的表现,在目标区域内部署传感器节点,测出无人状态下和有人进入时各个节点的接收信号强度指示,并用一种基于中值滤波的被动式无源感知算法对结果进行分析。分析结果表明:无线传感器网络对部署环境要求不高,它可以应用于诸多不依赖于环境的领域;当有人进入监测区域时,必定会对区域内节点的接收信号产生影响,使接收信号强度有所波动,通过分析这种波动就可以实现感知;采用中值滤波的方式对被动式无源感知算法进行优化,该方法能有效地减少随机性和不稳定性带来的误差影响,使测量值更接近于真实值,也使感知算法的准确度有所提高。
In order to study the perceptual performance of wireless sensor networks in a specific area,sensor nodes are deployed in the target area to detect the received signal strength of each node in unmanned state and when a person enters.Then,a median filter based passive device-free algorithm is used to analyze the results.The results show that the wireless sensor network has low requirements on the environment and can be applied to many environment-independent fields.When a person enters the monitoring area,it will definitely affect the received signal strength indicator of the nodes in the area,and the target can be realized by analyzing the fluctuation.The passive device-free sensing algorithm is optimized by median filter.This method can effectively reduce the error caused by randomness and instability,and make the measured values more close to the true value.It can also improve the accuracy of the perception algorithm.
作者
冯俞璋
王磊
王元麒
李益红
谭毓银
宋浩
FENG Yu-zhang;WANG Lei;WANG Yuan-qi;LI Yi-hong;TAN Yu-yin;SONG Hao(State Key Laboratory of Marine Resource Utilization in South China Sea,College of Information Science and Technology,Hainan University,Haikou 570228,China;University of Florence,Florence 2013,Italy;Key Laboratory of Systems Bioengineering(Ministry of Education),SynBio Research Platform,Collaborative Innovation Centre of Chemical Science and Engineering,School of Chemical Engineering and Technology,Tianjin University,Tianjin 300072,China)
出处
《广西大学学报（自然科学版）》
CAS
北大核心
2018年第2期604-611,共8页
Journal of Guangxi University（Natural Science Edition）
基金
南海海洋资源利用国家重点实验室(海南大学)开放课题项目(2016010)
国家自然科学基金资助项目(61463011)
国家重点研发计划课题项目(2016YFC0700804)
