%0 Journal Article
%T 无源无线传感网在轨道交通车辆健康监测中的应用<br>Application of passive wireless sensor network in health monitoring of rail transit vehicles
%A 崔恩放
%A 张宏科
%A 杨冬
%J 北京交通大学学报
%D 2018
%R 10.11860/j.issn.1673-0291.2018.05.003
%X 摘要 采用无线传感器网络和云计算实现轨道交通车辆健康状况的实时自动化监测,是轨道交通智能化运营的发展趋势. 为了解决轨道交通车辆车轴健康监测场景中传感器网络寿命有限和电池更换困难的问题，本文首次提出了基于无源无线传感网的轨道交通车辆健康监测系统，设计了公网与私网两种方案，包括相应的网络拓扑、时隙分配算法与中继节点选择算法.在真实地铁环境中部署了单节点进行了数据采集和分析实验，并对较为复杂的公网方案进行了仿真实验.实验结果表明：部署传感器节点进行智能监测是可行的，使用无源无线传感网极大的延长了网络寿命，本文所提出的公网方案在地铁环境下的吞吐量为3.2 KB/s，丢包率为5%.<br>Abstract：The use of Wireless Sensor Networks (WSNs) and cloud computing to conduct real-time automatically health monitoring of rail transit vehicles is a trend of intelligent rail transit operation. In order to solve the problems of limited life time of sensor networks and difficult battery replacement in the scene of axle health monitoring of rail transit vehicles, we propose a rail transit vehicles health monitoring system based on passive WSNs in this paper. Two network schemes are designed based on public network and private network respectively, including the corresponding network topology, time slot allocation algorithms, and relay nodes selection algorithms.Single nodes are deployed in the real subway environment to carry out data acquisition and analysis experiments, and the more complex public network scheme is simulated. The simulation results prove that the passive WSN greatly prolongs network life. The throughput of the proposed public network scheme in the subway environment is 3.2 KB/s and the packet loss rate is 5%.
%K 无源无线传感网
%K 轨道交通
%K 车辆健康监测&lt
%K br&gt
%K passive wireless sensor network
%K rail transit
%K vehicle health monitoring
%U http://jdxb.bjtu.edu.cn/CN/abstract/abstract3375.shtml