摘要
介绍了一种基于无线传感器网络的交通检测系统,通过在路边布置两个距离已知的信标节点接收的RSSI值大小来判断移动节点的到达信标节点的时刻,因为距离越近RSSI值越大,所以当RSSI值达到最大时就是移动节点到达信标节点的时刻,最后根据已知的距离和分别到达两个信标的时刻计算出速度。文章对该测速系统进行了实物实验,并用MATLAB对实验数据进行处理,分析结果表明这个系统具有一定的实用性。
This paper introduces a kind of traffic speed measuring system based on wireless sensor network （WSN）, by the side of the road layout two distance from known beacon node receives the RSSI value size to determine the time the arrival of the mobile node beacon nodes, because the closer distance RSSI value is larger, so when the RSSI value maximum is the moment when the mobile node to beacon node, according to the known distance and separation are arrived at moment to calculate the velocity of two beacon. The physical experiment was carried out the speed measuring system, and uses MATLAB to deal with the experimental data, the analysis results show that the system is practical.
出处
《信息技术》
2015年第7期106-108,112,共4页
Information Technology
