Real-time Traffic Monitoring with Magnetic Sensor Networks

Real-time Traffic Monitoring with Magnetic Sensor Networks
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使用磁传感器网络进行实时交通监控

DOI:
--
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发表时间:
2011
影响因子:
1.1
通讯作者:
Cui, Li
Cui, Li
中科院分区:
计算机科学4区
文献类型:
--
作者:
Zhang, Lei;Wang, Rui;Cui, Li

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无线传感器网络(WSN)为现有的交通监控系统(如视频识别和感应回路)提供了一种经济、方便的替代解决方案。然而,利用无线传感器网络进行道路交通信息实时采集存在许多技术难题,如低信噪比条件下车辆的准确检测和可靠的车速计算。在本文中,我们提出了一个系统的解决方案,在道路上的实时交通监测与磁传感器网络。提出了一种基于相似性的车辆检测算法(SBVD),通过计算道路信号和参考信号之间的相似性来检测低信噪比条件下的车辆。提出了一种协同速度计算(CSC)机制,通过冗余节点和车辆出现的准确报告来可靠地计算车辆速度。CSC机构能够准确可靠地计算车速。我们通过仿真和实验证明,我们提出的解决方案有效地工作在嘈杂的道路环境。车辆检测率在90%以上,无虚警发生,速度计算误差率在10%以下。
Wireless Sensor Networks (WSN) provide an economical, convenient alternative solution to existing traffic monitoring systems, such as video recognition and inductive loops. However, there are many technical challenges in on-road real-time traffic infor- mation collection with WSN, e.g. accurate vehicle detection in low Signal-Noise-Ratio (SNR) conditions and reliable vehicle speed calculation. In this paper we propose a sys- tematic solution to on-road real-time traffic monitoring with a magnetic sensor network. We propose a Similarity Based Vehicle Detection (SBVD) algorithm to detect vehicles in low SNR conditions by calculating the similarity between on-road signals and a ref- erential signal. We propose a Collaborative Speed Calculation (CSC) mechanism to cal- culate vehicle speed reliably by redundant nodes and accurate reports of vehicle appear- ance. The CSC mechanism can calculate vehicle speeds accurately and trustworthily. We demonstrate through simulations and experiments that our proposed solution works ef- fectively in noisy on-road environments. The vehicle detection rate is above 90% while no false alarm occurs and the error rate of speed calculation is under 10%.
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