基于WSN车辆信息采集方法及相关技术的研究

发布时间：2018-01-05 16:42

本文关键词：基于WSN车辆信息采集方法及相关技术的研究　出处：《合肥工业大学》2014年硕士论文　论文类型：学位论文

【摘要】：智能交通系统(Intelligent Traffic System, ITS)是解决日益严重的道路交通问题的有效途径,也是未来交通系统的发展方向。道路交通信息的采集技术是ITS的关键技术之一,车载自组网(Vehicular Ad Hoc Networks, VANET)是ITS的基础,可以利用部署在路边的基础设施(Roadside infrastructure unit, RSU)实现车辆信息的采集,但RSU的部署成本较高。无线传感器网络(Wireless Sensor Networks, WSN)是由大量的能够实时监测和采集覆盖区域内各种监测对象信息的传感器节点通过自组织的方式构成的网络,被广泛的应用于各种不同的研究领域。近年来,国内外学者对WSN在ITS中的应用技术进行了广泛的研究。针对RSU部署成本较高、灵活性较差,以及传统采集方法数据单一、检测精度差、易受环境影响等问题,探讨一种基于WSN车辆信息采集的方案。论文首先分析了WSN的相关技术,对WSN应用于车辆信息采集的可行性进行分析,在此基础上提出一个基于WSN车辆信息采集框架,为了解决信息采集节点与车辆间的通信问题,设计了两种通信方案。重点对车辆信息中信息采集节点的动态休眠、数据处理、缓冲区优化、交通管理中心的消息发布、面向节点关联度的路由策略等问题进行了研究,结合应用特点给出具体的解决方法。最后,对本文方案及其相关问题的解决方法进行了分析,分析结果表明了本方案的有效性,具有成本低、灵活性强、部署和维护方便等特点。通过OPNET平台上对本方案的关键技术进行仿真实验,实验结果表明了本方案的有效性。
[Abstract]:Intelligent Traffic system (ITSs) is an effective way to solve the increasingly serious road traffic problems. The acquisition technology of road traffic information is one of the key technologies of ITS, vehicle Ad Hoc Networks. Vane) is the foundation of ITS and can take advantage of the roadside infrastructure unit deployed on the side of the road. RSUs can collect vehicle information, but the deployment cost of RSU is high. Wireless Sensor Networks is a wireless sensor network. WSNs are a network composed of a large number of sensor nodes which can monitor and collect the information of various monitoring objects in the coverage area in real time through self-organization. It has been widely used in various research fields. In recent years, domestic and foreign scholars have carried out extensive research on the application technology of WSN in ITS. In view of the high cost of RSU deployment, the flexibility is poor. And the traditional data acquisition method is single, the detection accuracy is poor, easy to be affected by the environment and so on. This paper discusses a scheme of vehicle information collection based on WSN. Firstly, the paper analyzes the related technology of WSN. This paper analyzes the feasibility of applying WSN to vehicle information collection, and puts forward a framework of vehicle information collection based on WSN, in order to solve the problem of communication between information acquisition nodes and vehicles. Two communication schemes are designed, which focus on dynamic dormancy, data processing, buffer optimization and traffic management center message release. The routing strategy oriented to the node correlation degree is studied, and the specific solution is given according to the characteristics of the application. Finally, the solution of this paper and its related problems are analyzed. The results show that the scheme is effective, low cost, flexible, easy to deploy and maintain. The key technologies of the scheme are simulated on OPNET platform. The experimental results show the effectiveness of the scheme.
【学位授予单位】：合肥工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U495;TP212.9;TN929.5

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