高速公路团雾检测技术研究

发布时间：2018-05-11 11:57

本文选题：无线传感器网络 + 高速公路　；参考：《南京理工大学》2015年硕士论文

【摘要】：随着我国经济的飞速发展,高速公路通车里程也在快速的增长,伴随而来的是高速公路上引发的恶性交通事故的增多。其中,相当多的事故是由恶劣天气造成的。团雾被称为高速公路上的“杀手”,因为团雾经常出现在清晨,这个时间段司机注意力较为懈怠和疲倦,而团雾的出现又很突然,并且范围小,不易被气象预报检测到,在局部形成的浓雾又使得司机很难把握路况,极易造成连环追尾事故。本文就是针对这一问题展开研究工作的。本设计旨在解决团雾这种局部性较强的低能见度气象造成的高速公路安全问题。系统由一组安置在高速公路沿线的能见度检测器组成,使用无线传感器网络技术作为通讯手段,采集的数据通过主控制器上传到当地的控制中心。根据我国的道路管理办法,能见度是道路管理决策的主要参考指标,所以本系统提供的团雾区域内能见度信息可以帮助管理者作出正确的决策。本系统没有使用传统的有线通讯方式,改用无线方式实现区域内的互连互通,降低了区域内的通讯成本。另外,系统附加了车辆检测器,用来在浓雾条件下为管理员提供雾区内的路况信息,团雾造成的事故多是前后车辆车速相差较大引起的,管理员可以根据团雾区域内的实际车速制定不同的管理策略。本设计中用无线传感器网络替代传统的有线技术,在实现基本的网络互通的基础上,研究了基于ZigBee技术的无线网络安全问题。无线网络安全问题是当下关注度较高的课题,而应用于高速公路监控领域的无线网络技术更加注重通信的安全性,本系统从设备管理、安全加密等角度,论证了ZigBee技术的安全性,并有针对性的作出了实验测试,结果表明正确的利用ZigBee技术可以有效地保证无线通讯的安全性。最后,经过一系列的测试和验证表明系统具有较高的可行性,具备一定的实用价值。
[Abstract]:With the rapid development of China's economy, the mileage of freeway traffic is also growing rapidly, accompanied by the increase of malignant traffic accidents caused by expressway. Among them, quite a few accidents are caused by bad weather. The fog is known as the "killer" on the freeway, because the fog often appears in the early morning. During this time period, the driver's attention is slack and tired, and the fog appears suddenly and has a small area, which is not easily detected by the weather forecast. The dense fog formed locally makes it difficult for drivers to grasp the road conditions and can easily lead to a series of rear-end accidents. This paper is aimed at this problem to carry out research work. The purpose of this design is to solve the safety problem of freeway caused by strong local low visibility weather. The system consists of a group of visibility detectors placed along the freeway. The wireless sensor network technology is used as the communication means. The collected data is uploaded to the local control center through the master controller. According to the road management method in our country, visibility is the main reference index of road management decision, so the visibility information provided by this system can help managers to make correct decision. This system does not use the traditional wired communication mode, but uses wireless mode to realize the interconnection and interworking in the region, which reduces the communication cost in the region. In addition, a vehicle detector is attached to the system, which is used to provide information on road conditions in the fog area for administrators under heavy fog conditions. Accidents caused by fog are mostly caused by large differences in vehicle speed before and after. The administrator can make different management strategies according to the actual speed in the fog area. In this design, the wireless sensor network is used to replace the traditional wired technology. Based on the basic network interworking, the security of wireless network based on ZigBee technology is studied. The problem of wireless network security is a subject of high concern at present. However, the wireless network technology applied in the field of highway monitoring pays more attention to the security of communication. This system is based on the aspects of equipment management, security encryption and so on. The security of ZigBee technology is demonstrated, and the experimental results show that the correct use of ZigBee technology can effectively ensure the security of wireless communication. Finally, a series of tests and verification show that the system has high feasibility and practical value.
【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U495

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