高速公路安全行车系统研究

发布时间：2018-05-21 08:38

本文选题：安全行车 + ARM　；参考：《南京信息工程大学》2013年硕士论文

【摘要】：在高速公路建设飞速发展的时代,高速公路安全行车问题一直是智能交通领域的重要研究对象。大量数据表明在不良天气条件下,低能见度天气对高速公路行车安全产生的影响极大。如今环境污染日益严重,低能见度的天气状况逐渐增多,“雾霾”天气也时有出现。目前,预防因恶劣天气而发生的交通事故主要方法有封锁公路以及使用高速公路车辆诱导系统等,但这些方法均不能切实有效地解决低能见度下的安全行车问题。本文旨在针对上述问题,以提高高速公路行车安全性为目的,研究一种高速公路安全行车方案,为高速公路安全行车提供技术支持。该方案要求在低能见度的天气条件下车辆执行排队协作行车策略,利用技术手段使队列中的车辆在行驶速度上达成协调,从而在高速公路通畅行驶的前提下保证高速公路行车安全。本文主要对如下内容进行了研究： 1、分析在低能见度条件下导致高速公路发生事故的因素,设计了排队协作行车策略,仿真表明当车队的整体速度达成协调时可以提高行车安全性。 2、为了让驾驶员在低能见度条件下可以直观地了解周围车辆的行车状况,设计了高速公路安全行车终端。该终端主要是利用GPS技术获取车辆的地理位置信息,在车辆间建立ZigBee无线通信网络,装有车载终端的车辆成为无线网络中的节点,从而使无线网络中的车辆共享其他车辆的行车信息。通过ARM处理器对共享的数据进行处理,计算出与周围车辆的相对位置,最终在显示屏上显示周围车辆的分布情况。 3、完成车载终端的硬件设计、Linux平台的搭建、ZigBeeCC2420驱动程序的设计、系统图形化界面设计。安全行车系统的测试表明本文设计的高速公路安全行车系统可以帮助驾驶员适时合理地调节速度,保持安全的车间距,以防交通事故的发生。
[Abstract]:In the era of rapid development of expressway construction, expressway safety driving problem has been an important research object in the field of intelligent transportation. A large number of data show that the low visibility weather has a great impact on the highway safety under the bad weather conditions. Today, environmental pollution is increasingly serious, low visibility weather conditions are gradually increasing, "haze" weather has also appeared from time to time. At present, the main methods to prevent traffic accidents caused by bad weather are road blockade and the use of highway vehicle guidance system, but these methods can not effectively solve the problem of safe driving under low visibility. In order to improve the safety of freeway driving, this paper aims to study a safe driving scheme for freeway, which can provide technical support for safe driving of expressway. In this scheme, vehicles in low visibility weather conditions are required to implement queueing cooperative driving strategy, and make use of technical means to coordinate the speed of vehicles in the queue. In order to ensure the expressway traffic safety under the premise of smooth running. The main contents of this paper are as follows: 1. After analyzing the factors that cause the accidents in the freeway under the condition of low visibility, the queuing cooperative driving strategy is designed. The simulation results show that the safety of the motorcade can be improved when the overall speed of the motorcade is coordinated. 2. In order to make the driver know the driving condition of the surrounding vehicle directly under the condition of low visibility, the safe driving terminal of expressway is designed. This terminal mainly uses the GPS technology to obtain the geographical position information of the vehicle, establishes the ZigBee wireless communication network between the vehicles, and the vehicle equipped with the vehicle terminal becomes the node in the wireless network. Thus, the vehicles in the wireless network share the driving information of other vehicles. The shared data is processed by the ARM processor, and the relative position of the vehicle is calculated. Finally, the distribution of the surrounding vehicle is displayed on the display screen. 3. Finish the hardware design of the vehicle terminal and build the Linux platform. The driver of ZigBeeCC2420 is designed, and the graphical interface of the system is designed. The test of safe driving system shows that the safe driving system designed in this paper can help the driver to adjust the speed and keep the safe distance between the vehicles at the right time to prevent traffic accidents.
【学位授予单位】：南京信息工程大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：U495;U492.8

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