文档介绍：2011届本科毕业论文(设计)
基于RFID的雾天高速公路实时预警系统的设计
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基于RFID的雾天高速公路车辆实时预警系统的设计
摘要
本文针对雾天高速公路频繁发生的交通事故, 设计了基于超高频远距离RFID技术的车辆实时预警系统。RFID技术是一种非接触式自动识别技术,可快速读取电子标签,同时识别多个高速运动的物体,适应各种恶劣环境。其中信息采集模块就是利用该技术来实现对车辆身份的自动识别与信息采集,该方法弥补了传统车辆信息采集中的许多缺陷,并实现了雾天行驶车辆的实时预警。论文首先对射频识别系统的组成、分类及原理等方面进行了详细介绍。其次对系统进行了硬件及软件设计。硬件设计主要包括车辆检测模块、射频识别模块、数据传输及处理模块、车载报警显示装置四部分,主要从设备的选型、性能和应用等方面进行了分析与研究。其中射频识别模块中读写器设计两个天线接口,使得识别标签范围更广,大大降低安装读写器所需的成本。最后对该系统进行了软件设计。软件部分主要包括读写器程序设计、射频标签内部程序设计、读写器与标签之间的通信设计、车载显示模块设计。系统设置能见度检测仪与阅读器同步,当检测仪检测到能见度小于某一阈值时, 由同步的读写器识别该路段中的标签信息,传送至后台中心,并由后台中心通过无线发射装置将预警信息发布给相应车辆的车载预警装置,从而避免了在能见度较低情况下易发生的事故,实现雾天高速公路的科学安全运行。
关键词:雾天;高速公路;RFID;读写器;天线;报警
Rfid-enabled fog highway vehicles real-time warning system design
Abstract
This paper aiming at the frequent occurrence of traffic accidents in the foggy weather, it was designed on the basis of the UHF distance RFID technology vehicle real-time warning system. RFID technology is a non-contact automatic identification technology, it can read electronic label rapidly, meanwhile it can identify multiple high-speed motion object , adapt to all kinds of environments. In which information acquisition module use this technology to realize the automatic recognition of vehicle identity with information collection, this method makes up the traditional vehicle information collection and realize the many flaws, and real-time warning of vehicle foggy weather. The paper detailed introduction the RFID position, classification and principle etc first. Second on the system hardware and software design. Hardware design includes four parts, they were vehicle detection module, RFID module, the data transmission and processing module, car alarm display device. It analyzed and studied mainly from the equipment selection, performance and application. Radio frequency identification module of the design of two antenna reading, makes identification tag realize wider reading, greatly reduce the cost of installation