基于机动车自动化路考系统的车载通信系统研究与开发

【作者】 黄良希；

【导师】 李定主；

【作者基本信息】 中北大学 ， 计算机应用技术， 2008， 硕士

【摘要】 研究机动车自动化路考系统对于减少考试过程中的人为因素、提高道路考试评判的准确性、客观性和公正性，以及从根本上杜绝交通安全隐患的产生等方面都具有重要的意义。本文对机动车自动化路考系统中的车载通信系统进行了研究，该系统是应用自动车辆定位技术、计算机技术和现代通信技术的高科技综合系统。目前可以使用的定位技术非常多，包括GPS，DR和无线电定位，它们各有优缺点;通信方式也是同样，目前可以选用的通信方式有:无线电集群通信、GSM通信、中国移动的GPRS和中国联通的CDMA。选用什么样的定位技术和通信技术以及如何把这些技术实际应用到车载通信系统中是本论文主要研究的内容。在定位方式选取上，根据车载通信系统的实际特性分析了各种定位方式的精度和适用范围以及使用成本，采用了多个GPS设计了嵌入式车载定位系统以提高精度;在通信方式的选取上，主要根据车载通信系统的“实时性要求高，数据量比较小”的特点选取了GPRS(General Paeket Radio Serviee)通用无线分组服务方式作为本系统的主要通信方式，采用工业级GPRS模块设计了无线数据通信系统;通过每个模块上的标准异步串口可使各模块互相通信或各自与上位PC机通信，从而实现车辆的定位、无线通信等功能。文中详细描述了本系统的设计思想及其特点、车载设备各组成部分的构成和功能，并对硬件和软件的具体实现给予了深入探讨。最后对系统测试结果进行了处理和分析并给出了系统的总结与展望。更多还原

【Abstract】 To study Automobile Driver Road Tests System plays an important role in reducing test process in human factor, enhancing the accuracy, the objectivity and the fairness in tests process, as well as ceases traffic danger aspects. This paper is aimed at Vehicle communication System of Automobile Driver Road Tests System. The system is the application automatic vehicles localization technology, the computer technology and the modern communication high tech system ensemble. At present may use the localization technology are extremely many, including GPS, DR and the radiolocation, they respectively has the characteristic; The communication way also is same, at present may select the communication way includes: The radio colony communication, the GSM communication, China Mobile GPRS and China Unicorn’s CDMA. How selects any type the localization technology and the communication technology as well as in these technology practical application Vehicle communication System is the present paper main research content. In positioning aspect, has analyzed each kind of locate mode precision and the applicable scope as well as the use cost according to the communication objective parameter, the embedded vehicle positioning system is designed by using signal chip and multiple GPS receiver. In communication aspect, mainly "timeliness requests high according to the vehicle communication System vehicles monitoring and the dispatch system, the data quantity quite is small" the characteristic selected GPRS (General Packet Radio Service) the general wireless grouping service way to take this system the main communication way and wireless dada communication system is designed by using industrial GPRS . Every model mentioned above can communicate each other or with PC through UART to realize positioning, wireless communication etc. This paper describes the structures and functions of the vehicle device component and discusses the realization of concrete hardware and software in detail. At last this paper processes the experiment results and gives the conclusion and prospects.更多还原