信息与通信基于ARM的GPSGPRS车载定位系统模型的设计与实现.doc

摘要 进入21世纪以来，我国经济飞速发展，机动车辆的数量不断地增加，造成的交通事故日益增多、交通拥挤等一系列社会急需解决的问题。车载定位终端是嵌入式技术、ARM处理器、GPS技术、GPRS技术、GPRS无线通讯技术相结合的产物，对智能交通的研究和发展具有重要意义，为现代交通运输提供了新颖、可靠、有效的控制和管理途径。 本文先通过对GPS卫星定位理论、卫星数据处理的简要介绍，对GPRS移动通信技术分析以及ARM嵌入式硬件系统、μC/OS-II嵌入式操作系统等计算机技术的不断实践提出一套基于GPRS无线通信技术的车载定位终端的设计方案。车载定位终端将GPS模块传输过来的定位信息提取出来，然后通过GPRS模块将车辆信息发送给车辆监控中心。 本设计采用ARM920T核的S3C2410X处理器作为硬件平台，然后设计相应的外围电路，加上GPS模块电路和GPRS模块电路，构成一个完整的硬件系统。软件设计采用宿主机/目标机的开发模型，在构建好交叉编译环境后，向处理器上移植Bootloader和μC/OS-II操作系统。然后便携多任务应用程序，最后将编译好的操作系统和应用程序下载到硬件平台。 关键字；嵌入式操作系统，ARM，GPS，GPRS，μC/OS-II ABSTRACT with the development of society and the economy, the road accident brings about increases by gradually . Car positioning terminal combining with the dyadic technology , ARM processor , GPS technology , GPRS technology , wireless communication of GPRS ，and having importance to intelligence , has provided new and original , effective controlling and managed approach Brief first by the theory . This article firstly analysis GPS satellite positioning on the theory of a brief introduction of satellite data ,and introduces of the GPRS mobile communication technology, and ARM embedded hardware systems, μC/OS-II embedded operating systems such as computer technology continues to practice a set of wireless communications based on GPRS technology vehicle positioning terminal design. Vehicle Location and GPS module will be transmitted over the terminal location information is extracted, and then through the GPRS module will send information to vehicle traffic control center. The design uses S3C2410X whose core processor is ARM920T as the hardware platform, and then design the appropriate peripheral circuits, coupled circuits ,the GPRS module and GPS module circuit, a complete hardware system. Design of software , a host /target machines development model , build a good cross-compiler environment which transplants bootloader and μC/OS-II operating system to the processor . Finally download compiled operating systems and applications to hardware p