基于嵌入式Linux的车载信息系统研究

发布时间：2018-01-16 16:19

本文关键词：基于嵌入式Linux的车载信息系统研究　出处：《长安大学》2012年硕士论文　论文类型：学位论文

更多相关文章： 嵌入式技术 Linux GPS GPRS 车载信息

【摘要】：基于嵌入式技术的车载交通信息系统是一个将卫星定位技术、无线通讯技术、地理信息技术与嵌入式技术结合起来的系统。具有小体积、低功率、低成本等优点的车载终端不但可以为驾驶员实时提供交通讯息、车辆位置等信息，并在交通调度管理上起到显著作用。车载交通信息系统进入广泛应用后，将在避免交通事故发生、降低道路拥堵、提高城市道路的使用效率方面起到重要作用。本文针对车载交通信息系统的技术特点与要求提出了将卫星导航、无线通讯技术与嵌入式Linux系统相结合的，即在ARM9平台上移植Linux操作系统并基于此平台实现车载交通信息系统的方案。对于整个方案，，基于嵌入式技术的硬件设计是设计基础，而Linux系统是其软件的开发平台，本文着重从这两个方面进行了研究。论文首先简要介绍了车载交通信息终端的研究背景以及国内外发展现状，并介绍了本文所进行的主要工作；之后根据设计的基本需求设计了交通信息系统的整体架构；开发了以基于ARM9架构S3C2440A微处理器为核心的系统硬件平台，重点介绍了电源电路、串口接口电路、JTAG接口电路、NAND Flash接口电路，网络接口电路、GPS模块接口电路以及GPRS模块接口电路；在对Linux系统进行分析研究后进行了对交叉编译环境的建立以及Bootloader与内核、文件系统的移植；对嵌入式GUI程序设计进行分析的基础上对人机交互界面的开发进行了研究。本文所研发的嵌入式车载交通信息系统经实验调试，结果表明基本实现了设计要求，且运行稳定可靠。
[Abstract]:Vehicle traffic information system based on embedded technology is a system which combines satellite positioning technology, wireless communication technology, geographic information technology and embedded technology. It has small volume and low power. The low-cost vehicle terminal can not only provide real-time traffic information, vehicle location and other information for drivers, but also play a significant role in traffic management. Vehicle traffic information system has been widely used. It will play an important role in avoiding traffic accidents, reducing road congestion and improving the efficiency of urban roads. According to the technical characteristics and requirements of vehicular traffic information system, this paper proposes a combination of satellite navigation, wireless communication technology and embedded Linux system. That is to transplant the Linux operating system on the ARM9 platform and implement the vehicle traffic information system based on this platform. For the whole scheme, the hardware design based on embedded technology is the basis of the design. Linux system is the development platform of its software, this paper focuses on these two aspects. Firstly, the paper briefly introduces the research background of vehicular traffic information terminal and the development situation at home and abroad, and introduces the main work of this paper. Then, according to the basic needs of the design, the overall framework of the traffic information system is designed. The system hardware platform based on ARM9 architecture S3C2440A microprocessor is developed. The power supply circuit and serial port interface circuit are introduced. NAND Flash interface circuit, network interface circuit and GPRS module interface circuit; After analyzing and researching the Linux system, we build the cross-compiling environment and transplant the Bootloader, kernel and file system. Based on the analysis of embedded GUI programming, the development of man-machine interface is studied. The embedded vehicle traffic information system developed in this paper has been tested and debugged. The results show that the design requirements are basically realized and the operation is stable and reliable.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：U495;TP368.1;TP316.81

【参考文献】