基于嵌入式Linux的GPS研究与设计

发布时间：2018-11-25 07:33

【摘要】：随着科技的迅速发展,以及人们出行的需要,GPS的出现显得越来越重要。特别是对于那些出门在外,对路况又不熟悉的人们,显得尤为重要。 GPS是一种电子手持设备,它通过接受天上的卫星信号,将接受到的数据通过换算,从而得出此设备所在的经度和纬度等信息,并将其以图形界面的方式显示在地图中,使用户可以通过地图确认自己的位置。除此之外,一般的GPS数据中还包括UTC时间,对地速度,定位状态,日期,方位角,信噪比等等其他的常用数据。本文首先阐述课题研究的技术背景、现实意义和研究现状,对嵌入式系统和GPS模块的功能作了分析。并在此基础上给出基于Linux和GPS模块的总体设计方案。然后详细分析了Linux内核细节问题,包括Linux内核的架构,组成部分及相应的作用和设备驱动程序的分析。并在此基础上移植了所需用到的串口驱动,并完成Linux内核的定制,设计了一种基于嵌入式Linux的GPS。该方案处理器选用ARM9系列中的S3C2440芯片,GPS模块采用全新的sirf3代芯片(REB3571),采用Linux作为嵌入式操作系统。在S3C2440处理器上运行Linux操作系统和相应的应用软件,来控制GPS模块完成接受卫星信号,换算并传递到S3C2440处理器。该方案有效实现了定位功能,具有非常好的实时性,为后面实现GPS功能作了基础。最后,本文对所作的工作做了一个总结,指出存在的不足及改进方法,为后续的研究设计作了指导。
[Abstract]:With the rapid development of science and technology, as well as the need for people to travel, the emergence of GPS is becoming more and more important. Especially for those who are out of the house and unfamiliar with the road conditions, it is particularly important. GPS is an electronic handheld device that converts the data it receives by receiving satellite signals from the sky to get information about the latitude and longitude of the device and displays it in a map as a graphical interface. Enables the user to confirm their location on the map. In addition, general GPS data include UTC time, ground velocity, location status, date, azimuth, signal-to-noise ratio and other commonly used data. In this paper, the technical background, practical significance and research status of the research are described, and the functions of embedded system and GPS module are analyzed. On this basis, the overall design scheme based on Linux and GPS module is given. Then, the details of Linux kernel are analyzed in detail, including the architecture, components and functions of the Linux kernel and the analysis of the device driver. On this basis, the serial port driver is transplanted, and the customization of Linux kernel is completed. A kind of GPS. based on embedded Linux is designed. The S3C2440 chip of ARM9 series is used as the processor of this scheme. The GPS module adopts the new sirf3 chip (REB3571) and the Linux as the embedded operating system. The Linux operating system and the corresponding application software are run on the S3C2440 processor to control the GPS module to receive the satellite signal, convert it to the S3C2440 processor and transfer it to the S3C2440 processor. This scheme has realized the localization function effectively, has very good real-time, has made the foundation for the later realization GPS function. Finally, this paper summarizes the work done, points out the shortcomings and improvement methods, and provides guidance for further research design.
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TP368.1;TN967.1

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