基于STM32的GPS车载终端的设计

发布时间：2018-02-01 10:57

本文关键词： 车载终端 STM32 GPS GPRS　出处：《兰州交通大学》2013年硕士论文　论文类型：学位论文

【摘要】：车辆监控系统集地理信息系统技术、定位技术、数据库技术及通信技术于一体，是智能交通管理中重要组成部分。它越来越受到交通运输和安全管理部门的关注，逐渐成为交通管理领域中一个热门研究方向，尤其是在长途客车监控领域，由于司机经常超载超员，为了躲避交管人员检查绕道行驶，导致交通事故频频发生。因此，进行车辆监控系统的研究有着非常重要的工程应用价值及社会经济效益。车载终端是车辆监控系统的重要组成部分，本课题所研究的车载终端来源于上海某公司“车辆监控系统”研发项目，该项目根据长途客运汽车领域的需求进行设计开发，本论文主要是针对项目中车载终端部分功能的设计与开发。论文给出了车载终端系统的总体设计方案，并在此基础上分析了系统的工作原理。对相关的关键技术做了详细介绍。在硬件系统设计方面，分析比较了目前在车载终端应用中比较流行的51、AVR、ARM系列微控制器，采用了近几年新兴的ARM系列微控制器STM32，相对于其它微控制器，STM32具有性价比高、功能强、实时性强等优势，这些特性非常适合应用于车载终端开发领域。以硬件系统的总体设计为基础，详细介绍了电源电路的设计、GPS模块的设计、GPRS模块的设计、图像采集模块设计等。在软件系统设计方面，搭建移植了μC/OS-II实时操作系统，在操作系统的基础上，设计了GPS定位、图像采集、GPRS数据远程传输等功能。实现了GPS定位数据的接收、解析，图像数据的采集，，通过车载终端与监控中心的GPRS远程连接，终端将采集到的定位数据及图像数据打包以TCP/IP协议发送到监控中心。为了实现GPRS在网络不稳定时数据的实时传输，最后设计了SMS辅助发送方式。本文设计的长途客车车载终端实现了GPS定位、图像实时采集、数据传输及SMS短消息发送。在实际测试中表现良好，达到了预期的效果。
[Abstract]:Vehicle monitoring system integrates geographic information system technology, positioning technology, database technology and communication technology. As an important part of intelligent traffic management, it has been paid more and more attention by transportation and safety management departments, and has gradually become a hot research direction in the field of traffic management, especially in the field of long-distance bus monitoring. As the driver often overloaded, in order to avoid traffic controllers to check the bypass, resulting in frequent traffic accidents. The research of vehicle monitoring system has very important engineering application value and social economic benefit. Vehicle terminal is an important part of vehicle monitoring system. The vehicle terminal studied in this paper comes from the R & D project of "vehicle monitoring system" of a company in Shanghai, which is designed and developed according to the requirements of long-distance passenger vehicle field. This paper is mainly aimed at the design and development of the function of the vehicle terminal in the project. The paper gives the overall design of the vehicle terminal system, and on the basis of the analysis of the working principle of the system, the relevant key technologies are introduced in detail. In the hardware system design. This paper analyzes and compares the 51 ARM arm series microcontrollers which are popular in the application of vehicle terminal at present, and adopts the new ARM series microcontroller STM32 in recent years. Compared with other microcontrollers, STM32 has the advantages of high performance-to-price ratio, strong function, strong real-time, and so on. These characteristics are very suitable for application in the field of vehicle terminal development. Based on the overall design of hardware system, this paper introduces the design of power supply circuit and the design of GPS module, GPRS module and image acquisition module in detail. The 渭 C / OS-II real-time operating system is transplanted. On the basis of the operating system, GPS positioning and image acquisition are designed. The functions of remote transmission of GPRS data, such as receiving, analyzing and collecting image data of GPS positioning data, are realized, and the remote connection between GPRS of vehicle terminal and monitoring center is achieved. The terminal sends the collected location data and image data to the monitoring center with TCP/IP protocol in order to realize the real-time transmission of GPRS data when the network is unstable. Finally, the SMS auxiliary sending mode is designed. The long distance bus vehicle terminal designed in this paper realizes GPS positioning, real-time image acquisition, data transmission and SMS short message transmission.
【学位授予单位】：兰州交通大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：P228.4;U495

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