基于ARM7的智能交通车载信息采集装置的设计
发布时间：2019-01-26 19:19
【摘要】：在智能交通系统（ITS）中，通过浮动车辆获取城市道路交通流信息是一种可行、高效的办法。可以弥补传统使用路面设施进行交通流信息采集中投资大，建设周期长，而且只能得到有限路段或地点信息的缺点。本文介绍了一种利用GPS技术和GPRS通信技术获取城市道路交通流信息的方法，并设计了智能交通车载终端来完成交通信息的采集和发送。 本文首先介绍了通过浮动车辆获取城市道路交通流信息的基本思想，接着给出了系统的工作原理、结构组成。然后分别用一章分析了GPRS通信技术及组网方式和GPS技术并根据要求讨论了NMEA0813协议及其解析。接着重点介绍了车载终端的硬件和软件设计。在硬件上，采用了基于ARM7核的嵌入式系统方案，，设计了主要部分的电路。在软件上，以开放源码的实时嵌入式操作系统μC/OS-II作为软件开发平台。详细讨论了μC/OS-II在ARM7核的嵌入式系统上的移植和基于μC/OS-II的程序设计方法，并给出了智能交通车载终端中任务的划分和实现方法。 论文最后总结了主要的研究内容和所做的开发工作，对今后工作进行了展望。
[Abstract]:In the intelligent transportation system (ITS), it is a feasible and efficient method to obtain the information of urban road traffic flow by floating vehicles. It can make up for the shortcomings of the traditional use of pavement facilities in traffic flow information collection, such as large investment, long construction period, and only limited road section or location information. This paper introduces a method of obtaining traffic flow information of urban road by using GPS technology and GPRS communication technology, and designs an intelligent traffic vehicle terminal to collect and transmit traffic information. This paper first introduces the basic idea of obtaining the information of urban road traffic flow by floating vehicles, and then gives the working principle and structure of the system. Then, the GPRS communication technology, networking mode and GPS technology are analyzed in a chapter, and the NMEA0813 protocol and its resolution are discussed according to the requirements. Then the hardware and software design of the vehicle terminal is introduced. In hardware, the embedded system scheme based on ARM7 core is adopted, and the main circuit is designed. In software, the open source embedded operating system 渭 C/OS-II is used as the software development platform. The transplant of 渭 C/OS-II on the embedded system of ARM7 core and the programming method based on 渭 C/OS-II are discussed in detail, and the partition and implementation of tasks in the intelligent transportation vehicle terminal are given. Finally, the main research contents and development work are summarized, and the future work is prospected.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：U463.6;TP368.1
本文编号：2415818
[Abstract]:In the intelligent transportation system (ITS), it is a feasible and efficient method to obtain the information of urban road traffic flow by floating vehicles. It can make up for the shortcomings of the traditional use of pavement facilities in traffic flow information collection, such as large investment, long construction period, and only limited road section or location information. This paper introduces a method of obtaining traffic flow information of urban road by using GPS technology and GPRS communication technology, and designs an intelligent traffic vehicle terminal to collect and transmit traffic information. This paper first introduces the basic idea of obtaining the information of urban road traffic flow by floating vehicles, and then gives the working principle and structure of the system. Then, the GPRS communication technology, networking mode and GPS technology are analyzed in a chapter, and the NMEA0813 protocol and its resolution are discussed according to the requirements. Then the hardware and software design of the vehicle terminal is introduced. In hardware, the embedded system scheme based on ARM7 core is adopted, and the main circuit is designed. In software, the open source embedded operating system 渭 C/OS-II is used as the software development platform. The transplant of 渭 C/OS-II on the embedded system of ARM7 core and the programming method based on 渭 C/OS-II are discussed in detail, and the partition and implementation of tasks in the intelligent transportation vehicle terminal are given. Finally, the main research contents and development work are summarized, and the future work is prospected.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：U463.6;TP368.1
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