基于GPS的智能公共交通接收终端设计与实现

发布时间：2018-06-12 02:50

本文选题：智能公共交通 + 地面数字机顶盒　；参考：《大连理工大学》2013年硕士论文

【摘要】：当前,随着汽车保有量逐年增长,城市交通日益拥堵,智能公交系统的出现及发展壮大是社会需求发展和城市交通发展的必然趋势,不仅可以满足广大人民群众日益增长的物质、文化需求,还可提高交通效率,缓解交通拥堵,为城市的可持续发展做出贡献。本文以开发设计的一款满足国家标准GB20600-2006的地面数字接收机顶盒、电源盒和GPS外挂盒组成的简单智能公共交通接收终端为例,对地面数字电视机顶盒的主要技术原理进行了分析,探讨了该接收终端的整个设计过程。文中在简要描述数字电视的传输标准以及地面数字电视接收机的工作原理的基础上,阐述了地面数字机顶盒、电源盒及GPS外挂盒的各个组成部分,重点研究电源盒电源部分和音频功放部分,机顶盒信源接收调制和解码部分,GPS外挂盒中供电电路和GPS接收电路部分的设计。同时对安装、实测过程中遇到的问题进行了改进,并进行实验测试分析,通过实验验证了改进方案的正确性。本文中所设计的地面数字机顶盒和GPS外挂盒,通过各种测试,各项主要性能指标都达到了国家标准,取得了良好的效果。
[Abstract]:At present, with the increase of vehicle ownership and traffic congestion, the emergence and development of intelligent public transport system is the inevitable trend of social demand development and urban traffic development. It can not only meet the increasing material and cultural needs of the broad masses of people, but also improve traffic efficiency and ease traffic congestion. In this paper, a simple intelligent public transport receiving terminal, which meets the national standard GB20600-2006, is developed and designed to meet the national standard GB20600-2006, which is composed of a simple intelligent public transport receiver, a power supply box and a GPS external box. This paper analyzes the main technical principle of the terrestrial digital TV set-top box, and discusses the whole design process of the receiving terminal. On the basis of briefly describing the transmission standard of digital TV and the working principle of terrestrial digital TV receiver, this paper expounds the components of ground digital set-top box, power box and GPS external box. Emphasis is placed on the design of power supply and audio power amplifier in the power supply box, modulation, modulation and decoding of the source of the set-top box, and the design of the power supply circuit and the GPS receiving circuit in the GPS external box. At the same time, the problems encountered in the course of installation and measurement are improved, and the correctness of the improved scheme is verified by experiments. The ground digital set-top box and GPS external box designed in this paper have passed various tests. Each main performance index has reached the national standard, has obtained the good effect.
【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：P228.4;U495

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