基于DM365的3G车载监控终端的设计与实现

发布时间：2018-05-05 13:10

本文选题：车载监控终端 + 3G无线传输　；参考：《浙江工业大学》2015年硕士论文

【摘要】：随着各地智慧交通的不断发展,人们对监控系统,尤其是对车监控终端的需求越来越大,要求也越来越高。目前的车载监控终端,功能单一,远程交互能力比较弱,数据传输质量偏低。为了克服目前市场上车载监控终端所存在的诸多缺陷,并适应当前的网络环境,本文设计开发了一个适用于高速公路的3G车载监控终端。本文从硬件和软件两个方面介绍了车载终端的设计,主要工作总结如下:1、本文分析了车载监控终端的现状,根据现有方案的不足,提出了多功能,易交互,高传输效率的车载监控终端的设计方案,进行了车载监控终端的硬件框架设计和软件框架设计。再根据总的软硬件架构对核心处理器的方案、无线通信方案和流媒体数据的传输协议进行了选择,最终确定了以DM365作为核心处理器,以WCDMA 3G作为无线通信平台,以RTP/RTCP协议作为无线传输协议的方案。2、围绕着TI的DM365最小系统的硬件平台,完成了车载监控终端的外围设备的硬件电路图设计和开发。根据功能划分,分为采集模块,人机交互模块、无线传输模块和电源模块。并根据原理图实现了车载的PCB制作。3、根据提出的软件框架,重点进行了车载监控终端的采集模块和无线传输模块的软件设计。采集模块进行了云台控制、音频数据采集和GPS数据懫集驱动和应用程序的设计,实现了数据采集的功能。无线网络传输模块实现网络拨号接入,并根据无线传输过程中存在的拥塞问题,提出了基于RTP/RTCP协议的自适应拥塞控制机制,进行了RTP传输协议的程序设计和RTCP自适应反馈程序设计,完成了数据的传输,提高了传输性能。经过测试,本车载监控终端,能很好的实现各项功能,满足各项指标,符合设计要求。
[Abstract]:With the continuous development of intelligent transportation in various places, the demand for monitoring system, especially the terminal of vehicle monitoring, is becoming greater and higher. At present, the on-board monitoring terminal has a single function, weak remote interaction ability and low data transmission quality. In order to overcome the defects of on-board monitoring terminals in the market and adapt to the current network environment, this paper designs and develops a 3G vehicle monitoring terminal suitable for freeway. This paper introduces the design of vehicle terminal from two aspects of hardware and software. The main work is summarized as follows: 1. The present situation of vehicle monitoring terminal is analyzed in this paper. The hardware frame and software frame of the vehicle monitoring terminal are designed with high transmission efficiency. Then according to the overall hardware and software architecture, the core processor scheme, wireless communication scheme and streaming media data transmission protocol are selected. Finally, DM365 is chosen as the core processor and WCDMA 3G as the wireless communication platform. Taking the RTP/RTCP protocol as the wireless transmission protocol, the hardware circuit diagram design and development of the peripheral equipment of the vehicle monitoring terminal is completed around the hardware platform of TI's DM365 minimum system. According to the function division, it is divided into acquisition module, human-computer interaction module, wireless transmission module and power module. According to the schematic diagram, the PCB making. 3 is realized. According to the proposed software framework, the software design of the collection module and wireless transmission module of the vehicle monitoring terminal is carried out emphatically. The acquisition module has carried on the cloud head control, the audio frequency data acquisition and the GPS data collection drive and the application program design, has realized the data collection function. Wireless network transmission module realizes network dial-up access. According to the congestion problem in wireless transmission process, an adaptive congestion control mechanism based on RTP/RTCP protocol is proposed. The program design of RTP transmission protocol and RTCP adaptive feedback program are carried out, the data transmission is completed and the transmission performance is improved. After testing, the vehicle monitoring terminal can achieve all functions, meet the requirements of the design.
【学位授予单位】：浙江工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U463.6;U495

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