基于DM8168的列车多媒体平台的设计与实现  

Design and Implementation of DM8168Based Multimedia Platform on the Train

作　　者：施朝辉 刘全利[1] 王伟[1] 

机构地区：[1]大连理工大学控制科学与工程学院,辽宁大连116023

出　　处：《控制工程》2014年第6期913-917,共5页Control Engineering of China

基　　金：国家自然科学基金资助项目(61273037)

摘　　要：针对地铁列车乘客信息系统中多媒体平台多路高清视频输出的需求以及通用计算机在列车多媒体平台应用的缺陷,提出了一种基于TMS320DM8168的嵌入式解决方案。该方案能实现3路1 080 p每秒60帧视频的H.264,MPEG-4等编解码,并在本地以HDMI或VGA接口输出显示。压缩后的高清视频码流通过以太网传输至客室以提供乘客所需信息。重点介绍了该方案的硬件电路设计,包括音视频模块、内存模块、电源模块和外设接口模块。方案使用Linux操作系统,在软件设计部分介绍了开发环境的搭建和软件平台的移植。Muhichannel high - definition display is a growing requirement of multimedia platform in passenger information system on the train and there are some shortages in the application of multimedia platform when using general - purpose computer. Aiming at impro- ving mentioned above, an embedded solution based on TMS320DM8168 is presented in this paper. Three channel 1080p@60fps videos can be encoded or decoded in form of H. 264 or MPEG - 4, and the videos can be displayed through HDMI or VGA interface in local. Compressed video stream will be transmitted to passenger carriage over Ethernet to offer passenger information. Hardware design is fo- cused on in this paper, which contains video processing module, memory module, power module and peripheral interface module. Linux operation system is used, and the setting up of system development environment and the porting of software platform are introduced in software design chapter.

关 键 词：列车多媒体平台 多路全高清视频 TMS320DM8168 硬件电路设计 LINUX 

分 类 号：TP23[自动化与计算机技术—检测技术与自动化装置]