摘要
车载多媒体导航终端在智能交通系统中具有重要的作用.通过车载多媒体导航终端,出行用户可以了解到准确实时的路况信息等相关信息,并得到最佳的出行路径.车载终端硬件平台基于OMAP5912嵌入式微处理器,以嵌入式Linux作为操作系统.从ARM端和DSP端介绍了终端软件构架,给出了终端软件的实现流程.其次从主控线程、GPRS通信、数据采集、GPS导航、地图数据库查询、视频及音频7个线程论述了具体实现技术.终端软件操作简单,实际运行效果良好.
Vehicle multimedia navigation terminal plays an importance role in ITS.The drivers can get accurate and real-time traffic information and other related information by vehicle multimedia navigation terminal,and get the best travelling path.The hardware of vehicle terminal is based on OMAP5912 CPU,and the operation system is embedded Linux.The software frame is proposed from ARM and DSP,the flow of terminal software is also given.The implementation techniques of software is described from seven threads including main control,GPRS communication,data acquisition,GPS navigation,the query of map database,the mechanism of video and audio.In practice,the software can run well,operation is simple and function is powerful.
出处
《武汉理工大学学报（交通科学与工程版）》
2010年第3期573-576,共4页
Journal of Wuhan University of Technology（Transportation Science & Engineering）
基金
陕西省交通厅交通科技项目(批准号:08-13K)
河南省交通厅科技计划项目(批准号:2009P245)资助
