张永生,文 科

摘 要:近年来,随着经济的持续发展,对公交运输也提出更高的要求。传统的公交报站器须由司机操控工作,考虑公交系统的安全,目前迫切需要智能化、自动化的公交报站系统。GPS及GPRS技术的应用使公交报站系统实现了高度的整合,改变了传统的手动报站方式,解决了目前国内现有的公交车内信息更新方式落后、不能监控调度等弊端。结合GPS定位,对车辆的状态信息(位置、速度等)进行实时采集及分析,当车辆到达预定位置时,实现公交车的自动报站功能;通过GPRS网络,将公交车的状态信息及时传输到公交监控调度中心,然后通过中心上位机软件的操作,实现对公交车的监控调度、信息更新的功能。采用SD卡存储多条线路信息及MP3语音文件,便于公交车更换公交线路,同时实现高品质语音信息的播放。

关键词:GPS;GPRS;SD卡;MP3;自动报站;信息更新;监控调度

中图分类号:TN41,TP33文献标识码:B

文章编号:1004-373X(2009)19-212-03

Design of Automatic Station Report System for Bus Based on GPS/GPRS

ZHANG Yongsheng,WEN Ke

(Guangzhou Ropen Technology Co.Ltd.,Guangzhou,510060,China)

Abstract:In recent years,with sustained economic development of public transport also its higher requirements are put forward.Traditional bus reporter must be manipulated by the driver,considering the safety of public transportation system,there is an urgent need for intelligent,automatic station report system for bus.GPS and GPRS technology for application enable the bus station report system a high degree of integration,changing the traditional manual-announce way,the current way of updating information is solved and the scheduling and other defects can′t be monitored.Combining GPS positioning technology,the bus status information (location,speed,etc.) in real-time acquisition and analysis,when the bus is scheduled to arrive at the location,the automatic station report function is realized.Through the GPRS network,necessary bus status information should be transmitted to the bus monitor dispatching center timely,and then through the center of the operation of PC software,to achieve the function of the monitoring,scheduling and updating information.SD card is used to memorize the information of a number of lines and MP3 audio files,it is facilitated to replace bus lines,and at the same time high-quality voice information play is realized.

Keywords:GPS;GPRS;SD card;MP3;automatic station report;information updating;monitoring and dispatching

0 引 言

目前,国内公交车报站的方式多采用手动报站,但是因为司机需要在保证安全驾驶的前提下进行报站,所以经常出现错报、漏报、安全隐患等一系列问题。采用GPS全球定位系统进行自动报站使这一难题迎刃而解,不需要人工干预,大大减轻了司机的工作量,也同时提高了车辆运行的安全性,促进公交系统的现代化进程[1]。

现阶段,公交车内信息屏多通过有线方式获得新闻、天气预报、广告等信息,也可以同步显示报站信息。但是有一个不可避免的问题,那就是由于没有整合GPRS无线通讯功能,所以维护起来比较麻烦,如果需要更换广告内容,就必须派出大量的人员,对需要更改广告内容的公交车内信息屏一一更改,浪费了大量的人力物力。……