Mobitex无线网在动态交通信息服务系统中的应用  

APPLICATION OF MOBITEX WIRELESS DATA NETWORK IN REAL-TIME TRAFFIC INFORMATION SERVICE SYSTEM

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作  者:周翔[1,2] 荣建[1] 任福田[1] 

机构地区:[1]北京市交通工程重点实验室(北京工业大学),北京100024 [2]中国科学院遥感应用研究所,北京100101

出  处:《计算机应用与软件》2009年第1期69-71,共3页Computer Applications and Software

基  金:北京市科委项目(H030630340320)。

摘  要:针对交通信息服务中用于路径规划和引导的数据得不到及时更新的缺点,提出利用Mobitex无线数据专网建立动态交通信息服务系统,设计的数据通信协议实现了实时交通信息的采集、传输、处理和发布,将GPS探测车采集的实时路况数据传回交通信息服务中心,而处理后的最新动态交通信息则被准确地传送到用户的移动终端。试验表明系统数据接收成功率高,实时交通信息应用的效果显著,为保障交通信息服务的时效性和可靠性提供了有效的解决办法。The improvement on the effectiveness of traffic information service requires the contribution of real-time traffic data which represent the spatio-temporal evolution of traffic flow. However,current static traffic information system can not obtain and update real-time traffic data without the support of communication network. It is submitted that dynamic traffic information system based on wireless data network Mobitex improves the performance of route programming and guidance via reliable data transmission. The designed communication protocols enable traffic information service system to collect, transmit, process and broadcast real-time traffic data. The traffic condition data collected by GPS probe cars are transmitted to traffic information centre,and accordingly up-to-date values of dynamic traffic information are sent to mobile user devices in the vehicles over network. The experiments show that the real-time traffic information system based on Mobitex is efficient with high receiving acceptance rate,which ensures the timeliness and reliability of traffic information service.

关 键 词:交通信息服务系统 实时交通信息 无线网 MOBITEX 

分 类 号:U491.7[交通运输工程—交通运输规划与管理] TN919.2[交通运输工程—道路与铁道工程]

 

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