智能车载交通信息系统及其动态传播效果分析

智能车载交通信息系统及其动态传播效果分析*

张崎1▲郑昊2张建平2彭红1

(1.北京科技大学自动化学院北京 100083；2.北京科技大学计算机与通信工程学院北京 100083)

摘要为解决集中式道路交通信息系统存在的系统建设资金投入大、建设周期长、数据处理过于集中、应对严重突发灾害能力不足等相关问题，论文对基于车车通信方式的分布式交通信息系统进行了深入研究，改善和构建了基于VANET 实现路网交通拥堵信息自主采集与动态传播功能的新型交通信息系统(IVTIS)模式及相关模型，进而通过交通仿真软件Vissim的二次开发，对交通拥堵信息自主采集、融合、传播及路网拥堵信息自动生成与动态更新模型等，进行了不同车流量及信息发布间隔情形下交通拥堵信息传播效果的综合仿真。通过对路网交通拥堵信息的车辆接收率、最短传播时间及最大传播速率等评价指标的综合分析与比较评价，结果显示IVTIS系统模式及相关模型基本合理，其在路网拥堵信息的自主采集、动态传播及其路网覆盖效果方面显示出较好的整体效果。

关键词车载自组织网；智能车载交通信息系统；交通信息；自主采集；自动传播

中图分类号：U491.2文献标志码：A

收稿日期：2014-05-21修回日期：2014-10-28

基金项目*北京市自然科学(批准号：4122048)资助

通讯作者▲第一作者()简介：张崎(1960—)，博士，副教授.研究方向：智能交通、电子信息、系统工程.E-mail:zhqi@ustb.edu.cn

Analysis of the Dynamic Transmission Effect of

Intelligent Vehicle Traffic Information System

ZHANG QiZENG HaoZHANG JianpingPENG Hong

(1.SchoolofAutomation&ElectricalEngineering,UniversityofScience&Technology

Beijing,Beijing100083,China;2.SchoolofComputer&CommunicationEngineering

UniversityofScience&TechnologyBeijing,Beijing100083,China)

Abstract:The objective of the Intelligent Vehicle Traffic Information System(IVTIS), a new type of traffic information system based on VANET , is to realize the independent collection and dynamic transmission of network traffic congestion information. This system can solve some problems existing in the centralized traffic information system such as expensive system investments, long life-cycles of construction, intensive data processing and so on. To improve the IVTIS model, new models for the acquisition, integration and transmission of traffic congestion information and the automatic generation and dynamic updating of the congestion information were presented in this paper. Besides, by re-developing VISSIM, the simulation analysis and evaluation would work on the receiving rate of traffic congestion information, the shortest transmission time and the maximum transmission speed of the congestion information in different traffic situations. According to the result, the models for IVTIS are effective and run well in the collection, integration and transmission of traffic congestion information, and also have a good road network coverage rate.

Key words:VANET; IVTIS; traffic information; autonomous collection; automatic transmission

0引言

目前，城市路网交通拥堵信息的实时发布主要是由集中式交通信息中心，对各种固定及移动式路况采集设备汇集而来的原始采集信息进行数据分析与融合处理，并由路面大屏幕诱导显示屏、车载显示终端,以及无线交通广播等，向行驶车辆进行路况信息的实时动态发布[1-2]；……