交通运输系统工程与信息 ›› 2017, Vol. 17 ›› Issue (1): 112-119.

• 智能交通系统与信息技术 • 上一篇    下一篇

车联网环境下CACC 车辆通信概率分析模型

陆丽丽1,2,3,郑彭军*1,2,3,任刚2,王炜2   

  1. 1. 宁波大学海运学院,浙江宁波315211;2. 东南大学现代城市交通技术江苏高校协同创新中心,南京210096; 3. 国家道路交通管理工程技术研究中心宁波大学分中心,浙江宁波315211
  • 收稿日期:2016-05-20 修回日期:2016-08-22 出版日期:2017-02-25 发布日期:2017-02-27
  • 作者简介:陆丽丽(1987-),女,浙江上虞人,副研究员.
  • 基金资助:

    国家自然科学基金/National Natural Science Foundation of China (51578149);浙江省自然科学基金/ Natural Science Foundation of Zhejiang Province(LQ17E080007, LY15E080013);宁波市自然科学基金/ Ningbo Natural Science Foundation (2015A610162).

Probability Analysis Model for CACC Vehicle-to-vehicle Communication in Internet Vehicle

LU Li-li1,2,3, ZHENG Peng-jun1,2,3, REN Gang2,WANGWei2   

  1. 1. Faculty of Maritime and Transportation, Ningbo University, Ningbo 315211, Zhejiang, China; 2. Jiangsu Province Collaborative Innovation Center for Modern Urban Traffic Technologies,Southeast University, Nanjing 210096, China; 3. Ningbo University Sub-center, National Traffic Management Engineering & Technology Research Centre, Ningbo 315211, Zhejiang, China
  • Received:2016-05-20 Revised:2016-08-22 Online:2017-02-25 Published:2017-02-27

摘要:

汽车协同式自适应巡航控制(CACC)系统成功应用的前提和关键,是要保证道 路上的CACC车辆能与一定距离范围内的其他车辆进行互联通信.本文依据元胞自动机 的基本思想,将道路离散成均匀一致的格子单元系统,并基于交通流理论和概率论,构建 了车—车通信概率与CACC车辆市场占有率、交通流密度(或占有率)、速度、车头时距,以 及DSRC有效作用距离之间的数学关系模型.通过大量的数值模拟实验和美国加州I880 高速公路交通流数据对模型进行分析测试,表明该模型可分析不同交通流状态下道路上 不同CACC车辆市场占有率,DSRC有效作用距离时的车—车通信概率.本文的研究成果 对于未来促进CACC车辆的推广应用具有重要意义.

关键词: 智能交通, 通信概率, 交通流, CACC车辆, 车联网

Abstract:

In order to successfully apply the cooperative adaptive cruise system to transportation, the key precondition is to ensure that the CACC vehicle on road can communicate with other vehicles within certain distance. The road can be discretized into uniform cells with the cellular automation concept. Based on it and the traffic flow theory, probability theory, a mathematical model is proposed to analyze the relations among the vehicle- to- vehicle communication probability and the market penetration rate of CACC vehicle, the traffic density (or occupancy), traffic speed, the time headway and the effective working distance of DSRC. The proposed model is tested by a large amount of numerical simulation experiments and real world traffic flow data obtained from the I880 freeway in California, USA. The results demonstrate that the our model is capable to estimate the vehicle- to- vehicle communication probability under the various traffic flow condition, different CACC vehicle market penetration rates and different DSRC effective distances, and will be the important basis of the application and propagation of CACC in the near future.

Key words: intelligent transportation, communication probability, traffic flow, CACC vehicle, internet vehicle

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