基于多终端协同的诱导路径生成算法与时空发布策略研究

发布时间：2018-04-16 22:21

本文选题：交通诱导 + 终端协同　；参考：《吉林大学》2017年硕士论文

【摘要】：由于机动车的迅速增长和城市化进程的加快,以交通拥堵为主的一系列交通问题更加严重。交通诱导是智能交通系统的关键技术之一,由于交通诱导能够在城市路网上诱导交通流均衡调配,因此被认为是解决拥堵问题的有效办法。目前国内应用的诱导终端类型很多,如何协同这些诱导信息,如何生成诱导路径以及如何在时空上发布区域诱导信息是亟待解决的问题。本文在分析诱导终端优缺点和适用性和诱导终端互动互联技术的基础上,基于诱导系统的特性和目标提出了多诱导终端协同组合框架,利用AD-HOC/AP/STA三种互通模式的耦合和终端的互发现和互操作技术建立了诱导终端协同机制。在诱导算法方面,通过对经典Dijkstra算法的分析,通过多目标效用函数构建、动态路权赋值和优化搜索范围对经典算法进行改进,改进后的算法通过实例验证说明时效性和随机性得到提升。在诱导信息发布策略方面,通过建立路段受影响程度参数和路段关联参数利用关联矩阵判断来确定诱导信息发布的空间范围。此外,利用三种不同状态下的VMS信息发布时间计算模型耦合建立了诱导信息时间发布范围确定方法。最后,根据区域诱导信息发布时空特性提出了诱导策略的发布流程。
[Abstract]:Due to the rapid growth of motor vehicles and the acceleration of urbanization, a series of traffic problems, mainly traffic jams, are becoming more serious.Traffic guidance is one of the key technologies of Intelligent Transportation system (its). It is considered to be an effective method to solve congestion problem because traffic guidance can guide traffic flow equilibrium allocation in urban road network.At present, there are many kinds of induction terminals in domestic applications. How to cooperate with these induction information, how to generate the induction path and how to release the regional induction information in time and space are urgent problems to be solved.Based on the analysis of the advantages and disadvantages of the induction terminal and the interactive interconnection technology of the induced terminal, this paper proposes a framework of multi-induced terminal cooperative combination based on the characteristics and objectives of the induction system.Based on the coupling of the three interworking modes of AD-HOC/AP/STA and the technology of interdiscovery and interoperation of terminals, the cooperative mechanism of induced terminals is established.In the aspect of induction algorithm, the classical Dijkstra algorithm is improved by analyzing the classical Dijkstra algorithm, constructing the multi-objective utility function, assigning the dynamic path weight and optimizing the search range.The improved algorithm is verified by an example to show that the timeliness and randomness are improved.In the aspect of inducing information release strategy, the spatial range of induced information release is determined by establishing the affected degree parameter and the association parameter of road section by using the correlation matrix to determine the spatial range of the induced information release.In addition, a method for determining the time range of induced information release is established by coupling the VMS information release time calculation model under three different states.Finally, according to the temporal and spatial characteristics of the region induced information release, the process of the guidance strategy is proposed.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U495

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