城市路网交通状态判别及可视化研究

发布时间：2018-03-18 14:41

本文选题：路网交通状态　切入点：马尔可夫　出处：《浙江工业大学》2014年硕士论文　论文类型：学位论文

【摘要】：目前城市交通拥堵情况日趋严重,已经从单一路段或交叉口的拥堵演变成区域路网的拥堵。及时获取路网交通信息,掌握路网交通状态,筛选出对路网运行效率有重要影响的关键交叉口,并对这些关键交叉口优先采取管控措施,可以将交通拥堵状况产生的影响控制在一定范围之内。针对路网交通状态判别问题,本文提出一种基于马尔可夫过程的路网交通状态预测方法,基于PageRank算法,提出一种判别交叉口重要性排名的算法,最后利用ArcGIS Engine,将路网交通信息在地图上进行显示。主要工作如下：1、利用马尔可夫过程预测路网的交通状况。本文通过结合马尔可夫过程,利用其状态只与当前状态有关、与过去状态无关,对路网中交叉口的交通状态进行预测分析。然后参照模糊综合评价法,结合交叉口的历史状态、预测状态及其类型信息,对路网交通状态做出判断,获得表征路网整体运行状态的指标。2、基于PageRank算法对交叉口的重要性排名进行分析。PageRank算法最早应用在网页排序方面,利用网页间的相互连接及影响关系来判断网页的重要性程度。本文通过改进PageRank算法,提出一种基于路网交叉口交通流量及相互影响关系的交叉口重要性排名算法,该算法能够对路网中关键交叉口进行筛选,以便及时对其进行管控,缓解其交通拥堵状况。3、将路网的交通状况及信息进行可视化。本文利用C#作为开发语言,使用ArcGIS Engine作为开发工具,设计了城市路网的交通信息可视化系统。该系统能够在地图上对路网交通信息进行可视化显示,并通过teechart图表功能将交通信息进行形象化地展示。该系统能够实时地对路网交通信息进行判别,方便使用者了解交通信息,同时该系统还具有生成地图图片、地图专题图等功能。
[Abstract]:At present, the situation of urban traffic congestion is becoming more and more serious, which has changed from the congestion of a single section or intersection to the congestion of the regional road network. Get the traffic information of the road network in time and master the traffic state of the road network. The key intersections which have important influence on the efficiency of road network operation are screened out, and these key intersections are given priority control measures. The influence of traffic congestion can be controlled within a certain range, aiming at the problem of road network traffic state discrimination. In this paper, a method of road network traffic state prediction based on Markov process is proposed. Based on PageRank algorithm, an algorithm for judging the rank of intersection importance is proposed. Finally, using ArcGIS engineer, the road network traffic information is displayed on the map. The main work is as follows: 1, using Markov process to predict the traffic condition of road network. The traffic state of intersections in the road network is forecasted and analyzed, which has nothing to do with the past state, and then the traffic state of the road network is judged by referring to the fuzzy comprehensive evaluation method and combining the historical state of the intersection with the forecast state and its type information. The index. 2 is obtained to represent the overall running state of the road network. Based on the PageRank algorithm, the importance rank of intersection is analyzed. PageRank algorithm is first used in web page ranking. In order to judge the importance of web pages, the importance of web pages is judged by the connection and influence relationship between web pages. In this paper, an algorithm for ranking the importance of intersections based on traffic flow and interaction between intersections is proposed by improving the PageRank algorithm. The algorithm can screen key intersections in road network in order to control them in time, alleviate traffic jams. 3, and visualize traffic situation and information of road network. This paper uses C # as the development language. Using ArcGIS Engine as the development tool, the traffic information visualization system of urban road network is designed, which can visualize the road network traffic information on the map. The system can distinguish the road network traffic information in real time, which is convenient for users to understand the traffic information, at the same time, the system also has the ability to generate map pictures. Map thematic map and other functions.
【学位授予单位】：浙江工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U491;TP391.41

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