【作者】 邹明霞；

【导师】 沈吟东；

【作者基本信息】 华中科技大学 ， 系统工程， 2008， 硕士

【摘要】 随着经济的飞速发展,汽车越来越多,城市的道路建设远赶不上城市化进程的加快,交通拥堵已成为制约城市发展的重要问题之一。城市公共交通覆盖面广、经济快捷。为了缓解交通压力,必须大力发展公共交通,提高公交服务水平,鼓励和吸引市民选择乘坐公交出行,从而改善交通状况。为此我们设计开发了基于Web的公交查询系统,为乘客出行提供详细全面的信息,进一步提高公交的服务水平。本文从乘客的角度出发,研究了乘客的出行行为,对公交查询系统进行了需求分析;从系统开发环境、系统目标、设计流程、功能设计、模块设计和数据库设计六个方面进行系统的总体设计;通过抽象公交网络中的站点和线路,建立了公交网络数学模型,讨论了公交网络的最优路径算法,并在此基础上详细介绍了在三种不同目标情况下适合公交查询的最优路径算法;在需求分析、总体设计和基于网络路径最优的公交查询算法探讨基础上,对查询系统进行了详细设计,并成功将三种网络路径算法应用于系统的换乘查询中,系统还实现了线网维护、线路查询、站点查询和标志性地点查询的功能,最后利用武汉市25条线路和400个站点的实验数据,对系统的功能进行了测试,并对公交网络路径的算法时间和查询结果进行了分析。实验证明该系统界面友好、功能完善。更多还原

【Abstract】 With the rapid economic development, there are more and more cars. The speed of cities’road construction is far behind the speed of the process of urbanization. Thus, traffic jams have become one of constraints which affect the development of cities. And public transportation has the advantages of wide coverage, economy and celerity. Therefore, in order to relieve the pressure of the traffic, it is necessary to develop public transportation, promote the level of public transport services, encourage and attract citizens to travel by public transportation. Based on the purpose above, we develop a web-based public transportation system, which provides detailed and comprehensive information for passengers and improves the level of public transport services.this report covers the following aspects: requirement analysis of bus query system through research on passengers’travel activities; general design on system development environment, system objects, design process, functional design ,module design and database design; building mathematic models of bus network through abstracting the sites and lines in the bus network, based on which introduces optimal path algorithms of bus query suitable for three different situation; detail design of query system on requirement analysis, general design and query algorithms of bus network which bases on best network path ; applying three network path algorithms to transfer query of the system successfully; achieving the functions of maintenance of net line, line query, site query and query of landmark locations; testing the system’s functions with the experiment statistics of 25 lines and 400 sites in WuHan; analysis of the time and results of bus network path algorithm. And the experiment has justified that the system is user-friendly and the functions of the system are perfect.更多还原