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Distributed parallel data structure of a traffic network simulation based on object-oriented programming

机译:基于面向对象程序设计的交通网络分布式并行数据结构

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Traffic simulation design ideas based on object-oriented programming and modelling theory are used to analyse the data structure of a simulation system for a traffic network. A traffic network simulation consists of vehicles, links, intersections and signal controls. By defining the class in C++ language, this paper establishes objects of traffic network units, describes the variables and functions of their members in detail and exactly expresses the relationship between nodes and links in a traffic network. It constructs the shared data of the traffic network simulation based on a standard library function of template and object-classes of the traffic network. It uses SQL database technology to access the parallel data structure. Thus it can reduce the occupation of memory resources and increase the speed of data access. Each simulation unit can access the network data expediently. Finally, by simulating a traffic network made of four intersections in Changchun city, results indicate that the simulation speed increases 2.5 times and the error rate is less than 10%. Hence, a distributed parallel data structure based on object-oriented programming is the foundation for improving speed and for benefiting the traffic network simulation.
机译:基于面向对象的程序设计和建模理论的交通仿真设计思想被用于分析交通网络仿真系统的数据结构。交通网络模拟包括车辆,链接,交叉路口和信号控制。通过用C ++语言定义类,本文建立了交通网络单元的对象,详细描述了其成员的变量和功能,并精确表达了交通网络中节点和链接之间的关系。它基于交通网络的模板和对象类的标准库功能构建交通网络模拟的共享数据。它使用SQL数据库技术访问并行数据结构。因此,它可以减少内存资源的占用并提高数据访问的速度。每个仿真单元都可以方便地访问网络数据。最后,通过对长春市四个路口的交通网络进行仿真,结果表明仿真速度提高了2.5倍,错误率小于10%。因此,基于对象编程的分布式并行数据结构是提高速度和使交通网络仿真受益的基础。

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