基于HLA的智能交通信息试验平台研究

从智能交通信息平台的概念出发,研究利用已有的智能交通系统资源建立智能交通信息试验平台。首先对比分析了已有的平台体系结构开发方法,即面向过程的开发方法和面向对象的开发方法,两者都已不能适应复杂大系统的开发需求。通过引入计算机建模与仿真领域的HLA（高层体系结构）技术,创造性地提出了基于HLA的体系结构开发方法,结合信息试验平台需求分析,设计了智能交通信息试验平台的逻辑结构。平台分4层来组织,分别是基础数据层、数据库层、应用服务层和用户主体层,在若干接口程序的衔接下,各类联邦成员协同作用以实现信息平台的功能。结合现有的技术设备条件,实现了信息平台的物理连接。平台搭建后运营正常,已接入信息平台的ITS系统包括车载导航系统和城市商用车辆调度系统,并为其他子系统的接入预留了接口。

Research on the ITS Information Testing Platform Based on HLA

ITS Information Testing Platform is attempted to design and construct based on its concept to integrate the existing ITS subsystems.Firstly the existing platform development approaches,including process-oriented approach and object-oriented approach,are compared and analyzed.Both of them could not meet the requirements in complex systems development.Then,the High Level Architecture(HLA) in computer modeling and simulation field is introduced and a new logical system architecture development approach based on HLA is brought forward.According to the requirements analysis,the logical architecture of the ITS Information Testing Platform is designed,which comprised of basic data layer,database layer,application layer and user layer.Linking by some interface processes,series of federates cooperated with each other to realize the functions of the platform.In the end,the testing platform is constructed utilizing the existing technologies and equipment.Preliminary results indicated that the platform operated successfully.The platform has integrated on-board navigation system and urban commercial vehicle dispatching system,and it also arranged some interfaces for other ITS subsystems in advance.