智能运输系统中的中间件技术

分析了智能运输系统存在的问题和重要作用,讨论了ITS电子收费系统的网络拓扑结构。分析了消息队列技术的特点和实用价值,论述了消息队列技术所提供的通信模式及消息队列中间件在ITS中的重要作用。提出了一个适用于ITS的消息中间件的体系结构,用CPN对系统结构和通信协议的正确性和完整性进行了讨论和分析。

Middleware Technology in Intemgent Transportation System

Importance of Intelligent Transportation System(ITS) and its trend are discussed. The networking architecture of ITS is put forwarded and analyzed. Then, the middleware used in ITS is touched on and its key place in ITS is also pointed out. After the design of the intelligent transportation system message queuing middleware(ITS-MQ), its constructs and components are illustrated. Then, this paper focus on the analysis of the process of ITS-MQ and then its features are also refereed. In order to verify and formalize the protocol used in ITS-MQ, we adopt the Colored Petri Net(CPN) to describe it. And the result shows that this technology is very useful to do this. The result also proves that ITS-MQ middleware is applicable for ITS.