Grid Database's Improvement And Application On The Intelligent Transportation System

The information-based is the main feature of the intelligent transportation system. Share and integrative application of the traffic information are the essential parts of the intelligent transportation system. Therefore, the traffic information share becomes the key of the intelligent transportation system.Because data share is the foundation of information share so the traffic data share occupies an important position in the intelligent transportation system. According to the feature of the traffic information and the current problem of traffic data share, this paper tries to, resolve the problem of the traffic data share with the grid database.The end ,this paper combines the grid database and domain engineering theories to develop the intelligent transportation system.First,this paper makes some improvements on the grid database:implementing registering the database automatically and implementing the function of the the database connection pool and perfecting integration of the data.It is trouble of registering the grid database with the distributed database by hand.This paper use the two classes of obtaining the database registration information and the parser of XML to implement the automatic registering of the database to benefit the registering of the database.This paper provides the support of the database connection pool with the two classes of the database connection pool and its manager,and raises the quality of the grid database.This paper transforms the XML database into the relation database through the XSLTransform class and XSL style, then makes the grid database integration more perfect. In addition, this paper still introduces the step of the database integration in detail to use it easily.Second, this paper combines the grid database and domain engineering modeling to develop the intelligent transportation system.It shows the whole process of the development.At first, it analyzes the intelligent transportation system through the theory of the feature-oriented domain modeling.On the basis of the above step, it presents the architecture of traffic grid.The next, it encapsulates the modules in the above model according to the specification of grid service.At last, this paper presents the example of the speed warning among applications of the driver warning.In a word, the grid database can resolve the share and integration of the traffic data properly. Combining the grid databse with the theories of domain engineering to develop theintelligent transportation system, not only can the traffic data be shared in wide range but also the traffic function can be used in wide range.Then the efficiency of the development of the intelligent transportation system can be raised by far.In addition, the research of this paper is strongly instructional for the application of the grid on the other domain.