Based On The Technology Of Network Traffic Information Service System Design And Implementation

Currently, the accelerating pace of urban development, city size is continually expanding, the rapid growth of urban transport demand. Common in many cities there have been traffic congestion, road is not smooth and so on, seriously affected the travel and quality of life of residents. This article is based on Science and Technology Commission of Shanghai, "Shanghai-based traffic information service grid technology demonstration system and its key technology" the launching of related issues. Focuses on grid-based traffic information service platform design and implementation of this system.The system consists of business and client applications of two parts. Which the business side of the main grid-based design and development to complete. Described in this article support platform in the business side include:the deployment of grid management, grid security services, grid services and grid resources, such as a few pieces of content meta-data services. Which focuses on the underlying basis for the deployment of the grid, the grid data fusion, data transmission, security, technology, and grid portals such as module design and function. In the business-side design of the study, we propose a system for the credibility of data and rules-based data fusion method to improve the original grid data fusion approach to solve the heterogeneous data sources and data conflicts. In addition, data transmission, transmission grid GridFTP than the previous model, the system requirements for the proposed Web Services Resource Framework-based transmission of the RTF for the client to provide vast amounts of data transfer a favorable protection. In the client application and implementation of systems, focusing on based on WebGIS/PDA transport demand and display system for research. The client application to invoke a business portal through the end of the grid each service module, and design requirements related to the interface to define different data. And to WebGIS and PDA hand-held terminal to display platform, to achieve to provide users with timely and accurate traffic information purposes.The main goal of this system is grid-based traffic information platform for public and industry users with reliable, accurate and timely traffic information services, to ensure the accuracy of their travel time, ease of people through various means decide whether to travel, when to travel, the manner in which travel from the root to improve transportation system operation efficiency.