Intelligent Transportation System—Supervise And Control System For Superhighway

With the fast development of social economy and great input of the highway traffic of our country, the construction of the expressway is developing fast and generally adopting more advanced technology and hardware equipment. But contrast sharply with it, the corresponding sets to expressway and auxiliary aspects relative to lag behind, especially software aspects. In order to fully display the characteristics of the expressway, "high-speed, high-efficient, safe, and comfortable", enhance the whole benefits and service level of expressway's network; it needs urgently to accelerate construction paces of all platforms for expressway electromechanical system. This paper has just carried on design and development of the supervisory system platform of the expressway under this prerequisite. Expressway supervisory system software is an extremely complex system. It is formed mainly by such subsystems as disposition management, map monitoring, transportation induction, report forms, etc., each subsystem cooperates, coordinates and finishes the corresponding function each other. The focal point of work of this paper is to control the whole demand analysis of the systems software, control main technology and structure model, the design and realization of map systems software of subsystem as well as database design. We divide the supervisory system platforms into three levels through the analysis: The first level is inserted layer for equipment, as controlling the interface that outfield equipment and central authorities controlling systems software, equipment insert layer offers the bridge of central authorities and outfield of equipment. The running situation of it concerns outfield service quality that equipment is offered for its user directly. The second level is data layer, not only should provide the high level analysis and the processing exchange capacity for the foundation data, but also should provide more high-speed high-performance data processing and exchange for it (for instance, expert diagnose the system and road network data interchange function). The third is the demonstration level, inserted layer inserts the server groups directly, offers the second layer of data to assemble. With respect to...