摘要： 高速公路图形监控系统从高速公路外场设备获得数据，以实时的，动态的，图形的方式显示高速公路的交通拥挤情况，天气状况，及设备运装是否正常等信息。外场设备主要有气象检测器，车辆检测器，情报板，限速板。数据由通信模块获得，经过控制模块处理，存储后，转发到图形显示模块显示。在显示路面交通状况时，系统采用了曲线拟合法计算出路面形状，采用了Active X 技术以达到动态、实时的显示效果。此外，在进程通信方面采用了Windows Message机制。该系统克服了通常交通监控系统显示死板以及显示延时比较大的困难。

关键词: 高速公路, 实时, 动态, 图形, 曲线拟合

Abstract: The system acquires the data from outer equipment on freeways, then analyse and displays the data dynamically in the graphic style. Here outer equipment including weather detector, car detector, information board, speed-limited board. First data are acquired by communications module, then are transported it to control module where are saved and coped with as well as being transported it to display module, at last display module realtime processing and show it in screen in graphic and dynamic way . While we are displaying the traffic state , how to draw the shape of freeway is a difficulty. Curve Fitting has been taken into account to solve the problem.The system introduce ActiveX technology in order to produce dynamic effect during display of traffic status. Further more, Windows message mechanism is used to realize the communication in processes. The systems solves the problems of monotony and delay during display.

中图分类号: 

• TP277