The invention discloses a traffic flow density prediction method and system, and the method comprises the following steps: S1, determining a certain place as an original point O, and constructing data factors P (x, y, z, g (x, y, z)) of a plurality of nodes; s2, projecting longitude information and latitude information from a certain place S to an original point O to an XYZ three-dimensional space-time coordinate system, so as to obtain traffic flow density information according to the XYZ three-dimensional space-time coordinate system; and S3, according to the correlation coefficient alpha, obtaining the traffic flow density g (xi, yj, zk) of any place (xi, yj) in the future N minutes by taking zk as a starting moment. According to the method, accurate prediction of the traffic flow density of a certain place in a certain period of time in the future can be realized without a complex model, and meanwhile, the calculation amount is greatly reduced.
本发明公开了一种车流量密度预测方法及系统,其包括如下步骤:S1、确定某地点为原点O,构建若干个节点的数据因子P(x,y,z,g(x,y,z));S2、将某地点S距离原点O的经度信息以及纬度信息投影至XYZ三维时空坐标系中,以根据所述XYZ三维时空坐标系获取车流量密度信息;S3、根据关联系数α获取任一地点(xi,yj)以zk为起始时刻、在未来N分钟内的车流量密度g(xi,yj,zk)。本发明无需复杂模型即可实现对某地点未来某一段时间内车流量密度的精确预测,同时大幅减少计算量。
Traffic flow density prediction method and system
一种车流量密度预测方法及系统
2023-03-21
Patent
Elektronische Ressource
Chinesisch
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung / G06Q Datenverarbeitungssysteme oder -verfahren, besonders angepasst an verwaltungstechnische, geschäftliche, finanzielle oder betriebswirtschaftliche Zwecke, sowie an geschäftsbezogene Überwachungs- oder Voraussagezwecke , DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES |
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