The embodiment of the invention provides a traffic operation state monitoring method and device based on multi-source data fusion. The method comprises the steps of obtaining traffic initial data of at least two data source types of multiple vehicles on a to-be-detected road section in a current period; for each data source type, determining an observation average speed based on the traffic initial data of the current period, determining a data quality influence coefficient according to the average time delay and the average missing rate of the traffic initial data of the current period, determining a speed prediction value and a speed prediction variance of the current period according to the average speed estimation value and the average speed estimation variance of the previous period, and determining an average speed estimation value and an average speed estimation variance according to the speed prediction value, the speed prediction variance, the observation average speed and the data quality influence coefficient of the current period; and fusing the average speed estimation values and the average speed estimation variances of different data source types to obtain a vehicle fusion speed, and determining the traffic operation state of the current period. The accuracy of a traffic operation state monitoring result is improved.
本申请实施例提供了一种基于多源数据融合的交通运行状态监测方法及装置,方法包括:获取待检测路段多个车辆在当前周期至少两种数据源类型的交通初始数据;针对每一数据源类型,基于当前周期交通初始数据确定观测平均速度,根据当前周期交通初始数据的平均延时及平均缺失率,确定数据质量影响系数,根据上一周期平均速度估计值及平均速度估计方差,确定当前周期速度预测值及速度预测方差,根据当前周期速度预测值、速度预测方差、观测平均速度及数据质量影响系数,确定平均速度估计值及平均速度估计方差;对不同数据源类型平均速度估计值及平均速度估计方差融合得到车辆融合速度,确定当前周期交通运行状态,提高交通运行状态监测结果的准确度。
Traffic operation state monitoring method and device based on multi-source data fusion
基于多源数据融合的交通运行状态监测方法及装置
2022-02-25
Patent
Electronic Resource
Chinese
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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