The invention discloses an expressway traffic flow index unified expression method based on space-time relevance, and the method comprises the specific steps: obtaining expressway traffic flow index data based on an Internet of Things monitoring device; based on the highway network and spatial information, dividing pile ends, and determining a time scale; the method comprises the following steps: simplifying traffic flow index data into a speed-vehicle number model, storing the speed-vehicle number model in different time and space dimensions, and establishing a basic data model; calculating flow and density under different time and space according to a speed-vehicle number model, and performing statistics so as to construct a flow density actual model and an optimization theoretical model; and storing the flow density theoretical model in different spatial dimensions, and mutually verifying the flow density theoretical model with the actual model. According to the method, all basic data are reserved, the space-time relevance between the data and the relation between the data indexes are reflected, the traffic flow data and the indexes are efficiently expressed, the data searching time is shortened, and an effective data layer model is established for data prediction.
本发明公开一种基于时空关联性的高速公路交通流指标统一表达方法,具体步骤包括:基于物联网监控设备,获取高速公路交通流指标数据;基于高速路网及空间信息,划分桩端,确定时间尺度;将交通流指标数据简化为速度‑车辆数模型,并将其存放至不同的时间、空间维度中,建立为基础数据模型;根据速度‑车辆数模型计算不同时空下的流量、密度,并进行统计,以此构建流量密度实际模型和优化理论模型;将流量密度理论模型存放至不同的空间维度中,并与实际模型互相验证。本发明方法保留了所有基础数据,体现了数据间的时空关联性及数据指标间的关系,高效表达了交通流数据及指标,减少了数据的查找时间,并为数据预测建立了有效的数据层模型。
Expressway traffic flow index unified expression method based on space-time relevance
一种基于时空关联性的高速公路交通流指标统一表达方法
24.01.2025
Patent
Elektronische Ressource
Chinesisch
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
Fluctuation in Expressway Traffic Flow
British Library Conference Proceedings | 2005
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