Traffic speed prediction method based on traffic flow data fusion and system

A traffic flow and speed prediction technology, which is applied in traffic flow detection, road vehicle traffic control system, traffic control system, etc., can solve problems such as collection errors, affecting traffic speed prediction accuracy, and not considering dynamic changes in spatial relations, etc., to achieve The effect of avoiding time-consuming problems and improving prediction accuracy
CN113808396AActive Publication Date: 2021-12-17ZHEJIANG UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG UNIV OF TECH
Publication Date
2021-12-17

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Abstract

The invention discloses a traffic speed prediction method based on traffic flow data fusion. The method comprises the following steps of: (1) data preprocessing, namely performing data preprocessing on original traffic data, including historical traffic speed data and traffic flow data; (2) designing a traffic speed prediction model based on traffic flow data fusion, wherein the traffic speed prediction model comprises a flow prediction layer, a data fusion layer, a space-time analysis layer and a prediction output layer; (3) generating a sample data set and training the traffic speed prediction model, specifically splitting the traffic data obtained based on the step (2), generating a training data set, a verification data set and a test data set, and training the traffic speed prediction model; and (4) predicting a traffic speed in a future time period, namely based on the prediction model obtained by training in the step (3), predicting the traffic speed in the future time period according to the collected traffic data. The invention further comprises a system for implementing the traffic speed prediction method based on traffic flow data fusion.
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Description

technical field

[0001] The invention relates to a traffic speed prediction method and system for intelligent traffic, which can predict the traffic speed in a certain period of time in the future, and the traffic speed prediction method can be used for traffic control, path planning and traffic guidance. Background technique

[0002] Traffic speed is one of the important parameters reflecting the state of road traffic. Accurate traffic speed prediction helps to optimize traffic control and improve traffic efficiency. Traffic speed prediction is an integral part of intelligent transportation systems. Usually, traffic managers can input the results of traffic speed prediction into the traffic control system to divide the road network, so as to formulate different signal timing schemes, guide traffic travel, and improve the traffic capacity of the entire road network.

[0003] There are three main categories of approaches to the traffic speed prediction problem. The first ty...

Claims

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