Short-time prediction and active control system and method for traffic flow in short-distance interweaving area

Abstract

The invention discloses a short-time prediction and active control system and method for traffic flow in a short-distance interweaving area, and relates to the technical field of intelligent traffic. The system comprises a multi-target radar vehicle real-time position collection subsystem, an edge calculation subsystem, and an entrance ramp signal control host. The multi-target radar vehicle real-time position collection subsystem collects information such as longitude and latitude, instantaneous speed and vehicle body length of a vehicle passing through a radar monitoring area through a multi-target radar device, then performs online extraction on track information based on the edge calculation subsystem, constructs a traffic flow operation analysis model by adopting a space-time diagram convolutional network, and constructs an instantaneous feedback control model according to the analyzed relationship among the traffic flow parameters, so that a data basis is provided for signal control of the entrance ramp, an optimized entrance ramp signal control scheme is obtained, the main line traffic flow operation condition is fully considered, and the overall traffic efficiency of an expressway system can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of intelligent transportation, in particular to a short-term traffic flow prediction and active control system and method in a short-distance weaving area. Background technique [0002] For large cities in my country, the expressway system is the main skeleton of the urban road network, and its traffic operation status determines the overall urban traffic operation situation. Due to the increasing density of the expressway system, short-distance weaving areas inevitably appear, which increasingly become the "intestinal obstruction" of the elevated expressway system, and cause the formation and spread of congestion in the entire expressway system. Active traffic control on short-distance weaving areas of expressways can effectively improve the overall traffic efficiency of the expressway system, and has become the main means of expressway traffic management in major cities. [0003] Active control of traffic...

AI Technical Summary

Problems solved by technology

The advantage of the fixed-cycle control method is that it is simple and easy to implement, but it is not based on the operating conditions of the main line traffic flow, which may easily cause waste or oversaturation of the main line traffic capacity

The control method associated with the traffic flow and saturation of the main line takes into account both the convenience of implementation and the accuracy of control, but it lacks foresight of the traffic flow operation situation, and the formation of traffic control is relatively lagging behind. The control effect on the short-distance weaving area with continuous large flow is not good; therefore, we propose a short-term traffic flow prediction and active control system and method in the short-distance weaving area

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