Viaduct ramp intelligent signal control method and device based on array radars

Abstract

The invention relates to a viaduct ramp intelligent signal control method and device based on array radars. The viaduct ramp intelligent signal control method comprises the following steps that multiple array radar detection devices are installed on a viaduct, and a signal machine device is arranged in front of an entrance ramp of the viaduct; real-time traffic parameter information of a road section in a detection area is obtained, the average traffic flow density parameter of the road section in the detection area is calculated in real time, and a density-operation index model is established, and the real-time traffic operation index of the road section in the detection area is extracted; the average traffic operation index of the entrance ramp is calculated; the signal conditioning rate of ramp signal control is set, the real-time signal control green-time ratio is calculated, and an operation index-green-time ratio model is established; the signal machine device controls signals of the entrance ramp of the viaduct by calling the operation index-green-time ratio model in a database. By the adoption of the viaduct ramp intelligent signal control method and device based on the array radars, the accuracy of viaduct traffic event detection and the traffic flow operation efficiency can be improved.

Description

technical field [0001] The invention relates to the technical field of intelligent traffic signal control of urban elevated ramps, in particular to an array radar-based intelligent signal control method and device for elevated ramps. Background technique [0002] With the substantial increase in urban car ownership, the contradiction between traffic flow and road supply and demand has become increasingly prominent. The emergence of urban elevated roads has greatly increased the choice of travel routes, but urban elevated roads have brought smooth and fast travel. During peak hours, the elevated parking lot becomes a high-altitude parking lot, which greatly delays the travel of the public and causes a waste of social resources. Most of the traditional methods are to adjust the traffic flow of the elevated road by manually closing the ramp, which delays emergency treatment and wastes labor costs. Scholars at home and abroad have proposed a variety of management control measur...

AI Technical Summary

Problems solved by technology

[0003] The traditional information collection method has certain disadvantages, such as video detection is easy to misjudgment in rainy, snowy, and foggy environments, coil detection is easily damaged by the heavy pressure of large vehicles, and the detection range of microwaves is small, etc.

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