Control method and device for traffic signal and traffic signal system

Abstract

The invention provides a control method and device for a traffic signal and a traffic signal system. The method comprises the following steps: adjusting a phase difference between a permitting time frame of an upstream intersection and the permitting time frame of a downstream intersection after acquiring the passing time between each vehicle upstream intersection and the adjacent downstream intersection; forecasting an ideal traveling time for driving between the upstream intersection and the downstream intersection of each vehicle under the phase difference according to the passing time; confirming a target phase difference according to the adopted phase difference at the shortest average ideal traveling time of each vehicle; and adopting the target phase difference for respectively controlling the signals at the upstream intersection and the downstream intersection. Under the condition of unchanged permitting duration at the adjacent intersections, the effectiveness of the signal control can be promoted by only changing the phase difference, the passing efficiency is promoted and the technical problems of extensive control and poor control effect of the prior art can be solved.

Description

technical field [0001] The invention relates to the technical field of traffic signal control, in particular to a road signal control method, device and road signal system. Background technique [0002] With the continuous increase of the number of motor vehicles, despite the continuous increase in the area of ​​urban roads and the number of intersections, the traffic efficiency still needs to be improved due to the continuous increase of traffic volume. In the existing road signal control, the signal timing of most road intersections is still in the most basic time-period and fixed-period control mode, and it is impossible to adjust the signal timing according to the traffic flow. Especially in terms of coordinated control, the fixed phase difference is still the main method, without considering the influence of traffic flow on the phase difference. [0003] Although, in the prior art, the road signals at each intersection are dynamically timed according to the current tra...

AI Technical Summary

Problems solved by technology

In the existing road signal control, the signal timing of most road intersections is still in the most basic time-period and fixed-period control mode, and it is impossible to adjust the signal timing according to the traffic flow

Especially in terms of coordinated control, the fixed phase difference is still the main method, without considering the influence of traffic flow on the phase difference

[0003] Although, in the prior art, the road signals at each intersection are dynamically timed according to the current traffic flow at each intersection, but the control logic of this method is insufficient, and the control is relatively extensive. In the actual application process, it is found that the control less effective

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