Multi-intersection traffic signal light optimal control method and system

Abstract

The invention discloses a multi-intersection traffic signal light optimal control system. The system comprises traffic signal lights installed at an intersection, a control system, and an inductor connected with the control system and arranged at each lane; the system further comprises a cloud server in communication connection with the control system, wherein the cloud server is used for dividing a road into a trunk road and a secondary trunk road according to traffic flow, a straight signal light and a right turn signal light arranged on the trunk road are in an ever-green active state, a left-turn signal light of the trunk road and all signal lights of the secondary trunk road are in an ever-red passive state; the ever-green active state and the ever-red passive state are triggered to change by a threshold value of each lane; when the ever-green active state and / or the ever-red passive state are / is triggered to change, the control system is in linkage work according to a preset control signal light. The system disclosed by the invention is simple in implementation, low in improvement cost, capable of controlling the traffic signal lights at multiple intersections, guaranteeing the traffic smoothness of the trunk road, improving the comprehensive capacity of the trunk road and the secondary trunk road, and reducing the waiting, protecting environment and saving energy.

Description

technical field [0001] The invention relates to a method and system for optimal control of traffic signal lamps, in particular to a method and system for optimal control of traffic signal lamps at multiple intersections. Background technique [0002] The optimal control of traffic lights can reduce the waiting congestion of cars, reduce vehicle exhaust emissions, reduce energy consumption, and be environmentally friendly and energy-saving. Traffic extends in all directions now, and a road often has a plurality of crossings, and traffic lights are installed at each crossing, so that the efficiency of passing is very low. At present, the layout of traffic lights at multiple intersections on a road is to calculate the opening time of the front and rear green lights according to the length of the road and the speed of the car, so that the car enters the first green light and passes through the approved speed to the second intersection as a green light. By analogy, such an arran...

AI Technical Summary

Problems solved by technology

Now the traffic extends in all directions, there are often multiple intersections on a road, and traffic lights are installed at each intersection, which makes the efficiency of traffic very low

At present, the layout of traffic lights at multiple intersections on a road is to calculate the opening time of the front and rear green lights according to the length of the road and the speed of the car, so that the car enters the first green light and passes through the approved speed to the second intersection as a green light. And so on, this arrangement mode is referred to as the green cloth mode; its disadvantage is that if the car encounters a red light, it will always be red light, so the traffic volume and traffic efficiency of the car have not changed substantially.

[0003] Most of the existing research on traffic efficiency focuses on solving the traffic efficiency of a single intersection, such as intelligently controlling signal lights (signal lights at a single intersection) according to traffic flow, but there is no technology to control traffic lights at multiple intersections. The present invention thus

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