Traffic signal lamp green light duration determination device, method and system

Abstract

The invention discloses a traffic signal lamp green light duration determination device, method and system, and relates to the field of traffic information perception and control. The method comprisesthe following steps: calculating to obtain the maximum number of detained vehicles of a lane group by utilizing the obtained number of driving-in vehicles and the obtained number of driving-out vehicles; calculating a saturated headway by utilizing the obtained time interval; acquiring speed and position information of the vehicle of the vehicle-mounted unit; comparing to obtain a key traffic flow; and calculating the green light duration by using the key traffic flow, the preset starting loss time and the saturated headway. The state information of all vehicles in each lane of the intersection is obtained in real time by using the geomagnetic vehicle detectors arranged in each lane of the intersection and the vehicle-mounted units arranged on the vehicles; and the key traffic flow of thelane is determined according to the state information, and the green light duration is calculated by using the key traffic flow, the preset starting loss time and the saturated headway so that the problem of low vehicle passing efficiency caused by unreasonable intersection signal lamp timing can be effectively alleviated.

Description

technical field [0001] The present invention relates to the field of traffic information perception and control, in particular to a device, method and system for determining the green duration of a traffic signal light. Background technique [0002] As the number of cars in China continues to increase, the problem of urban traffic congestion is becoming more and more serious. Optimizing the signal control system of single-point intersections and improving the traffic capacity of intersections have become effective means to solve this problem. Single-point intersection signal control refers to the use of traffic lights to allocate the right of way to vehicles and pedestrians operating at isolated intersections. Single-point intersection signal control is based on the traffic signal control model, and through reasonable control of the color change of intersection signal lights, it can alleviate traffic congestion, ensure smooth urban roads, and avoid traffic accidents. At the...

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Problems solved by technology

[0004] The object of the present invention is to provide a device, method and system for determining the duration of a traffic signal light green light, which solves the problem of low vehicle traffic efficiency in the existing method for determining the duration of a signal lamp

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