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Method and system for controlling a signal light

A control method and control system technology, applied in the direction of traffic signal control, etc., can solve the problems of unreasonable time allocation of traffic lights, etc., achieve the effect of optimizing the control method of signal lights, ensuring traffic demand, and reducing the probability of traffic accidents

Active Publication Date: 2022-03-25
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention proposes a control method and system for signal lights to solve the problem of unreasonable traffic light time allocation in the existing signal light control methods

Method used

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  • Method and system for controlling a signal light
  • Method and system for controlling a signal light
  • Method and system for controlling a signal light

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] Example 1, such as figure 1 , figure 2 , Figure 20 A control method for a signal light shown includes the following steps:

[0080] Step 1: Collect data to be processed in real time, where the data to be processed includes the number of pedestrians in the queuing area and the collection of vehicles in the VCA area. The collection of vehicles in the VCA area is CC t ={car 1 , car 2 ... car n}.

[0081] The vehicle set in the VCA area includes all vehicles that meet the preset conditions, where the preset conditions are

[0082] l queue +D b eff

[0083] D. cruise >x 0

[0084] l end > x car > l start

[0085] l queue is the length of the queue of vehicles currently waiting for the green light of the vehicle, D b is the target vehicle from normal driving speed to a de deceleration until the distance traveled when stopping, D cruise is the distance traveled by the target vehicle when the red light of the next vehicle is on, x 0 is the distance betwee...

Embodiment 2

[0108] Embodiment 2: Verification of the signal light control method, the verification steps include:

[0109] 1. Scene description and parameter setting

[0110] The verification of the present invention is to compare the control method of the present invention and the two control modes of the timing signal in a simulation experiment on a pedestrian crosswalk. In order to more comprehensively display the signal light control method of the present invention and get close to the real scene, in addition to the horizontal comparison of the effects of the two control modes, a longitudinal analysis of the results of the algorithm under different traffic flow levels is also carried out. Some key parameters in the simulation are shown in Table 1, and the standard deviation of the random distribution of the parameters is in the brackets. In the experiment, it is assumed that the arrival of pedestrians obeys the Poisson distribution, and the arrival rate is λ. The number of people ru...

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Abstract

The present invention relates to the technical field of traffic signal control, in particular to a control method and system for signal lamps, comprising the following steps: collecting data to be processed in real time; obtaining status information of signal lamps; Time: judge whether the total time saved by pedestrians is greater than the total time delayed by passengers, if so, terminate the current green light of the vehicle, and turn to the yellow light of the vehicle; otherwise, keep the green light of the vehicle. A signal lamp control method and system proposed by the present invention solve the problem of unreasonable time distribution of traffic lights in the existing signal lamp control method.

Description

technical field [0001] The invention relates to the technical field of traffic signal control, in particular to a control method and system for signal lamps. Background technique [0002] The signal devices commonly used in pedestrian crossings include timing signals and pedestrian button systems. Among them, the timing signal system is mainly aimed at reducing motor vehicle delays, and the installation of pedestrian buttons at pedestrian crossings can effectively reduce unnecessary motor vehicle delays. Existing research and technology pay more and more attention to the method of signal control optimization to meet the needs of pedestrians. Zhao et al. proposed an integrated design method to balance the efficiency of vehicles and pedestrians. This method makes full use of the vehicle red light time at downstream intersections and combines crosswalk location selection and signal timing to form a unified signal control model. According to different signal control modes, Wang...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/07
CPCG08G1/07
Inventor 汪勇杰贺晨孙启鹏刘航成倩倩马飞
Owner CHANGAN UNIV
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