Method and device for controlling time length of traffic lights at crossroad

A technology of intersection and control method, applied in the field of control, can solve problems such as poor flexibility, and achieve the effect of increasing traffic efficiency

Inactive Publication Date: 2017-07-04
BEIJING QIHOO TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for controlling the duration of traffic lights at crossroads to solve the problem of poor flexibility in the method for controlling traffic lights in the prior art

Method used

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  • Method and device for controlling time length of traffic lights at crossroad
  • Method and device for controlling time length of traffic lights at crossroad
  • Method and device for controlling time length of traffic lights at crossroad

Examples

Experimental program
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Embodiment 1

[0035] figure 1 The flow chart of the method for controlling the duration of traffic lights at crossroads provided by the embodiment of the present invention. The executive body of this embodiment is a controller, which is mainly used to control the duration of traffic lights at intersections. For example, the controller can be set Roadside equipment on the side of the road that can communicate with vehicles traveling on the road. Such as figure 1 As shown, the time length control method of the traffic lights at the crossroads includes:

[0036] Step 101, obtain the first traffic flow information of the current red light lane at the intersection, and obtain the first green light time T according to the first traffic flow information, wherein the traffic flow information includes the number, type and length information of vehicles.

[0037] The red light lane refers to a lane currently displaying a red light, and the vehicle length information refers to the length information...

Embodiment 2

[0048] This embodiment is a further supplementary description to the above embodiment, figure 2 A flow chart of a method for controlling the duration of traffic lights at crossroads provided by another embodiment of the present invention, such as figure 2 As shown, the method includes:

[0049] Obtain the first traffic flow information of the current red light lane at the intersection, wherein the traffic flow information includes the number, type and length information of the vehicles, and obtain the first green light time according to the first traffic flow information, specifically, including:

[0050] Step 2011, acquiring traffic flow information of the first sub-lane and the second sub-lane in the red light lane, wherein the second sub-lane is in the opposite direction to the first sub-lane.

[0051] Specifically, the first sub-lane and the second sub-lane are the lanes on both sides of the traffic light. For example, the red light lane is a north-south lane, so the tr...

Embodiment 3

[0067] This embodiment is a further explanation to the above-mentioned embodiment, image 3 A flow chart of a method for controlling the duration of traffic lights at crossroads provided by another embodiment of the present invention, such as image 3 As shown, the method includes:

[0068] Step 301, obtain the first traffic flow information of the current red light lane at the intersection, and obtain the first green light time according to the first traffic flow information, wherein the traffic flow information includes the number, type and length of vehicles.

[0069] Wherein, the specific execution process of step 301 is the same as step 2011 to step 2013 in the above embodiment, and will not be repeated here.

[0070] Step 302, judging whether the first green light time is greater than a preset fixed green light time;

[0071] If the result is yes, that is, when the first green light time is greater than the preset fixed green light time, then obtain the second traffic ...

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Abstract

The invention discloses a method and device for controlling the time length of traffic lights at a crossroad. The method comprises the steps of acquiring first traffic flow information of a red light lane, acquiring first green light time according to the first traffic flow information, acquiring second traffic flow information of the current green light lane in the last red light time length if the first green light time is greater than preset fixed green light time, and acquiring the equivalent pedestrian flow of the red light lane and the green light lane; judging whether the equivalent pedestrian flow of the red light lane is greater than the equivalent pedestrian flow of the green light lane or not, if the equivalent pedestrian flow of the red light lane is greater than the equivalent pedestrian flow of the green light lane and the difference of the equivalent pedestrian flow of the red light lane and the equivalent pedestrian flow of the green light lane is greater than or equal to a first preset threshold, controlling the next green light time length of the red light lane to be first green light time, and controlling the current green light time length of the green light lane to be unchanged. According to the method and device disclosed by the invention, the traffic light time of the crossroad can be changed flexibly, and pedestrian flow conditions of the crossroad are comprehensively considered, so that more people can be enabled to pass, and the traffic efficiency is increased.

Description

technical field [0001] The invention relates to a control method, in particular to a method and device for controlling the duration of traffic lights at crossroads. Background technique [0002] The intersections with relatively large traffic flow in big cities in my country are basically fixed-period signal control methods, and fixed green, yellow, and red light times are set at each intersection. The time of these traffic lights is a fixed time determined according to the statistical results of historical traffic flow. [0003] As more and more people choose to travel by car, the traffic flow situation becomes more and more complicated, and the traffic flow at the same intersection varies greatly in different periods of time. Therefore, the use of fixed traffic light time obviously cannot meet the needs of complex and changing vehicles. Flow rate, the method flexibility of the control traffic light of prior art is relatively poor. Contents of the invention [0004] The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/08
CPCG08G1/08
Inventor 裴洪文
Owner BEIJING QIHOO TECH CO LTD
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