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Method and device for urban traffic signal control

A traffic signal and city technology, applied in the field of intelligent video analysis, can solve the problems affecting the smooth flow of urban roads, congestion at road intersections, unreasonable control of signal lights, etc.

Active Publication Date: 2021-05-04
北京华道兴科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the control of urban roads is relatively simple. Each road crossing controls the change of its own signal lights, and the control of signal lights at some road crossings is unreasonable, which causes road crossings to be congested from time to time, seriously affecting the safety of urban roads. smooth passage

Method used

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  • Method and device for urban traffic signal control
  • Method and device for urban traffic signal control
  • Method and device for urban traffic signal control

Examples

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Embodiment 1

[0094] Embodiment 1 of the present invention provides an urban traffic signal control method, which is used for urban traffic signal control at road intersections, and its flow is as follows figure 1 shown, including the following steps:

[0095] Step S101: Estimate the average vehicle speed of the urban road section according to the acquired traffic density parameters of the vehicles on the urban road section;

[0096] Step S102: Calculate the average vehicle speed of all road sections in the city, and estimate the average vehicle speed in the city;

[0097] Step S103: According to the average speed of vehicles in the city and the average speed of vehicles in all directions at the road intersection, adjust the green signal ratio and / or switching period of the signal light at the road intersection.

[0098] In some optional embodiments, as in step S101, the traffic density parameters of vehicles include traffic density, number of vehicles and road section length. correspondi...

Embodiment 2

[0133] Embodiment 2 of the present invention provides an urban traffic signal control method, which is further improved on the basis of Embodiment 1, and acts on the signal lights at the intersection of the urban road and the intersection of adjacent roads. The flow is as follows Figure 7 As shown, the specific steps are as follows:

[0134] Step S301: Estimate the average vehicle speed of the urban road section according to the acquired traffic density parameters of the vehicles on the urban road section;

[0135] Step S302: Calculate the average vehicle speed of all road sections in the city, and estimate the average vehicle speed in the city;

[0136] Step S303: According to the average speed of vehicles in the city and the average speed of vehicles in all directions at the road intersection, adjust the green signal ratio and / or switching period of the signal light at the road intersection.

[0137] Step S304: According to the vehicle traffic density and road section leng...

Embodiment 3

[0168] Based on the same inventive concept, the embodiment of the present invention also provides a device, the structure of which is as follows Figure 13 As shown, it includes: a first estimation module 601 , a second estimation module 602 and an adjustment module 603 .

[0169] The first estimating module 601 is configured to estimate the average vehicle speed of the urban road segment according to the acquired traffic density parameters of the vehicles on the urban road segment;

[0170] The second estimation module 602 is used to count the average vehicle speed of all road sections in the city, and estimate the average vehicle speed in the city;

[0171] The adjustment module 603 is configured to adjust the green signal ratio and / or the switching cycle of the signal lights at the road intersection according to the average speed of vehicles in the city and the average speed of vehicles in all directions at the road intersection.

[0172] In some optional embodiments, the ...

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Abstract

The invention discloses an urban traffic signal control method and device. The method includes: estimating the average vehicle speed of the urban road section according to the obtained traffic density parameters of the vehicles in the urban road section; counting the average vehicle speed of all road sections in the city, estimating the average vehicle speed of the city; according to the average vehicle speed of the city and The average speed of vehicles in each direction at the road intersection, and adjust the green signal ratio and / or switching period of the signal light at the road intersection. It can accurately and real-time estimate the average speed of road sections and urban vehicles, realize reasonable control and optimization of traffic signals, increase the speed of vehicles, and reduce the incidence of urban road congestion.

Description

technical field [0001] The invention relates to the field of intelligent video analysis, in particular to an urban traffic signal control method and device. Background technique [0002] Transportation is the lifeblood of urban economic activities and plays a very important role in the development of urban economy and the improvement of people's living standards. While the automobile industry has brought various conveniences to people, it has also brought a series of confusing problems, such as environmental pollution, traffic congestion, frequent traffic accidents, etc., which have brought great losses to people's lives and property . Urban traffic problems are an important factor that plagues urban development and restricts urban economic construction. People's awareness of effective traffic control is becoming stronger and stronger. [0003] According to relevant information, from 1978 to 1995, the growth rate of urban vehicle ownership in my country was 80 times that o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/08G08G1/01
CPCG08G1/0125G08G1/08
Inventor 宋景选曹黎俊
Owner 北京华道兴科技有限公司
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