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Method and device for controlling urban traffic signal

A technology of traffic signals and control methods, which is applied in traffic control systems, traffic control systems for controlling traffic signals, and traffic control systems for road vehicles, etc., can solve problems such as affecting the smooth flow of urban roads, unreasonable control of signal lights, and congestion at road intersections. Real-time estimation, rational control and optimization, the effect of reducing congestion

Active Publication Date: 2018-06-08
北京华道兴科技有限公司
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  • 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 controlling urban traffic signal
  • Method and device for controlling urban traffic signal
  • Method and device for controlling urban traffic signal

Examples

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Comparison scheme
Effect test

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 process 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 flow density and the length of the...

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 a method and device for controlling an urban traffic signal. The method includes: an average vehicle speed of an urban section is estimated according to an obtained vehicle flow density parameter of the urban section; statistics of an average vehicle speed of all urban sections is carried out and an average vehicle speed of the city is estimated; and according to the average vehicle speed of the city and an average vehicle speed at a road intersection interface in all directions, a green time ratio and / or switching cycle of a traffic light at the road intersection is adjusted. Therefore, average speeds of the section and the urban vehicles can be estimated accurately in real time; the reasonable control and optimization of the traffic signal are realized; the vehicle passing speed is increased; and the occurrence rate of the urban road congestion is reduced.

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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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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