City-level integral traffic signal control method and city-level integral traffic signal control device

A traffic signal and urban traffic technology, applied in the field of city-level overall traffic signal control, can solve problems such as scientific division of cities, and achieve the effect of solving the problem of time-consuming

Inactive Publication Date: 2020-05-22
QINGDAO HISENSE TRANS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned national signal control systems are all determined by manual experience in realizing the signal control of po...

Method used

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  • City-level integral traffic signal control method and city-level integral traffic signal control device
  • City-level integral traffic signal control method and city-level integral traffic signal control device
  • City-level integral traffic signal control method and city-level integral traffic signal control device

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0095] Divide the city area into three types, single-point area, main line area and regional area, and set the urban area area law as L 1 , Law of urban line area L 2 and the changing law of traffic flow in the preset time period L 3 .

[0096] According to the law of the urban area area is L 1 , Law of urban line area L 2 and the changing law of traffic flow in the preset time period L 3 , divide the city to obtain the city area division set U=(U 1 , U 2 ,... U i ), where U i It is one of the three types of single-point area, main line area and regional area.

[0097] If the following conditions are met, then the intersection in the urban area division set is determined as a single-point area.

[0098] 1. According to the law of urban area area, it is L 1 , Law of urban line area L 2 Judgment, the intersection is on a non-trunk road.

[0099] 2. According to the law of urban line area L 2 It is judged that the distance l between the intersection and its adjacent ...

example 2

[0108] Time span means that in urban traffic, there will always be changes in traffic conditions at certain times. For example, in a tourist city, there will be a lot of traffic in the peak tourist season, less traffic in the off-season, more traffic in the New Year and holidays, and more traffic in the morning and evening peaks. There is less traffic at 0:00 at night. Therefore, in determining the urban area division set U=(U 1 , U 2 ,... U i ), according to the change law of traffic flow in the preset time span L 3 Make a judgment, within the preset time span, divide the area U in the urban area division set U i to split or merge.

[0109] 1. Segmentation

[0110] Area segmentation mainly includes the division of two types of areas: trunk lines and areas, among which:

[0111] Segmentation of main line area, analysis of main line coordinating sub-area u=(p 1 ,p 2 ,…p n ) in each intersection p n Whether it is a diversion point (such as a community, a school), if th...

example 3

[0124] In the above, the dynamic urban area division set U`=(U` 1 , U` 2 ,...U` i ), according to the change law of traffic flow in the preset time period L 3 , each area U` in the dynamic urban area division set U` i Carry out scene-based feature extraction to obtain the area traffic feature f s , then f s and control strategy library set J=(j 1 , j 2 ,...j m ) in the control strategy j m Matching, for each slice U` i Recommend a most suitable U` i Area traffic characteristics f s Matching control strategy j m , the preset area traffic feature database is F=(f 1 , f 2 ,... f s ), control strategy j m and area traffic characteristics f s Matching is shown in Table 1 below.

[0125] Table 1

[0126]

[0127]

[0128] Step 205: According to the control strategy corresponding to the traffic characteristics of each block, traffic signal control is performed on the block corresponding to the control strategy.

[0129] In the embodiment of the present invent...

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Abstract

The invention discloses a city-level overall traffic signal control method and a city-level overall traffic signal control device. The method comprises the following steps of classifying the urban districts according to an urban area district rule, an urban line district rule and a traffic flow change rule in a preset time period which are determined according to multi-source urban traffic data toanalyze the overall urban traffic in the spatial dimension; obtaining a city district division set; carrying out time dimension adjustment on the urban district division set; obtaining a dynamic citydistrict division set; extracting the traffic features of each district in the dynamic urban district division set; determining a control strategy corresponding to the traffic characteristics from acontrol strategy library, according to the control strategy, carrying out traffic signal control on the corresponding districts, and optimizing the signal control scheme of the districts by taking thedistricts as basic units, so that urban district division is more accurate, the urban districts do not need to be divided manually, and the overall traffic signal control capability of the city is improved.

Description

technical field [0001] The invention relates to the field of intelligent transportation, in particular to a method and device for city-level overall traffic signal control. Background technique [0002] City-level traffic signal control system is the core component of urban road traffic signal control. At present, many excellent signal control systems have been widely used in the world, and the representative ones are SCOOT in the United Kingdom, SCATS in Australia, and Hicon signal control system in China. Although these signal control systems have the same theoretical system, they all realize the cross signal control of point, line and surface in function. However, the above-mentioned national signal control systems are all determined by manual experience in realizing the signal control of points, lines, and surfaces, and have not scientifically divided various points, lines, and surfaces in the city from the perspective of the city as a whole. Contents of the invention...

Claims

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Application Information

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IPC IPC(8): G08G1/01G08G1/07
CPCG08G1/0125G08G1/0137G08G1/07
Inventor 陈维强马晓龙
Owner QINGDAO HISENSE TRANS TECH
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