Control method for overhead signal based on checkpoint data

A signal control and bayonet technology, applied in the field of intelligent transportation, can solve the problems of poor control flexibility, slow calculation speed and high cost

Active Publication Date: 2017-01-25
ENJOYOR COMPANY LIMITED
View PDF6 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the shortcomings of the existing elevated signal control method, such as slow calculation speed, low robustness, high cost, poor control flexibility, and low real-time performance, the present invention provides a fast calculation speed, robust This is an elevated signal control method base

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Control method for overhead signal based on checkpoint data
  • Control method for overhead signal based on checkpoint data
  • Control method for overhead signal based on checkpoint data

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0076] The present invention will be further described below in conjunction with the accompanying drawings.

[0077] refer to Figure 1 to Figure 10 , an elevated signal control method based on bayonet data. The entrance ramp is the entrance for ground vehicles to enter the elevated road network, also known as the on-ramp, such as figure 1 shown. d is the ramp demand, the unit is veh, w is the queue length, indicating how many vehicles are queuing, l is the traffic flow at the on-ramp, the unit is veh, and jam represents the congestion index. This patent involves historical data and real-time data. For the convenience of distinction, historical data are represented by uppercase letters, and real-time data are represented by lowercase letters. The control interval of the ramp control is T, and one day can be divided into time slices nT, n=1,2,... according to the control period, and k is used to replace it for the convenience of expression, that is, k-1 means (n-1)T, k+ 1 me...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a control method for an overhead signal based on checkpoint data. The method comprises the following steps: 1) acquiring an overhead index change rule, 1.1) calculating the change trend of the overhead blocking index and 1.2) calculating the change trend of the resource required by the ramp; 2) calculating and treating the checkpoint data; 3) calculating the passing requirement of the upper ramp, wherein the ramp passing requirement is the sum with each ground road passing requirement adjacent to the upper ramp and each ground road passing requirement is the product of the total amount of the ground road vehicles multiplying by the proportion of the resource required by the ramp calculated in the step 2); 4) estimating the queuing length: the queuing length is the quantity of the vehicles waiting for entering into the overhead on the upper ramp port; 5) calculating the control rate of the upper ramp; 6) calculating the green ratio of the signal lamp of the ramp. The control method for the overhead signal based on the checkpoint data, provided by the invention, has the advantages of high calculation speed, higher robustness, lower cost, higher control flexibility and high instantaneity.

Description

technical field [0001] The invention belongs to the field of intelligent transportation, and relates to an elevated entrance ramp signal control method which integrates congestion index, congestion index change trend and queuing length. Background technique [0002] With the improvement of residents' living standards, the number of private cars is increasing rapidly, and almost all cities are plagued by traffic congestion to varying degrees. Traffic congestion not only brings environmental pollution, resource consumption and other problems, but also easily causes traffic accidents, which has attracted more and more attention in recent years. There are three ways to solve traffic congestion. The first way is to increase road infrastructure construction. This way is limited by manpower, material resources and urban resources. Generally, this way will not be adopted; the second way is to carry out traffic control , restricting vehicle travel, this method not only brings certai...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G08G1/07
CPCG08G1/075
Inventor 王开红王辉吴越李建元温晓岳蒋伶华
Owner ENJOYOR COMPANY LIMITED
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap