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Method and system for automatically selecting signal control schemes of intersections

A technology of signal control and automatic selection, applied in traffic signal control, traffic flow detection, etc., can solve problems such as difficulty in satisfying traffic flow in key phases, affecting the actual effect of signal control, and difficulty in ensuring rationality, etc.

Inactive Publication Date: 2019-06-11
NORTH CHINA UNIVERSITY OF TECHNOLOGY
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  • Description
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AI Technical Summary

Problems solved by technology

Taking the flow rate ratio of all vehicle phases as the selection criterion will make it difficult to satisfy the traffic flow of key phases
Therefore, it is difficult to guarantee the rationality of the existing scheme selection, which affects the actual effect of signal control

Method used

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  • Method and system for automatically selecting signal control schemes of intersections
  • Method and system for automatically selecting signal control schemes of intersections
  • Method and system for automatically selecting signal control schemes of intersections

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Embodiment Construction

[0026] In order to make the purpose and technical solutions of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Apparently, the described embodiments are some, not all, embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It should also be understood that terms such as those defined in commonly used dictionaries should be und...

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Abstract

The invention provides a method and a system for automatically selecting signal control schemes of intersections. The method comprises the following steps: calculating saturability of each alternativescheme corresponding to an intersection from an initial stage to all stages according to lane traffic expressed by a formula which is as shown in the description and obtained in real time so as to obtain a key phase expressed by a formula which is as shown in the description of each alternative scheme; and screening saturability deviations of the key phases to obtain an optimal signal control scheme. Through the method, a saturated traffic rate expressed by a formula which is as shown in the description of the key phase expressed by the formula which is as shown in the description of the alternative scheme tau corresponding to the intersection k is added in the saturability deviation calculation process and is used as a consideration factor; traffic demands of the intersections can be better met; the specific method support is provided for automatic selection of the signal control schemes of the intersections.

Description

technical field [0001] The invention relates to the field of traffic control, in particular to a method and system for automatically selecting an intersection signal control scheme. Background technique [0002] With the gradual acceleration of the urbanization process, the problem of urban road traffic has become a common problem faced by major cities in China. As the junction of urban roads, intersections play a very important role in road network and traffic flow. Maximizing the passing capacity of signalized intersections and reducing traffic delays have always been important research topics in the field of traffic engineering. Among many traffic control methods, traffic signal control is one of the most simple, direct and effective methods, and it is also an important part of the advanced traffic management system of intelligent transportation. [0003] An unreasonable intersection signal control scheme will result in low capacity and serious traffic congestion at the...

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Application Information

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IPC IPC(8): G08G1/01G08G1/08
Inventor 吴文祥谭塈元郭伟伟王志建
Owner NORTH CHINA UNIVERSITY OF TECHNOLOGY
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