Traffic signal control method and system
A control method and technology for traffic signals, which are applied in traffic control systems, traffic control systems for road vehicles, control traffic signals and other directions, and can solve problems such as traffic optimization control
Active Publication Date: 2020-10-30
CHANGCHUN UNIV OF SCI & TECH
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Problems solved by technology
However, the existing methods cannot realize the optimal control of traffic in the region
Method used
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[0055] The purpose of the present invention is to provide a traffic signal control method and system to realize the optimal control of traffic in the area and avoid the defect of local congestion in the area.
[0056] In order to make the above objects, features and advantages of the present invention more comprehensible, the invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0057] Such as figure 1 and 2 Said, the present invention provides a kind of traffic signal control method, and described control method comprises the following steps:
[0058] Step 101, divide the research area into multiple control sub-areas, and determine the intersection of each control sub-area.
[0059] Specifically, such as image 3 Based on rough set theory, the traffic elements are divided into: vehicle layer (Vehicle Layer, VL), fleet layer (Team Layer, TL), section & intersection layer (Section&intersection Layer, SiL...
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The invention discloses a traffic signal control method. The method comprises the steps of dividing a research area into a plurality of control subareas, and determining an intersection of each control subarea; establishing a double-layer optimization model; calculating the phase pressure of each intersection of each control subarea according to the vehicle distribution of the research area; whenthe maximum phase pressure in the phase pressures of all the intersections is greater than an activation phase, determining a traffic signal control scheme when the total output vehicle number of theresearch area at the K moments after the current moment is maximum and the quadratic sum of the difference between the vehicle number of each control subarea at the K moments after the current momentand the optimal vehicle number is minimum by adopting the double-layer optimization model. According to the invention, the research area is divided into a plurality of control subareas, and the boundary signal lamp of each control subarea is optimized, thereby achieving the optimal control of the traffic in the area, and avoiding the defect of local congestion in the area.
Description
technical field [0001] The invention relates to the technical field of traffic intelligent control, in particular to a traffic signal control method and system. Background technique [0002] With the rapid development of urban construction and social economy, urban road congestion is becoming more and more serious. At present, the intelligent traffic signal control system uses signal lights to allocate and guide traffic at intersections, which is one of the important methods to alleviate congestion. According to the system structure, urban traffic signal control can be divided into distributed and centralized control, in which the centralized control system is controlled by the central computing unit. When the control range expands or the parameters increase, the computational complexity of the entire system will increase exponentially. During the optimization process, the real-time performance and reliability may not be highly unified; however, the distributed signal contr...
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IPC IPC(8): G08G1/08G08G1/081
CPCG08G1/08G08G1/081Y02T10/40
Inventor 杨迪李艳雯韩丽苹王鹏邱宁佳王玲
Owner CHANGCHUN UNIV OF SCI & TECH