Automatic unit based self organizing and controlling method for urban traffic signals

A cellular automaton and traffic signal technology, applied in the field of traffic engineering, can solve problems such as large degrees of freedom and uncertainty in urban traffic control, and achieve the effects of easy implementation, simple information processing capabilities, and optimized operating environment.

Inactive Publication Date: 2005-06-22
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

[0006] The purpose of the present invention is to address the deficiencies in the prior art, to provide a self-organized control method for urban traffic signals based on cellular automata, to solve the problems of uncertainty and large degrees of freedom in urban traffic control, and to improve urban traffic control. System performance while meeting the real-time requirements of the system

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  • Automatic unit based self organizing and controlling method for urban traffic signals
  • Automatic unit based self organizing and controlling method for urban traffic signals
  • Automatic unit based self organizing and controlling method for urban traffic signals

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Embodiment Construction

[0034] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0035] The embodiment of the present invention adopts figure 1 The urban transportation partial network shown. The letters in the picture represent the intersections. Will figure 1 The geometric topological relationship between intersections shown is abstracted, and the grid attributes are classified according to different functions into actual intersections, virtual intersections, connecting road sections and non-traffic spaces, etc., expressed as Figure 4 .

[0036] 1. Real-time information collection and processing at each traffic intersection

[0037] Carry out intelligent transformation at each intersection, and add a vehicle detection sensor (such as CCD) at each entry point of the intersection, with an effective range of 100m, to detect the number of vehicles waiting at the entry section of the intersection and the...

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Abstract

A self-organization control method for urban traffic signals based on cellular automata. The urban traffic signal control system is treated as a traffic network, and each intersection is an intelligent body with the function of autonomously collecting and processing information. Dynamic decision-making of traffic signal control at an intersection. Use the attribute matrix to express the state information of the local intersection and its adjacent intersections. The relationship between the connected intersections is described by the relative orientation. The traffic signal control system is established as a virtual network model with the characteristics of cellular automata. Any current intersection in the system According to the traffic information of itself and adjacent intersections, under the drive of control rules, the dynamic transition of intersection signal status is realized, and the self-organized control of traffic signals is completed. The invention realizes the dynamic self-organization and real-time control of urban traffic signals, optimizes the operating environment of urban traffic, and improves the utilization rate of urban roads.

Description

Technical field: [0001] The invention relates to a method for self-organized control of urban traffic signals, in particular to a method for self-organized control of urban traffic signals based on cellular automata, and belongs to the technical field of traffic engineering. Background technique: [0002] Urban traffic signal control is a real-time complex system control problem. Considering the traffic signal control system of the whole city as a network and each intersection as a node in the network, the system has obvious characteristics of integrity, complexity, openness, and large degree of freedom. The complex relationship of signals, traffic flow, road conditions and other factors at adjacent intersections in the system constitutes the macroscopic pattern of urban traffic; the deterioration of the state of local intersections may lead to the crisis of the entire urban traffic system. At the same time, in such a system with a large degree of freedom, there is great un...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/00G08G1/01G08G1/065G08G1/07
Inventor 王安麟魏俊华朱灯林姜涛
Owner SHANGHAI JIAO TONG UNIV
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