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Urban road crossroad signal switching control method

A control method and signal control technology, which is applied in the traffic control system of road vehicles, traffic control systems, instruments, etc., can solve problems such as difficult, complex signal control at intersections, and difficult to take effect, so as to ensure traffic flow and adaptability and the accuracy of switching, and the effect of improving operating efficiency

Inactive Publication Date: 2019-03-12
NORTH CHINA UNIVERSITY OF TECHNOLOGY
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AI Technical Summary

Problems solved by technology

However, the natural macro-regularity, micro-fluctuation, and randomness of urban road traffic make the intersection signal control complicated and difficult to take effect.
Especially in adapting to micro-fluctuation and randomness, it is even more difficult

Method used

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  • Urban road crossroad signal switching control method
  • Urban road crossroad signal switching control method
  • Urban road crossroad signal switching control method

Examples

Experimental program
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Effect test

Embodiment Construction

[0049] exist figure 1 In , the switching condition of the switching control method is determined by the controllable state index R. When R0, the intersection is in an uncontrollable state , the uncontrollable state control method is adopted at this time.

[0050] exist figure 2 In , the specific control logic is given. First, the intersection signal control is to judge whether the intersection is oversaturated. If the judgment result is no, it is judged as undersaturated. The control enters a controllable transition period, and judges whether the transition period is over. If it is over Then implement the control method of the controllable state; if the intersection is judged to be oversaturated, it is necessary to further judge whether the intersection is in the controllable state, if the judgment result is yes, then it is judged that the state is controllable, the control enters the controllable transition period, and judges Whether the transition period is over, if it is...

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Abstract

The invention provides an urban road crossroad signal switching control method. In the method, the running state of a crossroad is judged through a controllable state index, controllable state controland uncontrollable state control are designed for different controllable states, and switching control is designed through a switching control concept. When the control method is designed, the emptying strategy is considered as the control measure in the controllable state, the minimum number of total queuing vehicles in all phases is set as the basis of a target function design control method inthe uncontrollable state, and the problems caused by urban road traffic fluctuation and randomness are solved.

Description

technical field [0001] The invention belongs to the field of urban road intersection signal control, and in particular relates to a method for switching down schemes in different controllable states of road intersections, which is a signal switching control method for urban road intersections. Background technique [0002] With the continuous increase of car ownership, urban road congestion is becoming more and more serious. As an important part of urban traffic transfer and safe passage, road intersections play an important supporting role. However, urban road traffic naturally has the characteristics of macroscopic regularity, microscopic volatility and randomness, which make the intersection signal control complicated and difficult to take effect. Especially in adapting to micro volatility and randomness, it is even more difficult. Therefore, it is of great significance to design an intersection signal control method based on adapting to the microscopic characteristics ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/081
CPCG08G1/081
Inventor 张立立王力张海波何忠贺
Owner NORTH CHINA UNIVERSITY OF TECHNOLOGY
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