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Real-time mode control method for traffic signals

A traffic signal and mode control technology, applied in traffic control systems, traffic control systems of road vehicles, instruments, etc., can solve problems such as long mold change and emptying time, reduced efficiency of new modes, and aggravated congestion factors, etc., to improve traffic control Efficiency, reduction of redundant waiting, smooth effect of signal mode switching

Pending Publication Date: 2018-09-14
孟卫平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The conversion between modes needs to complete the corresponding time difference first and at the same time wait for the intersection to be cleared with all red lights in the relevant area. The larger the area, the longer the time for mold change and emptying; this operation takes a long time and causes waiting, and only 1 minute of red lights can cause accumulation. Hundreds of vehicles waiting to enter the control area and traffic congestion at intersections in the area have become an incentive to cause congestion, reducing the effectiveness of the original good new model; this has brought about an industry paradox and trouble: "The response to smoothness has become an exacerbated congestion factor”

Method used

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  • Real-time mode control method for traffic signals

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specific Embodiment 1

[0042] Specific embodiment 1, such as image 3 , showing the progress of the real-time configuration of the road network start-up dredging mode and running for 60 seconds. The real-time mode control operation is as follows:

[0043] S2 calculates and configures the new mode and its transition period according to the mode instruction: 1) The road network starts the default ratio mode, and the instruction mode is to guide the green wave with mixed traffic congestion, and needs to calculate and configure the transition period of the wave: 2) Configure the transition period according to the instruction: instruction mode Congestion-removing guide green wave, configure congestion-reducing mixed green wave Qibo transition period: (S21.1) Because of Qibo, the default ratio mode is that its starting point is arbitrary, and the instruction mode is congested-reducing and guiding green wave, and vehicles in its area are mixed Green wave double different group origin intersection: intersec...

specific Embodiment 2

[0068] Specific embodiment 2, such as Figure 4 , to show the progress of the current road network dredging mode running for 360 seconds and then recovering in real time for 60 seconds. The real-time mode control operation is as follows:

[0069]S2 calculates and configures the new mode and its transition period according to the mode instruction: 1) The road network is currently running the mixed dredging and green wave mode, the command mode restores the default ratio mode, and the transition period category restores, 2) Calculate and configure each intersection cycle compensation and restoration transition Phase: (S22.1) Determine the position of the starting point intersection between the modes according to the mode rules: the starting point intersection (6,0) of the current operation mode congestion relief guidance, and the default ratio mode is synchronized with the starting point; (S22.2) For the previous Calculation of the time difference cycle residual at intersections...

specific Embodiment 3

[0082] Specific embodiment 3, such as Figure 5 , to show the progress of the current road network diversion mode running for 360 seconds and then proceeding to the dual-guidance mode real-time direct switching configuration and running for 135 seconds. The real-time mode control operation is as follows:

[0083] S2 calculates and configures the new mode and its transition period according to the mode instruction: 1) The road network is currently running the mixed dredging green wave mode, the instruction mode dual-guidance mode, and the transition period category is wave, 2) Calculate and configure the wave transition period of each intersection: (S22.1) Determine the position of the starting point intersection between the modes according to the mode rules: the starting point intersection (6,0) of the current operation mode for unblocking guidance, the main flow is to the west of the green wave, and the secondary flow is to the north, and the starting point of this instruction...

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Abstract

The invention relates to the field of a traffic signal mode and discloses a real-time mode control method for traffic signals. The control method includes the following steps of: 1) recognizing a modeinstruction; 2) calculating and configuring a mode time difference and a switching transition period of a mode according to the mode instruction; and 3) operating the switching transition period before new period execution. The real-time mode control method achieves the optimization of a signal mode conversion mode, shortens signal mode conversion time, achieves mode conversion zero-time redundancy waiting and seamless and smooth switching, reduces response time of signals changing with traffic conditions, solves the paradox of "smoothly responding but triggering congestion", and improves thereal-time performance of a signal system. Even if compared with the utilization of time difference period remainder as waiting to perform mode switching, the real-time mode control method also can improve the signal efficiency more than 50%, reduces the redundancy waiting more than 50%, and well reduces the traffic congestion caused by mode conversion.

Description

technical field [0001] The invention relates to the technical field of traffic signal control. Specifically, a traffic signal real-time mode control method. Background technique [0002] At present, there are ratio mode and green wave mode by traffic signal mode. Recently, a variety of special green wave modes with different functions, such as two-dimensional green wave, sparse blocking green wave, double sparse blocking green wave, and mixed green wave, have been proposed. All green wave patterns are obtained by designing the time difference distribution of green waves at each intersection based on the ratio pattern. The conversion between modes needs to complete the corresponding time difference first and at the same time wait for the intersection to be cleared with all red lights in the relevant area. The larger the area, the longer the time for mold change and emptying; this operation takes a long time and causes waiting, and only 1 minute of red lights can cause accum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/081
CPCG08G1/081G08G1/0116G08G1/0145G08G1/087G08G1/052G08G1/0104
Inventor 孟卫平
Owner 孟卫平
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