A Phase-Signal Synthetic Optimization Method of Bidirectional Green Wave on Trunk Lines

A two-way green wave and optimization method technology, which is applied in the direction of traffic signal control, road vehicle traffic control systems, instruments, etc., can solve problems such as traffic flow disturbance, inaccurate real-time flow data, unfavorable traffic control strategy schemes, etc., and achieve operational Process standardization, controllable division effects, and improved practicality

Active Publication Date: 2021-04-16
CENT SOUTH UNIV
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Problems solved by technology

However, the above coordinated control systems are all based on adaptive control methods, which are highly dependent on detection coils and their hardware facilities
Considering that the failure rate of the coils used to detect vehicles in major cities in my country is as high as 30%, it is easy to cause inaccurate real-time traffic data, which is not conducive to the coordinated control system to formulate appropriate traffic control strategies.
In addition, the adaptive control method may cause large disturbances to the traffic flow due to its frequent switching strategies, and the effect on improving traffic conditions may be "counterproductive". Therefore, the above systems are not universally applicable to the coordinated control of urban arterial roads in my country

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  • A Phase-Signal Synthetic Optimization Method of Bidirectional Green Wave on Trunk Lines
  • A Phase-Signal Synthetic Optimization Method of Bidirectional Green Wave on Trunk Lines
  • A Phase-Signal Synthetic Optimization Method of Bidirectional Green Wave on Trunk Lines

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[0051] A phase-signal comprehensive optimization method for bidirectional green waves on trunk lines, comprising: phase-signal optimization under multi-group traffic structures, characterized in that:

[0052] The phase-signal optimization under the multi-group flow structure is composed of multiple single-group flow structure phase-signal optimizations, and the phase-signal optimization under the single-group flow structure is composed of the following steps:

[0053] 1) Clarify the channelization form, traffic flow structure and distance between adjacent intersections at each intersection on the arterial line;

[0054] 2) After determining the key intersection, given the signal period, calculate the required green light duration and theoretical green wave width for each flow direction at each intersection;

[0055] 3) Establish a space-time coordinate system, draw a theoretical green wave map and construct a signal scheme to establish a digital flow-time-signal matrix;

[0...

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Abstract

The present invention provides a phase-signal comprehensive optimization method for two-way green waves on trunk lines, comprising the following steps: establishing a phase-signal comprehensive optimization model aiming at increasing the width of green waves and reducing the average vehicle delay, the model is based on the intersection of trunk lines The three major factors of channelization mode, intersection spacing and traffic flow structure are associated with the arterial traffic organization, phase scheme and signal scheme, and a single-group traffic structure optimization method and a multi-group traffic structure optimization method are given. The phase scheme sensitivity and signal Parameter robustness selects the best phase-signal control scheme, and finally updates the control parameters for the traffic structure whose evaluation value does not meet the β measure, and regroups; the urban arterial road coordination control optimization method based on the multi-period control scheme in the present invention fully considers multiple Group traffic structure, traffic organization, phase plan and pedestrian crossing factors, accurately handle traffic demand at each time period, improve operating efficiency and reduce traffic costs.

Description

technical field [0001] The present invention relates to the technical field of traffic control and management, and more specifically, relates to an optimization method for coordinated control of urban arterial roads based on a multi-period control scheme. Background technique [0002] Urban arterial lines are the main arteries of urban road traffic networks, with the characteristics of long mileage, large service traffic volume, and high speed. [0003] In terms of coordinated control, some large and medium-sized cities in my country have also tried, and have introduced advanced intelligent traffic control management systems, such as Beijing, Chengdu and Dalian introduced the British SCOOT system; Shenyang, Shanghai, Guangzhou introduced the Australian SCATS system; Shenzhen Introduce Japan's KYOSAN system, etc. However, the above-mentioned coordinated control systems are all based on adaptive control methods, which are highly dependent on detection coils and their hardware ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/08G08G1/081
CPCG08G1/08G08G1/081
Inventor 黎茂盛黎昉王永亮史峰
Owner CENT SOUTH UNIV
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