Control method of multiple intersections based on minimum delay and saturation degree equalization
A technology of multiple intersections and control methods, applied in the field of intelligent traffic control, can solve the problems of high model complexity, increased complexity of coordination optimization models, and inability to establish coordination models in regions.
Inactive Publication Date: 2019-02-19
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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The increase in the number of intersections in the area will cause the complexity of the coordinated optimization model to increase geometrically, and the model complexity of the control sub-area with only 10 intersections is also very high, so it cannot be directly established for the area coordination model
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[0036] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0037] The present invention designs a multi-intersection coordinated control method based on delay minimum and saturation balance. Firstly, the process of vehicle delays caused by signal control between two intersections is analyzed. The state of the vehicle arriving at the downstream intersection is divided into two types: one is that when the vehicle arrives at the downstream intersection, the intersection is in the red light period, which is referred to as the head of the team being blocked; the second is that the red light at the downstream intersection is about to turn on, Some vehicles will be blocked because they did not catch up with the green light, referred to as the rear of the convoy blocked. Aiming at these two situations, an optimization model of arterial phase difference is established. Then solve the e...
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The invention relates to a control method of multiple intersections based on minimum delay and saturation degree equalization, and belongs to the field of intelligent traffic control. The control method establishes a phase difference model between the adjacent intersections by analyzing the state of a queue to reach a downstream intersection, and extends the model to the establishment of the phasedifference model between the intersections for multiple intersection coordination and bidirectional coordination. For the condition that a high saturation degree of partial lanes occurs because the vehicle flow distribution of each road section in a control sub-region is uneven, a green time ratio optimization model of the intersections in a coordinate direction is established by considering theequalization of the saturation degree of the multiple intersections. The control method provided by the invention can perform the optimization of the phase difference and the green time ratio on the multiple intersections of a zigzag path so as to realize the coordination control of traffic signals thereof.
Description
technical field [0001] The invention relates to a multi-intersection control method based on minimum delay and balanced saturation, belonging to the field of intelligent traffic control. Background technique [0002] Before the coordinated control of signals is implemented for multiple intersections, a coordinated control model needs to be established. The increase in the number of intersections in the area will cause the complexity of the coordinated optimization model to increase geometrically, and the model complexity of the control sub-area with only 10 intersections is also very high, so it cannot be directly established for the area coordination model. [0003] The regional road network is a two-dimensional planar structure, so its coordinated control is usually also called "surface control". The single intersection signal control is called "point control", and the coordinated control of urban traffic arteries is generally called "wire control". Since the complexity...
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CPCG08G1/081
Inventor 陈复扬马琳田睿马凯国王奇
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS