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A method and device for controlling a signal light at an oversaturated intersection
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A technology for signal light control and signal light timing, which is applied in the control of traffic signals and other directions, and can solve problems such as the inability to alleviate congestion.
Active Publication Date: 2017-11-10
QINGDAO HISENSE TRANS TECH
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[0006] Embodiments of the present invention provide a method and device for controlling signal lights at oversaturated intersections, which are used to solve the problem that the traffic signal coordination system in the prior art cannot alleviate the degree of congestion in the control of oversaturated intersections
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Embodiment 1
[0093] Embodiment 1 of the present invention provides an oversaturated intersection signal control method, such as figure 1 As shown, it mainly includes the following steps:
[0094] Step 101, obtaining detection data of the controlled intersection, and determining whether the controlled intersection is in an oversaturated state according to the detection data;
[0095] Step 102, if it is in an oversaturated state, then determine the first queue leader of the controlled intersection according to the detection data;
[0096] Step 103, according to the first queue leader, the second queue leader, the second flow rate, the expected traffic capacity, the objective function and the constraint conditions of each phase of the controlled intersection, determine the timing parameters of the signal lights at the controlled intersection; wherein, The second queuing length value is an expected value that does not exceed the queuing length threshold of each phase of the controlled interse...
Embodiment 2
[0180] An embodiment of the present invention provides an oversaturated intersection signal light control device, such as Figure 5 As shown, it includes: a judgment unit 21 , a determination unit 22 and a timing parameter determination unit 23 .
[0181] A judging unit 21, configured to obtain detection data of the controlled intersection, and determine whether the controlled intersection is in an oversaturated state according to the detection data;
[0182] A determining unit 22, configured to determine the first queue length of the controlled intersection according to the detection data if it is in an oversaturated state;
[0183] The timing parameter determination unit 23 is used to determine the timing parameters of the signal lights at the controlled intersection according to the first queue leader, the second queue leader, the second flow rate, the expected traffic capacity and the constraint conditions of each phase of the controlled intersection ; Wherein, the second...
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Abstract
The invention discloses a supersaturated intersection signal lamp control method and device. According to the technical scheme, the supersaturated intersection signal lamp control method mainly includes the steps of obtaining detection data of controlled intersections and determining whether the controlled intersections are in the supersaturated state or not according to the detection data; if the controlled intersections are in the supersaturated state, determining first queuing lengths of the controlled intersections according to the detection data; determining timing parameters of controlled intersection signal lamps according to first queuing lengths, second queuing lengths, second flows, the expected traffic capacity and constraint conditions of phases of the controlled intersections, wherein second queuing length values of the phases are expectation values, not exceeding the corresponding phases of the controlled intersections, of queuing length threshold values, and the second flows of the phases are expected arrival vehicle numbers of the corresponding phases of the controlled intersections. By means of the technical scheme, signal control over the supersaturated intersections is achieved, and the traffic capacity of the supersaturated intersections is improved.
Description
technical field [0001] The invention relates to a method for adjusting an intersection signal lamp, in particular to a control method and device for an oversaturated intersection signal lamp. Background technique [0002] Urban road intersection signal coordination control system is playing an increasingly important role in urban traffic, and urban traffic managers are trying to use urban traffic signal coordination control system to alleviate urban traffic problems. [0003] The urban road intersection signal coordination control system has the advantages of low installation cost, simple maintenance, high efficiency, real-time and high level of automation, and has been widely used. The traffic signal coordination control system is generally composed of vehicle information collection and analysis, traffic model, optimization and adjustment of timing scheme parameters, execution of signal control scheme, scheme effect feedback, etc. The traffic model uses a specific algorith...
Claims
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