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Single-point adaptive control method based on array radar

An adaptive control and array radar technology, which is applied to control traffic signals and other directions, to achieve the effect of improving traffic efficiency

Active Publication Date: 2017-07-04
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

At present, single-point control includes fixed scheme control, multi-period control, induction control and adaptive control. The traditional method generally predicts the upstream demand of the stop line by the upstream section detector, and sets the threshold according to the change of a certain traffic parameter to optimize. a certain blindness

Method used

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  • Single-point adaptive control method based on array radar
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Embodiment Construction

[0068] Below in conjunction with accompanying drawing, the present invention is described in detail, as figure 1 Shown, concrete steps of the present invention are as follows:

[0069] c1. Determine the phase phase of the intersection

[0070] According to the channelization and traffic flow status of the intersection, determine the phase structure and release sequence of the intersection, and set the left-turn phase when there is a left-turn special lane and when the left-turn traffic flow is large.

[0071] c2. Determine the initial green light time

[0072] The array radar can calculate the composition of vehicles in the queue according to the position and speed of the vehicles at the end of the red light. Considering that the queues in different lanes may be different, the maximum value is taken.

[0073]

[0074] c3 calculates the number of vehicle delays and stops

[0075] c31. Optimizing the calculation of vehicle delays and parking times in the phase channelizati...

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Abstract

The invention discloses a single-point adaptive control method based on an array radar, wherein the method mainly relates to the field of intersection traffic signal adaptive control. The single-point adaptive control method realizes dynamic prediction and signal optimization for traffic state of a single intersection through a characteristic that a novel array radar detector can detect positions and speeds of vehicles in an inlet lane. The method comprises the steps of determining a signal base solution; detecting an initial queue length at the intersection according to the array radar, and calculating initial green light time; acquiring vehicle information of each inlet lane, and predicating time in arriving at a stopping line, and determining state of the vehicle in passing the stopping line; calculating the delay and number of parking times of each vehicle; and determining a phase switching decision. Through arrayed radar technology, the single-point adaptive control method has advantages of performing accurate detection for real-time traffic state of each inlet lane of the single intersection, performing adaptive control and improving operation efficiency and service level of the intersection traffic.

Description

technical field [0001] The invention relates to a traffic signal control method for a single intersection, in particular to single-point self-adaptive control using array radar data. Background technique [0002] Urban traffic problems are becoming more and more prominent, especially at intersections. The green light utilization rate is not high during low peak hours, and the intersection congestion is serious during peak hours. At present, single-point control includes fixed scheme control, multi-period control, induction control and adaptive control. The traditional method generally predicts the upstream demand of the stop line by the upstream section detector, and sets the threshold according to the change of a certain traffic parameter to optimize. A certain blindness. This invention proposes a single-point control based on an array radar detector, and performs adaptive control through real-time detection of the running status of each entrance road at the intersection. ...

Claims

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Application Information

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IPC IPC(8): G08G1/08
CPCG08G1/08
Inventor 金盛沈莉潇徐亮刘美岐王杰罗小芹
Owner ZHEJIANG UNIV
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