Intersection signal control method based on dynamic steering proportion estimation

A technology of dynamic steering ratio and intersection signal, which is applied to control traffic signals and other directions, and can solve the problems of poor adaptability to real-time traffic changes and low control efficiency.

Active Publication Date: 2014-05-21
BEIJING UNIV OF CIVIL ENG & ARCHITECTURE
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Problems solved by technology

[0006] In order to solve the problems of poor adaptability to real-time traffic changes and low control efficiency of the current traffic signal control method, the dynamic steering ratio data is used as the input data to seek a multi-objective optimal signal timing scheme

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  • Intersection signal control method based on dynamic steering proportion estimation
  • Intersection signal control method based on dynamic steering proportion estimation
  • Intersection signal control method based on dynamic steering proportion estimation

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Embodiment Construction

[0060] Hereinafter, various details involved in the technical solution of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the described embodiments are only intended to facilitate the understanding of the present invention, and do not have any limiting effect on it.

[0061] The structure diagram of intersection signal control method based on dynamic steering ratio estimation is as follows figure 1 Shown. figure 1 The left half is the actual intersection and the detector. The detector detects the traffic flow Q at the entrance and exit of the intersection. i (k) and Y j (k), as known data, transmitted to the remote computer. figure 2 The right half illustrates the control principle of the intersection signal control method based on dynamic steering ratio. The dynamic steering ratio estimation model based on Kalman filter is based on the input import and export flow Q i (k) and Y j (k), with dynamic steering ...

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Abstract

The invention discloses an intersection signal control method based on a dynamic steering proportion estimation, and aims at a four phase control intersection. The intersection signal control method based on the dynamic steering proportion estimation includes: establishing a state space model based on Kalman filtering; designing an improved sequence Kalman filtering algorithm to solve an intersection dynamic steering proportion; further establishing a multiple target signal control model which minimizes delay and queuing length and maximizes effective traffic capacity based on the above two steps so as to solve a timing parameter and an evaluation index for a intersection real-time signal. Case researches show that the intersection signal control method based on the dynamic steering proportion estimation has high efficiency and accuracy, and can achieve real-time signal control of the intersection. In allusion to the current situation that a study of combining the dynamic steering proportion estimation with signal control is basically in a blank state, the intersection signal control method based on the dynamic steering proportion estimation has the advantages of being dynamic and timely, high in efficiency, high in accuracy, optimal in multiple targets, used on line and the like.

Description

Technical field [0001] The invention relates to a signal control method based on dynamic steering ratio estimation applied to road intersections, and is used for optimal control of traffic signals at road intersections. Background technique [0002] As the core part of advanced traffic management system, real-time signal control system plays a vital role in alleviating urban traffic congestion. The signal control timing scheme needs to be based on the traffic volume, and the intersection traffic volume is highly time-varying, non-linear and random. Therefore, to establish the signal control scheme, it is necessary to obtain real-time information of the entrance and exit flow and the turning flow of the intersection. The current flow detection system cannot accurately obtain the real-time steering flow, and the dynamic steering ratio estimation model of the intersection can inversely obtain the dynamic steering ratio of the intersection based on the time series of the entrance and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/08
Inventor 焦朋朋孙拓杜林王红霖李扬威刘美琪刘彤
Owner BEIJING UNIV OF CIVIL ENG & ARCHITECTURE
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