Control method for overhead signal based on checkpoint data

Abstract

The invention relates to a control method for an overhead signal based on checkpoint data. The method comprises the following steps: 1) acquiring an overhead index change rule, 1.1) calculating the change trend of the overhead blocking index and 1.2) calculating the change trend of the resource required by the ramp; 2) calculating and treating the checkpoint data; 3) calculating the passing requirement of the upper ramp, wherein the ramp passing requirement is the sum with each ground road passing requirement adjacent to the upper ramp and each ground road passing requirement is the product of the total amount of the ground road vehicles multiplying by the proportion of the resource required by the ramp calculated in the step 2); 4) estimating the queuing length: the queuing length is the quantity of the vehicles waiting for entering into the overhead on the upper ramp port; 5) calculating the control rate of the upper ramp; 6) calculating the green ratio of the signal lamp of the ramp. The control method for the overhead signal based on the checkpoint data, provided by the invention, has the advantages of high calculation speed, higher robustness, lower cost, higher control flexibility and high instantaneity.

Description

technical field [0001] The invention belongs to the field of intelligent transportation, and relates to an elevated entrance ramp signal control method which integrates congestion index, congestion index change trend and queuing length. Background technique [0002] With the improvement of residents' living standards, the number of private cars is increasing rapidly, and almost all cities are plagued by traffic congestion to varying degrees. Traffic congestion not only brings environmental pollution, resource consumption and other problems, but also easily causes traffic accidents, which has attracted more and more attention in recent years. There are three ways to solve traffic congestion. The first way is to increase road infrastructure construction. This way is limited by manpower, material resources and urban resources. Generally, this way will not be adopted; the second way is to carry out traffic control , restricting vehicle travel, this method not only brings certai...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the shortcomings of the existing elevated signal control method, such as slow calculation speed, low robustness, high cost, poor control flexibility, and low real-time performance, the present invention provides a fast calculation speed, robust This is an elevated signal control method based on bayonet data with high reliability, low cost, good control flexibility, and high real-time performance. Considering the current elevated congestion index, congestion change trend, and the number of entrance ramp queues, the S-plane control algorithm is used to On-ramp control, fast calculation and high robustness

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