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A Method of Dynamically Adjusting Phase Difference Based on Queuing Level

A technology of dynamic adjustment and phase difference, which is applied to the traffic control system, instruments, and control traffic signals of road vehicles. It can solve the problems of inability to adapt to the characteristics of the road network, overflow and other problems, and achieve the effect of timely response and reduction of empty discharge.

Active Publication Date: 2021-11-23
南京市公安局交通管理局
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the phase difference in the existing coordinated control system is generally fixed, and there is a risk of overflow in some road sections with short distances, which cannot adapt to the characteristics of the actual road network.

Method used

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  • A Method of Dynamically Adjusting Phase Difference Based on Queuing Level
  • A Method of Dynamically Adjusting Phase Difference Based on Queuing Level
  • A Method of Dynamically Adjusting Phase Difference Based on Queuing Level

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Embodiment Construction

[0027] The inventive method is further described below in conjunction with the accompanying drawings.

[0028] The method for adjusting the phase difference proposed by the present invention includes relative phase difference setting and absolute phase difference adjustment.

[0029] The relative phase difference setting process is as follows: figure 1 shown, including

[0030] Data collection analysis: collect queuing data and analyze the queuing rules of the road network.

[0031] In the urban road network, the queuing length varies with time and space. It is of great significance to study or observe the change rule of the queuing length for the coordinated control of traffic signals.

[0032] Divide queuing levels: Different queuing lengths correspond to different queuing levels, including "fewer queues", "less queues", "more queues", "more queues" and so on.

[0033] According to the analyzed queuing length, different queuing levels are divided. The higher the queuing ...

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Abstract

The invention discloses a method for dynamically adjusting the phase difference based on the queuing level, including relative phase difference setting and absolute phase difference adjustment; the phase difference is adjusted in real time according to the queuing length, which is more in line with the actual road network requirements and reduces overflow and empty discharge phenomena.

Description

technical field [0001] The invention belongs to the technical field of traffic signal control, in particular to a method for dynamically adjusting phase difference based on queuing level. Background technique [0002] Traffic signals can separate conflicting traffic flows from time to time, so that they can pass in an orderly manner at different times, ensuring the safety of vehicles. With the development of modern science and automobile technology, the increase in the number of motor vehicles, and the intensification of conflicts in the road network, in order to reach the destination more safely and quickly, people began to use the latest scientific and technological achievements to solve traffic problems, thus promoting the traffic signal intelligence. Control field development. [0003] The traffic flow in the road network changes dynamically, and the traffic demand fluctuates accordingly. How to make the coordinated control system timely and effectively change with the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/08G08G1/082
CPCG08G1/08G08G1/082
Inventor 石巍苏子毅徐冉张俊郝建根陈淼于焕凯林锐
Owner 南京市公安局交通管理局
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