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Method and system for division of urban intersection signal control periods based on Poisson distribution

A technology of signal control and Poisson distribution, applied in traffic signal control, traffic flow detection, etc., can solve problems such as difficult to realize automatic division of traffic flow throughout the day, and achieve the effect of automatic division

Active Publication Date: 2021-09-28
SHENZHEN UNIV
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  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a Poisson distribution-based urban intersection signal control period division method and system for the above-mentioned defects of the prior art, aiming at solving the difficulty in realizing all-day traffic flow in the prior art. problem with automatic division

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  • Method and system for division of urban intersection signal control periods based on Poisson distribution
  • Method and system for division of urban intersection signal control periods based on Poisson distribution
  • Method and system for division of urban intersection signal control periods based on Poisson distribution

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[0036] In order to make the object, technical solution and advantages of the present invention more clear and definite, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0037] Please also see Figure 1-Figure 2 , the present invention provides some embodiments of a Poisson distribution-based method for dividing signal control periods at urban intersections.

[0038] The traffic simulator is a tool that uses simulation technology to describe the real traffic behavior. The traffic simulator can restore the real scene, so it is widely used in the test of signal control. The Poisson distribution is currently the most commonly used departure model in most simulators (SUMO, VISSIM). The simulator can issue various random traffic flows (including various extr...

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Abstract

The invention discloses a method and system for dividing a time period of urban intersection signal control based on Poisson distribution. The division method includes the steps of: dividing a period of time into several time intervals, and establishing a flow array according to the real traffic flow; The time intervals in which the array conforms to the Poisson distribution are merged into signal control periods. The time intervals conforming to the Poisson distribution are combined into the signal control period, and the change of traffic flow in a signal control period is small, and the same signal control program can be used to realize the automatic division of traffic flow throughout the day.

Description

technical field [0001] The invention relates to the technical field of division of signal control periods, in particular to a method and system for dividing signal control periods of urban intersections based on Poisson distribution. Background technique [0002] With the increase of urban residents' car ownership, traffic congestion is an important problem that needs to be solved urgently in urban management. Traffic signal control is to restrict, adjust, induce, and divert traffic flow through signal lights in urban intersections to reduce the total amount of traffic, guide traffic, and ensure traffic safety and smoothness. It is an effective way to solve urban traffic congestion. However, since the traffic flow at intersections changes greatly with time, it is impossible to meet the actual needs of traffic management by only using a set of timing schemes in the prior art to control the traffic flow throughout the day. [0003] In the prior art, it is difficult to define ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/01G08G1/07
Inventor 郑晔马丁赵志刚刘家春靳凤营
Owner SHENZHEN UNIV