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Crowd evacuation method in low-visibility environment

A low-visibility, personnel evacuation technology, applied in the field of simulation modeling, can solve the problem of few practical applications

Inactive Publication Date: 2020-09-11
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Existing studies have a good theoretical basis but few practical applications. Combined with the actual evacuation behavior to establish a model, the simulation experiment obtained has practical guiding significance for the evacuation of the existing emergency crowd.

Method used

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  • Crowd evacuation method in low-visibility environment
  • Crowd evacuation method in low-visibility environment
  • Crowd evacuation method in low-visibility environment

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Embodiment Construction

[0068] In order to deepen the understanding of the present invention, the present invention will be further described below in conjunction with the examples, which are only used to explain the present invention, and do not constitute a limitation to the protection scope of the present invention. This embodiment provides a method for crowd evacuation in a low-visibility environment, and mainly studies the problem of crowd evacuation when there are multiple exits from the perspectives of the evacuation leader's attraction to ordinary people and the limitation of visibility range. Firstly, the initial model of social force is established with the help of Newton's second law; then, the attractiveness of the leader to ordinary individuals is established, and the desired speed direction of the individual is selected according to the individual's familiarity with the surrounding environment; finally, the panic factor and the visual impact factor are added , to study the effects of vis...

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Abstract

The invention provides a crowd evacuation method in a low-visibility environment. The crowd evacuation method comprises the following steps: firstly, establishing an initial model of social force by virtue of a Newton second law; secondly, defining an acting force in an exponential form, representing the attraction of the leader to a common individual within the influence range, and selecting theexpected speed direction of the individual according to the familiarity degree of the individual to the surrounding environment; and finally, adding panic factors and visual influence factors, and thevisibility range, and studying the number and positions of leaders and the influence of the panic factors on the crowd evacuation efficiency. The model can effectively improve the evacuation efficiency and reduce crowd congestion and trampling phenomena, and has practical significance.

Description

technical field [0001] The invention relates to the technical field of simulation modeling, in particular to a crowd evacuation method in a low-visibility environment. Background technique [0002] At present, with the acceleration of urbanization in our country, a large number of people are pouring into cities, and there are hidden dangers of public safety accidents in densely populated places such as airports, stations, and large sports venues. The simulation of crowd evacuation helps to study how to evacuate the crowd faster and more when an emergency occurs, which can effectively reduce casualties and has important social significance for protecting the lives of the people. Based on this, in recent years, the study of crowd evacuation has developed into an independent subject and a new hot spot in international security research. [0003] Computer simulations have been used to study the dynamic process of crowd evacuation for decades. During this period, experts and sc...

Claims

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Application Information

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IPC IPC(8): G06F30/20G06F111/10G06F119/14
CPCG06F30/20G06F2111/10G06F2119/14
Inventor 王杰曹科才
Owner NANJING UNIV OF POSTS & TELECOMM
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