Fire emergency evacuation simulation method

A simulation method and emergency evacuation technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problem that fire evacuation simulation is difficult to become a reality, and achieve the effect of avoiding the phenomenon of oscillation between individuals

Active Publication Date: 2014-12-24
BEIHANG UNIV +1
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Problems solved by technology

[0006] Due to the scarcity and complexity of crowd behavior models in fires, h

Method used

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Embodiment Construction

[0037] figure 1 The overall processing flow of the fire emergency evacuation simulation method is given, and the present invention is further described below in conjunction with other drawings and specific implementation methods.

[0038] The present invention provides a fire emergency evacuation simulation method, the main steps are introduced as follows:

[0039] 1. Global motion planning algorithm based on safety field

[0040] The present invention refers to the concept of navigation fields (Navigation Fields), and defines non-uniform two-dimensional safety fields (Safety Fields, hereinafter referred to as SF) based on the global vector field.

[0041] a) Definition of safe field

[0042] First, the algorithm defines the safety field SF as a set of unit vectors on a two-dimensional plane, that is, SF: R 2 →S 1 , S 1 =[0,2π], where R 2 represents a two-dimensional Euclidean space, S 1 Indicates the polar angle used to describe the vector.

[0043] The safety field S...

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Abstract

The invention provides a fire emergency evacuation simulation method. On the basis of establishing a real three-dimensional fire scene, researches are made around a vector-field-based global motion planning algorithm to navigate the escape of a plurality of individuals in the fire scene in real time. The method comprises the following steps of calculating a vector-field-based safety field in real time by virtue of the algorithm, constructing a fire-scene-based crowd behavior model in combination of a social force model-based local collision avoiding algorithm, and finally providing fire escape guidance for each escape individual in the scene according to the fire-scene-based crowd behavior model. According to the fire emergency evacuation simulation method, a theoretical basis is provided, the calculation accuracy can be ensured, and verification application is developed under various experimental conditions; the method has the characteristics of low calculation complexity, high simulation effect trueness and the like, and the real-time emergency evacuation of hundreds of escape individuals can be simulated during practical application.

Description

technical field [0001] The invention relates to a fire emergency evacuation simulation method. Background technique [0002] As we all know, people fleeing in panic caused by fire is one of the most disastrous collective behaviors of human beings. Due to the fire, the crowd panicked and trampled and collided with each other, which eventually resulted in a large number of casualties. According to data from the Ministry of Public Security: In 2011, a total of 125,402 fires were reported across the country, with 1,106 deaths, 572 injuries, and direct property losses of 1.88 billion yuan. Compared with 2010, the death toll increased by 3.3%. Although many modern buildings are equipped with fire early warning equipment, these equipment are difficult to really prevent the occurrence of fire, nor can they provide sufficient assistance for crowd evacuation and escape in a fire. Therefore, using computer means and corresponding modeling methods, the importance of emergency evacuati...

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Application Information

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IPC IPC(8): G06F17/50
Inventor 李帅郝爱民刘邦瑞王莉莉
Owner BEIHANG UNIV
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