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Method and system for people evacuation simulation under emergencies

A technology of emergencies and simulation methods, which is applied in the field of crowd evacuation simulation systems, can solve the problems of unrealistic simulation of individual behaviors, lack of individual cognition and analysis of the environment, etc., and achieve the effect of simulation

Inactive Publication Date: 2017-05-17
SHANDONG NORMAL UNIV
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Problems solved by technology

[0007] Helbing and Molnar proposed that the social force model only simulates crowd behavior based on the formula of Newtonian mechanics. Although it can reproduce some evacuation phenomena very well, such as "fast is slow", "arch effect", etc., the model oversimplifies the individual's behavior. Behavior, which lacks the individual's cognition and analysis of the environment, so it cannot truly simulate the behavior of the individual during the emergency evacuation process

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  • Method and system for people evacuation simulation under emergencies
  • Method and system for people evacuation simulation under emergencies
  • Method and system for people evacuation simulation under emergencies

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Embodiment 2

[0107] Embodiment 2: Another embodiment of the present invention is a crowd evacuation simulation system under an emergency, including: an acquisition unit for real-time acquisition of exit information in the evacuation scene; a radiation transmission unit for taking the center of the exit as the center of the circle , to radiate and send the exit information within a first range whose visual distance is a radius; a propagation unit, configured to propagate among individuals in a form of gradually decreasing reliability outside the first range; a calculation unit; configured to transmit according to each The exit information received by the individual uses the social force model to calculate the individual speed and direction in real time to realize the simulation of crowd evacuation behavior. The above functions are realized by means of computer programming.

Embodiment 3

[0108] Embodiment 3: as figure 1 As shown, the individual group evacuation simulation is carried out from the 15m×15m plane area of ​​the actual scene of 250 people, as shown in Figure 2 to Figure 5 shown. There are four exits in the scene, three of which have a width of 1m, and one exit has a width of 2m. figure 2 is the initial position distribution of individuals, and the individuals are relatively evenly distributed in the scene. image 3 For the distribution of the crowd in the mid-term of evacuation, individuals form an arched distribution at each exit, which is consistent with the self-organization effect of individual evacuation rows under crowded conditions. Figure 4 The distribution of the crowd in the later stage of evacuation, from the results, the number of individuals gathered near the exit with a width of 2 meters is much more than that of other exits, indicating that the width of the exit played a greater role in the selection of the exit. Figure 5 Shown...

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Abstract

The invention relates to a method and system for people evacuation simulation under emergencies. The method comprises the steps of obtaining outlet information in an evacuating scene in real time, taking the center of an outlet as the circle center, performing radiation sending of the outlet information within a first range with a visual range as the radius; causing individuals in the first range to completely receive the outlet information; transmitting the complete outlet information to an area outside the first range; causing the individuals outside the first range to obtain the outlet information through a neighbor individual, wherein the outlet information is spread between individuals in the form of credibility gradually reduced outside the first range; according to the outlet information received by each individual, adopting a social force model to calculate individual speed and direction in real time, and achieving simulation of people evacuation behaviors. According to the method and system for people evacuation simulation under the emergencies, by introducing a transmission mechanism with information loss, the learning of the evacuating environment by the individuals is simulated, and scientific instruction of an emergency safe evacuation plan can be achieved.

Description

technical field [0001] The invention relates to the field of crowd evacuation computer simulation, in particular to a crowd evacuation simulation system and method thereof under emergencies. Background technique [0002] With the rapid development of science and technology, social public resources have been greatly enriched. At the same time, with the improvement of people's living standards, large-scale gatherings in various public places have gradually increased. When the density of the crowd is high, the individual flows interweave and squeeze each other, and the crowd is in a highly unstable state, which is a hidden danger of safety accidents such as crowding and trampling. If this phenomenon cannot be promptly warned and effectively controlled, it will cause huge losses of life and property. Compared with the actual drill of safety hazards, computer simulation technology has the characteristics of safety, repetition, and easy to change the environment, so it has been g...

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/367
Inventor 刘弘韩延彬
Owner SHANDONG NORMAL UNIV
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