Crowd evacuation simulation method and system based on evacuation path set

A technology of path collection and simulation method, applied in the direction of design optimization/simulation, prediction, instrument, etc., can solve the problems of inability to simulate individual behaviors and actions, lack of individual cognition and analysis of the environment, etc., to optimize the actual evacuation process, The effect of improving evacuation efficiency
CN107220447AActive Publication Date: 2017-09-29SHANDONG NORMAL UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANDONG NORMAL UNIV
Publication Date
2017-09-29

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Abstract

The invention discloses a crowd evacuation simulation method and system based on an evacuation path set. The method includes the steps: extracting characteristics of an evacuation scene to obtain a two-dimensional model of the evacuation scene; acquiring all available evacuation paths based on the two-dimensional model of the evacuation scene and a social force model fusing obstacle avoiding strategies to obtain the evacuation path set; performing discretization operation on all paths in the evacuation path set, and calculating crowd distribution degree and block degree information in real time to obtain evaluation values of each individual in crown for the all paths in the evacuation path set; building a roulette according to the evaluation values of each individual in the crown for the all paths in the evacuation path set, and selecting an optimum evacuation path by the aid of pseudo random selection strategies based on the roulette and stable factors to achieve simulation of crowd evacuation processes. According to the method, evacuation strategies are changed in real time by a simulation individual according to current evacuation environments, and safety evacuation plans of sudden events can be scientifically guided.
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Description

Technical field

[0001] The invention relates to the field of crowd evacuation computer simulation, in particular to a crowd evacuation simulation method and system based on an evacuation path set. Background technique

[0002] Due to the gradual increase in various large-scale gatherings, safety accidents such as crowding and trampling that may occur in this case bring huge losses to the country and people in life and property. The main reason is that when the crowd density is high, the individual flow There are mutual squeezing and interweaving, making the crowd in a highly unstable state, and the necessary means to reduce the occurrence of such safety accidents is early warning and effective control.

[0003] However, the actual exercise process for safety hazards has great limitations, such as: complex individual movement causes no reproducibility of the test process, and the safety of exercise personnel cannot be effectively guaranteed. Therefore, it has the advantages of safet...

Claims

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