Simulation system and method of evacuation crowd behavior based on grid-density-relation

Abstract

The invention discloses a simulation system and method of an evacuation crowd behavior based on grid-density-relation. The system comprises an evacuation scene model building unit, an evacuation scene global path planning unit, a crowd activity generation unit and a crowd simulation unit, wherein the evacuation scene model building unit is used for extracting characteristics of an evacuation scene according to structural information of the evacuation scene to obtain a three-dimensional model of the evacuation scene; the evacuation scene global path planning unit used for performing global path planning on the evacuation scene according to the three-dimensional model of the evacuation scene, and calculating global paths of all entrances in the evacuation scene; the crowd activity generation unit used for performing crowd grouping according to the quantity of all entrances, a relationship between individuals in the crowd and individual location information in the evacuation scene; and the crowd simulation unit used for calculating the real-time speed of individuals in a simulation process according to a social force model, and in the simulation process, correcting the moving speed of each individual in the same group in real time, so as to keep the advancing consistency of each group, and realize behavior simulation of the evacuation crowd.

Description

technical field [0001] The invention relates to the field of evacuation simulation, in particular to an evacuation crowd behavior simulation system and method based on grid-density-relationship. Background technique [0002] Large-scale gathering of people is an important feature of modern cities and even modern society. There are great potential safety hazards hidden in densely populated places, and emergencies are prone to occur. Once the panic of the crowd is caused, crowding and trampling accidents occur, and the casualties are often very heavy. Especially with the accelerated development of my country's urbanization process, large-scale activities with high gatherings of people have increased, and crowding and trampling accidents are more likely to occur. [0003] Crowd evacuation under emergencies is a complex system engineering. In practical applications, evacuation experiments are usually used to obtain suitable evacuation plans. This method has the characteristics...

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Problems solved by technology

But it oversimplifies the behavior of pedestrians and does not consider the relationship between the crowd and the impact of the formed group on the movement

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