Crowd evacuation simulation system based on composite potential energy field

Abstract

The invention provides a crowd evacuation simulation system based on a composite potential energy field. An improved potential energy field model is adopted for the system, a traditional potential energy field under Dirichlet boundary conditions is linearly combined with a potential energy field under Neumann boundary conditions, a local potential energy field for solving collision prevention problems between people is added into the combined potential energy field, and thus the composite potential energy field is obtained; by combining an update strategy of pedestrians and a pedestrian speed control method, the simulation system of personnel evacuation in emergency on different scales of scenes can be established according to the layout of the actual scene. In the crowd simulation process, influences of path plans of moving individuals on the evacuation are fully considered, and the potential energy field method can play a certain role in removing the influence factor. The system has extensive application prospects in research on simulation of safe and fast evacuation of a large number of personnel on difference scales of scenes, the design defects on the scenes can be found, and the crowd evacuation simulation system can assist in making execution schemes in emergency and is economically feasible.

Description

technical field [0001] The invention relates to the field of crowd simulation in computer graphics, and more specifically, to a crowd evacuation simulation system based on a composite potential energy field in scenarios of different scales. Background technique [0002] With the continuous improvement of urbanization level, temporal and spatial crowding appears in the city. In terms of timeliness, the nine-to-five work system has led to crowds at bus stations and subway stations during commuting hours; the annual Spring Festival travel has led to crowds at bus stations, train stations and airports at the beginning of the year. In terms of space, crowds are mainly concentrated in stations, airports, exhibitions and other places, and the number of people often exceeds the limit allowed by the building. Due to its high population density, coupled with special events such as fires and earthquakes, if people accidentally fall, it is extremely easy to cause a stampede accident un...

AI Technical Summary

Problems solved by technology

In the process of crowd simulation, the simulation system fully considers the influence of the path planning of moving individuals on evacuation and the role of the potential energy field in solving this influencing factor.

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