Research On Simulation Methods Of Sign Guided Crowd Evacuation Considering Emotional Factors

Large scale crowd evacuation simulation technology can analyze,simulate and predict the movement behavior of the crowd,and reduce the hidden danger of public safety to some degree.Office buildings,shopping malls and other large buildings are generally equipped with evacuation signs and other auxiliary equipments.These equipments can provide route guidance and evacuation information for crowd in emergency to improve the evacuation efficiency.Therefore,it is of great theoretical and practical significance to study effective and feasible evacuation simulation methods in guided emergency evacuation.Nowadays,the simulation methods of guided crowd evacuation seldom consider the emotion of pedestrians and the influence of emotion spread among people.This dissertation mainly studies the simulation of sign guided crowd evacuation under the influence of emotional factors.The main research work of this dissertation is as follows:1)A crowd evacuation simulation method considering emotion and sign guidance is proposed.Firstly,we couple the emotional factors in the process of agent perceiving signs based on the VCA model(Visibility Catchment Area).Secondly,we model the agent's emotion and consider the repair effect of signs on agent's emotion.Thirdly,we add route points to the scene,select different route points dynamically according to the emotion of the agent to simulate the evacuation behavior of the agent,and couple the emotional factors in the process of agent's updating speed.Finally,we design relevant simulation experiments to verify the effectiveness of the method.2)The emotional contagion model is introduced into the simulation of guided crowd evacuation,and a simulation method of guided crowd evacuation based on emotional contagion is proposed.Firstly,we group the population based on the social comparison theory and improve the Durupinar model.The improved model integrates the heterogeneous factors such as age and ocean personality.Secondly,we consider the influence of environmental factors and emotional contagion,and update the emotion of agent.Thirdly,we simulate the behavior of agent under the influence of social factors.Finally,we use the method to carry out crowd evacuation simulation experiments,and verify the effectiveness of the proposed method.3)Based on the above methods,a rapid visual simulation platform based on the guidance of signs is built.The platform is mainly based on Unity 3D,we can write XML to model the scene,dynamically update the simulation parameters,so as to quickly carry out the three-dimensional crowd evacuation simulation guided by signs.