Evacuation Simulation Of Indoor Pedestrian

With the process of urbanization accelerating,our country is no longer a large agricultural country now,which means the urban population has outnumbered the rural one.As we can see it,large public buildings such as cinemas,stadiums and exhibition halls are everywhere nowadays.This kind of places tend to gather a large number of people.If the safety measures are not good enough,there will be casualties when it comes to an evacuation situation.Considering the reasons above,it is of practical significance to study the movement characteristics of the evacuation behavior of the indoor pedestrian and to provide the evacuation strategy for public buildings.Our work has designed a system for the simulation of evacuating pedestrian based on the analysis of the psychological and physiological characteristics of dense crowd and panic pedestrian.The main contents of this paper are as follows:1.Taking the characteristics of panic pedestrian into account,we are about to use social force model to simulate Agents of pedestrian.After the reference of the Vicrowd model,we have designed a hierarchical model for pedestrian simulation.In this model,we have introduced the middle layer "group" to constrain pedestrian‘s behavior.2.When it comes to the multi-export situation,we have solved the path planning problem within two step.The first step is to search the target from the macro level,the second one is to implement navigation system form the micro level.In the first step,we mainly analyzed the distribution and flow of pedestrian.In the second step,we mainly analyzed the movements of Agents.3.We referenced the APF algorithm in order to solve the navigation problem.In this paper,the concept of dynamic potential energy grid has been referenced,and the potential energy grid is dynamically divided according to crowd density.Finally,we have improved efficiency as well quality.Then we realized a simulation system for indoor pedestrian,based on the research work above,and carried out some demonstration and testing work.Finally,we have elaborated on the incompleteness of our work and made some arrangements on the future work.