Research On Simulation Of Pedestrian Flow Unity 3D Through Bottleneck

With the rapid development of urban economy, people's life rhythm is faster, then followed by a large internal pedestrian traffic congestion problems loom large in public places.Among them, the emergency personnel effective evacuation problem has increasingly serious with the rapid development of social economy, and also got the attention of many experts and scholars. Faced with this situation, in addition to the people to improve their safety awareness and strain capacity, through the scientific, reasonable,effective evacuation strategy, and planning,design of the building, is one to ensure the safety of pedestrians life.In addition, due to the individual, environment and other uncontrollable factors and bring threat to life safety personnel, by real people practice experiments to study the pedestrian evacuation behavior has certain limitations. Simulation the real situation through computer software technology, and through the effective control of the simulation and the pedestrian traffic behavior, to a scientific for pedestrian traffic behavior research is particularly important.In this paper, based on the social force model, and using the Unity 3D engine simulation technology to simulation the process of specific environmental emergency pedestrian evacuation, we will eventually realize the computer interactive model, which is a kind of comes from the study demand of researchers In this article, the first part is mainly focused on the design meet the experiment demand of the construction of a scene, and the second part is mainly focused on code to realize the core algorithm of social force model. Finally, through the estalished reasonable simulation of pedestrian evacuation in neck, so we can observe and study the pedestrian evacuation behavior. For the convenience of data collection and acquisition, we are going to Inner Mongolia university campus as asimulation model of the environment background, and carries on the scene rendering. Specific design is as follows:Part ?, we will introduce the theoretical based on the social force model,and we introduce the feasibility of achieve the study combining the Unity 3D technology related to the software function of in this paper. Starting from the actual campus environment, using the 3Ds Max build realistic campus environment building model. Then built model is imported into the Unity 3D, and use its function to build reasonable campus environment model of north campus of Inner Mongolia university.Part ?, combined with simulation of north campus of Inner Mongolia university, we need a concrete implementation of bottleneck which is this article main research. This article is mainly to the pedestrian evacuation process simulation for the building of a minimum of three layers,so that the pedestrians evacuation behavior not have obvious influence due to its energy consumption. Based on reasonable hypothesis, we will implement the pedestrian evacuation process simulation in the general case of stair bottlenecks.Part ?, to have to build the basic of pedestrian traffic flow simulation model, to join the campus frequent accidental fire and combining the core ideas of social force modeL,we will through the script component,which is mounted to the role of pedestrians, implementation calculation of three force (including the driving force, force between people, force between people and obstacles). The acceleration is derived by the force of pedestrians, and through the acceleration to calculate the real-time speed in the process of pedestrian evacuation.Part ?,implemented the rationality of the Unity 3D simulation model is analyzed,which is based on the social force model in neck.