基于元胞自动机的行人模型仿真研究

Simulation of Pedestrian Model Based on Cellular Automaton

为了直观地显示行人行走的特性以及与车流之间的相互作用,在分析行人交通特性后,以元胞自动机(CA)和规则描述为理论基础,提出基于CA的行人仿真模型,利用VC建立相对于其他交通对象的行人避让模型,最后用OpenGL对模型进行可视化渲染。方法以模型与现实世界的高相似性有效克服了精确数学模型在仿真行人交通时的难题。结合行人CA模型和行人避让模型开发了混合交通流仿真试验原形系统。仿真结果表明,方法有效地模拟了现实交通状况,在城市交通规划、交通需求管理和交通控制等领域有广泛的应用前景。

After analyzing the characteristics of pedestrian transportation, its simulation model based on cellular automaton （CA） is proposed, which makes CA and rule description as its theoretical foundation. Then a pedestrian avoiding model is put forward. For its high comparability between the model and real world, this technique solves the problem met by mathematic modeling when simulating pedestrian transportation. Finally a simulation experiment prototype system of hybrid transportation flows is developed by combining the pedestrian CA model with the pedestrian avoiding model. The results of simulation show that this technique can simulate the realistic transportation condition ef- fectively, and will be widely used in the fields such as city transportation programming, transportation demand management and transportation control.