一种人群疏散模型的改进及轻量实现

针对传统人群疏散模拟中基于多智能体模型不能准确表达人群躲避行为和缺少轻量级实现形式的问题,该文提出了一种改进的BOIDS模型躲避规则算法并实现基于WEB形式的人群疏散模拟。先用线球相交方法设置智能体的定义区域;再用球球相交方法计算智能体与障碍物间的距离;最后实现了智能体躲避障碍物行为,并实现针对具体疏散区域空间特征的人群疏散模拟轻量级表示。实验结果表明:改进算法能够准确地表达智能体躲避障碍物时的行为习性,研究成果可为相关管理者进行应急疏散指挥工作的开展提供信息化服务。

Improvement and lightweight implementation of a crowd evacuation model

According to the fact that there is no accurate expressing on the crowd behavior of the crowd evacuation simulation based on Multi-Agent model,this paper presented an improved algorithm for BOIDS model about the avoid rule,and implemented the crowd evacuation simulation on webpage.Firstly,defined area of the agent was set by the line-sphere intersection method.Secondly the distance between the agent and the obstacle was computed by the sphere-sphere intersection method.Finally agent complete the behavior to avoid the obstacle.This paper achieved lightweight presentation of crowd evacuation aimed to the specific evacuation area that had spatial feature.The results of simulation experiment indicated that the behavior of the agent to avoid the obstacle could be expressed accurately by this improved algorithm.This research could provide informationalized service to the related administrators to implement the emergency evacuation work.