带有视野半径的PSO人群疏散模型  

PSO Model for Pedestrian Evacuation with Consideration of Vision Field

作　　者：赵子骏 王坚[1] 王超[1] 

机构地区：[1]同济大学CIMS研究中心,上海201804

出　　处：《中国公共安全（学术版）》2016年第4期39-43,共5页China Public Security(Academy Edition)

基　　金：国家自然科学基金"基于群智能的突发事件区域人群疏散模型研究"(71273188)

摘　　要：本文结合实际的疏散中的具体问题,对基本粒子群(PSO)算法加以改进,提出了一种带有视野半径的PSO疏散模型。该疏散模型在基本PSO算法的基础上,考虑了人群在疏散过程中无法有效获得疏散人群中疏散状况最优的个体的信息的实际问题,在实际疏散过程中人们会更加倾向于寻找视野中的最优个体,并且在疏散过程中会有一定的跟随最优个体前进的趋势。通过对该方法进行建模分析,结果显示出,相对于传统PSO算法,改进的PSO算法有着更好的疏散效果。In order to study the issue of pedestrian evacuation, we proposed a method based on particle swarm optimization（PSO） algorithm, which abstracting individuals to single particles. In order to make PSO algorithm has a better simulation result with the problems of pedestrian evacuation, this article raised a new improvement that improved the basic PSO algorithm, this improvement is that we combined with the actual situation of evacuation to establish PSO model with sight radius. On the basis of the basic PSO algorithm, this model considered the problem that crowd cannot get the optimal individual information in the situation of evacuation effectively, instead, in the real situation, individual has a tendency to find the optimal individual within the radius of the individual sight. The individuals in the process of evacuation showed a tendency of following the track of the optimal individual. Simulation results demonstrated that the PSO algorithm with sight radius can contribute to a better effect of evacuation which means that the average evacuation time is shorter.

关 键 词：公共安全 人群疏散 PSO算法 视野半径 平均疏散时间 

分 类 号：X956[环境科学与工程—安全科学]