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行人微观运动特征的实验研究

已有 4461 次阅读 2010-3-28 13:14 |个人分类:复杂系统|系统分类:论文交流|关键词:学者| Social, moving, characteristics, force

刚被Building and Environment接收的一篇文章

基于数字图像处理方法的行人微观运动特征实验研究(doi: 10.1016/j.buildenv.2010.03.015

Building and Environment
Volume 45, Issue 10, October 2010, Pages 2160-2169

Experimental Study on Microscopic Moving Characteristics of Pedestrians in Built Corridor Based on Digital Image Processing

J. Ma1,2, W.G. Song1,, Z.M. Fang1, S.M. Lo2, G.X. Liao1

http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6V23-4YT6D18-1&_user=1555926&_coverDate=10%2F31%2F2010&_rdoc=1&_fmt=high&_orig=search&_sort=d&_docanchor=&view=c&_acct=C000053683&_version=1&_urlVersion=0&_userid=1555926&md5=dd9bf7e545f83639e5fc1dc0ab70663f

Abstract: Experiments of moving characteristics of Chinese pedestrians in a built corridor were conducted. Pedestrians’ trajectories were first extracted with digital image processing method and then mapped into real space coordinates by adopting a direct linear transformation approach. Moving characteristics of single pedestrian, interaction between pedestrian and the built corridor, and also interaction between pair pedestrians were analyzed and compared with those of the experiments with French pedestrians. It is found that the average relaxation time of the Chinese pedestrians is 0.714s, and the mean free speed is 1.51m/s, which are both larger than those of the French pedestrians. Meanwhile, the Chinese pedestrians also kept a distance of about 0.4m to the wall. When walking too close to the wall, the pedestrian has a tendency to walk far away, which is quantified as exponential decay force. Given a same distance, the fore from the wall on the French pedestrian is larger than on the Chinese pedestrian due to the different pedestrian size and personal space. When one pedestrian evade another standing still pedestrian, the interaction between them shows a non-isotropic feature. We found that the right preference in Chinese pedestrians is more obvious than in French pedestrians. We further quantified the interaction among pedestrians, and found the force from those who locate on the right-forward direction doesn’t change much while from those who locate on the left-forward direction varies with the increase of distance. The basic data presented in this study can be used to validate and refine pedestrian traffic models.

Keywords: direct linear transformation; pedestrian traffic; evacuation; pedestrian interaction; social force

 

我们发现行人在与其他行人相互作用时,其他行人对目标行人的作用分三种:当目标行人的左前方出现了其他行人,那么其他行人对目标行人的影响是使其向右偏向;而目标行人右前方出现了其他行人,那么其他行人对目标行人的作用是使目标行人有左行的偏向;如果其他行人出现在目标行人的正前方,那么其对目标行人的作用是使其减速前选择左前或右前偏向。并且,这种偏向性在中国人群中表现为右行的偏向。由于个体体型及可以接受的与他人的最小空间距离等影响,行人动力学模型中需要考虑不同的文化差异造成的影响:需要根据不同地区,不同人群选择或者修正模型以期获得符合实际行人运动的结果。


 



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