A System for Predicting Unprecedented Injury by Spatiotemporally Superimposing Children’s Normal Behavior
Yoshinori Koizumi*1,*2,*3, Yoshifumi Nishida*2, Koji Kitamura*2,
Yusuke Miyazaki*4, Yoichi Motomura*2, and Hiroshi Mizoguchi*1,*2
*1Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
*2National Institute of Advanced Industrial Science and Technology (AIST), 2-3-26 Aomi, Koto-ku, Tokyo 135-0064, Japan
*3Research Fellow of the Japan Society for the Promotion of Science
*4Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
Predicting injuries in daily life is important in the field of product safety design and risk assessment. However, in the case of children, it is usually thought that unprecedented injuries are difficult to predict because they are caused by “irregular” child behavior. Despite the prevalence of this belief, this study proposes a new injury prediction system based on the view that unprecedented injuries can, in fact, be predicted by identifying high-risk combinations of “normal” behaviors and environmental states. In this article, we also propose an injury prediction system based on spatiotemporally superimposing normal child behavior. The proposed system enables us to consistently predict injury processes consisting of the situation leading to the injury, the impact occurrence, and the resulting injury. This paper also presents an example of a system application for predicting potential injuries around a swing set in an actual park. To prove the effectiveness of the proposed system, we compare the patterns of accident processes predicted by the system with those of actual incident processes found in our observations of normal behaviors.
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Copyright© 2012 by Fuji Technology Press Ltd. and Japan Society of Mechanical Engineers. All right reserved.