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首页> 外文会议>6th Pan-Pacific Conference on Occupational Ergonomics null null >Proposal of New Evaluation Method of Anti-slip Effect of Devices in Walking
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Proposal of New Evaluation Method of Anti-slip Effect of Devices in Walking

机译：行走装置防滑效果评估新方法的建议

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In the cold region, there are a lot of pedestrians injured by falling on the frozen road. To solve the problems, a lot of devices to prevent slips are sold in the shoes shop. However, we do not have objective data to choose the anti-slip devices/shoes. Though coefficient of friction μ is mainly used to express the anti-slip effect of the materials of the shoes sole now, walking is a continuous contact phenomenon from the heel contact to the toe off. And, the road is various conditions. Therefore,a new evaluation method is necessary because there is a limitation in the expression by coefficient of friction μ. Then, to investigate the possibility to do an objective evaluation of anti-slip effect by using the acceleration in the direction of progress of the body,this investigation is done. The acceleration in walking has the same frequency component as the cadence. That is, when the pedestrian walks by constant cadence CAD(step/min), the frequency of the acceleration mainly becomes CAD/60 (Hz). When slips are occurred in walking,a con-stant cadence cannot be maintained. Moreover, the pedestrian corrects the posture which collapses by slips. Main acceleration component decreases relatively for those reasons. It is proposed to evaluate the anti-slip effect by using this characteristic in walking. And, the application example is indicated. Some rankings of shoes were obtained by coefficient of frition μ and by ratio of acceleration A_(main)/A_(all). The correlation r of the ranking indicated a high value. It is considered that the anti-slip effect can be evalu-ated from that according to the acceleration of the body in walking.
机译：在寒冷地区，有很多行人因跌落在冰冻的道路上而受伤。为了解决这些问题，鞋店出售了许多防止打滑的装置。但是，我们没有客观的数据来选择防滑装置/鞋子。尽管现在摩擦系数μ主要用于表达鞋底材料的防滑效果，但步行是从脚跟接触到脚趾断开的连续接触现象。并且，道路是各种条件。因此，由于摩擦系数μ的表达存在局限性，因此需要新的评价方法。然后，为了调查通过在身体前进方向上的加速度来进行防滑效果的客观评估的可能性，进行了这项研究。步行中的加速度具有与节奏相同的频率分量。即，当步行者以恒定的节奏CAD（步/分钟）行走时，加速度的频率主要变为CAD / 60（Hz）。当行走中发生打滑时，无法保持恒定的节奏。另外，行人校正因打滑而塌陷的姿势。由于这些原因，主要加速度分量相对减小。建议通过在步行中使用该特性来评估防滑效果。并且，指示了应用示例。通过摩擦系数μ和加速度A_（main）/ A_（all）的比率获得了一些鞋子的排名。排名的相关性r表示较高的值。据认为，可以根据步行中身体的加速度来评估防滑效果。

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