Prevention System of Slips for Shoe Sole based on Dynamic Measurement

最近一段时间，北方地区有很多行人，特别是老年人，在结冰的道路上摔倒受伤。为了采取有效的防滑措施，有必要对步态中的行走和滑行进行研究。本文对步态过程中大底的地面反力和压力分布进行了研究。本文介绍了在冬鞋上试行合理配置系统、安装防滑装置的基本方法。而且，该装置的效果还没有建立客观的评价标准。为客观评价冬鞋防滑装置，对步态过程中人体重心加速度的变化进行了研究。为了实现这些研究，在GRANT4N-AID的资助下安装了测力板和压力分布传感器，用于科学研究(B)(2)。(1)编制了由测力板测得的地面反力平均值的程序。这个公关…是有可能的进一步计算了切向力比，指出了滑移危险，确定了滑移时间。因此，可以检查在各种步态中滑动的简易性。(2)关于鞋底压力分布的测量，编制了根据数据计算任意时刻鞋底平均压力分布的程序。然后，为了方便程序的使用，制作了一份手册。(3)利用上述两个程序建立了决定抗滑材料布置的系统。首先，指定某个被测试者容易滑倒的时间。接下来，检查当时的压力分布情况。(4)测量了车身中心的加速度波形。从该波形的变化来估计易滑的程度。当它与频率的第三个主要成分的比率被检查时。若超过该值，则受试者感觉到的滑移倾向与摩擦系数的相关性较高。较少

Recently in northern area, there are many pedestrians, especially the eldely, injuries by fall caused slip on frozen road. In order to take measures against the slip, study on walking and slip during gait are necessary. In this paper, ground reaction forces and pressure distribution on outer sole during gait are made investigation. This paper shows basic ways of trial application of proper arrangement system fastened anti-slip devices on winter shoes. And, objective evaluation standard for effect of the device is not established yet. In order to objective evaluate for anti-slip device in winter shoes, change of acceleration on body center by during gait are made investigation. To realize those investigations, force plate and pressure distribution sensor were installed by the subsidy of GRANT4N-AID FOR SCIENTIFIC RESEARCH (B)(2).The results obtained are as follows. (1) The program to become an average of Ground Reaction Forces measured by force plate was made. It is possible for this pr … More ogram that a tangential force ratio is calculated, Danger of Slip is indicated, slippery time is specified. Therefore, it became possible that the easiness to slide in a various gait was checked. (2) About the pressure distribution measurement of shoe sole, The program which calculated average pressure distribution in the optional time from some data was made. Then, a manual was made for the purpose of convenience of the program use. (3) The system which decided the arrangement of Anti-slip material was made by the above 2 program. At first, the time when a certain testee slips easily is specified. Next, the pressure distribution condition of that time is checked. (4) An acceleration wave form in the body center is measured. The easiness to slip was estimated from the change in that wave form. When it was examined in the ratio to the third chief ingredient of the frequency. It could get higher correlation which exceeded it, the tendency to slip by testee sense and the coefficient of friction. Less