Kose Alper, Cereatti Andrea, Della Croce Ugo
Department of Biomedical Sciences, University of Sassari, Sassari, Italy.
Annu Int Conf IEEE Eng Med Biol Soc. 2011;2011:1125-8. doi: 10.1109/IEMBS.2011.6090263.
A method for estimating step length during level walking using a single inertial measurement unit is proposed. A combination of an optimally filtered direct and reverse integration technique and a velocity update technique for the initial velocity values identification was implemented to reduce the effects of the acceleration signals drift. The method takes advantage of the cyclic nature of gait. The inertial measurement unit was placed at waist level on the right side and the method was validated on eight subjects walking for 75 m while varying their speed. The traversed distance was estimated with an average error equal to 0.8% of the total walking distance.
提出了一种使用单个惯性测量单元估计水平行走时步长的方法。采用了最优滤波的正向和反向积分技术与用于初始速度值识别的速度更新技术相结合的方法，以减少加速度信号漂移的影响。该方法利用了步态的周期性。惯性测量单元放置在右侧腰部水平位置，该方法在八名受试者以不同速度行走75米的过程中得到了验证。估计的行走距离平均误差等于总行走距离的0.8%。
Zotero 插件