Analysis of Acceleration Signals using Wavelet Transform
Analysis of Acceleration Signals using Wavelet Transform
复制标题
使用小波变换分析加速度信号
DOI：
10.1055/s-0038-1634267
复制
发表时间：
2000
影响因子：
1.7
通讯作者：
Y. Fukui
中科院分区：
文献类型：
--
作者：
M. Sekine;T. Tamura;M. Akay;T. Togawa;Y. Fukui
摘要：在这项研究中，我们试图区分水平和楼梯行走的加速度信号基于小波分形分析方法。加速度信号是在靠近身体重心的地方测量的，同时受试者在走廊和上下楼梯中连续行走。我们使用基于小波的分形分析方法来识别步行模式。通过小波系数估计与分形维数直接相关的参数H，并在上楼过程中将其变为低值。通过手动设置个人的阈值水平，可以将上楼步行与其他步行类型区分开来。然而，水平行走与下楼行走之间没有显示出受试者的共同特征。
Abstract: In this study, we attempted to discriminate the acceleration signal for horizontal level and stairway walking using wavelet-based fractal analysis method. The acceleration signal was measured close to the center of gravity of the body, while the subjects walked continuously in the corridor and up and down the stairs. We used the wavelet-based fractal analysis method to discriminate walking pattern. The parameter H which is related directly to the fractal dimension was estimated by the wavelet coefficient and was changed into low value during walking upstairs. By manually setting the threshold level for individual, it was possible to discriminate walking upstairs from the other walking type. However, the common feature among subjects was not shown between level walking and walking downstairs.