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1. (CN1272926) 测量人在运动中脚的触地时间和脚的腾空时间

专利局 : 中国
申请号: 98809743.5 申请日: 15.07.1998
公布号: 1272926 公布日: 08.11.2000
公布类型: A
在先PCT申请: 申请号:PCTUS9814615;公布号:9918480 点击查看数据
国际专利分类:
G04F 10/00
G PHYSICS
04
测时学
F
时间间隔的测量
10
用电装置测量未知的时间间隔的仪表
CPC:
H04B 1/1027
H04B 1/707
H04B 1/7093
H04B 1/7115
H04B 17/336
H04L 1/20
申请人: Personal Electronic Devices Inc.
个人电子设备有限公司
发明人: Paul J. Gaudet
保罗·J·高德特
Thomas P. Blackadar
托马斯·P·布莱克达
Steven r. Oliver
斯蒂文·R·奥利文
代理人: cheng wei
永新专利商标代理有限公司
优先权数据: 08942802 02.10.1997 US
标题: (EN) Measuring foot contact time and foot loft time of person in locomotion
(ZH) 测量人在运动中脚的触地时间和脚的腾空时间
摘要: front page image
(EN) The time period that a foot is in contact with the ground during a stride taken by a user, and the period that the foot is not in contact with the ground between strides taken by the user are determined by processing and analyzing the output signal of an accelerometer. The accelerometer is mounted on the user such that its acceleration sensing axis senses acceleration in a direction substantially parallel to the bottom of the user's foot. The output of the accelerometer is high-pass filtered, amplified, and fed to the input of a micro-controller, which monitors the signal for positive and negative signal spikes that are indicative, respectively, of the moment that the foot of the user leaves the ground and the moment that the foot impacts with the ground. By measuring time intervals between these positive and negative spikes, average ''foot contact times'' and ''foot loft times'' of the user may be calculated. To derive the pace of the user, the average foot contact time is multiplied by the first constant if it is less than 400 mili-seconds (ms) and is multiplied by a second constant if it is greater than 400 ms. This pace value may, in turn, be used to calculate the distance traveled by the user.
(ZH)

一种通过处理和分析加速度计(34)的输出信号来确定使用者迈步期间脚接触地面的时间周期和使用者迈步之间脚不接触地面的时间周期的方法。加速度计(34)是这样安装在使用者身上的,以致其加速度敏感轴感受到的是基本平行于使用者脚底方向的加速度。加速度计(34)的输出经过高通滤波(36)、放大(38)、然后传送到微控制器(40)的输入端,该微控制器监视这个信号,其中该信号的正和负的尖峰分别代表使用者的脚离开地面的瞬间和脚开始踏地的瞬间。通过测定这些正负尖峰之间的时间间隔,可以分别计算使用者的“脚触地时间”和“脚腾空时间”的平均值。为了推算使用者的步调,如果平均的脚触地时间在400毫秒(ms)以下,将它乘以第一常数;如果该触地时间大于400ms则将它乘以第二常数。这个步调值可以依次用于计算使用者的行走距离。


Also published as:
EP1019789JP2009160392US6052654US6298314JP2001519185 CA2303882
AU1998084047WO/1999/018480