CSEM Centre Suisse d'Electronique et de Microtechnique SA—Recherche et Developpement
发明人:
Philippe Renevey,Olivier Grossenbacher
申请号：
US14627327
公开号：
US09592013B2
申请日:
2015.02.20
申请国别(地区):
US
年份:
2017
代理人:
摘要：
The present disclosure concerns a method for determining an instant velocity of a user using a sensing device destined to be worn on an arm of the user and comprising a motion sensor for measuring a motion signal； the method comprising: measuring the motion signal and identifying when the user is performing a rhythmical activity； identifying when the user is walking or running； providing a relationship between the measured motion signal and corresponding motion features relating to a propulsive impulsion of a user's step； estimating a frequency of the user's step and a user-relative step length of the user using the motion features； and determining a user-relative instants velocity by combining the estimated step frequency and the estimated step length； the instant velocity being determined from the user-relative instant velocity using a calibration factor from the user-relative instant velocity using a calibration factor.
