CSEM Centre Suisse d'Electronique et de Microtechnique SA - Recherche et Développement
发明人:
申请号：
EP14156093.8
公开号：
EP2910901B1
申请日:
2014.02.21
申请国别(地区):
EP
年份:
2019
代理人:
摘要：
The present disclosure concerns a method for determining an instant velocity of a user using a sensing device (1) destined to be worn on an arm of the user and comprising a motion sensor (2) for measuring and delivering an motion signal representative of the user's movements when the sensing device (1) is worn； the method comprising: measuring the motion signal； identifying when the user is performing a rhythmical activity and estimating a fundamental movement frequency of the user from the measured motion signal； identifying when the user is walking or running by calculating an activity level of the user using the measured motion signal and the fundamental movement frequency； 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 feature； 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.
