DEVICE, METHOD AND SYSTEM FOR COUNTING THE NUMBER OF CYCLES OF A PERIODIC MOVEMENT OF A SUBJECT

摘要

The present invention relates to device, system and method for counting the number of cycles of a periodic movement of a subject, e.g. for step counting of a person. To enable more precisely counting the number of cycles of a periodic movement of a subject based on discontinuous accelerometer data the proposed device comprises an input unit (21) for receiving discontinuous accelerometer data over time indicating movement of at least a body part of the subject, a classifier (22) for classifying the movement of the subject into one of several movement classes based on said discontinuous accelerometer data, each movement class being related to a different range of speed of a periodic movement, a storage (23) for storing a table including for each movement class a periodicity value per time unit, and a movement calculation unit (24) for calculating the number of cycles of the periodic movement of the subject per time unit, for a predetermined time or continuously over time by use of the periodicity of the movement class, into which the movement has been classified.

主权项

1. Device for counting the number of cycles of a periodic movement of a subject comprising:
an input unit for receiving discontinuous accelerometer data over time indicating movement of at least a body part of the subject, a classifier for classifying the movement of the subject into one of several movement classes based on said discontinuous accelerometer data, each movement class being related to a different range of speed of a periodic movement, a storage for storing a table including for each movement class a periodicity value per time unit, and a movement calculation unit for calculating the number of cycles of the periodic movement of the subject per time unit, for a predetermined time or continuously over time by use of the periodicity of the movement class, into which the movement has been classified.