COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIESALTERNATIVES
发明人:
JALLON, PIERRE
申请号：
EP10717610.9
公开号：
EP2421438A1
申请日:
2010.04.26
申请国别(地区):
EP
年份:
2012
代理人:
摘要：
The invention relates to a system for determining the activity of a person lying down, including at least one motion sensor (CM) with at least one measurement axis, provided with an attachment means (MF) for rigidly connecting said motion sensor (CM) to a user, characterised in that said system includes: a filter (FILT) for selecting, for at least one measurement axis of the motion sensor (CM), a high-frequency signal (HF) and a low-frequency signal (BF) a first means (CALC1) for calculating a first variable (x(n)) representing a temporal variation of the low-frequency signal (BF) a second means (CALC2) for calculating a second variable (y(n)) including the Euclidean norm, according to at least one measurement axis of the high-frequency signal (HF) and an analysis means (AN) suitable for determining an activity of a user lying down according to time using a hidden Markov model with N states respectively corresponding to N activities, said analysis means (AN) being suitable for combining: joint probability density functions of first and second variables, said probability density functions being defined for each state of the model in question, and the probability of changing between two consecutive states.Le système de détermination de lactivité dune personne allongée, comprenant au moins un capteur de mouvement (CM) à au moins un axe de mesure, muni de moyens de fixation (MF) pour lier solidairement ledit capteur de mouvement (CM) à un utilisateur, caractérisé en ce quil comprend: - un filtre (FILT) pour sélectionner, pour au moins un axe de mesure du capteur de mouvement (CM), un signal de hautes fréquences (HF) et un signal de basse fréquence (BF) - des premiers moyens de calcul (CALC1 ) dune première variable (x(n)) représentant une variation temporelle du signal de basse fréquence (BF) - des deuxièmes moyens de calcul (CALC2) dune deuxième variable (y(n)) comprenant la norme euclidienne, selon au moins un axe de mesure du signal de haute fréquence (HF) et - des m
