Portable detector for measuring movements of a person wearing the detector, and method
First Claim
1. ) Portable detector (1) comprising at least one sensor (4, 5) collecting a movement signal from a person (2) wearing the detector, characterized in that it comprises signal processing means (6) for distinguishing a component of the signal due to an external activity of the wearer and at least one component of the signal due to a physiological activity of the wearer.
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Abstract
This detection device comprises processing means (6) for distinguishing the movements of a person wearing a detector due to an external activity from movements due to his physiological activity. Movement sensor signals (4, 5) are filtered in different ways. The external activity is estimated and a subtraction gives the results for the physiological activity. Special processing is done to take account of exceptional states of the activity, such as sudden movement variations. Results can also be improves by discerning the type of activity being performed by the wearer. Finally, it is advantageous if several different sensors measure movements in different directions and if the most important measurements are chosen.
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9 Claims
- 1. ) Portable detector (1) comprising at least one sensor (4, 5) collecting a movement signal from a person (2) wearing the detector, characterized in that it comprises signal processing means (6) for distinguishing a component of the signal due to an external activity of the wearer and at least one component of the signal due to a physiological activity of the wearer.
- 8. ) Process for detecting the activity of a person, characterized in that it consists of measuring the movements of the person, and separating movements due to external activity from movements due to a physiological activity.
Specification