System and method for observing the swimming activity of a person
First Claim
1. A system for observing a swimming activity of a person, comprising a waterproof housing comprising a motion sensor, and furnished with fixing means for securely fastening the housing to a part of the body of a user, characterized in that the system further comprises analysis means for analyzing signals provided by the motion sensor for at least one measurement axis of the motion sensor and which is configured to determine a type of swimming of the user as a function of time by using a hidden Markov model with N states corresponding respectively to N types of swimming, the model being characterized by a column vector μ
- and a diagonal matrix Σ
, both of which are representative of a state of the hidden Markov model corresponding to said swimming and having dimensions equal to the number of measurement axes of the motion sensor.
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Abstract
A system for observing a swimming activity of a person includes a waterproof housing (BET) having a motion sensor (MS), and is furnished with fixing means (BEL) for securely fastening the housing (BET) to a part of the body of a user. The system has analysis means (AN) for analyzing the signals transmitted by the motion sensor (MS) to at least one measurement axis and which are adapted for determining the type of swimming of the user as a function of time by using a hidden Markov model with N states corresponding respectively to N types of swimming.
3 Citations
16 Claims
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1. A system for observing a swimming activity of a person, comprising a waterproof housing comprising a motion sensor, and furnished with fixing means for securely fastening the housing to a part of the body of a user, characterized in that the system further comprises analysis means for analyzing signals provided by the motion sensor for at least one measurement axis of the motion sensor and which is configured to determine a type of swimming of the user as a function of time by using a hidden Markov model with N states corresponding respectively to N types of swimming, the model being characterized by a column vector μ
- and a diagonal matrix Σ
, both of which are representative of a state of the hidden Markov model corresponding to said swimming and having dimensions equal to the number of measurement axes of the motion sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
- and a diagonal matrix Σ
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16. A method for observing a swimming activity of a person on the basis of measurements obtained from a motion sensor fixed in a waterproof manner to a part of the body of a user, characterized in that signals obtained from the motion sensor for at least one measurement axis of the motion sensor are analyzed to determine a type of swimming of the user as a function of time by using a hidden Markov model with N states corresponding respectively to N swimming types, the model being characterized by a column vector μ
- and a diagonal matrix Σ
, both of which are representative of a state of the hidden Markov model corresponding to said swimming and having dimensions equal to the number of measurement axes of the motion sensor.
- and a diagonal matrix Σ
Specification