The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 31, 2017
Filed:
Oct. 19, 2012
Commissariat a L'energie Atomique ET Aux Ene Alt, Paris, FR;
Movea, Grenoble, FR;
Pierre Jallon, Grenoble, FR;
Commissariat à l'énergie atomique et aux énergies alternatives, Paris, FR;
MOVEA, Grenoble, FR;
Abstract
This method for detecting activity (A) of a physical system carrying a motion sensor comprises the following steps: extracting () a sequence (M) of measurements provided by the motion sensor; deducing () therefrom an observation sequence (O) calculated on the basis of the measurement sequence (M); determining () the activity (A) of the physical system in the form of a sequence of states corresponding to the observation sequence, using a statistical model of components of the observation sequence in view of a plurality of possible predetermined states of the physical system. At least one component of the observation sequence (O) is calculated on the basis of a reference value ({circumflex over (λ)}) of a vector representing a reference axis. In addition, the method comprises the following calibration steps: calculation () of a likelihood value of the observation sequence (O) in view of said statistical model; comparison () of this likelihood value with a predetermined threshold; on the basis of this comparison, activating an estimation () of a new reference value ({circumflex over (λ)}) of the vector representing the reference axis.