Patent Document ID: 9344083
Application ID: 14022818
Patent Status: 1

Claim One:
1. A method for opening/closing an access ( 102 ) in hands-free access mode made secure by detection of movement of a lower member ( 3 , 4 ) of a user by a remote access system, this access system comprising at least two means of detection ( 1 , 2 ) which each emit a signal whose variations ( 10 , 12 ; 31 , 33 , 35 ) are analyzed, the method comprising: validating detection of a movement of the lower member of the user ( 3 , 4 ) by application of a double verification step according to a criterion for identification of a form of variation (F 2 ) of each signal's derivative function with a model form of said movement ( 23 ), and according to a criterion for simultaneity of detection of the forms of variation ( 25 ) identified on the signal's derivative function, wherein the form of variation (F 2 ) to be verified includes points (A, B,) between two slopes of opposite signs of V-shaped type, wherein the identification criterion comprises detecting times (tA, tB) of critical changes in variation of slope inclination of the form of variation (F 2 ), corresponding to a first one of said points (A) and a second one of said points (B) of the form of variation (F 2 ), in order to acquire values of the critical changes in variation of slope inclination (dAsA, dAsB) at the first point (A) and at the second point (B), determining values of a ratio R of variation in instantaneous amplitude and of duration EtA of travel of the form of variation (F 2 ), and comparing ( 61 , 63 , 59 ) these values of critical variations in slope inclination (dAsA, dAsB), of the ratio R of variation in amplitude, and of duration EtA of the form of variation (F 2 ) with predefined threshold values (Amin, Bmin; Etmax; Rmin).