Patent ID: 8140212

Claim:
A method for locating a longitudinal position, either on a front end or on a rear end of a vehicle ( 1 ) with a motor (M), of wheels ( 2 - 5 ) fitted with at least one electronic module ( 6 - 9 ) adapted to send, to a central processing unit ( 10 ) mounted on the vehicle ( 1 ), signals representative of operating parameters of each wheel also comprising an identification code of each wheel, said locating method comprising: incorporating in each electronic module ( 6 - 9 ), means for measuring ( 15 ) vibrations stressing the corresponding wheel and resulting from rotation of the motor (M); in a preliminary phase of characterization of each vehicle type, in performing, with the motor (M) running and for at least one speed of rotation of said motor (M), a spectral analysis of the signals representative of the vibrations according to a frequency delivered by the respective means for measuring ( 15 ) of a wheel ( 2 , 3 ) mounted on the front end and of a wheel ( 4 , 5 ) mounted on the rear end, so as to establish a criterion for differentiating said signals comprising a frequency offset; and setting up a procedure for locating a longitudinal position of the wheels ( 2 - 5 ) comprising carrying out, with the motor running, an analysis of the signals representative of amplitude variations of the vibrations according to the frequency, delivered, at at least one same instant t, by a different means for measuring ( 15 ), and deducing from the frequency offset between said signals, an indication concerning the longitudinal position of each wheel ( 2 - 5 ).