Patent ID: 8058978

Claim:
Method of locating positions of wheels ( 2 ) of a vehicle ( 1 ) each equipped with an electronic module ( 3 ) adapted to transmit, to a central processing unit ( 4 ) mounted on the vehicle ( 1 ), signals representative of operating parameters of each wheel also including an identification code of said wheel, said locating method consisting in: equipping the vehicle ( 1 ) with electromagnetic emission sources ( 5 , 6 ) each positioned close to a wheel ( 2 ), and adapted to present a coverage encompassing trajectory of the electronic module ( 3 ) when the wheel ( 2 ) rotates, and programming the central processing unit ( 4 ) and the electronic modules ( 3 ) so as to apply a locating procedure whereby, in succession for each of the electromagnetic emission sources ( 5 , 6 ), the central processing unit ( 4 ) orders the emission, by said electromagnetic emission source, of an electromagnetic identification request signal, on receipt of which the electronic module ( 3 ) of each wheel ( 2 ) positioned close to this electromagnetic emission source ( 5 , 6 ) is adapted to send in response a signal comprising at least the identification code of that wheel, and said locating method being characterized in that: the vehicle ( 1 ) is equipped with electromagnetic emission sources each consisting of at least two emitting antennas ( 5 , 6 ) physically offset so that said emitting antennas present separate shadow areas along the trajectory of the electronic module ( 3 ) of the wheel ( 2 ) positioned close by, and a sequential switching of the emitting antennas ( 5 , 6 ) is ordered in order to switch over from one of the antennas to the other so that, if one of the antennas is in a shadow area, the other is not.