Patent ID: 8405495

Claim:
A method of locating wheels of a vehicle (V) on which are mounted n wheels ( 1 - 4 ) each equipped with an electronic module ( 5 - 8 ) designed to emit, to a central unit ( 9 ) mounted on said vehicle, electromagnetic signals representative of operating parameters of each wheel and an identification code of the latter, said location method comprising: in having, in a fixed position on the vehicle (V), in the vicinity of at least (n-1) wheels ( 1 - 4 ), an emission means ( 10 - 13 ) in which is stored a code, called location code, able to be identified by the central unit ( 9 ) and to enable the latter to locate the position of said emission means on the vehicle (V), and in implementing a location procedure comprising: controlling an activation of each emission means ( 10 - 13 ) upon the emission of an electromagnetic signal by the electronic module ( 5 - 8 ) located in the vicinity of said emission means, and in inserting said location code into said electromagnetic signal by modulating the absorption/reflection of said electromagnetic signals, and in delivering to the central unit ( 9 ) a signal incorporating the location code of said emission means ( 10 - 13 ) associated with the identification code of the wheel ( 1 - 4 ) located in the vicinity of the latter, said location method being characterized in that: radio-tags are used as emission means, the emission by the electronic modules ( 5 - 8 ) of electromagnetic signals incorporating a final portion comprising a pure wave is controlled, and the radio-tags ( 10 - 13 ) are activated so as to insert the location codes into the electromagnetic signals by modulating the absorption/reflection of said pure waves.