Patent ID: 6922140

Claim:
A system for monitoring the pressure of tires of a motor vehicle with location of the wheels, comprising a monitoring element, one pressure sensor per wheel i associated with a transmitter with which it transmits to the monitoring element a radio signal comprising sensor identification data, the system comprising: a means for determining the phase shift (di) between two radio signals transmitted at two distinct times (T 1 and T 2 ) for each wheel i; a means for determining the rotation angle (Dj), modulo 2π, traveled by each of the wheels j between the two times (T 1 and T 2 ); a means for comparison between the phase shifts (di) and the rotation angles (Dj), including determining first wheel angles based on the phase shifts and second wheel angles based on the rotation angles, and ranking the first wheel angles and second wheel angles in order to create pairs of wheel angles; and a means for identify the location of the wheels based on the ranking.