Method for locating a position of each wheel of a motor vehicle associated with an electronic device

A method for locating a position of each wheel of a motor vehicle comprising wheels each equipped with an electronic device which integrates at least one sensor for an operating parameter correlating to a rotation of the associated wheel, and an emitter transmitting values of said at least one operating parameter to a central unit, a wheel speed sensor for each wheel which supplies data representative of the rotation of the associated wheel to the central unit, said location method comprising:

• for each electronic device, at least two sequences of several acquisitions of said at least one parameter are performed, which are then transmitted by the electronic device to the central unit by formation of a signal correlating to the rotation of the associated wheel for said at least two sequences, with simultaneous acquisition by the central unit of data representative of the rotation transmitted by each wheel speed sensor by formation of a signal associated with each wheel speed sensor acquired during each of said at least two sequences,
• a pairing is performed of the signal correlating to the wheel rotation for the electronic device for said at least two sequences with each of the signals associated with each of the wheel speed sensors,
• for each pair, a phase offset is measured between the signal correlating with the rotation of the wheel associated with the electronic device and the signal associated with each wheel speed sensor, and
• when a constant phase offset varying within a predefined calibratable range is measured in the pairs of said at least two sequences with the signal associated with the wheel speed sensor, while the other pairs with the signals associated with the other wheel speed sensors have a greater or variable phase offset, the electronic device associated with said at least one signal correlating with the rotation of the wheel is identified as being assigned to the wheel associated with the wheel speed sensor which emitted the signal of the wheel speed sensor having a constant phase difference from the signal of the electronic device,
• the method being continued for associating a wheel of the vehicle to each electronic device.