Patent ID: 6385511
Filing Date: 2002-05-07
Classification: B60C

Abstract:
A method of processing a signal sensed by a receiver installed on board a vehicle having a plurality of wheels fitted with respective detection and transmission modules, each detection and transmission module being capable of transmitting a detection signal including an indication of a state of the wheel fitted with said module, wherein the sensed signal is compared with a plurality of waveforms respectively stored in association with wheel positions to select a wheel position for which the stored waveform matches the sensed signal, wherein the comparison of the sensed signal with a waveform comprises, after pre-processing the sensed signal and identifying extrema of the pre-processed signal, applying a time transform to the pre-processed signal to align first and second extrema of the pre-processed signal with first and second extrema of said waveform to produce a time-transformed signal, whereby the selected wheel position is associated with a stored waveform which most closely matches the time-transformed signal.