Method for locating the longitudinal position of the wheels of a vehicle

Abstract

The invention relates to a method for locating the longitudinal position, either on the front end or on the rear end of a vehicle with engine, of wheels (4) fitted with an electronic module (8). According to this method, there are incorporated, in each electronic module (8), means (15) of measuring vibrations stressing the corresponding wheel and resulting from the rotation of the engine, and, firstly, in a preliminary phase, a spectral analysis is performed, with the engine running, of the signals delivered by the respective measurement means (15) of a wheel mounted on the front end and of a wheel mounted on the rear end, so as to establish a criterion for differentiating said signals consisting of a frequency offset between these signals. Furthermore, according to this method, the procedure for locating the longitudinal position of the wheels consists in carrying out a spectral analysis of the signals delivered by the different measurement means (15), with the engine running, and in deducing from the frequency offset between said signals, an indication concerning the longitudinal position of each wheel.

Description

technical field [0001] The invention relates to a method of locating the longitudinal position of a wheel at the front or rear end of a vehicle with an engine, said wheel being fitted with an electronic module adapted to send a signal to a central processing unit mounted on the vehicle, said signal representing each wheel The operating parameters and contains the identification code of the wheel. Background technique [0002] For safety purposes, motor vehicles are increasingly fitted with monitoring systems comprising sensors mounted on the individual wheels of the vehicle to measure parameters such as the pressure or temperature of the tires mounted on these wheels and to Informing the driver of any abnormal changes in the measured parameters. [0003] These monitoring systems typically have: [0004] - an electronic module mounted on each wheel of the vehicle, said electronic module comprising a microprocessor and a radio frequency transmitter (or RF transmitter), in ad...

AI Technical Summary

Problems solved by technology

[0012] However, this solution is very expensive, since it means installing three antennas on the vehicle, with all the corresponding limitations: connecting cables, controlling amplifiers, etc.

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