Method for the measurement and analysis of tyre air pressure with allocation of wheel positions and system for tyre air pressure measurement

Abstract

In a method for the measurement and analysis of tire air pressure with an allocation of wheel positions (I, II, III, IV) of a vehicle () for analysis in a tire air pressure measurement system each wheel () of the vehicle () is allocated an air pressure checking device (), an LF receiver (), in particular a magnetic field strength receiver, an analysis unit (), an RF-transmission device () and an individual wheel code. The LF receiver () receives electrical LF signals from an LF transmission device () of a central unit () arranged in the vehicle (), the analysis unit () analyzes the received signal amplitudes and from these determines a wheel rotation rate and the RF transmission device () of the wheel () sends RF signals with information about the wheel rotation rate and the individual wheel code to the central unit () of the vehicle (). The central unit () determines the wheel position (I, II, III oder IV) of the wheel () using another measurement system () and allocates the air pressure checking device () and its individual wheel code to the known wheel position (I, II, III or IV) on the vehicle (). A tire air pressure measurement system has a central unit () arranged in a vehicle () with an LF transmission device (), an RF receiver device () and a central analysis device (). An air pressure checking device () arranged on each wheel () of the vehicle (), an LF receiver device (), RF transmission device () and analysis unit () for determining a rotation rate using a periodically varying amplitude of the received LF signal, and a measurement system () for measuring the wheel rotation rate at each wheel () and/or for determining the type of bend are additionally provided.