Vorrichtung und Verfahren zur Überwachung des Luftdruckes in den Reifen eines Kraftfahrzeuges

摘要

The invention relates to a device for monitoring air pressure in the tyres of a vehicle. The inventive device comprises devices (2) for determining the wheel speed or other characteristic variables for the speed of the tyres of the vehicle; a device for calculating differential variables on the basis of the wheel speed or speed variables, and a device (6) for evaluating the differential variables with respect to a set-value deviation and for generating a warning signal if the set value deviation exceeds a threshold value. The inventive device also comprises a device (4, 5) for measuring directly the air pressure in the tyre of a wheel (1) and for transferring an air pressure characteristic variable to the evaluation device (6), wherein a warning signal is generated if the deviation of the air pressure characteristic variable with respect to a set-value exceeds a corresponding threshold value.