Continental Automotive Gmbh

Continental Automotive France

Carlos Eduardo Rodrigues

Gabriel Spick

Olivier Gerardiere

A method for detecting the approach and/or contact of a user's hand close to a motor vehicle door handle. The handle including: an electrode having a capacitance, and a device for measuring the variation in capacitance, a low-frequency antenna situated close to the electrode, the emissions of the low-frequency antenna bringing about disturbances in the operation of the device for measuring the variation in the capacitance. The method proposes that a new adaptive approach detection threshold be calculated, depending on an average of the previous measured variations in the capacitance, calculated over a predetermined time interval, the measured variations being weighted by a factor depending on a difference between each measured variation and the average of the variations calculated previously over a previous predetermined time interval, the approach detection being confirmed if the measured variation is higher than the new adaptive threshold.

Method for detecting approach and/or contact of the hand of a user close to a door handle of a motor vehicle, associated capacitive sensor and detection module

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Toulouse, France

Carlos Eduardo Rodrigues