DEVICE FOR DETECTING INTENTION OF LOCKING OR UNLOCKING A VEHICLE OF A MOTOR VEHICLE BY A USER AND ASSOCIATED DOOR HANDLE

摘要

The present invention relates to a device for detecting (D ') the intention of locking or unlocking a door (10') of a motor vehicle by a user, said device (D ') being included in a sealed housing ( B '), integrated in an unsealed handle (10') and whose lower part comprises drainage holes (t1, t2), a part of the housing (B ') being immersed in the water (e), said device (D ') comprising: • a capacitive approach and / or contact detection sensor (100), comprising at least one detection electrode (E2'), having a variable detection capacity (Ce) representative of the approach of the hand (M) of a user, • a charging / discharging capacitor (Cs), the invention proposing the addition of a protective electrode Ep located in the part of the casing which is immersed in the water, electrically coupled to the sensing electrode and connected to a terminal of the charging capacitance e / discharge Cs in such a way that the protective electrode Ep is simultaneously at the same potential as the terminal of the charge / discharge capacitance during the different charging / discharging steps of the detection capacitance and the charging / discharging capacitance which are needed to estimate the value of the detection capability.