A method for the early detection of damage to a capacitive sensor and the capacitive sensor with diagnosefunktoin

摘要

Disclosed is a method for the early detection of damage to and/or soiling of a capacitive sensor. According to said method, a degree by which the sensor is damaged and/or soiled is determined by measuring a physical property of an electrode, e.g. the resistance of the electrode, or optically by means of the coefficient of reflection of the electrode surface of at least one electrode of the capacitive sensor.