Measuring Device and Method for the Detection of an Approach

Method for the detection of an approach of a hand to a hand-held device, particularly an electric hand-held device, with a capacitive measuring device, particularly according to any of the preceding claims, wherein the capacitive measuring device has a ground electrode structure with at least one ground electrode (EM, ER, EL) and at least one sensor electrode and wherein

• in a first measurement cycle, the ground (GND) of the capacitive measuring device is galvanically connected with an electrically conductive structure (G) of the hand-held device and the first sensor signals (DS1) are detected in the at least one sensor electrode,
• in a second measurement cycle, the ground (GND) of the capacitive measuring device is galvanically connected with at least one ground electrode (EM) of the ground electrode structure and second sensor signals (DS2) are detected in the at least one sensor electrode, and
• the difference between the signal level of the first sensor signal (DS1) and the second sensor signal (DS2) is determined, wherein the difference determined is indicative of the approach of the hand to the hand-held device.