The invention relates to a capacitive sensor device (10) for detecting the presence of a human body part in a detection region of the sensor device (10), to a steering wheel (100) comprising a capacitive sensor device (10), to a method for operating a capacitive sensor device (10) or a steering wheel (100), and to a vehicle comprising a capacitive sensor device (10). The sensor device (10) comprises a first sensor electrode (11) with a first electrode section (21), a second sensor electrode (13) with a second electrode section (22) and a measuring device (30) for ascertaining a measurement variable (UMess, IMess; B1-B2; B2-B1) which is based on a current difference (I1-I2; I2-I1) between a first current (I1) flowing in the first electrode section (21) of the at least one first sensor electrode (11) and a second current (I2) flowing in the second electrode section (22) of the second sensor electrode (13), wherein the measuring device (30) has an electric coil (31), and the coil (31) is designed in such a manner and the first electrode section (21) of the first sensor electrode (11) and the second electrode section (22) of the second sensor electrode (13) are at least partly arranged relative to each other and relative to the coil (31) in each case and are coupled to the coil (31) such that a measurement variable which is based on the current difference (I1-I2; I2-I1) is generated or can be generated in the coil (31) using the current difference (I1-I2; I2-I1) between a first current (I1) flowing in the first electrode section (21) and a second current (I1) flowing in the second electrode section (22).
KAPAZITIVE SENSORVORRICHTUNG, LENKRAD MIT EINER KAPAZITIVEN SENSORVORRICHTUNG, VERFAHREN ZUM BETRIEB EINER KAPAZITIVEN SENSORVORRICHTUNG UND/ODER EINES LENKRADS SOWIE FAHRZEUG MIT EINER KAPAZITIVEN SENSORVORRICHTUNG
CAPACITIVE SENSOR DEVICE, STEERING WHEEL COMPRISING A CAPACITIVE SENSOR DEVICE, METHOD FOR OPERATING A CAPACITIVE SENSOR DEVICE AND/OR A STEERING WHEEL, AND VEHICLE COMPRISING A CAPACITIVE SENSOR DEVICE
DISPOSITIF DE CAPTEUR CAPACITIF, VOLANT COMPRENANT UN DISPOSITIF DE CAPTEUR CAPACITIF, PROCÉDÉ DE FONCTIONNEMENT D'UN DISPOSITIF DE CAPTEUR CAPACITIF ET/OU D'UN VOLANT, ET VÉHICULE COMPRENANT UN DISPOSITIF DE CAPTEUR CAPACITIF
2023-11-29
Patent
Electronic Resource
German
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