Abstract: The invention relates to a method for protecting a contactless charging/discharging process of a battery-operated object (4), in particular an electric vehicle, wherein the object (4) is charged or discharged by means of inductive energy transmission between a first coil (8) of a charging/discharging station (6) and a second coil (10) of the object (4), wherein a protection area (18, 20) in the surroundings of the charging/discharging station (6) is defined, a detection range (22, 24) of monitoring sensors (16) or an evaluation range of the detection range (22, 24) of monitoring sensors (16) is adjusted to the protection area (18, 20), and the presence of metal and/or persons in the detection range (22, 24) or evaluation range of the monitoring sensors (16) is monitored during a charging/discharging process of the object (4). A computer program and a system (2) which are set up to carry out the method are also stated.

Abstract: The invention relates to a device (15) for operating an inductive charging system (1) for a motor vehicle (2), said device comprising: a fixed primary unit (4) of a charging station (3); a secondary unit (6) that is associated/can be associated with the motor vehicle (2); and means for positioning the motor vehicle (2) having the secondary unit (6) relative to the primary unit (4). According to the invention, the means have at least one ultra wide-band sensor (16, 17, 21).

Abstract: The invention relates to a monitoring apparatus (10) for at least one electrical apparatus designed for inductive energy transmission, having a sensor device (12) with a coil arrangement comprising at least one coil (14) and an evaluation device (20) for detecting whether at least one measured physical variable differs from at least one predefined normal range of values, wherein the at least one coil (14) of the coil arrangement is wound, designed and/or attached to at least one filter in such a manner that currents and/or voltages induced in the at least one coil (14) of the coil arrangement can be at least partially averaged and/or filtered out. The invention also relates to electrical apparatuses equipped with the monitoring apparatus (10) and to corresponding methods.