Device for detecting electrically conductive objects, comprising: - an electronic system comprising first terminals for delivering at least one current pulse having a sudden rise and/or sudden drop, and comprising second terminals for tapping an induction voltage, the electronic system being designed to record the time-dependent curve of the induction voltage during and/or following the current pulse, - an arrangement of coils comprising at least three coils (10, 11, 12), of which a) a first coil and a second coil are arranged and connected to the first terminals such that the first coil and the second coil are designed to generate magnetic fields having opposite polarity in the region of a third coil connected to the second terminals, and the electronic system is designed to record the time-dependent curve of the induction voltage generated in the third coil, or of which b) a first coil and a second coil are arranged and connected to the second terminals such that the magnetic field generated by a third coil connected to the first terminals generates induction voltages in the first coil and the second coil, and the electronic system is designed to record the time-dependent curve of the differential voltage of the induction voltages of the first coil and the second coil, the electronic system being designed to respond to a characteristic profile of the time-dependent voltage curve in order to detect the object, characterised in that, for this purpose, the electronic system is designed to record, during and/or following the current pulse, at least one characteristic point on the time-dependent voltage curve in the form of at least one maximum point and/or at least one minimum point and/or at least one inflection point and/or at least one zero crossing, and to identify the time interval between one or more characteristic points and/or between the start of the current pulse and at least one of the characteristic points in order to determine the profile. - an electronic system comprising first terminals for delivering at least one current pulse having a sudden rise and/or sudden drop, and comprising second terminals for tapping an induction voltage, the electronic system being designed to record the time-dependent curve of the induction voltage during and/or following the current pulse, - an arrangement of coils comprising at least three coils (10, 11, 12), of which a) a first coil and a second coil are arranged and connected to the first terminals such that the first coil and the second coil are designed to generate magnetic fields having opposite polarity in the region of a third coil connected to the second terminals, and the electronic system is designed to record the time-dependent curve of the induction voltage generated in the third coil, or of which b) a first coil and a second coil are arranged and connected to the second terminals such that the magnetic field generated by a third coil connected to the first terminals generates induction voltages in the first coil and the second coil, and the electronic system is designed to record the time-dependent curve of the differential voltage of the induction voltages of the first coil and the second coil, the electronic system being designed to respond to a characteristic profile of the time-dependent voltage curve in order to detect the object, characterised in that, for this purpose, the electronic system is designed to record, during and/or following the current pulse, at least one characteristic point on the time-dependent voltage curve in the form of at least one maximum point and/or at least one minimum point and/or at least one inflection point and/or at least one zero crossing, and to identify the time interval between one or more characteristic points and/or between the start of the current pulse and at least one of the characteristic points in order to determine the profile. a) a first coil and a second coil are arranged and connected to the first terminals such that the first coil and the second coil are designed to generate magnetic fields having opposite polarity in the region of a third coil connected to the second terminals, and the electronic system is designed to record the time-dependent curve of the induction voltage generated in the third coil, or of which b) a first coil and a second coil are arranged and connected to the second terminals such that the magnetic field generated by a third coil connected to the first terminals generates induction voltages in the first coil and the second coil, and the electronic system is designed to record the time-dependent curve of the differential voltage of the induction voltages of the first coil and the second coil, the electronic system being designed to respond to a characteristic profile of the time-dependent voltage curve in order to detect the object, characterised in that, for this purpose, the electronic system is designed to record, during and/or following the current pulse, at least one characteristic point on the time-dependent voltage curve in the form of at least one maximum point and/or at least one minimum point and/or at least one inflection point and/or at least one zero crossing, and to identify the time interval between one or more characteristic points and/or between the start of the current pulse and at least one of the characteristic points in order to determine the profile.