Hella Gmbh & Co. Kgaa

Karsten Kuemmel

Fabian Utermoehlen

Volker Woessmann

Joerg Diekmann

An inductive sensor, in particular a length sensor or an angle sensor, including an oscillator for generating a sinusoidal excitation signal having a first excitation frequency. A resonant circuit is connected to the oscillator and may be excited by the excitation signal to generate an electromagnetic field. A coupling element is movable relative to the resonant circuit, for changing the field as a function of a length or a rotation angle. A sensor generates an electrical sensor signal as a function of the field, A measuring transducer generates a measuring transducer output signal as a function of the electrical sensor signal, which represents the length or the rotation angle, and a checking filter checks the sinusoidal form of the excitation signal.

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Dortmund, Germany

Karsten Kuemmel