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F. Keplinger, A. Kainz, W. Hortschitz, H. Steiner:
"Method and device for sensing electric field";
Patent: International, Nr. WO2021119710A1; eingereicht: 18.12.2020, erteilt: 24.06.2021.

The invention relates to a sensor (1) for measuring an electric field strength of an electric field (13), having: a base element (2); a sensor element (3) with at least one electrical conductor (5), the sensor element (3) being deflectable out of an idle position into a measuring position by the effect of the electric field (13) on the electrical conductor (5); a counter element (4) with at least one electrically conductive coupling region (7), which is connected to a voltage source (10a), in particular an AC voltage source, for capacitive coupling to a coupling section (6) of the electrical conductor (5) on the sensor element (3), the electrically conductive coupling region (7) on the counter element (4) extending adjacent to the coupling section (6) of the electrical conductor (5) on the sensor element (3) when the sensor element (3) is in the idle state.