TRIBOELECTRIC SENSOR FOR CONTROLLING A MOVABLE THIN OBJECT Russian patent published in 2021 - IPC G07D7/02 G01B7/06 

FIELD: thin sheet objects control.

SUBSTANCE: triboelectric sensor for monitoring a movable thin object contains an electrically conductive gear shaft and a receiving electrode, between which a gap is formed for moving a thin object in it, while the gear shaft is rotatably installed, in which its surface facing the gap moves in the same direction, as a thin object, with a linear speed exceeding the speed of movement of a thin object; an amplifier configured to generate an output signal of the sensor, wherein the receiving electrode is connected to the input of the amplifier. The electrical circuit of the sensor is configured to maintain the average value of the potential difference between the receiving electrode and the gear shaft at a zero value. The toothed shaft is placed on the path of movement of the thin object so that the first surface of the thin object touches the surface of the gear shaft facing the gap.

EFFECT: control of thin sheet objects by control of their surface.

13 cl, 4 dwg