A contact detection device includes: an AC power supply switching between and applying first and second AC voltages to first and second electrode layers; a storage part storing an alternative quadrature component corresponding to a state in which a conductor is in contact with an electrostatic sensor; a quadrature component comparison part comparing between a first quadrature component extracted upon applying the first AC voltage to the second electrode layer and a second quadrature component extracted upon applying the second AC voltage to the second electrode layer; and a contact determination part that detects contact of a conductor based on the first quadrature component when the first quadrature component and the second quadrature component fall within a first quadrature error, and detects contact of a conductor based on the alternative quadrature component when the first quadrature component and the second quadrature component fall outside the first quadrature error.
CONTACT DETECTION DEVICE
28.11.2024
Patent
Elektronische Ressource
Englisch
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