POSITION DETECTION OF AN ORAL CARE IMPLEMENT

摘要

An oral care implement (1) comprising: an electrode pair with an impedance formed therebetween when electrified; a frequency generator, electrically connected to the electrode pair, for applying a voltage with at least two different frequencies between the electrode pair; an impedance measurement unit, electrically coupled to the electrode pair, for measuring impedance values between the electrode pair at least at the different frequencies; and a contact determination unit, in communication with the impedance measurement unit, wherein the contact determination unit comprises a memory for storing a function, wherein the function correlates impedance values of a defined oral area at the different frequencies, and wherein the contact determination unit comprises a processor for processing the measured impedance values to the stored function so as to determine contact information of the electrode pair with the defined oral area.

主权项

1. An oral care implement (1) comprising:
an electrode pair (1200) with an impedance formed therebetween when electrified; a frequency generator (1300), electrically connected to the electrode pair (1200), for applying a voltage with at least two different frequencies between the electrode pair (1200); an impedance measurement unit (1100), electrically coupled to the electrode pair (1200), for measuring impedance values between the electrode pair (1200) at least at the different frequencies; and a contact determination unit (1000), in communication with the impedance measurement unit (1100), wherein the contact determination unit (1000) comprises a memory (1010) for storing a function, wherein the function correlates impedance values of a defined oral area at the different frequencies, and wherein the contact determination unit (1000) comprises a processor (1020) for processing the measured impedance values to the stored function so as to determine contact information of the electrode pair (1200) with the defined oral area.