Impedance sensing methods
Apparatus and methods of impedance sensing are described. One method includes performing a first digital conversion of an attribute of a sensor electrode and performing a second digital conversion of the attribute of the sensor electrode. The second digital conversion differs by at least one charact...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | Apparatus and methods of impedance sensing are described. One method includes performing a first digital conversion of an attribute of a sensor electrode and performing a second digital conversion of the attribute of the sensor electrode. The second digital conversion differs by at least one characteristic from the first digital conversion. The method further includes calculating a resistance of the sensor electrode from a first and second digital value of the first and second digital conversions, respectively; and calculating a capacitance of the sensor electrode from the first and second digital value of the first and second digital conversions, respectively. |
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