CAPACITIVE SENSOR AND METHOD FOR ELIMINATION OF NOISE THEREFOR

摘要

The present invention relates to a capacitive sensor and a method for eliminating noise for the same to automatically eliminate noise from a capacitive sensor. The capacitive sensor according to an embodiment of the present invention may comprise a frequency generator for generating a plurality of detection frequencies as capacitance changes are detected; and a noise elimination part which picks out an active detection frequency based on the changes of each detection frequency and which determines the enabled state of a detection signal based on the active detection frequency. [Reference numerals] (210) Capacitance change detecting part (PAD); (220) Sensing part; (222) Frequency counter; (224) Capacitance change calculating part; (226) Noise elimination part; (228) Change reference value providing part; (230) Frequency generating part; (240) Output control part