| 摘要 |
PROBLEM TO BE SOLVED: To provide a static electricity detection device that is provided with a noise determination unit by means of soft processing.SOLUTION: A static electricity detection device comprises: a static capacitor detection unit 100 which has a plurality of drive electrodes X, X, Xto X, and detection electrodes Y, Y, Yto Yto be plurally arranged to face the drive electrodes so as to cross the drive electrodes, and in which a static capacitor value of a node N(i=0 to m, j=0 to n) where the drive electrode and the detection electrode cross respectively varies with proximity of an object or contact thereof; and a control unit 200 that performs computation processing for detecting a touch state to the static capacitor detection unit 100 by comparison of an output value (counter value T(i=0 to m, j=0 to n)) of each node N(i=0 to m, j=0 to n) to be read from the detection electrode. When each calculation value based on each output value of all nodes of one electrode of the drive electrodes and the detection electrodes exceeds a noise determination threshold set to be smaller than a touch threshold, the control unit 200 is configured to determine that noise is deemed to be applied. |
