| 摘要 |
PROBLEM TO BE SOLVED: To provide an operation device which can detect that an input part of a touch panel has become electrically unstable.SOLUTION: An operation device comprises: a touch panel 21 which includes a display part 22 for displaying a screen and a plurality of electrodes and comprises an input part 23 for outputting signals corresponding to capacitance generated between a ground potential and each electrode; an input signal processing part 14 which receives the signals outputted by each of the electrodes of the input part 23, recognizes a contact position which an operator touched, generates an operation signal corresponding to the recognized contact position and transmits it to a control device 3; and a determination part 16 for determining whether the input part 23 is electrically stable. The determination part 16 makes the display part display a warning screen if it determines that the input part 23 is electrically unstable. |
