Touch system for preventing water influence

A touch system configured for preventing water influence, comprising:

• a circuit board, having a conductive board body further including a plurality of configuration regions distributed in an arrangement direction;
• a plurality of touch pads, located on the circuit board in the corresponding configuration regions by being spaced with the conductive board body, a touch-pad capacitor being formed between the plurality of touch pads and the conductive board body after a work voltage is received, each of the touch pads including at least one touch portion;
• a control chip, mounted on the circuit board, further including:
• a work voltage-providing module, electrically coupled with the conductive board body, being to provide the work voltage to the conductive board body;
• a multiplex module, electrically coupled with the plurality of touch pads;
• a capacitor, having a first node and a second node, the first node being electrically coupled with the multiplex module, the second node being grounded;
• and
• a control module, electrically coupled with the multiplex module and the first node of the capacitor, having a voltage difference judged value, being based on a scan time to conduct alternately between the multiplex module and the touch portion of each of the plurality of touch pads so as to have the work voltage to be divided into a division voltage at the first node through the touch-pad capacitor and the capacitor;
• and
• an insulation board, covering at least part of the conductive board body;
• wherein, when an ion-containing liquid is on the insulation board by covering at least part of the conductive board body and the touch portion of one of the touch pads, a liquid-bridging capacitor is formed between the conductive board body and the one of the touch pads by being parallel with the touch-pad capacitor so as thereby to magnify the division voltage into a magnified division voltage;
• wherein, if the control module judges that the magnified division voltage is larger than the voltage difference judged value, the control module outputs an invalid touch signal.