Over-the-air touch system with high anti-interference capability

The invention aims to provide the air touch system with the high anti-interference capability, which is simple in circuit, low in cost and power consumption and capable of accurately identifying touch operation. The device comprises a capacitor charge collector, a voltage comparator, a spread spectrum module, a constant current source module and a touch control identification module, the capacitor charge collector and the constant current source module are both in electric signal connection with the spread spectrum module, and the output end of the spread spectrum module is connected with the input end of the voltage comparator. And the output end of the voltage comparator is connected with the input end of the touch identification module. The method is applied to the technical field of touch systems.