The infrared touch screen used by the touch all-in-one machine uses the infrared matrix densely distributed in the X and Y directions to detect and locate the user's touch. The infrared touch screen is equipped with a circuit board frame in front of the display. The circuit board is arranged with infrared transmitting tubes and infrared receiving tubes on four sides of the screen, one by one corresponding to the horizontal and vertical cross infrared matrix. When the user touches the screen, his finger will block the two horizontal and vertical infrared electronic white board lines passing through the position, so he can judge the position of the touch point on the screen. Infrared touch screen is a highly integrated electronic circuit integration product. The infrared touch screen contains a complete integrated control circuit, a group of high-precision and anti-interference infrared transmitting tubes and a group of infrared receiving tubes, which are cross mounted on the highly integrated circuit board in two opposite directions to form an invisible infrared grating. The intelligent control system embedded in the control circuit continuously sends pulses to the diode to form an infrared deflection beam grid. When touching objects such as fingers enter the grating, the light beam is blocked. The intelligent control system will detect the change of light loss and transmit signals to the control system to confirm the x-axis and y-axis coordinate values.
