Infrared detection module is essentially an infrared transceiver device, is a pair of infrared transmitter and receiver tubes. The transmitter tube emits a certain frequency of infrared light, when the infrared light emitted in the direction of detection meets the reflective surface, the infrared light is reflected back to be received by the receiver tube, after the inverter (Schmitt trigger) circuit processing, the indication of the blue light will be lit, while the signal output interface output digital signal (a low-level signal). Infrared detection (tracking) module of the infrared transmitter and receiver by the ambient light interference, in general, the closer the reflective surface, the better. There is a potentiometer on the back of the infrared detection (tracking) module. By adjusting the potentiometer, the threshold value of the module can be adjusted to realize the output of the corresponding digital signal. Adjusting the voltage of the potentiometer can adjust the detection distance of the infrared sensor. When adjusted to the LED blue light just off, the detection distance is the farthest. If the LED blue light is always on or never on, you can adjust the potentiometer. Make the LED blue light just off-state. Working voltage: 3.3~5V.Detection response distance: 1~50mm. Schematic
