The sensor module has a strong ability to adapt the ambient light, which has a pair of infrared emissions and receiving tubes, and an emission tube emits an infrared ray of a certain frequency. When the detection direction encounters an obstacle (reflection surface), the infrared reflection is back to receive the receiving tube. After the comparator circuit is processed, the green indicator will illuminate, and the signal output interface outputs a digital signal (a low level signal), which can adjust the detection distance by the potentiometer knob, the effective distance range of 2 ~ 30cm, the operating voltage is 3.3V- 5V. The detection distance of the sensor can be adjusted by a potentiometer, which has a small interference, convenient use, and convenient use, which can be widely used in robotic avoidance, avoidance trains, pipeline counting, and black and white lines.
1. When the module detects the front obstacle signal, the green indicator light on the board is lit up, and the OUT port continuously outputs a low level signal. The module detects the distance 2 to 30cm, the detection angle is 35 °, the detection distance can pass the potential. The device is adjusted, clockwise adjust the potentiometer, the detection distance increases; counterclockwise adjustment potentiometers, the detection distance is reduced.
2. The sensor actively infrared reflection detection, so the reflectivity and shape of the target are the key to the detection distance. Among them, the black detection distance is small, white is large; small-scale object is small, large and large distance.
3. The sensor module output port OUT can be directly connected to the microcontroller IO port, or directly drive a 5V relay; connection mode: VCC-VCC; GND-GND; OUT-IO.
4. The comparator uses the LM393, the work is stable.
5. The module can be powered by 3-5V DC power supply. When the power is turned on, the red power indicator lights down.
6. With a 3mm screw hole, easy to fix and install.
7. Each module has adjusted the threshold comparison voltage through the potentiometer in the delivery, not special cases, do not adjust the potentiometer.