Question

Explain sensor used in door open and close application

Answer 1

movement sensed automatic door opening and closing system. This project is used to sense any body movement nearby the door. ... This signal which is detected by the sensor is fed to a controller to function a door motor through motor driver IC.

Answer 2

Solution: For an automatic opening and closing of the door applications, PIR sensors are generally used. Automatic door opening systems are nowadays present in almost all commercial buildings, theatres and shopping malls.

Different sensors other than PIR are infrared sensors, laser sensors, radar sensors and so on. In PIR sensors, infrared rays produced by the human body automatically open and close the door.