Opening and closing of doors have been always a boring job, especially in places where a person is always required to open the door for visitors such as hotels, shopping malls, and theaters. Here is a solution to open and close the door i.e, movement sensed automatic door opening and closing system. This project is used to sense any body movement near the door. This is achieved with the help of a passive infrared sensor. Generally, a human body emits infrared energy which is detected by the PIR sensor from a particular distance. This signal which is detected by the sensor is fed to a controller to function a door motor through motor driver IC. When a body reaches the operating range of the PIR sensor, it sends a signal to the micro controller to open and close the door.

Automatic Door Opening System Circuit

The circuit diagram of an automatic door opening and closing system is shown below. The circuit is built with an Arduino UNO, 16×2 LCD, PIR sensor, connecting wires, breadboard, 1 k resistor, power supply, motor driver and DVD.

This proposed system uses a PIR sensor to sense the human body movement near to the door. Generally, a human body emits infrared energy in the form of heat, which is detected by the PIR sensor from a particular distance. Then the sensing signal is fed to an 8051 microcontroller to function a door motor via motor driver IC.

When a live body approaches the operating range of the PIR sensor, it sends a signal to open the door. The door routinely closes with a particular time delay. If there is no extra movement within the operating range of a PIR sensor. Interrupt indications are used through limit switches to avoid the motor’s locked rotor condition.

Moreover, the proposed system can be developed by interfacing a counting arrangement to count the entry and exit of people at a specific place. This can be accomplished by interfacing an EEPROM to store the data when there is no power.

Thus, this is all about the automatic door opening system with movement sensed and it’s working. We hope that you have got a better understanding of this concept. Furthermore, any doubts regarding this article or electrical and ece projects, please give your valuable suggestions by commenting in the comment section below. Here is a question for you, what are the applications of a PIR motion sensor switch?