MOVEMENT SENSED AUTOMATIC DOOR OPENING SYSTEM
ABSTRACT
The
project is designed for automatic door opening system using PIR sensor. Opening
and closing of doors is always a tedious job, especially in places like shopping
malls, hotels and theatres where a person is always required to open the door
for visitors.
This
project proposes a system of automatic opening and closing of door by sensing
any body movement near the door. This is achieved with help of a PIR (Passive Infrared) sensor. A live body generally emits infrared energy which is
sensed by the PIR sensor from a considerable distance. This sensing signal is
fed to a microcontroller to operate a door motor through motor driver IC. When a body approaches within the operating range of the sensor, it sends a logical command to open the door. The
door automatically closes with a fixed time delay. If there is no further
movement within the PIR operating range. Interrupt signals are used through
limit switches to avoid locked rotor condition of the motor.
Further this project can be enhanced interfacing a
counting arrangement for keeping a record of entry and exit of people at
particular place. This can be achieved by interfacing the system with an EEPROM
(non-volatile memory) to avoid loss of stored data even if the power fails.
BLOCK
DIAGRAM
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