keywords: Jacob B. Akeredolu, John F. Wansah, Hikon E. Omega, Amaitem J. Iseh, Actor J. Ocheje and Cookey Iyen
In this work, a low cost automated sliding door system is developed. This has been occasioned by the high cost of imported automated door systems found in the country. The system employs a DC motor, PIR motion sensors and the Arduino Uno (microcontroller) programmed to automatically open and close a door upon detecting movement in its vicinity. Usually, the temperature and surface characteristics of objects cause an HC-SR5901 passive infrared sensor to detects variations in the amount of infrared radiation falling on it. Hence, a moving body such as human can distort the background radiation pre-recorded by the sensor. The resulting difference in the incoming radiation is converted to a change in output voltage which is measured by an on-board amplifier. As the ambient infrared signals change rapidly, the on-board amplifier trips the output to indicate motion. Consequently, the drive unit controlled by Arduino microcontroller is activated to drive the door open and close. A model of the system has been built and successfully tested to demonstrate the operation of the door.
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