DESIGN AND CONSTRUCTION OF MICROCONTROLLER BASED AUTOMATIC HAND SANITIZER
Abstract
The increasing need for proper hand hygiene, especially in public and healthcare environments, has made automatic hand sanitizing systems essential in preventing the spread of infectious diseases. This project focuses on the design and construction of a microcontroller-based automatic hand sanitizer that dispenses sanitizer without physical contact, thereby reducing the risk of cross-contamination.
The system is built around a microcontroller which controls the operation of the device. An infrared (IR) sensor is used to detect the presence of a hand beneath the dispenser. Once a hand is detected, the microcontroller activates a DC pump or solenoid valve for a predefined period, dispensing an adequate amount of sanitizer. The system is powered by a regulated power supply to ensure stable operation.
The constructed automatic hand sanitizer is cost-effective, reliable, and easy to maintain. It can be deployed in schools, hospitals, offices, markets, and other public places to promote proper hygiene practices. The results obtained from testing show that the system responds accurately to hand detection and dispenses sanitizer efficiently, meeting the intended design objectives.
Full-Text Access Notice
In accordance with the NERD Policy on promoting peer-reviewed publication, public access to the full text of a project, thesis or dissertation is restricted for three years, allowing the author and supervisors sufficient time to pursue peer-reviewed publication.
During this period, researchers with legitimate academic or research purposes may request authorisation directly from the author to enable NERD to release the indexed full texts of the work using the form below.