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?:abstract
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There is an urgent need to combat COVID 19 and to find strategies to minimize the devastating effect that causes in the community This paper focuses on an automated handwashing system with a dryer that could be deployed in public or private areas The system uses a single Arduino UNO, ultrasonic sensor, hand dryer(fan blower with heating element), relay, motor pump for Water and Soap, Containers for soap and water, and the frame of the system An important feature designed into the system is the essentially independent operation of the two systems, which hand dryer and hand wash despite being controlled from a common micro-controller The system encourages the user to observe the proper WHO protocol in handwashing through a sequence of water-soap-water delivery Appropriate amounts of soap and water are delivered within allotted times, and time gaps between soap and water deliveries The hot dryer used to dry the wash hands to make sure that all bacteria will be removed The no-contact system decreases the possible viral transmission of any virus Proteus is used to test its functionality and responses based on the requirement of the system A prototype is then built to test and verify the system’s actual operation and responses Tests show that all the requirements are met It follows perfectly the required hand wash protocol from the WHO and drying of hands The paper shows photos of the built and tested prototype, a diagram of the initial system design concept, a screen capture of the control system software model, a schematic diagram of the control system, a sketch with dimensions of the handwashing machine frame or housing, and the flowchart on which the Arduino script is developed The operation and user-interaction of the actual system are also described © 2020, World Academy of Research in Science and Engineering All rights reserved
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