Track: Senior Design Competition / FYP Competition

Abstract

The No-Hands Health Helper aims to provide a more efficient way to go through the COVID-19 screening process as well as to help prevent the spread of it. The system contains two main components. The first component is a questionnaire that is filled out through your computer to ensure the user completes it at home. Failure to pass the questionnaire will have the user’s results sent via email to HR and the user telling them not to come in. Passing the questionnaire will result in two emails. One email contains a copy of the questionnaire results and the other a QR code that will allow the user to utilize the screening component of our system. The second component of the system is a physical device the user interfaces with, at the office, prior to entering the building. A passive infrared sensor (PIR) is used to initiate the physical part of the screening process. Once the PIR sensor detects motion, a screen that is mounted to the top of the system and encased in a 3D printed box will prompt the user to scan the QR code. Once the second device is activated, the system will verify that the QR code has not been used yet and meets the other requirements through use of the SQL database. The requirements are current date, time span of two hours, and user’s name is not duplicated. If the QR code has already been used, the system will not continue, otherwise the QR code will be saved and the second part of the system will continue. The system will take the user’s temperature through a thermal camera.If the user passes the standards set, the system will dispense hand sanitizer through the use of an optical sensor, relay, and mini submersible pump. The hand sanitizer is dispensed for as long as the optical sensor detects the object. The system will also provide a mask using a micro servo motor and a 3D printed rack and pinion. Our components are controlled by a raspberry pi and an arduino. The entire system is powered by the DC power source provided by an outlet and is fed into two buck converters, which regulate voltage, and is distributed by our printed circuit board (PCB). The system is enclosed in a plywood box with various holes for the components. It is lightweight and therefore easily portable. This design helps make the screening process more efficient while helping stop the spread of the virus.