CoroSheild: A Physical Distancing Evaluator for the Visually Impaired
Jing Quan Peng
David Thompson Secondary
Floor Location : J 126 N

According to the WHO, COVID-19 spreads mainly among people who are within about 6 feet; however, if social distancing measures were reinforced, the chance to catch the virus would decrease to 2.6% (citation). Thus, today, social distancing has gradually become a new way of life globally as the threat of Covid-19 increases. But to the visually impaired, navigating a socially distanced world is a challenge, and they are more likely to contract the virus as a result. To solve this problem, a device is needed to help create a socially distanced world for the visually impaired.

CoroShield, a self-made prototype project using Arduino, machine learning, and Solidworks 3D design and printing, is aimed to help the visually impaired to social distance. If the processing unit detects a human, it would send a signal to the ultrasonic sensor to start measuring. If the measurement is larger than 50cm but smaller than 150cm, it would start warning the person in front via its LCD screen with messages. When the person in front is less than 50cm, it will trigger a beeping buzzer.

The results of this project differed slightly from the original plan. Although the ultrasonic sensor was designed to be very accurate when fewer than 2 meters, the numbers varied during testing. In the normal temperature environment, the distance in which the device displayed its first message was an average of 101 cm instead of the expected 150cm. As well, the second display message appeared at an average of 48 cm instead of 50cm.

Both results were lower than the programmed value due to limits in the current technology. However, the prototype is close to the desired value and will continue to be improved in the future. If this project were to be combined with a thermal imaging sensor made by Panasonic named “GRID-EYE'', it would allow the user not only to measure the temperature in a human but also to track the human two times more accurately using thermal imaging.

Overall, if these improvements were made to CoroShield and it was to be widely replicated and distributed as a product, it will be able to help the visually impaired social distancing more effectively.