Proximity device for Covid-19 safe distancing

Abstract

The measures put in place to stop the spread of the coronavirus have created a slew of problems for the visually impaired. One significant challenge is the need to keep a safe distance of one metre from others. For the visually challenged, this is a challenging task because they are unable to detect whether others are close to them, let alone determine whether they are standing one metre away.

The purpose of this study is to investigate creating a wearable device that aids the visually impaired in ensuring that there is a distance of one metre between them and others. The device must be able to alert the user when someone is within a one-metre radius, as well as be able to function for a substantial period of time on a single charge. This study compares various physical factors of different types of sensors to determine the most suitable combination of sensors to be used, as well as their positioning on the device.

The final design based on functionality comprises ultrasonic and thermal sensors embedded in a belt-like framework and controlled with a microcontroller. Future work can be done to improve on the device’s aesthetics and user experience.