The outbreak of COVID-19 has increased the public’s interest in various chemical and non-chemical disinfection methods. One of the most promising and quickest surface disinfection methods is irradiation by UV-C light which is an existing technology used commonly.
Alongside professional usage, UV-C disinfection is getting more and more attention for personal usage at home or on the go. However, most currently available devices are cheap, unreliable and often dangerous to use.
We propose to build a small, hand-held, battery powered, LED based UV-C surface disinfecting device which aims to solve the issues with the lower-quality devices flooding the market. Firstly, the device has an UV-C output power of 250 mW which is capable to kill viruses and bacteria at a quick rate. Most similar devices are not that powerful.
Secondly, we are planning to use a carefully engineered reflecting sheet, which focuses the UV-C light to a narrow line, increasing the light intensity, hence increasing the disinfection rate. This gives it a focused laser-effect.
Thirdly, the device is fitted with numerous safety features which protect the user. A proximity sensor measures the distance between the device and the surface to be disinfected, which acts as an interlock. If the device is held at an incorrect distance, the UV-C light cannot be turned on.
Furthermore, the light emission is stopped as soon as the device is moved too closely toward or too from the surface. An accelerometer and gyroscope continuously tracks the motion of the device and shuts the light emission down in case of any sudden, unwanted movement. This prevents people from waving it around in a way that could hurt people’s eyes.Follow The Development Of This Project Buy Now