UV C Sterilization Autobot

Due to the spread of the COVID19 virus, the research team is seeking ways to reduce its transmission as well as that of various bacteria within buildings using Ultraviolet-C (UVC) radiation, which is effective in killing viruses. The research team has designed and built an automatic robot to kill disease-causing germs inside the building using UVC lamps. The robot is driven by two wheels and can be controlled in three modes: 1) remotely controlled by radio waves, or 2) controlled by a mobile phone/computer through a Wi-Fi signal, which allows the user to see a live stream image from the robot's front camera, or 3) automatically controlled to move parallel to walls (Wall keeping mode) using PD control. The distance between the robot and the wall, measured by ultrasonic sensors, is maintained at 20-40 cm, after which the UVC lamps are turned on at distance of 26-50 cm for 12.5-18 seconds to kill germs in areas such as door handles and elevator buttons, reducing the risk of transmission through contact with surfaces within the building. This UVC autoboot has effective eradication bacteria 100% within 30 minutes. The UVC autobot has effective eradication bacteria in yeast 99.99% for approximately 30 minutes.