Design and fabrication of autonomous disinfectant robot
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Date
2022-08
Journal Title
Journal ISSN
Volume Title
Publisher
UMT Lahore
Abstract
Epidemic diseases have adverse effects on the health of people. Diseases like COVID-19 spread through contact; for this purpose, there should be a system to limit the spread using disinfection techniques. For this purpose, a disinfectant robot was designed and fabricated. It has spray movement in two directions: one in the horizontal direction with about 180 degrees of movement, and the other in the vertical direction, which uses a timing belt mechanism passing over the pulley shaft of a stepper motor, while a servo motor is used for horizontal movement. The mechanism is capable of moving the spraying system up to a height of about 45 cm from its lowest position. It has obstacle detection capability with autonomous movement of the platform. This robot moves autonomously along a path. Static structural analysis was also performed on ANSYS, showing that the total deformation of the mechanism with the timing belt is 0.00011 m. Another analysis was performed on the base of the robot with the respective weights applied, showing a total deformation of 0.00013 m and a factor of safety of 15, indicating that the design is safe. Final tests indicate that the robot effectively moves autonomously through the path and detects obstacles when they are 0.5 to 0.8 ft away. Experiments indicate that the robot can spray disinfectant liquid 3 to 4 ft away from it with a flow rate of 0.096 liters per minute.