Low-Cost UVBot Using SLAM to Mitigate the Spread of Noroviruses in Occupational Spaces

Fanxin Wang, Harris Junaid Nisar, Yao Li, Elbashir Araud, Thanh H. Nguyen, T Kesavadas

Research output: Contribution to journalArticlepeer-review


Noroviruses (NoVs) cause over 90% of non-bacterial gastroenteritis outbreaks in adults and children in developed countries. Therefore, there is a need for approaches to mitigate the transmission of noroviruses in workplaces to reduce their substantial health burden. We developed and validated a low-cost, autonomous robot called the UVBot to disinfect occupational spaces using ultraviolet (UV) lamps. The total cost of the UVBOT is less than USD 1000, which is much lower than existing commercial robots that cost as much as USD 35,000. The user-friendly desktop application allows users to control the robot remotely, check the disinfection map, and add virtual walls to the map. A 2D LiDAR and a simultaneous localization and mapping (SLAM) algorithm was used to generate a map of the space being disinfected. Tulane virus (TV), a human norovirus surrogate, was used to validate the UVBot’s effectiveness. TV was deposited on a painted drywall and exposed to UV radiation at different doses. A 3-log (99.9%) reduction of TV infectivity was achieved at a UV dose of 45 mJ/cm2. We further calculated the sanitizing speed as 3.5 cm/s and the efficient sanitizing distance reached up to 40 cm from the UV bulb. The design, software, and environment test data are available to the public so that any organization with minimal engineering capabilities can reproduce the UVBot system.

Original languageEnglish (US)
Article number8926
Issue number22
StatePublished - Nov 2022


  • robot disinfection
  • UV light
  • norovirus
  • SLAM
  • autonomous robot

ASJC Scopus subject areas

  • Analytical Chemistry
  • Information Systems
  • Biochemistry
  • Atomic and Molecular Physics, and Optics
  • Instrumentation
  • Electrical and Electronic Engineering


Dive into the research topics of 'Low-Cost UVBot Using SLAM to Mitigate the Spread of Noroviruses in Occupational Spaces'. Together they form a unique fingerprint.

Cite this