A Retrospective Analysis of Indoor CO 2 Measurements Obtained with a Mobile Robot during the COVID-19 Pandemic.

This work presents a retrospective analysis of indoor CO 2 measurements obtained with a mobile robot in an educational building after the COVID-19 lockdown (May 2021), at a time when public activities resumed with mandatory local pandemic restrictions. The robot-based CO 2 measurement system was assessed as an alternative to the deployment of a net of sensors in a building in the pandemic period, in which there was a global stock outage of CO 2 sensors. The analysis of the obtained measurements confirms that a mobile system can be used to obtain interpretable information on the CO 2 levels inside the rooms of a building during a pandemic outbreak.