Use of Multiple Low Cost Carbon Dioxide Sensors to Measure Exhaled Breath Distribution with Face Mask Type and Wearing Behaviour

The use of cloth face coverings and masks has become widespread in light the COVID-19 pandemic. This paper presents a method using low cost wirelessly connected carbon dioxide (CO2) sensors to measure effects properly improperly worn on concentration distribution exhaled breath around face. Four types are used two indoor environment scenarios. CO2 as proxy for is being measured with Sensirion SCD30 sensor, data transferred base station. four directions at various distances from head subject, interpolated create spatial heat maps concentration. Statistical analysis Friedman’s variance (ANOVA) test carried out determine validity null hypotheses (i.e., same) between different experiment conditions. Results suggest concentrations vary little type mask used; however, improper results statistically visual interpolation tool could provide an effective demonstrating importance proper wearing public.