Low-cost Environmental Sensors

Our group has pioneered the development, and application of low-cost air quality sensors. Our focus has been on developing sensor packages that can measure particulate matter (PM), NOx and ozone (O3), and we have designed robust sensor packages for indoor, outdoor, and personal exposure monitoring. We have also developed methodologies to calibrate sensors (Zheng et al., 2018), and maintain sensor networks (Zheng et al., 2019). We have also deployed sensors in health studies and have been able to show that indoor air filtration, when done properly, has clear health benefits (Cui et al., 2020). In addition, we have designed water quality sensors, as well as sensors to detect solar panel soiling (Valerino et al., 2020) and continue to work on the development of a wide variety of environmental sensors for applications that are focused on improving environmental and human health.

Highlighted peer-reviewed publications:

Cui, X. et al., Impacts of bedroom particulate matter filtration on airway pathophysiology in Children with Asthma, JAMA Ped., doi:10.1001/jamapediatrics, 2020.

Barkjohn, K.K, et al., Real-time Measurements of PM2.5 and Ozone to Assess the Effectiveness of Residential Indoor Air Filtration in Shanghai Homes, Indoor Air, doi.org/10.1111/ina.12716, 2020.  

Zheng, T., Bergin, M.H., Johnson, K.K., Tripathi, S.N., Shirodkar, S., Landis, M., Sutaria, R., Carlson, D.E., Field evaluation of low cost particulate matter sensors in high and low concentration environments, Atmos. Meas. Tech., 11, 8, 4823-4846, 2018.

Zheng, T. S.; Bergin, M. H.; Sutaria, R.; Tripathi, S. N.; Caldow, R.; Carlson, D. E., Gaussian process regression model for dynamically calibrating and surveilling a wireless low-cost particulate matter sensor network in Delhi. Atmospheric Measurement Techniques,12 (9), 5161-5181, 2019.

Valerino, M., Bergin, M.H., Ghoroi, C., Ratnaparkhi, A., Smestad, G.P., Low-cost solar PV soiling sensor validation and size resolved soiling impacts: A comprehensive field study in Western India, Solar Energy, 204(1), 307-315, 2020.