Low-Cost, Distributed Environmental Monitors for Factory Worker Health

Sensors
Geb ThomasThomas M Peters

Abstract

An integrated network of environmental monitors was developed to continuously measure several airborne hazards in a manufacturing facility. The monitors integrated low-cost sensors to measure particulate matter, carbon monoxide, ozone and nitrogen dioxide, noise, temperature and humidity. The monitors were developed and tested in situ for three months in several overlapping deployments, before a full cohort of 40 was deployed in a heavy vehicle manufacturing facility for a year of data collection. The monitors collect data from each sensor and report them to a central database every 5 min. The work includes an experimental validation of the particle, gas and noise monitors. The R² for the particle sensor ranges between 0.98 and 0.99 for particle mass densities up to 300 μg/m³. The R² for the carbon monoxide sensor is 0.99 for concentrations up to 15 ppm. The R² for the oxidizing gas sensor is 0.98 over the sensitive range from 20 to 180 ppb. The noise monitor is precise within 1% between 65 and 95 dBA. This work demonstrates the capability of distributed monitoring as a means to examine exposure variability in both space and time, building an important preliminary step towards a new approach for workplace hazard monitoring.

References

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Citations

Feb 5, 2019·Annals of Work Exposures and Health·Christopher ZuidemaKirsten Koehler
Dec 5, 2019·Journal of Occupational and Environmental Medicine·Pamela L KrahlTimothy M Mallon
Dec 19, 2019·Sensors·Barouch GiechaskielPiotr Bielaczyc
Aug 13, 2020·Sensors·Sergio Mateos-AnguloSunil L Khemchandani
Jun 6, 2019·Journal of Exposure Science & Environmental Epidemiology·Christopher ZuidemaKirsten Koehler
Jun 30, 2019·Journal of Occupational and Environmental Hygiene·Christopher ZuidemaThomas M Peters
Nov 22, 2020·Environmental Science and Pollution Research International·Hongsheng ZhangZhengwei Long

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