期刊
SENSORS
卷 18, 期 5, 页码 -出版社
MDPI
DOI: 10.3390/s18051411
关键词
wireless sensor network; occupational health and safety; sensor arrays; particle sensors; carbon monoxide gas sensors; oxidizing gas sensors; noise sensors; occupational medicine; aerosol exposure; personal exposure
资金
- U.S. National Institute for Occupational Safety and Health [R01 OH010533]
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 R-2 for the particle sensor ranges between 0.98 and 0.99 for particle mass densities up to 300 mu g/m(3). The R-2 for the carbon monoxide sensor is 0.99 for concentrations up to 15 ppm. The R-2 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.
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