Subventions et des contributions :

Subvention ou bourse octroyée s'appliquant à plus d'un exercice financier (2017-2018 à 2018-2019).

The advancement of the Internet of Things (IoT) technology makes it possible for mapping air qualityx000D
variations in large spatial scale regions. Deployment of such technology requires large number low-costx000D
sensors. To monitor PM2.5 (suspended aerosol particles with an aerodynamic diameter no more than 2.5x000D
micrometers) distribution in a large area such as the urban area of a city, hundreds of low-cost PM2.5 sensorsx000D
are required. Such sensors mostly are based on light scattering technology, and the readings were calibratedx000D
with standard aerosols by their manufacture. The calibration curves are only valid for certain aerosols underx000D
certain conditions (e.g., humidity, temperature, etc.), which makes their readings questionable when comparingx000D
with the results from mass or beta-attenuation -based technologies used by environmental monitoring agencies.x000D
Therefore, there is need to calibration the low-cost PM2.5 sensors against the certified technologies byx000D
environmental authorities under the real-world conditions so that the sensor network could provide acceptablex000D
monitoring data for air quality assessment.x000D
SensorUp is a leading sensor network provider based on IoT technology that has deployed an air qualityx000D
monitoring network consisting of 200+ PM2.5 sensors to cover 75% of the area of metropolitan Calgary. Thex000D
company is interested in an in-depth, quantitative study of the impacts of aerosols properties andx000D
meteorological factors on the readings of their sensors and developing a method to calibrate the sensors so thatx000D
they can provide comparable reading with the certified instrument being used by Calgary Regional Airshedx000D
Zone (CRAZ). The outcome of this study will not only improve SensorUp's capacity in PM2.5 monitoring, butx000D
the method is also transferable to other instrument/pollutant providing environmental monitoring agencies andx000D
service providers a low-cost option for conducting high-resolution monitoring.