Repositorio
Institucional

Munoz, Carlos

Huircan, Juan

Jaramillo, Francisco

Boso, Alex

Calibration of Sensor Network for Outdoor Measurement of PM2.5 on High Wood-Heating Smoke in Temuco City

MDPI

PROCESSES

en

In order to ascertain the spatial and temporal changes in the air quality in Temuco City, Chile, we created and installed a network of inexpensive sensors to detect PM2.5 particulate matter. The 21 measurement points deployed were based on a low-cost Sensiron SPS30 sensor, complemented with temperature and humidity sensors, an Esp32 microcontroller card with LoRa and WiFi wireless communication interface, and a solar charging unit. The units were calibrated using an airtight combustion chamber with a Grimm 11-E as a reference unit. The calibration procedure fits the parameters of a calibration model to map the raw low-cost particle-material measurements into reliable calibrated values. The measurements showed that the concentrations of fine particulate material recorded in Temuco present a high temporal and spatial variability. In critical contamination episodes, pollution reaches values as high as 354 mu g/m(3), and at the same time, it reaches 50 mu g/m(3) in other parts of the city. The contamination episodes show a similar trend around the city, and the peaks are in the time interval from 07:00 PM to 1:00 AM. In the winter, this time of day coincides with when families are usually home and there are low temperatures outside.

2023

artículo original

10.3390/pr11082338

PDF

air pollution

low-cost sensor

particle-matter calibration

spatial-temporal distribution

Ingeniería

contaminación del aire

sensor de bajo costo

calibración de partículas

distribución espacio-temporal

artículo original

versión publicada

CC BY 4.0

CC BY 4.0

acceso abierto

acceso abierto

WOS:001057119000001

verde# dorado

Ingeniería

ANID-FONDECYT 1220178

ANID-BASAL FB210024

ANID FONDECYT 1220178

ANID BASAL FB210024