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Título: | Distributed multi-scale calibration of low-cost ozone sensors in wireless sensor networks |
Autor: | Barceló-Ordinas, José María; Ferrer-Cid, Pau; García-Vidal, Jorge; Ripoll, Anna CSIC; Viana, Mar CSIC ORCID | Palabras clave: | Air pollution sensors Calibration Error estimation Low-cost sensors Wireless sensor networks |
Fecha de publicación: | 1-jun-2019 | Editor: | Multidisciplinary Digital Publishing Institute | Citación: | Sensors 19 (11) 2503 (2019) | Resumen: | New advances in sensor technologies and communications in wireless sensor networks have favored the introduction of low-cost sensors for monitoring air quality applications. In this article, we present the results of the European project H2020 CAPTOR, where three testbeds with sensors were deployed to capture tropospheric ozone concentrations. One of the biggest challenges was the calibration of the sensors, as the manufacturer provides them without calibrating. Throughout the paper, we show how short-term calibration using multiple linear regression produces good calibrated data, but instead produces biases in the calculated long-term concentrations. To mitigate the bias, we propose a linear correction based on Kriging estimation of the mean and standard deviation of the long-term ozone concentrations, thus correcting the bias presented by the sensors. © 2019, MDPI AG. All rights reserved. | Versión del editor: | https://doi.org/10.3390/s19112503 | URI: | http://hdl.handle.net/10261/200321 | DOI: | 10.3390/s19112503 | Referencias: | Barceló-Ordinas, José María; Ferrer-Cid, Pau; García Vidal, Jorge; Viana, Mar; Ripoll, Anna; 2021; H2020 project CAPTOR: raw data collected by low-cost MOX ozone sensors in a real air pollution monitoring network [Dataset]; Zenodo; Version 1; https://doi.org/ 10.5281/zenodo.4570449 |
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Distributed Multi-Scale Calibration of Low-Cost Ozone Sensors in Wireless Sensor Networks.pdf | Artículo principal | 5,12 MB | Adobe PDF | Visualizar/Abrir |
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