Online decorrelation of humidity and temperature in chemical sensors for continuous monitoring
A method for online decorrelation of chemical sensor signals from the effects of environmental humidity and temperature variations is proposed. The goal is to improve the accuracy of electronic nose measurements for continuous monitoring by processing data from simultaneous readings of environmental...
| Autores: | , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2016 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/119106 |
| Acceso en línea: | https://hdl.handle.net/2117/119106 https://dx.doi.org/10.1016/j.chemolab.2016.07.004 |
| Access Level: | acceso abierto |
| Palabra clave: | Chemical detectors Electronic nose Chemical sensors Humidity Temperature Decorrelation Wireless e-nose MOX sensors Energy band model Home monitoring Detectors -- Aparells i instruments Sensors químics Àrees temàtiques de la UPC::Enginyeria electrònica::Instrumentació i mesura::Sensors i actuadors |
| id |
ES_98604c93cf2ef8e06caacee36ee5559d |
|---|---|
| oai_identifier_str |
oai:upcommons.upc.edu:2117/119106 |
| network_acronym_str |
ES |
| network_name_str |
España |
| repository_id_str |
|
| spelling |
Online decorrelation of humidity and temperature in chemical sensors for continuous monitoringHuerta, RamonMosqueiro, ThiagoFonollosa Magrinyà, Jordi|||0000-0001-8854-8588Rulkov, NikolaiRodriguez Lujan, IreneChemical detectorsElectronic noseChemical sensorsHumidityTemperatureDecorrelationWireless e-noseMOX sensorsEnergy band modelHome monitoringDetectors -- Aparells i instrumentsSensors químicsÀrees temàtiques de la UPC::Enginyeria electrònica::Instrumentació i mesura::Sensors i actuadorsA method for online decorrelation of chemical sensor signals from the effects of environmental humidity and temperature variations is proposed. The goal is to improve the accuracy of electronic nose measurements for continuous monitoring by processing data from simultaneous readings of environmental humidity and temperature. The electronic nose setup built for this study included eight metal-oxide sensors, temperature and humidity sensors with a wireless communication link to external computer. This wireless electronic nose was used to monitor the air for two years in the residence of one of the authors and it collected data continuously during 537 days with a sampling rate of 1 sample per second. To estimate the effects of variations in air humidity and temperature on the chemical sensors' signals, we used a standard energy band model for an n-type metal-oxide (MOX) gas sensor. The main assumption of the model is that variations in sensor conductivity can be expressed as a nonlinear function of changes in the semiconductor energy bands in the presence of external humidity and temperature variations. Fitting this model to the collected data, we confirmed that the most statistically significant factors are humidity changes and correlated changes of temperature and humidity. This simple model achieves excellent accuracy with a coefficient of determination R2 close to 1. To show how the humidity–temperature correction model works for gas discrimination, we constructed a model for online discrimination among banana, wine and baseline response. This shows that pattern recognition algorithms improve performance and reliability by including the filtered signal of the chemical sensors.20162016-07-1520182018-07-09journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/119106https://dx.doi.org/10.1016/j.chemolab.2016.07.004reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/1191062026-05-27T15:37:01Z |
| dc.title.none.fl_str_mv |
Online decorrelation of humidity and temperature in chemical sensors for continuous monitoring |
| title |
Online decorrelation of humidity and temperature in chemical sensors for continuous monitoring |
| spellingShingle |
Online decorrelation of humidity and temperature in chemical sensors for continuous monitoring Huerta, Ramon Chemical detectors Electronic nose Chemical sensors Humidity Temperature Decorrelation Wireless e-nose MOX sensors Energy band model Home monitoring Detectors -- Aparells i instruments Sensors químics Àrees temàtiques de la UPC::Enginyeria electrònica::Instrumentació i mesura::Sensors i actuadors |
| title_short |
Online decorrelation of humidity and temperature in chemical sensors for continuous monitoring |
| title_full |
Online decorrelation of humidity and temperature in chemical sensors for continuous monitoring |
| title_fullStr |
Online decorrelation of humidity and temperature in chemical sensors for continuous monitoring |
| title_full_unstemmed |
Online decorrelation of humidity and temperature in chemical sensors for continuous monitoring |
| title_sort |
Online decorrelation of humidity and temperature in chemical sensors for continuous monitoring |
| dc.creator.none.fl_str_mv |
Huerta, Ramon Mosqueiro, Thiago Fonollosa Magrinyà, Jordi|||0000-0001-8854-8588 Rulkov, Nikolai Rodriguez Lujan, Irene |
| author |
Huerta, Ramon |
| author_facet |
Huerta, Ramon Mosqueiro, Thiago Fonollosa Magrinyà, Jordi|||0000-0001-8854-8588 Rulkov, Nikolai Rodriguez Lujan, Irene |
| author_role |
author |
| author2 |
Mosqueiro, Thiago Fonollosa Magrinyà, Jordi|||0000-0001-8854-8588 Rulkov, Nikolai Rodriguez Lujan, Irene |
| author2_role |
author author author author |
| dc.subject.none.fl_str_mv |
Chemical detectors Electronic nose Chemical sensors Humidity Temperature Decorrelation Wireless e-nose MOX sensors Energy band model Home monitoring Detectors -- Aparells i instruments Sensors químics Àrees temàtiques de la UPC::Enginyeria electrònica::Instrumentació i mesura::Sensors i actuadors |
| topic |
Chemical detectors Electronic nose Chemical sensors Humidity Temperature Decorrelation Wireless e-nose MOX sensors Energy band model Home monitoring Detectors -- Aparells i instruments Sensors químics Àrees temàtiques de la UPC::Enginyeria electrònica::Instrumentació i mesura::Sensors i actuadors |
| description |
A method for online decorrelation of chemical sensor signals from the effects of environmental humidity and temperature variations is proposed. The goal is to improve the accuracy of electronic nose measurements for continuous monitoring by processing data from simultaneous readings of environmental humidity and temperature. The electronic nose setup built for this study included eight metal-oxide sensors, temperature and humidity sensors with a wireless communication link to external computer. This wireless electronic nose was used to monitor the air for two years in the residence of one of the authors and it collected data continuously during 537 days with a sampling rate of 1 sample per second. To estimate the effects of variations in air humidity and temperature on the chemical sensors' signals, we used a standard energy band model for an n-type metal-oxide (MOX) gas sensor. The main assumption of the model is that variations in sensor conductivity can be expressed as a nonlinear function of changes in the semiconductor energy bands in the presence of external humidity and temperature variations. Fitting this model to the collected data, we confirmed that the most statistically significant factors are humidity changes and correlated changes of temperature and humidity. This simple model achieves excellent accuracy with a coefficient of determination R2 close to 1. To show how the humidity–temperature correction model works for gas discrimination, we constructed a model for online discrimination among banana, wine and baseline response. This shows that pattern recognition algorithms improve performance and reliability by including the filtered signal of the chemical sensors. |
| publishDate |
2016 |
| dc.date.none.fl_str_mv |
2016 2016-07-15 2018 2018-07-09 |
| dc.type.none.fl_str_mv |
journal article http://purl.org/coar/resource_type/c_6501 AM http://purl.org/coar/version/c_ab4af688f83e57aa |
| dc.type.openaire.fl_str_mv |
info:eu-repo/semantics/article |
| format |
article |
| dc.identifier.none.fl_str_mv |
https://hdl.handle.net/2117/119106 https://dx.doi.org/10.1016/j.chemolab.2016.07.004 |
| url |
https://hdl.handle.net/2117/119106 https://dx.doi.org/10.1016/j.chemolab.2016.07.004 |
| dc.language.none.fl_str_mv |
Inglés eng |
| language_invalid_str_mv |
Inglés |
| language |
eng |
| dc.rights.none.fl_str_mv |
open access http://purl.org/coar/access_right/c_abf2 |
| dc.rights.openaire.fl_str_mv |
info:eu-repo/semantics/openAccess |
| rights_invalid_str_mv |
open access http://purl.org/coar/access_right/c_abf2 |
| eu_rights_str_mv |
openAccess |
| dc.format.none.fl_str_mv |
application/pdf |
| dc.source.none.fl_str_mv |
reponame:UPCommons. Portal del coneixement obert de la UPC instname:Universitat Politècnica de Catalunya (UPC) |
| instname_str |
Universitat Politècnica de Catalunya (UPC) |
| reponame_str |
UPCommons. Portal del coneixement obert de la UPC |
| collection |
UPCommons. Portal del coneixement obert de la UPC |
| repository.name.fl_str_mv |
|
| repository.mail.fl_str_mv |
|
| _version_ |
1869414188220153856 |
| score |
15,300724 |