Measuring dynamic signals with direct sensor-to-microcontroller interfaces applied to a magnetoresistive sensor

This paper evaluates the performance of direct interface circuits (DIC), where the sensor is directly connected to a microcontroller, when a resistive sensor subjected to dynamic changes is measured. The theoretical analysis provides guidelines for the selection of the components taking into account...

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Autores: Sifuentes, Ernesto, González Landaeta, Rafael, Cota Ruiz, Juan, Reverter Cubarsí, Ferran|||0000-0003-1653-0519
Tipo de recurso: artículo
Fecha de publicación:2017
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:2117/116867
Acceso en línea:https://hdl.handle.net/2117/116867
https://dx.doi.org/10.3390/s17051150
Access Level:acceso abierto
Palabra clave:Detectors
Dynamic measurements
Electrocardiogram
Magnetoresistance
Microcontroller
Resistive sensor
Sensor electronic interface
Àrees temàtiques de la UPC::Enginyeria electrònica
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spelling Measuring dynamic signals with direct sensor-to-microcontroller interfaces applied to a magnetoresistive sensorSifuentes, ErnestoGonzález Landaeta, RafaelCota Ruiz, JuanReverter Cubarsí, Ferran|||0000-0003-1653-0519DetectorsDynamic measurementsElectrocardiogramMagnetoresistanceMicrocontrollerResistive sensorSensor electronic interfaceDetectorsÀrees temàtiques de la UPC::Enginyeria electrònicaThis paper evaluates the performance of direct interface circuits (DIC), where the sensor is directly connected to a microcontroller, when a resistive sensor subjected to dynamic changes is measured. The theoretical analysis provides guidelines for the selection of the components taking into account both the desired resolution and the bandwidth of the input signal. Such an analysis reveals that there is a trade-off between the sampling frequency and the resolution of the measurement, and this depends on the selected value of the capacitor that forms the RC circuit together with the sensor resistance. This performance is then experimentally proved with a DIC measuring a magnetoresistive sensor exposed to a magnetic field of different frequencies, amplitudes, and waveforms. A sinusoidal magnetic field up to 1 kHz can be monitored with a resolution of eight bits and a sampling frequency of around 10 kSa/s. If a higher resolution is desired, the sampling frequency has to be lower, thus limiting the bandwidth of the dynamic signal under measurement. The DIC is also applied to measure an electrocardiogram-type signal and its QRS complex is well identified, which enables the estimation, for instance, of the heart rate.Multidisciplinary Digital Publishing Institute (MDPI)20172017-05-1820182018-05-02journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/116867https://dx.doi.org/10.3390/s17051150reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivs 3.0 Spainhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/1168672026-05-27T15:37:01Z
dc.title.none.fl_str_mv Measuring dynamic signals with direct sensor-to-microcontroller interfaces applied to a magnetoresistive sensor
title Measuring dynamic signals with direct sensor-to-microcontroller interfaces applied to a magnetoresistive sensor
spellingShingle Measuring dynamic signals with direct sensor-to-microcontroller interfaces applied to a magnetoresistive sensor
Sifuentes, Ernesto
Detectors
Dynamic measurements
Electrocardiogram
Magnetoresistance
Microcontroller
Resistive sensor
Sensor electronic interface
Detectors
Àrees temàtiques de la UPC::Enginyeria electrònica
title_short Measuring dynamic signals with direct sensor-to-microcontroller interfaces applied to a magnetoresistive sensor
title_full Measuring dynamic signals with direct sensor-to-microcontroller interfaces applied to a magnetoresistive sensor
title_fullStr Measuring dynamic signals with direct sensor-to-microcontroller interfaces applied to a magnetoresistive sensor
title_full_unstemmed Measuring dynamic signals with direct sensor-to-microcontroller interfaces applied to a magnetoresistive sensor
title_sort Measuring dynamic signals with direct sensor-to-microcontroller interfaces applied to a magnetoresistive sensor
dc.creator.none.fl_str_mv Sifuentes, Ernesto
González Landaeta, Rafael
Cota Ruiz, Juan
Reverter Cubarsí, Ferran|||0000-0003-1653-0519
author Sifuentes, Ernesto
author_facet Sifuentes, Ernesto
González Landaeta, Rafael
Cota Ruiz, Juan
Reverter Cubarsí, Ferran|||0000-0003-1653-0519
author_role author
author2 González Landaeta, Rafael
Cota Ruiz, Juan
Reverter Cubarsí, Ferran|||0000-0003-1653-0519
author2_role author
author
author
dc.subject.none.fl_str_mv Detectors
Dynamic measurements
Electrocardiogram
Magnetoresistance
Microcontroller
Resistive sensor
Sensor electronic interface
Detectors
Àrees temàtiques de la UPC::Enginyeria electrònica
topic Detectors
Dynamic measurements
Electrocardiogram
Magnetoresistance
Microcontroller
Resistive sensor
Sensor electronic interface
Detectors
Àrees temàtiques de la UPC::Enginyeria electrònica
description This paper evaluates the performance of direct interface circuits (DIC), where the sensor is directly connected to a microcontroller, when a resistive sensor subjected to dynamic changes is measured. The theoretical analysis provides guidelines for the selection of the components taking into account both the desired resolution and the bandwidth of the input signal. Such an analysis reveals that there is a trade-off between the sampling frequency and the resolution of the measurement, and this depends on the selected value of the capacitor that forms the RC circuit together with the sensor resistance. This performance is then experimentally proved with a DIC measuring a magnetoresistive sensor exposed to a magnetic field of different frequencies, amplitudes, and waveforms. A sinusoidal magnetic field up to 1 kHz can be monitored with a resolution of eight bits and a sampling frequency of around 10 kSa/s. If a higher resolution is desired, the sampling frequency has to be lower, thus limiting the bandwidth of the dynamic signal under measurement. The DIC is also applied to measure an electrocardiogram-type signal and its QRS complex is well identified, which enables the estimation, for instance, of the heart rate.
publishDate 2017
dc.date.none.fl_str_mv 2017
2017-05-18
2018
2018-05-02
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/116867
https://dx.doi.org/10.3390/s17051150
url https://hdl.handle.net/2117/116867
https://dx.doi.org/10.3390/s17051150
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
Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
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
Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute (MDPI)
publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute (MDPI)
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_ 1869411797370404864
score 15.300724

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