Cargando…
Thermal Compensation of Low-Cost MEMS Accelerometers for Tilt Measurements
Low-cost MEMS accelerometers have the potential to be used in a number of tilt-based monitoring applications but have the disadvantage of being very sensitive to temperature variation (thermal drift). In this paper, we analyze the thermal behavior of a low-cost sensor in the range −10 to +45 °C in o...
Autores principales: | , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2018
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6111670/ https://www.ncbi.nlm.nih.gov/pubmed/30072680 http://dx.doi.org/10.3390/s18082536 |
_version_ | 1783350703946727424 |
---|---|
author | Ruzza, Giuseppe Guerriero, Luigi Revellino, Paola Guadagno, Francesco M. |
author_facet | Ruzza, Giuseppe Guerriero, Luigi Revellino, Paola Guadagno, Francesco M. |
author_sort | Ruzza, Giuseppe |
collection | PubMed |
description | Low-cost MEMS accelerometers have the potential to be used in a number of tilt-based monitoring applications but have the disadvantage of being very sensitive to temperature variation (thermal drift). In this paper, we analyze the thermal behavior of a low-cost sensor in the range −10 to +45 °C in order to provide a simple compensation strategy to mitigate this problem. For sensor analysis, we have developed a miniaturized thermal chamber, which was mounted on a tilting device to account for tilt angle variation. The obtained raw data were used to construct low degree polynomial equations that by relating the measurement error induced by thermal drift (i.e., acceleration residuals) to temperature and inclination (of each specific axis), can be used for thermal compensation. To validate our compensation strategy, we performed a field monitoring test and evaluated the compensation performance by calculating RMS errors before and after correction. After compensation, the RMS errors calculated for both the X and Y axes decreased by 96%, indicating the potential of using a simple set of equations to solve common drawbacks that currently make low-cost MEMS sensors unsuitable for tilt-based monitoring applications. |
format | Online Article Text |
id | pubmed-6111670 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-61116702018-08-30 Thermal Compensation of Low-Cost MEMS Accelerometers for Tilt Measurements Ruzza, Giuseppe Guerriero, Luigi Revellino, Paola Guadagno, Francesco M. Sensors (Basel) Article Low-cost MEMS accelerometers have the potential to be used in a number of tilt-based monitoring applications but have the disadvantage of being very sensitive to temperature variation (thermal drift). In this paper, we analyze the thermal behavior of a low-cost sensor in the range −10 to +45 °C in order to provide a simple compensation strategy to mitigate this problem. For sensor analysis, we have developed a miniaturized thermal chamber, which was mounted on a tilting device to account for tilt angle variation. The obtained raw data were used to construct low degree polynomial equations that by relating the measurement error induced by thermal drift (i.e., acceleration residuals) to temperature and inclination (of each specific axis), can be used for thermal compensation. To validate our compensation strategy, we performed a field monitoring test and evaluated the compensation performance by calculating RMS errors before and after correction. After compensation, the RMS errors calculated for both the X and Y axes decreased by 96%, indicating the potential of using a simple set of equations to solve common drawbacks that currently make low-cost MEMS sensors unsuitable for tilt-based monitoring applications. MDPI 2018-08-02 /pmc/articles/PMC6111670/ /pubmed/30072680 http://dx.doi.org/10.3390/s18082536 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Ruzza, Giuseppe Guerriero, Luigi Revellino, Paola Guadagno, Francesco M. Thermal Compensation of Low-Cost MEMS Accelerometers for Tilt Measurements |
title | Thermal Compensation of Low-Cost MEMS Accelerometers for Tilt Measurements |
title_full | Thermal Compensation of Low-Cost MEMS Accelerometers for Tilt Measurements |
title_fullStr | Thermal Compensation of Low-Cost MEMS Accelerometers for Tilt Measurements |
title_full_unstemmed | Thermal Compensation of Low-Cost MEMS Accelerometers for Tilt Measurements |
title_short | Thermal Compensation of Low-Cost MEMS Accelerometers for Tilt Measurements |
title_sort | thermal compensation of low-cost mems accelerometers for tilt measurements |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6111670/ https://www.ncbi.nlm.nih.gov/pubmed/30072680 http://dx.doi.org/10.3390/s18082536 |
work_keys_str_mv | AT ruzzagiuseppe thermalcompensationoflowcostmemsaccelerometersfortiltmeasurements AT guerrieroluigi thermalcompensationoflowcostmemsaccelerometersfortiltmeasurements AT revellinopaola thermalcompensationoflowcostmemsaccelerometersfortiltmeasurements AT guadagnofrancescom thermalcompensationoflowcostmemsaccelerometersfortiltmeasurements |