A Low Frequency FBG Accelerometer with Symmetrical Bended Spring Plates

To meet the requirements for low-frequency vibration monitoring, a new type of FBG (fiber Bragg grating) accelerometer with a bended spring plate is proposed. Two symmetrical bended spring plates are used as elastic elements, which drive the FBG to produce axial strains equal in magnitude but opposi...

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Detalles Bibliográficos
Autores principales: Liu, Fufei, Dai, Yutang, Karanja, Joseph Muna, Yang, Minghong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2017
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5298777/
https://www.ncbi.nlm.nih.gov/pubmed/28117740
http://dx.doi.org/10.3390/s17010206
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author Liu, Fufei
Dai, Yutang
Karanja, Joseph Muna
Yang, Minghong
author_facet Liu, Fufei
Dai, Yutang
Karanja, Joseph Muna
Yang, Minghong
author_sort Liu, Fufei
collection PubMed
description To meet the requirements for low-frequency vibration monitoring, a new type of FBG (fiber Bragg grating) accelerometer with a bended spring plate is proposed. Two symmetrical bended spring plates are used as elastic elements, which drive the FBG to produce axial strains equal in magnitude but opposite in direction when exciting vibrations exist, leading to doubling the wavelength shift of the FBG. The mechanics model and a numerical method are presented in this paper, with which the influence of the structural parameters on the sensitivity and the eigenfrequency are discussed. The test results show that the sensitivity of the accelerometer is more than 1000 pm/g when the frequency is within the 0.7–20 Hz range.
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spelling pubmed-52987772017-02-10 A Low Frequency FBG Accelerometer with Symmetrical Bended Spring Plates Liu, Fufei Dai, Yutang Karanja, Joseph Muna Yang, Minghong Sensors (Basel) Article To meet the requirements for low-frequency vibration monitoring, a new type of FBG (fiber Bragg grating) accelerometer with a bended spring plate is proposed. Two symmetrical bended spring plates are used as elastic elements, which drive the FBG to produce axial strains equal in magnitude but opposite in direction when exciting vibrations exist, leading to doubling the wavelength shift of the FBG. The mechanics model and a numerical method are presented in this paper, with which the influence of the structural parameters on the sensitivity and the eigenfrequency are discussed. The test results show that the sensitivity of the accelerometer is more than 1000 pm/g when the frequency is within the 0.7–20 Hz range. MDPI 2017-01-22 /pmc/articles/PMC5298777/ /pubmed/28117740 http://dx.doi.org/10.3390/s17010206 Text en © 2017 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
Liu, Fufei
Dai, Yutang
Karanja, Joseph Muna
Yang, Minghong
A Low Frequency FBG Accelerometer with Symmetrical Bended Spring Plates
title A Low Frequency FBG Accelerometer with Symmetrical Bended Spring Plates
title_full A Low Frequency FBG Accelerometer with Symmetrical Bended Spring Plates
title_fullStr A Low Frequency FBG Accelerometer with Symmetrical Bended Spring Plates
title_full_unstemmed A Low Frequency FBG Accelerometer with Symmetrical Bended Spring Plates
title_short A Low Frequency FBG Accelerometer with Symmetrical Bended Spring Plates
title_sort low frequency fbg accelerometer with symmetrical bended spring plates
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5298777/
https://www.ncbi.nlm.nih.gov/pubmed/28117740
http://dx.doi.org/10.3390/s17010206
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