Cargando…
Precisely Automatic Time Window Locating for an Interferometric Fiber-Optic Sensor Array Based on a TDM Scheme
Interferometric fiber-optic sensors are often organized in the form of large-scale arrays by lending the technique of time division multiplexing (TDM) to reduce the system cost. Discriminating the time windows for different sensor units is the prerequisite to successfully demodulate the sensing mess...
Autores principales: | , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2018
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6211038/ https://www.ncbi.nlm.nih.gov/pubmed/30347740 http://dx.doi.org/10.3390/s18103548 |
_version_ | 1783367252715765760 |
---|---|
author | Cui, Ke Ren, Zhongjie Qian, Jieyu Peng, Wenjun Zhu, Rihong |
author_facet | Cui, Ke Ren, Zhongjie Qian, Jieyu Peng, Wenjun Zhu, Rihong |
author_sort | Cui, Ke |
collection | PubMed |
description | Interferometric fiber-optic sensors are often organized in the form of large-scale arrays by lending the technique of time division multiplexing (TDM) to reduce the system cost. Discriminating the time windows for different sensor units is the prerequisite to successfully demodulate the sensing message, but it traditionally calls for a very time-consuming manual calibration process. To combat this problem, a novel automatic time window locating method is proposed in this paper. It introduces the concept of shape function and carries out the cross-correlation operation between the shape function and the sensor signal. The shape function is defined as the function whose curve profile reflects the main data characteristics of the sensor signal. The time window information is then extracted from the correlation result. This whole process is carried out automatically by the interrogation controller of the sensor system without any manual intervene. Experiments are conducted to validate this method. The proposed method can greatly reduce the complexity of locating time windows in large-scale TDM sensor arrays, and make the practical use of the TDM scheme much more convenient. |
format | Online Article Text |
id | pubmed-6211038 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-62110382018-11-02 Precisely Automatic Time Window Locating for an Interferometric Fiber-Optic Sensor Array Based on a TDM Scheme Cui, Ke Ren, Zhongjie Qian, Jieyu Peng, Wenjun Zhu, Rihong Sensors (Basel) Article Interferometric fiber-optic sensors are often organized in the form of large-scale arrays by lending the technique of time division multiplexing (TDM) to reduce the system cost. Discriminating the time windows for different sensor units is the prerequisite to successfully demodulate the sensing message, but it traditionally calls for a very time-consuming manual calibration process. To combat this problem, a novel automatic time window locating method is proposed in this paper. It introduces the concept of shape function and carries out the cross-correlation operation between the shape function and the sensor signal. The shape function is defined as the function whose curve profile reflects the main data characteristics of the sensor signal. The time window information is then extracted from the correlation result. This whole process is carried out automatically by the interrogation controller of the sensor system without any manual intervene. Experiments are conducted to validate this method. The proposed method can greatly reduce the complexity of locating time windows in large-scale TDM sensor arrays, and make the practical use of the TDM scheme much more convenient. MDPI 2018-10-19 /pmc/articles/PMC6211038/ /pubmed/30347740 http://dx.doi.org/10.3390/s18103548 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 Cui, Ke Ren, Zhongjie Qian, Jieyu Peng, Wenjun Zhu, Rihong Precisely Automatic Time Window Locating for an Interferometric Fiber-Optic Sensor Array Based on a TDM Scheme |
title | Precisely Automatic Time Window Locating for an Interferometric Fiber-Optic Sensor Array Based on a TDM Scheme |
title_full | Precisely Automatic Time Window Locating for an Interferometric Fiber-Optic Sensor Array Based on a TDM Scheme |
title_fullStr | Precisely Automatic Time Window Locating for an Interferometric Fiber-Optic Sensor Array Based on a TDM Scheme |
title_full_unstemmed | Precisely Automatic Time Window Locating for an Interferometric Fiber-Optic Sensor Array Based on a TDM Scheme |
title_short | Precisely Automatic Time Window Locating for an Interferometric Fiber-Optic Sensor Array Based on a TDM Scheme |
title_sort | precisely automatic time window locating for an interferometric fiber-optic sensor array based on a tdm scheme |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6211038/ https://www.ncbi.nlm.nih.gov/pubmed/30347740 http://dx.doi.org/10.3390/s18103548 |
work_keys_str_mv | AT cuike preciselyautomatictimewindowlocatingforaninterferometricfiberopticsensorarraybasedonatdmscheme AT renzhongjie preciselyautomatictimewindowlocatingforaninterferometricfiberopticsensorarraybasedonatdmscheme AT qianjieyu preciselyautomatictimewindowlocatingforaninterferometricfiberopticsensorarraybasedonatdmscheme AT pengwenjun preciselyautomatictimewindowlocatingforaninterferometricfiberopticsensorarraybasedonatdmscheme AT zhurihong preciselyautomatictimewindowlocatingforaninterferometricfiberopticsensorarraybasedonatdmscheme |