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A High Performance Piezoelectric Sensor for Dynamic Force Monitoring of Landslide

Due to the increasing influence of human engineering activities, it is important to monitor the transient disturbance during the evolution process of landslide. For this purpose, a high-performance piezoelectric sensor is presented in this paper. To adapt the high static and dynamic stress environme...

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Autores principales: Li, Ming, Cheng, Wei, Chen, Jiangpan, Xie, Ruili, Li, Xiongfei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5336056/
https://www.ncbi.nlm.nih.gov/pubmed/28218673
http://dx.doi.org/10.3390/s17020394
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author Li, Ming
Cheng, Wei
Chen, Jiangpan
Xie, Ruili
Li, Xiongfei
author_facet Li, Ming
Cheng, Wei
Chen, Jiangpan
Xie, Ruili
Li, Xiongfei
author_sort Li, Ming
collection PubMed
description Due to the increasing influence of human engineering activities, it is important to monitor the transient disturbance during the evolution process of landslide. For this purpose, a high-performance piezoelectric sensor is presented in this paper. To adapt the high static and dynamic stress environment in slope engineering, two key techniques, namely, the self-structure pressure distribution method (SSPDM) and the capacitive circuit voltage distribution method (CCVDM) are employed in the design of the sensor. The SSPDM can greatly improve the compressive capacity and the CCVDM can quantitatively decrease the high direct response voltage. Then, the calibration experiments are conducted via the independently invented static and transient mechanism since the conventional testing machines cannot match the calibration requirements. The sensitivity coefficient is obtained and the results reveal that the sensor has the characteristics of high compressive capacity, stable sensitivities under different static preload levels and wide-range dynamic measuring linearity. Finally, to reduce the measuring error caused by charge leakage of the piezoelectric element, a low-frequency correction method is proposed and experimental verified. Therefore, with the satisfactory static and dynamic properties and the improving low-frequency measuring reliability, the sensor can complement dynamic monitoring capability of the existing landslide monitoring and forecasting system.
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spelling pubmed-53360562017-03-16 A High Performance Piezoelectric Sensor for Dynamic Force Monitoring of Landslide Li, Ming Cheng, Wei Chen, Jiangpan Xie, Ruili Li, Xiongfei Sensors (Basel) Article Due to the increasing influence of human engineering activities, it is important to monitor the transient disturbance during the evolution process of landslide. For this purpose, a high-performance piezoelectric sensor is presented in this paper. To adapt the high static and dynamic stress environment in slope engineering, two key techniques, namely, the self-structure pressure distribution method (SSPDM) and the capacitive circuit voltage distribution method (CCVDM) are employed in the design of the sensor. The SSPDM can greatly improve the compressive capacity and the CCVDM can quantitatively decrease the high direct response voltage. Then, the calibration experiments are conducted via the independently invented static and transient mechanism since the conventional testing machines cannot match the calibration requirements. The sensitivity coefficient is obtained and the results reveal that the sensor has the characteristics of high compressive capacity, stable sensitivities under different static preload levels and wide-range dynamic measuring linearity. Finally, to reduce the measuring error caused by charge leakage of the piezoelectric element, a low-frequency correction method is proposed and experimental verified. Therefore, with the satisfactory static and dynamic properties and the improving low-frequency measuring reliability, the sensor can complement dynamic monitoring capability of the existing landslide monitoring and forecasting system. MDPI 2017-02-17 /pmc/articles/PMC5336056/ /pubmed/28218673 http://dx.doi.org/10.3390/s17020394 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
Li, Ming
Cheng, Wei
Chen, Jiangpan
Xie, Ruili
Li, Xiongfei
A High Performance Piezoelectric Sensor for Dynamic Force Monitoring of Landslide
title A High Performance Piezoelectric Sensor for Dynamic Force Monitoring of Landslide
title_full A High Performance Piezoelectric Sensor for Dynamic Force Monitoring of Landslide
title_fullStr A High Performance Piezoelectric Sensor for Dynamic Force Monitoring of Landslide
title_full_unstemmed A High Performance Piezoelectric Sensor for Dynamic Force Monitoring of Landslide
title_short A High Performance Piezoelectric Sensor for Dynamic Force Monitoring of Landslide
title_sort high performance piezoelectric sensor for dynamic force monitoring of landslide
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5336056/
https://www.ncbi.nlm.nih.gov/pubmed/28218673
http://dx.doi.org/10.3390/s17020394
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