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Experimental study on a new FBG-based and Terfenol-D inclinometer for slope displacement monitoring

机译:基于FBG的基于FBG和Terfenol-D倾斜度仪进行斜率监测的实验研究

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摘要

Slope displacement monitoring is an important means for early warning of landslide hazards, which is of great significance for preventing building damage and economic losses. This study describes a new inclinometer based on fiber Bragg grating (FBG) sensing technology and magnetostrictive effects. A series of FBG sensors were attached to the surface of the Terfenol-D to measure the magnetostrictive strain under different magnetic fields. Authors performed multiple sets of calibration experiments in the laboratory to obtain significant results. Furthermore, this study used the linear relationship between the center wavelength of FBG and the rotating angle of Terfenol-D to obtain the relative deflection angle between the rigid elements. The experiments show that the calibration results are in good agreement with the theoretical results. The developed inclinometer has good linearity, high tilt measurement sensitivity and high resolution. (C) 2019 Elsevier Ltd. All rights reserved.
机译:坡度位移监测是山体滑坡危险预警的重要手段,这对于防止建设损害和经济损失具有重要意义。 本研究描述了一种基于光纤布拉格光栅(FBG)感测技术和磁致伸缩效应的新倾斜计。 将一系列FBG传感器连接到Terfenol-D的表面上,以测量不同磁场下的磁致伸缩菌株。 作者在实验室中进行了多组校准实验,以获得显着的结果。 此外,该研究使用FBG的中心波长与Terfenol-D的旋转角度之间的线性关系,以获得刚性元件之间的相对偏转角。 实验表明,校准结果与理论结果吻合良好。 开发的倾斜仪具有良好的线性度,高倾斜测量灵敏度和高分辨率。 (c)2019年elestvier有限公司保留所有权利。

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