水杯型光纤布拉格光栅沉降计的研究

Q4 Physics and Astronomy

光学技术 Pub Date : 2014-01-01 DOI:10.3788/GXJS20144001.0062

胡明耀 Hu Mingyao, 李川 Li Chuan, 代云洪 Dai Yunhong, 郭丹 Guo Dan, 赵振刚 Zhao Zhenggang, 李英娜 Li Yingna, 谢涛 Xie Tao, 仝克帅 Tong Keshuai, 许俊飞 Xu Junfei

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引用次数: 0

摘要

沉降仪是路基、桥梁、隧道、边坡等结构的重要沉降测量仪器。采用上下容器连接结构制成水杯状光纤布拉格光栅沉降计。当压差作用下发生沉降时，膜片挠度使得等强度悬臂梁自由端的挠度变化与压差传递杆的挠度变化相同。将粘贴在悬臂面上的光纤布拉格光栅进行拉伸。中心波长移位。通过检测光纤的波长位移，可以得到布拉格光栅的沉降值。实验结果表明，光纤布拉格光栅波长随沉降呈线性变化，灵敏度为15.4pm/cm，线性度为1.73% FS，滞后量为0.984%FS，重复性误差为3.61% FS。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Research of water cup-like fiber Bragg grating settlement gauge

Settlement gauge is an important settlement measuring instrument of subgrade,bridge,tunnel,slope and other structure.The water cup-like fiber Bragg grating settlement gauge is made by applying the up and down containers connected structure.When settlement happens under differential pressure the diaphragm deflection makes that the same deflection change of the free end of the equal strength cantilever is produced by apress-transfer rod.Fiber Bragg grating which is pasted on the cantilever surface is stretched.Center wavelength is shifted.By detecting the wavelength shift of fiber Bragg grating settlement value can be obtained.The experiment result indicates that fiber Bragg grating wavelength varies linearly with settlement,the sensitivity is 15.4pm/cm,the linearity is 1.73% FS,the hysteresis is 0.984%FS and the repeatability error is 3.61% FS.

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来源期刊

光学技术 Physics and Astronomy-Atomic and Molecular Physics, and Optics

CiteScore

0.60

自引率

0.00%

发文量

6699

期刊介绍： The predecessor of Optical Technology was Optical Technology, which was founded in 1975. At that time, the Fifth Ministry of Machine Building entrusted the School of Optoelectronics of Beijing Institute of Technology to publish the journal, and it was officially approved by the State Administration of Press, Publication, Radio, Film and Television for external distribution. From 1975 to 1979, the magazine was named Optical Technology, a quarterly with 4 issues per year; from 1980 to the present, the magazine is named Optical Technology, a bimonthly with 6 issues per year, published on the 20th of odd months. The publication policy is: to serve the national economic construction, implement the development of the national economy, serve production and scientific research, and implement the publication policy of "letting a hundred flowers bloom and a hundred schools of thought contend".