摘要
本文设计的实验仪采用FBG应变传感原理、准分布式技术和匹配光栅解调法,克服了现有同类仪器相对缺乏且多为单点测量的不足。本设计采用结构相同的双悬臂梁分别作为传感与解调机构,应变的模拟与测试在仪器内部即可实现。该实验仪可完成FBG准分布式实验教学,作为相关课程的教学实验设备;亦可用作解调仪对外界匹配光栅的传感量进行解调。
Based on the sensing principle of fiber Bragg grating （FBG） for strain measurement, quasi-distributed technology of FBG sensors and technique of matched FBG demodulation, a novel experimental instrument for quasi-distributed FBG sensing was designed, which overcomes the limitation of single point measurement of FBG sensors. The experimental instrument adopts double unique matched cantilever beams as sensing and demodulation mechanisms respectively, which can carry out the acquisition and demodulation of the strain data. The designed instrument satisfies the need for an effective tool in quasi-distributed fiber sensing teaching and is better than other similar products. The instrument not only can be employed in related course teaching but also can be used as a wavelength readout system to demodulate other matched FBG outside the instrument.
出处
《电子测量与仪器学报》
CSCD
2008年第1期67-71,共5页
Journal of Electronic Measurement and Instrumentation
基金
湖南省火炬计划资助项目(编号:2005EB1048)
关键词
双悬臂梁
准分布式
光纤光栅
匹配光纤光栅解调
double cantilever beam； quasi-distributed； fiber Bragg grating； matched fiber grating demodulation
作者简介
李学军：男，1969年出生。湖南科技大学教授，工学博士。研究方向为测控技术与制造自动化、机械动力学与故障诊断、机械测试理论及技术。已发表论文70余篇。E-mail：hnkjdxlxj@163．com
