CAJ | 학술논문

基于不锈钢测杆连接悬臂梁结构的光纤布拉格光栅位移传感器，通过首尾连接形成光纤布拉格位移传感链路串。本设计利用安装在法兰盘下方的弹簧消除相邻各位移计的影响，同时在悬臂梁敏感位置上下两侧粘贴光栅消除温度对位移的影响，得到光栅波长与各段传感器实际位移的对应关系。通过现场对比测试，可实现在小口径的测量孔中安装位移传感链路串，提高围岩位移监测分辨率。
기우불수강측간련접현비량결구적광섬포랍격광책위이전감기，통과수미련접형성광섬포랍격위이전감련로천。본설계이용안장재법란반하방적탄황소제상린각위이계적영향，동시재현비량민감위치상하량측점첩광책소제온도대위이적영향，득도광책파장여각단전감기실제위이적대응관계。통과현장대비측시，가실현재소구경적측량공중안장위이전감련로천，제고위암위이감측분변솔。
The fiber Bragg grating displacement sensor which based on cantilever structure connected by force conduct rod forms fiber Bragg displacement sensor link string by connecting head and end. It dismisses impact on the adjacent displacement meters by the springs installed under the flange. And it's worthy noting that the impact on the displacement meters from temperature is dismissed by the grating attached on the up and down side of the sensitive area of the cantilever, and we get the corresponding re-lation between grating's wave length and displacement. After the onsite comparison test, we found this displacement sensor can realize the aim of installing multiple instruments in the small hole at the same time.