光纤布拉格光栅
桁架
振膜(声学)
材料科学
光学
压力传感器
平方(代数)
磷
梁(结构)
光纤
光纤传感器
声学
保偏光纤
振动
结构工程
物理
工程类
热力学
数学
几何学
作者
Zhenan Jia,Qinggeng Fan,Dequan Feng,Dakuan Yu,Xianfeng Zhao,Kaiqing Yang
出处
期刊:Optical Engineering
[SPIE - International Society for Optical Engineering]
日期:2019-09-23
卷期号:58 (09): 1-1
被引量:15
标识
DOI:10.1117/1.oe.58.9.097109
摘要
A fiber Bragg grating (FBG) pressure sensor using a composite structure comprising a square diaphragm, steel trusses, and vertical beams is proposed and studied. The deflection of the square diaphragm due to the applied pressure is transferred as an axial force on the FBG mounted at the end of the vertical beams. Measurement principle and stress analysis of the pressure sensor are introduced. The experimental results indicate that the pressure sensitivity of the sensor is 622.71 pm / MPa across the range of 0 to 2 MPa with a good linearity recorded at 99.996%, and the hysteresis and repeatability of the pressure sensor are calculated to be 0.6639% full-scale output (FSO) and 0.2773% FSO, respectively. In addition, the relative error of the sensor after temperature compensation was found to be 1.46%, which indicates an effective elimination of the effect of the temperature on pressure measurement.
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