Aime Laura F J, Kissinger Thomas, James Stephen W, Chehura Edmon, Verzeletti Alberto, Tatam Ralph P
Opt Express. 2021 Feb 1;29(3):4105-4123. doi: 10.1364/OE.416715.
A pressure sensor specified for aerodynamic applications and based on optical fibre strain sensors mounted on a circular glass fibre reinforced polymer membrane is presented. The use of two fibre optic strain sensing technologies is explored, the novel intrinsic fibre segment interferometry (FSI) approach and fibre Bragg gratings (FBGs), with the use of FSI shown to offer a pressure resolution that is 15 times larger than that achieved using an FBG. A number of design and fabrication issues are considered, including the position of the fibres relative to the neutral axis of the membrane and the influence of the membrane support structure on the thermal and pressure sensitivities of the sensor, with particular regards to pressure and temperature discrimination.
介绍了一种用于空气动力学应用的压力传感器，该传感器基于安装在圆形玻璃纤维增强聚合物膜上的光纤应变传感器。研究了两种光纤应变传感技术，即新型本征光纤段干涉测量法（FSI）和光纤布拉格光栅（FBG），结果表明，FSI的压力分辨率比FBG高15倍。考虑了许多设计和制造问题，包括光纤相对于膜中性轴的位置以及膜支撑结构对传感器热灵敏度和压力灵敏度的影响，特别是在压力和温度区分方面。
