Fiber Bragg grating pressure sensor based on multi-hinges three-levers structure

IF 2.5 3区物理与天体物理 Q2 OPTICS

Optics Communications Pub Date : 2025-09-03 DOI:10.1016/j.optcom.2025.132417

Shuhui Wei , Qiang Liu , Chao Ma , Jianxin Wang , Pengfei Lu , Tingting Lv , Yudan Sun , Jingwei Lv , Paul K. Chu , Chao Liu

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引用次数: 0

Abstract

A novel diaphragm pressure sensor based on multi-hinges three-levers structure is proposed and verified. The multi-hinges three-levers structure effectively amplifies the strain of the diaphragm and transfers to the fiber Bragg grating (FBG) which is pasted on the structure, and then the pressure can be measured by observing the central wavelength shift of FBG. The amplification principle of the three-levers structure is analyzed and optimized using the finite element methods. Then the sensor is manufactured and tested in the experiment. The results indicate that the sensitivity of the sensor reaches 4.37 p.m./kPa in the measurement range of 0–1.5 MPa. Meanwhile, another FBG is employed for monitoring temperature and eliminating the cross-sensitivity between temperature and strain. The temperature sensitivity is 11.09 p.m./°C in the range of 20–80 °C. The designed sensor exhibits higher sensitivity and can measure temperature and pressure simultaneously. It has a potential application prospect in the field of the pressure monitoring of oil and gas pipelines.

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基于多铰链三杠杆结构的光纤光栅压力传感器

提出并验证了一种新型的基于多铰链三杠杆结构的膜片压力传感器。多铰链三杠杆结构将膜片的应变有效放大并传递到粘贴在膜片上的光纤布拉格光栅（FBG）上，通过观察光纤光栅的中心波长位移来测量膜片的压力。采用有限元法对三杆结构的放大原理进行了分析和优化。然后制作了传感器并进行了实验测试。结果表明，在0 ~ 1.5 MPa的测量范围内，传感器的灵敏度可达4.37 pm /kPa。同时，采用另一种光纤光栅监测温度，消除温度与应变之间的交叉灵敏度。在20 ~ 80℃范围内，温度灵敏度为11.09 pm /℃。所设计的传感器具有较高的灵敏度，可以同时测量温度和压力。在油气管道压力监测领域具有潜在的应用前景。

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来源期刊

Optics Communications 物理-光学

CiteScore

5.10

自引率

8.30%

发文量

681

审稿时长

38 days

期刊介绍： Optics Communications invites original and timely contributions containing new results in various fields of optics and photonics. The journal considers theoretical and experimental research in areas ranging from the fundamental properties of light to technological applications. Topics covered include classical and quantum optics, optical physics and light-matter interactions, lasers, imaging, guided-wave optics and optical information processing. Manuscripts should offer clear evidence of novelty and significance. Papers concentrating on mathematical and computational issues, with limited connection to optics, are not suitable for publication in the Journal. Similarly, small technical advances, or papers concerned only with engineering applications or issues of materials science fall outside the journal scope.