Sensitivity-Enhanced Fiber Bragg Grating Pressure Sensor Based on a Diaphragm and Hinge-Lever Structure

被引：24
作者：
Liu, Xiaobin [1 ]
Liang, Lei [1 ]
Jiang, Ke [1 ]
Xu, Gang [2 ]
机构：
[1] Wuhan Univ Technol, Natl Engn Lab Fiber Opt Sensing Technol, Wuhan 430070, Peoples R China
[2] Hubei Engn Univ, Sch Mech Engn, Xiaogan 432000, Peoples R China
来源：
IEEE SENSORS JOURNAL | 2021年 / 21卷 / 07期
关键词：
Fiber gratings; Temperature sensors; Temperature measurement; Sensors; Sensitivity; Pressure sensors; Strain; Fiber Bragg grating; finite element simulation; hinge-lever structure; optical fiber sensors; pressure sensors; OPTICAL-FIBER; FBG; SYSTEM;
D O I：
10.1109/JSEN.2020.3045992
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A high-sensitivity and small-size pressure sensor based on dual fiber Bragg grating (FBG), a diaphragm and hinge-lever structure is proposed. Its measurement principle is described and simulation analysis is conducted. We compensate for temperature cross-sensitivity by using an additional FBG to accurately measure the ambient temperature. Sensing experiments indicate that the pressure sensitivity is 5.227 pm/kPa within the range of 0-1.0 MPa, which is three times greater than that of a single-diaphragm pressure sensor without a flexible hinge lever. The sensor is suitable for accurate and stable pressure measurement in oil and gas pipelines and similar environments.
引用
收藏
页码：9155 / 9164
页数：10
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