微多芯光纤振动传感器的设计与特性分析

Design and characteristic analysis of micro multi-core fiber vibration sensor.

作者信息

Li Kun, Dong Mingli, Zhao Wu, Wang Le, Zhang Hongshun

机构信息

Key Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument, Beijing Information Science & Technology University, Beijing, 100192, China.

Beijing Laboratory of Optical Fiber Sensing and System, Beijing Information Science & Technology University, Beijing, 100016, China.

出版信息

Heliyon. 2024 Aug 28;10(17):e37069. doi: 10.1016/j.heliyon.2024.e37069. eCollection 2024 Sep 15.

DOI:10.1016/j.heliyon.2024.e37069

PMID:39286186

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11403002/

Abstract

We proposed and fabricated a miniaturized multi-core fiber grating vibration sensor. The size of the miniaturized vibration sensor is 10mm × 10mm × 10 mm with a mass of only 0.25g. Finite element analysis and experimental tests were carried out to validate the performance of the vibration sensor. The experiment results indicate that the sensor has a sensitivity of 68.72 pm/g in the X direction and 64.52 pm/g in the Y direction within the operating frequency range of 20-240Hz. The cross-interference between the two directions of vibration measurement falls within 4 %. The sensor is suitable for measuring mechanical vibrations in the mid-low frequency range, especially in cases where size, quality, and distributed measurement are of particular concern.

摘要

我们提出并制作了一种小型化的多芯光纤光栅振动传感器。该小型化振动传感器的尺寸为10mm×10mm×10mm，质量仅为0.25g。进行了有限元分析和实验测试以验证振动传感器的性能。实验结果表明，该传感器在20 - 240Hz的工作频率范围内，X方向灵敏度为68.72pm/g，Y方向灵敏度为64.52pm/g。两个振动测量方向之间的交叉干扰在4%以内。该传感器适用于中低频范围内的机械振动测量，特别是在尺寸、质量和分布式测量备受关注的情况下。