A dual fiber grating acceleration sensor based on elastic ring structure of “8” shape

IF 2.6 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Optical Fiber Technology Pub Date : 2024-11-20 DOI:10.1016/j.yofte.2024.104037

Kangning Li , Qiang Zhao , Jiewei Du , Peng Sun , Zunwei Li , Fengxiang Guo , Dawei Du

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Abstract

To broaden the frequency band and maintained higher sensitivity of the fiber Bragg grating (FBG) acceleration sensor, an acceleration sensor based on elastic ring structure of “8” shape is designed, which can realize temperature compensation. The wavelength shift difference of two fiber gratings is used as the output signal to eliminate the temperature effect. The characteristics of the sensor are analyzed using elastic mechanics theory and finite element simulation, and finally, the theory of the proposed sensor is verified by experiments, and the experimental results show that the sensor has a good response flat region at 10

\sim

300 Hz, the sensitivity is 32 pm/G, the lateral interference level below 25% of the sensitivity in the working direction, and the temperature impact is reduced to 1.13 pm/

° C

in the range of −5

\sim 35 ° C

, which can meet the requirements of mechanical equipment fault diagnosis.

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基于 "8 "字形弹性环结构的双光纤光栅加速度传感器

为了拓宽光纤布拉格光栅（FBG）加速度传感器的频带并保持更高的灵敏度，设计了一种基于 "8 "字形弹性环结构的加速度传感器，它可以实现温度补偿。两个光纤光栅的波长偏移差被用作输出信号，以消除温度效应。利用弹性力学理论和有限元仿真分析了传感器的特性，最后通过实验验证了所提传感器的理论，实验结果表明，该传感器在 10∼300 Hz 具有良好的响应平坦区，灵敏度为 32 pm/G，工作方向上的横向干扰电平低于灵敏度的 25%，在 -5∼35°C 范围内温度影响降低到 1.13 pm/°C，可以满足机械设备故障诊断的要求。

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来源期刊

Optical Fiber Technology 工程技术-电信学

CiteScore

4.80

自引率

11.10%

发文量

327

审稿时长

63 days

期刊介绍： Innovations in optical fiber technology are revolutionizing world communications. Newly developed fiber amplifiers allow for direct transmission of high-speed signals over transcontinental distances without the need for electronic regeneration. Optical fibers find new applications in data processing. The impact of fiber materials, devices, and systems on communications in the coming decades will create an abundance of primary literature and the need for up-to-date reviews. Optical Fiber Technology: Materials, Devices, and Systems is a new cutting-edge journal designed to fill a need in this rapidly evolving field for speedy publication of regular length papers. Both theoretical and experimental papers on fiber materials, devices, and system performance evaluation and measurements are eligible, with emphasis on practical applications.