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Photonic Sensors

, Volume 7, Issue 2, pp 140–147 | Cite as

Optical fiber grating vibration sensor for vibration monitoring of hydraulic pump

  • Zhengyi Zhang
  • Chuntong Liu
  • Hongcai Li
  • Zhenxin He
  • Xiaofeng Zhao
Open Access
Regular

Abstract

In view of the existing electrical vibration monitoring traditional hydraulic pump vibration sensor, the high false alarm rate is susceptible to electromagnetic interference and is not easy to achieve long-term reliable monitoring, based on the design of a beam of the uniform strength structure of the fiber Bragg grating (FBG) vibration sensor. In this paper, based on the analysis of the vibration theory of the equal strength beam, the principle of FBG vibration tuning based on the equal intensity beam is derived. According to the practical application of the project, the structural dimensions of the equal strength beam are determined, and the optimization design of the vibrator is carried out. The finite element analysis of the sensor is carried out by ANSYS, and the first order resonant frequency is 94.739 Hz. The vibration test of the sensor is carried out by using the vibration frequency of 35 Hz and the vibration source of 50 Hz. The time domain and frequency domain analysis results of test data show that the sensor has good dynamic response characteristics, which can realize the accurate monitoring of the vibration frequency and meet the special requirements of vibration monitoring of hydraulic pump under specific environment.

Keywords

Fiber Bragg grating uniform strength beam vibrating monitoring vibration sensor 

Notes

Acknowledgment

This work was supported by the National Natural Science Foundation of China (No. 41404022) and the Shanxi National Science Foundation (No. 2015JM4128).

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Copyright information

© The Author(s) 2017

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Authors and Affiliations

  • Zhengyi Zhang
    • 1
  • Chuntong Liu
    • 1
  • Hongcai Li
    • 1
  • Zhenxin He
    • 1
  • Xiaofeng Zhao
    • 1
  1. 1.Department TwoRocket Force University of EngineeringXi’anChina

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