JOURNAL ARTICLE

Rotating cantilever-based low-frequency double-fiber grating acceleration sensor.

  • Published In: Review of Scientific Instruments, 2023, v. 94, n. 6. P. 1 1 of 3

  • Database: Academic Search Ultimate 2 of 3

  • Authored By: Hong, Li; Mai, Menglin; Zhang, Ruilei; Luo, Qingshan; Wang, Xiaoyu 3 of 3

Abstract

The article focuses on the design, optimization, and experimental evaluation of a high-sensitivity, wide low-frequency band fiber Bragg grating (FBG) acceleration sensor incorporating a rotating cantilever and springs. This sensor addresses challenges in accurately measuring low-frequency vibrations by utilizing a frictionless rotating cantilever mechanism to improve sensitivity and springs to broaden the operating frequency band, while employing a dual-fiber differential technique for temperature compensation. Theoretical modeling, finite element simulation via ANSYS Workbench, and experimental tests demonstrated a natural frequency of approximately 78 Hz, an operating frequency range of 1–55 Hz, a sensitivity of about 1127.2 pm/g, transverse interference immunity below 5.45%, and a dynamic range of 86.45 dB. Compared with existing FBG acceleration sensors, this design offers enhanced comprehensive performance suitable for applications such as seismic monitoring and geological exploration.

Additional Information

  • Source:Review of Scientific Instruments. 2023/06, Vol. 94, Issue 6, p1
  • Document Type:Article
  • Subject Area:Science
  • Publication Date:2023
  • ISSN:0034-6748
  • DOI:10.1063/5.0146860
  • Accession Number:164665384
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