Abstract
In practice, since the measurement environments are usually complex, the electromagnetic interference problem has been an important issue for sensor applications, and the fiber sensor can overcome it effectively. this paper proposes a new type of vibration sensor based on fiber Bragg grating (FBG). The vibration sensor with double equal strength cantilever beams structure can further improve the measurement stability. The physical model of FBG vibration sensor was established, and the structural parameters of the double equa-strength cantilever beams were designed and optimized by finite element analysis. Both simulation and experimental tests are included in this paper to illustrate the low-frequency vibration performance of the designed vibration sensor. Among, the sensitivity of the sensor was 0.024 0 pm/(m·s−2), the natural frequency was 185 Hz, and the linearity was obtained, which further verify the stability and reliability of the sensor vibration frequency measurement.
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This work has been supported by the Shanxi Young Talent Lifting Plan Foundation (No.20170512), and the Natural Science Basic Research Plan in Shaanxi Province of China (No.2009JQ-491).
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He, Z., Zhang, Z., Li, L. et al. A novel fiber Bragg grating vibration sensor with double equal-strength cantilever beams. Optoelectron. Lett. 17, 321–327 (2021). https://doi.org/10.1007/s11801-021-0121-7
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DOI: https://doi.org/10.1007/s11801-021-0121-7