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| Content Provider | MDPI |
|---|---|
| Author | Li, Tianliang Tan, Yuegang Zhou, Zude |
| Abstract | This paper proposes a fiber Bragg grating sensing-based micro-vibration sensor. The optical fiber has been directly treated as an elastomer to design the micro-vibration sensor, which possesses two FBGs. The mass is fixed on the middle of the fiber, and the vertical vibration of the mass has been converted into the axial tension/compression of the fiber. The principle of the sensor has been introduced, and the experiment conclusions show that the sensor sensitivity is 2362 pm/g within the range of 200–1200 mm/s2, which is consistent with theoretical analysis sensitivity of 2532.6 pm/g, and it shows an excellent linearity of 1.376%, while the resonant frequency of the sensor is 34 Hz, and the flat frequency range resides in the 0–22 Hz range. When used to measure micro-vibrations, its measured frequency relative error is less than 1.69% compared with the values acquired with a MEMS accelerometer, and the amplitude values of its measured vibration signal are consistent with the MEMS accelerometer under different excitation conditions too, so it can effectively realize the micro-vibration measurements. |
| File Size | 5565440 |
| File Format | |
| e-ISSN | 14248220 |
| DOI | 10.3390/s16040547 |
| Journal | Sensors |
| Issue Number | 4 |
| Volume Number | 16 |
| Language | English |
| Publisher Date | 2016-04-15 |
| Access Restriction | Open |
| Subject Keyword | micro-vibration fiber Bragg grating vibration sensor |
| Content Type | Text |
| Resource Type | Article |
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