Journal
IEEE SENSORS JOURNAL
Volume 19, Issue 24, Pages 11932-11940Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSEN.2019.2936596
Keywords
Fiber Bragg grating; miniaturized structure; vibration monitoring; vibration sensor
Funding
- National Natural Science Foundation of China [51405354]
Ask authors/readers for more resources
In order to meet the needs of small space vibration detection, a novel miniaturized fiber Bragg grating (FBG) vibration sensor is proposed. With adopting the hinges and elastic plate as the elastic body, the miniaturization of sensor and suppression of transverse interference are achieved. The suspended FBG can avoid chirp phenomenon and realize distributed measurement. The structure model and principle of the sensor are introduced, the sensing characteristics of the sensor are analyzed theoretically, and the structural parameters of the sensor are determined by simulation analysis. The size of the miniaturized vibration sensor is 27 mm x 11 mm x 22 mm with a mass of only 5 g. Experimental results show that the sensor can accurately acquire vibration signals. The sensitivity is about 12 pm/g in the flat range of 0-800 Hz, and the natural frequency is 1525 Hz. Moreover, the transverse interference of the sensor is less than 3.5%, and its dynamic range is up to 86 dB. The sensor can be suitable for mechanical vibration measurement in the mid-high frequency range, which has special requirements for size, quality, and distributed measurement.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available