Li Kun, Dong Mingli, Zhao Wu, Wang Le, Zhang Hongshun
Key Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument, Beijing Information Science & Technology University, Beijing, 100192, China.
Beijing Laboratory of Optical Fiber Sensing and System, Beijing Information Science & Technology University, Beijing, 100016, China.
Heliyon. 2024 Aug 28;10(17):e37069. doi: 10.1016/j.heliyon.2024.e37069. eCollection 2024 Sep 15.
We proposed and fabricated a miniaturized multi-core fiber grating vibration sensor. The size of the miniaturized vibration sensor is 10mm × 10mm × 10 mm with a mass of only 0.25g. Finite element analysis and experimental tests were carried out to validate the performance of the vibration sensor. The experiment results indicate that the sensor has a sensitivity of 68.72 pm/g in the X direction and 64.52 pm/g in the Y direction within the operating frequency range of 20-240Hz. The cross-interference between the two directions of vibration measurement falls within 4 %. The sensor is suitable for measuring mechanical vibrations in the mid-low frequency range, especially in cases where size, quality, and distributed measurement are of particular concern.
我们提出并制作了一种小型化的多芯光纤光栅振动传感器。该小型化振动传感器的尺寸为10mm×10mm×10mm，质量仅为0.25g。进行了有限元分析和实验测试以验证振动传感器的性能。实验结果表明，该传感器在20 - 240Hz的工作频率范围内，X方向灵敏度为68.72pm/g，Y方向灵敏度为64.52pm/g。两个振动测量方向之间的交叉干扰在4%以内。该传感器适用于中低频范围内的机械振动测量，特别是在尺寸、质量和分布式测量备受关注的情况下。
