Triaxial Accelerometer Based on a Semicircular Hetero-Core Fiber-Optic Sensor
Triaxial Accelerometer Based on a Semicircular Hetero-Core Fiber-Optic Sensor
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DOI：
10.1109/jsen.2023.3246056
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发表时间：
2023-04-01
影响因子：
4.3
通讯作者：
Nishiyama，Michiko
中科院分区：
文献类型：
--
作者：
Kadokura，Miyuki;Yamazaki，Hiroshi;Nishiyama，Michiko
在本文中，我们介绍了一种具有成本效益的三轴加速度计的特性和性能，该三轴加速度计采用三根半圆异质芯光纤，由于机械变形而导致光损耗，横向灵敏度低。除了横向灵敏度较低外，采用补偿剩余横向灵敏度的灵敏度矩阵进行标定，进一步将三轴加速度计的误差从相当于商用加速度计的20.2%提高到相当于商用加速度计的6.97%。该加速度计的特征质量参数为主轴灵敏度5.82dB/g，测量范围为±74 g，带宽为10-90 Hz，判别阈值为g。由于紫外光固化树脂纤维涂层的粘弹性，最大相位差为-12.8°。在倾斜三轴加速度计以改变施加在各轴上的加速度的条件下，利用3灵敏度矩阵评估修正后的加速度。我们成功地演示了使用半圆光纤传感器的实用三轴加速度计，用于工业机械的早期故障检测。
In this article, we present the characteristics and performance of a cost-effective triaxial accelerometer using three semicircular hetero-core optical fibers, causing optical loss due to mechanical deformation with low transverse sensitivity. In addition to the low transverse sensitivity, calibration with a sensitivity matrix accounting for the residual transverse sensitivity compensation further improved the error of the triaxial accelerometer from 20.2% to 6.97% equivalent to commercial accelerometers. The characteristic quality parameters of the proposed accelerometer include sensitivity in the primary axis, measurement range, bandwidth, and discrimination threshold, which were 5.82dB/g, ±74 g, 10–90 Hz, andg, respectively. The maximum phase difference was -12.8° due to the viscoelastic property of the ultraviolet (UV)-curable resin fiber coating. The corrected accelerations using the3 sensitivity matrix were evaluated under the condition that the triaxial accelerometer was tilted to change the acceleration applied to each axis. We have successfully demonstrated the practical triaxial accelerometer using semicircular optical fiber sensors for early fault detection of industrial machinery.