Abushagur Abdulfatah A G, Arsad Norhana, Bakar Ahmad Ashrif A
Center of Advanced Electrical and Communication Engineering, Faculty of Engineering and Built Environmental, Universiti Kebangsaan Malaysia, UKM Bangi, Selangor 43600, Malaysia.
Department of Electrical and Electronic Engineering, Faculty of Engineering, University of Gharyan, Gharyan, Libya.
Sensors (Basel). 2021 Mar 12;21(6):2002. doi: 10.3390/s21062002.
This work investigates a new interrogation method of a fiber Bragg grating (FBG) sensor based on longer and shorter wavelengths to distinguish between transversal forces and temperature variations. Calibration experiments were carried out to examine the sensor's repeatability in response to the transversal forces and temperature changes. An automated calibration system was developed for the sensor's characterization, calibration, and repeatability testing. Experimental results showed that the FBG sensor can provide sensor repeatability of 13.21 pm and 17.015 pm for longer and shorter wavelengths, respectively. The obtained calibration coefficients expressed in the linear model using the matrix enabled the sensor to provide accurate predictions for both measurements. Analysis of the calibration and experiment results implied improvements for future work. Overall, the new interrogation method demonstrated the potential to employ the FBG sensing technique where discrimination between two/three measurands is needed.
这项工作研究了一种基于更长和更短波长的光纤布拉格光栅（FBG）传感器的新型询问方法，以区分横向力和温度变化。进行了校准实验，以检验传感器对横向力和温度变化响应的重复性。开发了一种自动校准系统，用于传感器的特性表征、校准和重复性测试。实验结果表明，对于更长和更短波长，FBG传感器分别可提供13.21 pm和17.015 pm的传感器重复性。使用矩阵在线性模型中表示的获得的校准系数使传感器能够对两种测量都提供准确的预测。对校准和实验结果的分析为未来工作提出了改进方向。总体而言，这种新型询问方法展示了在需要区分两个/三个被测量的情况下采用FBG传感技术的潜力。
