Calibration and Uncertainty Analysis of Optical Fiber Bragg Grating Vibration Sensor
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摘要: 采用相对校准法对振动传感器进行标定，将被校传感器与标准传感器背靠背固定在振动台中心，承受相同的振动信号，对标准振动传感器的输出量与被校振动传感器的输出量作比较和分析，并且引入了不确定度分析。实验结果表明：Fiber Bragg Grating（FBG）振动传感器标定平台标定得到FBG振动传感器的灵敏度为5.115 pm/g，线性度为3.5%，重复性误差为4.9% FS，校准装置的测量不确定度为0.003 8 g。满足待测FBG振动传感器的标定要求，提高了FBG振动传感器检定的工作效率和标定精度，可以运用于实际工程中。Abstract: The relative calibration method is used to complete the calibration of the vibration sensor in this paper, the experimental sensor is put on the center of the shaking table being back-to-back with standard sensor, the data from standard vibration sensor and the experimental sensor are compared and analyzed, and introducing the uncertainty analysis. The experimental results show that the Fiber Bragg Grating(FBG) vibration sensor calibration platform is calibrated to obtain the FBG vibration sensor with a sensitivity of 5.115 pm/g, linearity of 3.5%, repeatability error of 4.9% FS, and calibration uncertainty of the calibration device is 0.003 8 g. It satisfies the calibration requirements of the FBG vibration sensor to be tested, improves the working efficiency and calibration accuracy of the FBG vibration sensor verification, and this method can be applied to practical engineering.
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Key words:
- optical fiber Bragg grating /
- vibration sensor /
- calibration /
- uncertainty /
- experiment
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表 2 1.5 g加速度测量结果
测试次数 测量加速度/g 1 1.492 2 1.498 3 1.49 4 1.496 5 1.5 6 1.499 7 1.509 8 1.498 9 1.489 10 1.509 
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