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首页> 外文期刊>Journal of Sensors >Study of Three-Component FBG Vibration Sensor for Simultaneous Measurement of Vibration, Temperature, and Verticality
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Study of Three-Component FBG Vibration Sensor for Simultaneous Measurement of Vibration, Temperature, and Verticality

机译：同时测量振动，温度和垂直度的三分量FBG振动传感器的研究

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摘要

To achieve simultaneous measurement of measurand vibration, temperature, and verticality, a three-component fiber Brag grating (TVFBG) vibration sensor is proposed in this paper. Polymer and metal diaphragm sensitization methods are utilized to improve this sensor measurement sensitivity. Project matrix theory is adopted to analyze this sensor. Theoretically,9×9nonsingular measuring coefficient matrix of this TVFBG sensor made up by three3×3measurand coefficient matrixes is established. In order to effectively extract measurand, Hilbert-Huang transform (HHT) is accepted to process this sensor’s center wavelength signals. Calibration experiments are carried out to verify the performance of this TVFBG sensor. Experiment data confirm that this sensor has excellent frequency response and show good linearity at temperature and verticality measurement. Wrist rotation angle measurement experiment is also implemented to further identify this sensor practical value. Through analyzing by HHT, experiment results show that the angle measurement sensitivities of three fiber Brag gratings which are included in this sensor are separately 25.2 pm/°, 38.2 pm/°, and 38.3 pm/°.
机译：为了实现对被测振动，温度和垂直度的同时测量，提出了一种三分量光纤布拉格光栅（TVFBG）振动传感器。聚合物和金属膜敏化方法被用来改善这种传感器的测量灵敏度。采用项目矩阵理论分析该传感器。从理论上讲，建立了由3×3个测量系数矩阵组成的TVFBG传感器的9×9非奇异测量系数矩阵。为了有效地提取被测量物，接受了希尔伯特-黄变换（HHT）处理该传感器的中心波长信号。进行校准实验以验证该TVFBG传感器的性能。实验数据证实，该传感器具有出色的频率响应，并且在温度和垂直度测量中显示出良好的线性。还进行了腕部旋转角度测量实验，以进一步确定该传感器的实用价值。通过HHT分析，实验结果表明，该传感器中包含的三个光纤布拉格光栅的角度测量灵敏度分别为25.2 pm /°，38.2 pm /°和38.3 pm /°。

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