基于LabVIEW改进的光纤光栅传感器波长检测系统

Yanqun Wu, Yong-ming Hu
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引用次数: 4

摘要

介绍了一种基于LabVIEW的提高光纤光栅(FBG)传感器Bragg波长移精度的检测系统。在雷达和声纳时延估计中广泛应用的相位谱法,在不假设频谱形状和插值运算的情况下,提高了波长移检测精度。它适用于均匀测量场中的FBG传感器。数据处理通过调用LabVIEW平台上的动态链接库实现,快速得到估计结果。实验结果表明,与光谱相关等标准方法相比,该方法的精度更高,稳定性更强。
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An Improved Wavelength Detection System for Fiber Grating Sensors Based on LabVIEW
A detection system for enhancing the Bragg wavelength shift accuracy of fiber Bragg grating (FBG) sensors based on LabVIEW is described. The Phase Spectrum method, widely used in time delay estimation in the fields of radar and sonar, is applied to improve the wavelength shift detection accuracy without the assumption of the spectrum shapes and interpolation operation. It is suitable for FBG sensors in the homogeneous measurand fields. The data processing is realized by calling the dynamic link library on the LabVIEW platform to achieve the estimation result rapidly. Experimental results show that the accuracy of the proposed method is higher and more stable than that of the standard methods like the spectrum correlation method.
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