Fitted algorithm to improve the precision of demodulation system of Bragg grating sensor

JIANG De-sheng; GAO Zhuo-ting; ZHANG Cui

doi:10.13873/j.1000-97872006.04.023

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Fitted algorithm to improve the precision of demodulation system of Bragg grating sensor

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- Fitted algorithm to improve the precision of demodulation system of Bragg grating sensor
- Issue 4, Pages: 65-66+69(2006)
- 作者机构：
  
  1. 武汉理工大学光纤传感技术研究中心
  2. 武汉理工大学光纤传感技术研究中心,湖北,武汉,430070
- 作者简介：
- 基金信息：
- DOI：10.13873/j.1000-97872006.04.023
  CLC： TN253
- Published：2006
- 稿件说明：
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[1]姜德生,高卓婷,张翠.提高Bragg光栅解调系统精度的拟合算法[J].传感器与微系统,2006(04):65-66+69.

JIANG De-sheng, GAO Zhuo-ting, ZHANG Cui. Fitted algorithm to improve the precision of demodulation system of Bragg grating sensor[J]. 2006, (4): 65-66+69.
[1]姜德生,高卓婷,张翠.提高Bragg光栅解调系统精度的拟合算法[J].传感器与微系统,2006(04):65-66+69. DOI： 10.13873/j.1000-97872006.04.023.

JIANG De-sheng, GAO Zhuo-ting, ZHANG Cui. Fitted algorithm to improve the precision of demodulation system of Bragg grating sensor[J]. 2006, (4): 65-66+69. DOI： 10.13873/j.1000-97872006.04.023.

摘要

为了在自主研发设备的基础上

从软件算法上提高光纤光栅传感解调系统的精度

利用装有标准光纤光栅阵列的解调系统

提出一种动态曲线拟合方法。这一算法基于拉格朗日公式的

并选取3个点作近似的拉格朗日曲线拟合

其中一个点可根据实验数据人为设置及调整

从而得到精确的拟合曲线。传感光栅的反射或透射波长测量误差≤±7 pm

提高了光纤光栅传感解调系统的精度。

Abstract

A dynamic fitted curve algorithm is proposed to improve the precision of demodulation system of Bragg grating sensor

when only relative software needs to be changed.Based on Lagrange expressions

group of approximative Lagrange fitted curve is worked out by picking out three pairs of data

one pair of them can be set and modify according to experiment data for sake of precision.Errors of the reflected wavelength is ±7 pm

the precision of demodulation system of Bragg grating sensor is improved.

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references

光纤布拉格光栅温度传感技术研究 [D]. 柴伟. 武汉理工大学 2004

新型光纤Bragg光栅解调系统研究 [D]. 许儒泉. 武汉理工大学 2004

光纤布拉格光栅传感解调系统的研究与开发 [D]. 尹进. 武汉理工大学 2003

光纤光栅传感信号解调技术 [D]. 张昕明. 黑龙江大学 2002

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