| 改进小波阈值去噪在矿物油荧光检测信号中的应用 |
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| 引用本文： | 陈至坤,张菡洁,徐傲,王福斌.改进小波阈值去噪在矿物油荧光检测信号中的应用[J].化工自动化及仪表,2017,44(2). |
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| 作者姓名： | 陈至坤 张菡洁 徐傲 王福斌 |
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| 作者单位： | 华北理工大学电气工程学院 |
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| 基金项目： | 河北省自然科学基金项目 |
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| 摘 要： | 为减小由光电探测器产生的荧光信号中噪声的干扰,在经典小波阈值去噪方法的基础上,提出一种新的阈值函数去噪算法。这种新的阈值函数具有较好的连续性和稳定性,能够保留原始信号的特征。采用Matlab对比不同阈值函数的去噪效果,结果表明新的算法兼顾了软、硬阈值的优点,又在一定程度上弥补了传统小波阈值去噪方法的缺陷,提高了荧光信号的信噪比,获得了更好的去噪效果。
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| 关 键 词： | 荧光光谱仪 水中矿物油含量 荧光检测 小波变换 去噪 阈值函数 |
Application of Improved Wavelet Threshold Denoising in Fluorescence Detection Signal of Mineral Oil |
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| CHEN Zhi-kun,ZHANG Han-jie,XU Ao,WANG Fu-bin.Application of Improved Wavelet Threshold Denoising in Fluorescence Detection Signal of Mineral Oil[J].Control and Instruments In Chemical Industry,2017,44(2). |
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| Authors: | CHEN Zhi-kun ZHANG Han-jie XU Ao WANG Fu-bin |
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| Abstract: | For purpose of reducing the noise interference in fluorescence signals incurred by the photoelectric detector, a new de-noising algorithm for the threshold function was proposed.The new threshold function has good continuity and stability and it can retain the characteristics of the original signals.Comparing de-noising effect of different threshold functions by Matlab simulation experiment shows that, this new algorithm gives consideration to soft and hard threshold advantages;and it makes up for their shortcomings to a certain extent and improves the signal to noise ratio of the fluorescence signals together with a better de-noising effect. |
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| Keywords: | fluorescence spectrophotometer content of mineral oil in water fluorescence detection wavelet transform de-noising threshold function |
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