EEMD在同时消除脉搏血氧检测中脉搏波信号高频噪声和基线漂移中的应用

韩庆阳; 王晓东; 李丙玉; 周鹏骥

doi:10.11999/JEIT141390

EEMD在同时消除脉搏血氧检测中脉搏波信号高频噪声和基线漂移中的应用

doi: 10.11999/JEIT141390

计量
- 文章访问数: 1287
- HTML全文浏览量: 112
- PDF下载量: 573
- 被引次数: 0
出版历程
- 收稿日期: 2014-10-31
- 修回日期: 2015-02-06
- 刊出日期: 2015-06-19

Using EEMD to Eliminate High Frequency Noise and Baseline Drift in Pluse Blood-oximetry Measurement Simultaneously

摘要

摘要: 人体血氧饱和度是基于脉搏波信号测量得到的，然而在脉搏波信号采集的过程中存在着由人体呼吸和仪器本身热噪声等带来的基线漂移和高频噪声，影响人体血氧饱和度的测量精度。因此，该文提出一种总体平均经验模态分解(Ensemble Empirical Mode Decomposition, EEMD)与基于排列熵(Permutation Entropy, PE)的信号随机性检测相结合的方法，同时消除基线漂移和高频噪声。对脉搏波信号进行EEMD分解，计算分解到得到的内在模式分量的排列熵，选取阈值，分别判断并剔除代表高频噪声和基线漂移的内在模式分量。最后信号重构就得到同时消除高频噪声和基线漂移的脉搏波信号。通过自行研制的测量装置所采集的脉搏波信号进行实验验证，利用信号的频谱和交直流比R评价效果。结果表明：该方法有效地同时消除了脉搏波信号中的高频噪声和基线漂移，这将有利于人体血氧饱和度测量精度的提高。
- 脉搏波信号 /
- 人体血氧饱和度 /
- 高频噪声 /
- 基线漂移 /
- 总体平均经验模态分解 /
- 排列熵
Abstract: The measurement of blood-oxygen saturation is based on the pulse wave signal, but there are many factors impact the accuracy of measurement, such as high frequency noise caused by instrument thermal noise and baseline drift caused by the breath. A method which combines Ensemble Empirical Mode Decomposition (EEMD) and Permutation Entropy (PE) is proposed, it can decrease high frequency noise and baseline drift. The pulse wave signal is decomposed by EEMD, the PE of each Intrinsic Mode Function (IMF) is calculated and the threshold value of PE is chosen. Then the IMFs which present high frequency noise and baseline drift are judged and decreased. Finally, the signal without high frequency noise and baseline drift is achieved. A self-developed measurement device is used to obtain the pulse wave for testing validation, and the signal spectrum and AC-DC modulation ratio value are adopted to evaluate the effect. The result shows that this method could effectively remove high frequency noise and baseline drift, which is conducive to improve the accuracy of blood-oxygen saturation.
- Pulse wave signal /
- Oxygen saturation /
- High frequency noise /
- Baseline drift /
- Ensemble Empirical Mode Decomposition (EEMD) /
- Permutation Entropy (PE)

HTML全文

参考文献(30)

刘广伟, 毛陆虹, 谢生, 等. 一种光电反射式脉搏血氧检测方法[J]. 光电子激光, 2014, 25(3): 620-624.

Liu Guang-wei, Mao Lu-hong, Xie Sheng, et al.. A monitoring method of blood-oxygen saturation using reflection type photoelectric sensor[J]. Journal of OptoelectronicsLaser, 2014, 25(3): 620-624.

韩庆阳, 李丙玉, 王晓东. 一种消除脉搏波信号中呼吸基线漂移的方法[J]. 中国医疗器械杂志, 2014, 38(1): 19-22.

Han Qing-yang, Li Bing-yu, and Wang Xiao-dong. The method of removing breathing baseline in pluse wave signal[J]. Chinese Journal Medical Instrumentation, 2014, 38(1): 19-22.

韩庆阳, 李丙玉, 王晓东. 一种同时消除脉搏波信号中呼吸基线漂移和高频噪声的方法[J]. 中国医学物理学杂志, 2014, 31(2): 4801-4805.

Han Qing-yang, Li Bing-yu, and Wang Xiao-dong. The method of simultaneously removing breathing baseline and high-frequency noise in pluse wave signal[J]. Chinese Journal of Medical Physics, 2014, 31(2): 4801-4805.

韩庆阳, 李丙玉, 王晓东. 基于小波变换的脉搏波信号高频噪声与呼吸基线的同时消除[J]. 北京生物医学工程, 2014, 33(6): 247-252.

Han Qing-yang, Li Bing-yu, and Wang Xiao-dong. Synchronous removal of high-frequency noise and breathing baseline in pulse wave signal based on wavelet analysis[J]. Beijing Biomedical Engineering, 2014, 33(6): 247-252.

李庆波, 韩庆阳. 人体血氧饱和度检测中消除脉搏波信号高频噪声的方法[J]. 光谱学与光谱分析, 2012, 32(9): 2523-2527.

Li Qing-bo and Han Qing-yang. The method of removing high-frequency noise in pulse wave signal in detecting oxygen saturation of human[J]. Spectroscopy and Spectral Analysis, 2012, 32(9): 2523-2527.

李庆波, 聂鑫, 张广军, 等. 分段滤波用于消除脉搏血氧检测中多种运动干扰的研究[J]. 光谱学与光谱分析, 2009, 29(11): 2992-2997.

Li Qing-bo, Nie Xin, Zhang Guang-jun, et al.. Study on resistance to motion artifact in pulse oximetry measurement using segment filter method[J]. Spectroscopy and Spectral Analysis, 2009, 29(11): 2992-2997.

王晓飞, 赵文俊. 基于动态光谱法的多波长脉搏血氧饱和度测量[J]. 光谱学与光谱分析, 2014, 34(5): 1323-1326.

Wang Xiao-fei and Zhao Wen-jun. Measurement of multi- wavelenth pluse oxygen saturation based on dynamic spectroscopy[J]. Spectroscopy and Spectral Analysis, 2014, 34(5): 1323-1326.

张晓枫, 张香武, 赵春华, 等. 基于脉搏光谱分形算法的血氧测量研究[J]. 长春理工大学学报(自然科学版), 2014, 37(2): 95-97.

Zhang Xiao-feng, Zhang Xiang-wu, Zhao Chun-hua, et al.. Research on oximetry based on pulse sprectrum fractal algorithm[J]. Journal of Changchun University of Science and Technology (Natural Science Edition), 2014, 37(2): 95-97.

凌振宝, 张铭, 熊文激, 等. 基于脉搏波传导时间的无袖带血压测量仪设计[J]. 电子测量与仪器学报, 2012, 26(12): 1080-1085.

Ling Zhen-bao, Zhang Ming, Xiong Wen-ji, et al.. Design of sleeveless blood pressure measuring instrument based on pulse wave transit time[J]. Journal of Electronic Measurement and Instrument, 2012, 26(12): 1080-1085.

王玉静, 康守强, 张云, 等. 基于集合经验模态分解敏感固有模态函数选择算法的滚动轴承识别方法[J]. 电子与信息学报, 2014, 36(3): 595-600.

Wang Yu-jing, Kang Shou-qiang, Zhang Yun, et al.. Condition recognition method of rolling bearing based on ensemble empirical mode decomposition sensitive intrinsic mode function selection algorithm[J]. Journal of Electronics Information Technology, 2014, 36(3): 595-600.

何星, 王宏力, 姜伟, 等. 改进的自适应EEMD方法及其应用[J]. 系统仿真学报, 2014, 26(4): 869-873.

He Xing, Wang Hong-li, Jiang Wei, et al.. Improved adaptive EEMD method and its application[J]. Journal of System Simulation, 2014, 26(4): 869-873.

王姣, 李振春, 王德营. 基于CEEMD的地震数据小波阈值去噪方法研究[J]. 石油物探, 2014, 53(2): 164-172.

Wang Jiao, Li Zhen-chun, and Wang De-ying. A method for wavelet threshold denoising of seismic data based on CEEMD[J]. Geophysical Prospecting for Petroleum, 2014, 53(2): 164-172.

冯辅周, 饶国强, 司爱威, 等. 排列熵算法研究及其在振动信号突变检测中的应用[J]. 振动工程学报, 2012, 25(2): 221-224.

Feng Fu-zhou, Rao Guo-qiang, Si Ai-wei, et al .. Research and application of the arthimetic if PE in testing the sudden change of vibration signal[J]. Journal of Vibration Engineering, 2012, 25(2): 221-224.

冯辅周, 司爱威, 饶国强, 等. 基于小波相关排列熵的轴承早期故障诊断技术[J]. 机械工程学报, 2012, 48(13): 73-79.

Feng Fu-zhou, Si Ai-wei, Rao Guo-qiang, et al.. Early fault diagnosis technology for bearing based on wavelet correlation permutation entropy[J]. Journal of Machinery Engineering, 2012, 48(13): 73-79.

郑德近, 程军圣, 杨宇. 改进的EEMD算法及其应用研究[J]. 振动与冲击, 2013, 32(21): 22-46.

Zhen De-jin, Cheng Jun-sheng, and Yang Yu. Modified EEMD algorithm and its applications[J]. Journal of Vibration and Shock, 2013, 32(21): 22-46.

施引文献

资源附件(0)

访问统计