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在非磁性屏蔽环境中对磁心电图信号的否定方法的研究
Biao Xing1, Xie Feng2, Binzhen Zhang1
1Key Laboratory of Instrumentation Science & Dynamic Measurement, Ministry of Education, North University of China, Taiyuan 030051, China.
Sensors (Basel, Switzerland)
|October 16, 2025
概括
这项研究介绍了AOA-VMD-WT,这是磁心图 (MCG) 的综合无线化框架. 该方法在杂的环境中显著提高了信号质量,使得心血管疾病查更加稳定.
科学领域:
- 生物医学工程 生物医学工程
- 心血管生理学心血管生理学
- 信号处理 信号处理
背景情况:
- 磁心电图 (MCG) 通过弱磁场测量心脏电活动,用于非侵入性心血管疾病查.
- 外部磁干扰和生理工件严重降低了在未屏蔽环境中的MCG信号质量.
研究的目的:
- 开发和验证一个集成的无声化框架 (AOA-VMD-WT) 以提高临床环境中的MCG信号质量.
- 通过使用算术优化算法 (AOA) 进行自适应优化变化模式分解 (VMD) 参数,以提高排泄效率.
主要方法:
- 该AOA-VMD-WT框架通过AOA.使用VMD参数 (K,α) 进行自适应优化.
- 信号组件是基于模态中心频率的无声化:高频抑制 (≥50 Hz),波段值 (<50 Hz) 和基线校正 (<0.5 Hz).
- 使用QRS振幅保留,频率抑制和光谱的定量评估与FIR和波纹方法相比.
主要成果:
- AOA-VMD-WT方法显示出显著的改进:8-15dB高频抑制,2-8dB低频抑制和0.1-0.6降低光谱.
- 该框架保持了QRS振幅完整性.
- 通过AOA进行参数优化,在实验中显示出高稳定性.
结论:
- 拟议的AOA-VMD-WT框架在典型的临床环境中提供了强大而稳定的MCG信号消噪.
- 这种算法方法支持可靠的MCG测量,用于早期发现心血管疾病.
- 综合的无声化策略有效地减轻了影响MCG信号的各种噪音源.
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