运动工件 (MA) 在静止时测量动脉脉冲信号:在每个和非平和MA合基线中的时间变化的振幅
M D Mahfuzur Rahman1, Mamun Hasan1, Zhili Hao1
1Department of Mechanical and Aerospace Engineering, Old Dominion University, Norfolk, VA 23529, USA.
Biosensors
|September 26, 2025
概括
动脉脉冲信号中的运动工件 (MA) 不仅仅是基线漂移 (BD). 新的研究表明,时间变化的系统参数 (TVSP) 也会影响脉冲信号波,影响精度.
科学领域:
- 生物医学工程 生物医学工程
- 信号处理 信号处理
- 生理监测 生理监测
背景情况:
- 运动工件 (MA) 引入了测量动脉脉冲信号的显著变化.
- 仅仅将MA视为基线漂移 (BD) 不够用于准确的信号分析.
研究的目的:
- 在动脉脉冲信号中开发MA的分析模型.
- 用触觉传感器研究低频MA (<0.7Hz) 对测量脉冲信号的影响.
主要方法:
- 开发了组织接触传感器 (TCS) 堆作为1DOF系统的分析模型.
- 量化MA作为基线漂移 (BD) 和时间变化的系统参数 (TVSP).
- 利用时间频率分析 (TFA) 来分析测量的脉冲信号.
主要成果:
- 分析模型显示,TVSP导致测量脉冲信号中的时间变化的波.
- TFA验证了TVSP的存在及其对信号波的影响.
- 识别了非平面波-MA合基线作为TVSP的影响.
结论:
- 动脉脉冲信号中的MA包括BD和TVSP.
- TVSP显著影响测量信号的和声内容和基线特征.
- 精确的动脉脉冲信号分析需要考虑MA的BD和TVSP组件.
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