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Updated: Sep 25, 2026

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

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Published on: December 27, 2012

使用高采样率THz技术估计胸部运动

Christoph Hoog Antink¹, Romina Schulz², Maurice Rohr¹

¹KIS*MED (AI Systems in Medicine Lab), Technische Universität Darmstadt, 64283 Darmstadt, Germany.

Sensors (Basel, Switzerland)

|June 10, 2023

概括

太赫兹 (THz) 光谱学准确地估计了呼吸对象的胸部运动和呼吸速率. 这种非接触式方法提供了一个精确的替代电心电图 (ECG) 衍生的呼吸,达到低的1.40 BPM误差.

科学领域:

生物医学工程生物医学工程
物理物理学物理
呼吸系统生理学呼吸系统生理学

背景情况:

估计呼吸速率对于监测患者健康至关重要.
电心电图 (ECG) 衍生呼吸是一种常见的方法,但具有局限性.
不需要接触,需要精确的呼吸监测.

研究的目的:

评价一台太赫兹 (THz) 均线光谱系统,用于估计胸部运动.
为了比较基于THz的呼吸估计与ECG衍生的呼吸.

主要方法:

使用了高采样率THz同体光谱系统.
健康的受试者进行了不同频率的呼吸.
胸部运动是根据THz阶段信息估计的.
记录了ECG信号以进行比较.

主要成果:

该THz系统提供了可用的运动和呼吸信号.
对一些受试者来说,来自心电图的呼吸表现低于最佳.
基于THz的呼吸估计实现了1.40 BPM的根平均平方误差.
在THz测量和协议之间观察到良好的一致性.

结论:

太赫兹光谱是一种可行的,准确的方法,用于非接触式呼吸监测.
这种THz系统在呼吸评估的可靠性方面超过了ECG.
THz技术为呼吸道监测应用提供了一个有前途的工具.

关键词:

这是一个光子的光子.呼吸速率呼吸速率呼吸速率呼吸速率太赫兹 (Terahertz) 是一个频率.不显眼的感知传感器

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相关概念视频

Sampling Theorem

Sampling Theorem

In signal processing, the analysis of continuous-time signals, denoted as x(t), often involves sampling techniques to convert these signals into discrete-time signals. This process is essential for digital representation and manipulation. A critical component in sampling is the train of impulses, characterized by the sampling interval and the sampling frequency. The relationship between these parameters and the original signal's properties dictates the success of the sampling process.