Research on Subcutaneous Pulse Shape Measurement by Near-infrared Moiré Technique

Research on Subcutaneous Pulse Shape Measurement by Near-infrared Moiré Technique
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近红外莫尔技术皮下脉冲波形测量研究

DOI:
10.3807/josk.2015.19.2.123
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发表时间:
2015-04
影响因子:
--
通讯作者:
Rong-Seng Chang
Rong-Seng Chang
中科院分区:
工程技术4区
文献类型:
--
作者:
Ying-Yun Chen;Zhizhen Liu;Jian Du;Rong-Seng Chang

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当心脏将血液泵入动脉系统时产生脉搏。心脏只有在收缩时才泵血,而不是在放松时;因此,血液以循环的形式进入动脉系统。在身体表面的某些部位可以看到动脉搏动,例如手腕的桡动脉。本文主要利用近红外光谱穿透皮肤的特点,构建了一种能够测量人体皮下组织微小振动的无创测量系统,并将其用于脉搏测量。该测量系统使用光学莫尔原理,连同由皮下组织中的小振动产生的条纹位移,以及图像分析程序来计算皮下组织中的小振动的高度变化。它完成了一个测量系统,记录高度随时间的变化,并与快速傅立叶变换(FFT)程序一起,他们可以将振动产生的脉冲波形(时间-幅度)转换为心跳频率(频率-幅度)。这是一种新型的、无创的人体脉搏测量医疗辅助系统,具有简单、快速、安全、客观的优点。
A pulse is generated when the heart pumps blood into the arterial system. The heart pumps blood only when it contracts, not when it relaxes; therefore, blood enters the arterial system in a cyclical form. Artery beating is visible in some parts of the body surface, such as the radial artery of the wrist. This paper mainly uses the feature in which near-infrared spectroscopy penetrates skin to construct a non-invasive measurement system that can measure small vibration in the subcutaneous tissue of the human body, and then uses it for the pulse measurement. This measurement system uses the optical moire principle, together with the fringe displacement made by small vibration in the subcutaneous tissue, and an image analysis program to calculate the height variation from small vibrations in the subcutaneous tissue. It completes a measurement system that records height variation with time, and that together with a fast Fourier transform (FFT) program, they can convert the pulse waveform generated by vibration (time-amplitude) to heartbeat frequency (frequency-amplitude). This is a new and non-invasive medical assistance system for measuring the pulse of the human body, with the advantages of being simple, fast, safe and objective.
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