Pulse Wave Measuring via Fingertip-Like Sensor to Analyze and Identify Pulse-Rate Status
Pulse Wave Measuring via Fingertip-Like Sensor to Analyze and Identify Pulse-Rate Status
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DOI：
10.1109/jsen.2022.3230696
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发表时间：
2023-02
影响因子：
4.3
通讯作者：
Yuhang Ma;Yunlong Zhao;Lu Liu;Ruiyu Bi;Xiaolong Zhu;Junbin Zang;Dong Guo;Ji-fang Men;
中科院分区：
文献类型：
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作者：
Yuhang Ma;Yunlong Zhao;Lu Liu;Ruiyu Bi;Xiaolong Zhu;Junbin Zang;Dong Guo;Ji-fang Men;
脉搏波包含了人体心血管系统的详细信息，与各种生理变化相关。为了实现微弱脉搏信号的无损提取，设计了一种基于压阻传感器的指尖式脉搏传感器。在传感机构中，外力通过柔性薄膜变形，传递到惠斯通电桥，实现力电转换测量。传感器实验表明，该传感器具有良好的线性度（${R}^{2}>0.9999$）、低迟滞（<1%）和高灵敏度（0.04 V/kPa）。研制了一种基于脉搏测量的脉搏采集装置，并将其应用于临床脉搏信号的测量。通过去除原始脉搏信号中的高频噪声和基线漂移，得到真实的脉搏信号。共招募了55名年龄在20-85岁之间的不同健康状况的志愿者，其中8名先前被诊断患有心律失常。结果表明，脉冲周期（PP）间隔呈现三种不同的分布模式。在不同位置和不同压力下获得的脉搏信号在数字脉搏诊断中具有潜在的应用。
Pulse wave contains detailed information about the human cardiovascular system and is associated with various physiological changes. A fingertip-like pulse sensor based on a piezoresistive sensor was constructed to extract weak pulse signals with lossless performance. In the sensing mechanism, the external force was deformed through the flexible film and transmitted to the Wheatstone bridge to realize the force–electric conversion measurement. The sensor experiments revealed that the sensor’s performance had excellent linearity ( ${R}^{2}>0.9999$ ), low hysteresis (<1%), and high sensitivity (0.04 V/kPa). A pulse acquisition device based on pulse measuring was developed and applied to clinical practice for pulse signal measurement. Genuine pulse signals were obtained by removing high-frequency noise and baseline drift from the original pulse signal. A total of 55 volunteers aged 20–85 years with different health conditions were recruited, and eight were previously diagnosed with arrhythmia. Results demonstrated that the pulse period (PP) interval presented three different distribution patterns. Pulse signals obtained at different locations with various pressures showed potential application in digital pulse diagnostics.