一个混合光电传感 (PPG) 传感器系统设计用于心率监测
Farjana Akter Jhuma1, Kentaro Harada2, Muhamad Affiq Bin Misran1
1Major of Device Science and Engineering, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Fukuoka 8160811, Japan.
Sensors (Basel, Switzerland)
|December 17, 2024
概括
这项研究引入了一种新型的混合光电显微镜 (PPG) 传感器,用于精确的健康监测. 优化的LED工作周期和光强度是精确的心率检测和高效功耗的关键.
科学领域:
- 生物医学工程 生物医学工程
- 光电学是指光电子产品.
- 可穿戴的健康技术
背景情况:
- 摄影脉冲图 (PPG) 传感器提供了一种具有成本效益的方法来测量生命体征,如心率,氧和率和呼吸率.
- 现有的PPG系统可以改进,以提高健康监测应用的准确性和效率.
研究的目的:
- 开发和评估一个混合PPG传感器系统,使用一个反射模式和一个集成的光电子模块.
- 通过分析LED工作周期和光强度对心率准确度和功耗的影响来优化传感器的性能.
主要方法:
- 设计了一个混合传感器系统,将无机发光二极管 (LED) 和圆形有机光电探测器 (OPD) 结合在反射配置中.
- 为精确的PPG信号采集,实施了专门的驱动电路.
- 快速里埃转换 (FFT) 分析被用于处理PPG信号以检测心率.
主要成果:
- 混合型PPG传感器系统展示了精确的心率监测能力.
- 通过50%的LED工作周期和250Hz的采样速率实现了最佳性能,从而产生了可接受的误差范围.
- 确定LED工作周期和光强度是影响心率精度和整体功耗的关键参数.
结论:
- 开发的混合PPG传感器系统为准确和高效的健康监测提供了一个有效的平台.
- 微调LED参数对于平衡基于PPG的设备的测量精度和能源效率至关重要.
- 这项技术对推进可穿戴健康技术和远程患者监控具有前景.
相关概念视频
01:30Pulse rhythm
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Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
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