开发一个用于智能环的旋转强大的PPG传感器.
Min Wang1, Wenqi Shi1, Jianyu Zhang1
1School of Integrated Circuits (School of Information Science and Electronic Engineering), Shanghai Jiao Tong University, Shanghai 200240, China.
Sensors (Basel, Switzerland)
|October 29, 2025
概括
这项研究引入了一种用于智能戒指的新型旋转稳固光电解剖学 (PPG) 传感器,提高了生命体征监测的准确性. 开发的传感器确保了可靠的心率估计尽管环运动,对于心血管疾病管理至关重要.
科学领域:
- 生物医学工程 生物医学工程
- 可穿戴技术可穿戴技术
- 光学传感传感器是什么?
背景情况:
- 心血管疾病 (CVD) 是全球主要的死亡原因,需要持续监测生命体征.
- 摄影电磁镜 (PPG) 非常适合可穿戴设备,智能戒指提供舒适性和高质量的信号捕获.
- 环旋转会破坏PPG信号的准确性,因为光学路径发生了变化,特别是多波长光.
研究的目的:
- 提出和开发一个专门用于智能环应用的旋转强大的PPG传感器.
- 为了优化LED-光电模角度,以提高光子透率和信号质量.
- 评估开发的智能戒指原型用于生命体征监测的准确性和效率.
主要方法:
- 蒙特卡洛模拟被用来分析光子传输通过各种LED光电角度.
- 开发了一个对称的传感器设计,具有优化的绿光角度 (±30°).
- 一个智能环的原型被制造出来,可以记录多通道的PPG,加速度和温度数据.
主要成果:
- 在特定的LED-光电模角度确定了最佳的光线透到微循环层.
- 原型智能环证明了可靠的PPG采集,平均电流消耗低 (0.59 mA).
- 心率估计通过绿色,红色和红外光实现了低平均绝对误差 (0.78-0.82bpm).
结论:
- 开发的旋转强大的PPG传感器设计对智能戒指有效.
- 这项技术为可穿戴设备中准确,持续的生命体征监测提供了一个有前途的解决方案.
- 这些发现为未来开发用于健康应用的智能戒指提供了宝贵的见解.
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