使用光学功率检测方案的纤维布拉格格感应器测量血压和心率
1Institute of Photonics Technologies, National Tsing Hua University, Hsinchu 300, Taiwan.
Sensors (Basel, Switzerland)
|April 12, 2025
概括
一个新的低成本纤维布拉格格系统使用脉冲波形准确估计血压 (BP). 这种利用脉冲过渡时间的方法显示出高准确度,并优于现有模型.
科学领域:
- 生物医学工程 生物医学工程
- 光学传感传感器是什么?
- 心血管监测 心血管监测
背景情况:
- 精确的血压 (BP) 监测对于心血管健康管理至关重要.
- 现有的血压测量方法可能是侵入性的或繁的.
- 需要新的,非侵入性的,低成本的BP估计技术.
研究的目的:
- 开发和验证一种低成本的双纤维布拉格格 (FBG) 系统,用于非侵入性血压估计.
- 通过将估计的BP与参考测量进行比较来评估开发系统的准确性.
- 与现有模型相比,评估开发的BP估计模型的性能.
主要方法:
- 利用双FBG架构通过光学功率变化从手腕捕获动脉脉冲波形.
- 从捕获的波形中提取脉冲过渡时间 (PTT),脉冲上升时间和脉冲下降时间.
- 通过将提取的脉冲波形参数与血压计的参考BP测量相匹配,开发了一个BP估计模型.
- 通过使用年龄在20-54岁之间的29名受试者的数据来验证该模型.
主要成果:
- 开发的血压估计模型表现出高准确度,对于静缩 (SBP) 和静缩 (DBP) 血压,误差在-4至5mmHg之间.
- SBP和DBP的平均误差分别为0.72 mmHg和0.83 mmHg.
- 在SBP和DBP的标准误差分别为2.45mmHg和2.59mmHg.
- 采用多个脉冲波形参数的模型表现优于仅使用PTT的模型.
结论:
- 低成本的双FBG系统为准确的血压监测提供了一个有希望的非侵入性方法.
- 开发的估计模型利用详细的脉冲波形分析,与仅使用PTT的方法相比,提供了更高的准确性.
- 这项技术有可能在远程和持续的心血管健康评估中得到广泛应用.
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