肺活量计
干涉测量
可穿戴计算机
光纤
潮气量
光学
呼吸速率
呼吸
光纤传感器
马赫-曾德尔干涉仪
计算机科学
灵敏度(控制系统)
材料科学
物理
电子工程
医学
呼吸系统
工程类
呼出气一氧化氮
气象学
支气管收缩
嵌入式系统
内科学
解剖
气道
作者
Ruihang Wang,Jing Zhao,Ye Sun,Hui Yu,Ning Zhou,Hongxia Zhang,Dagong Jia
摘要
Continuous respiratory monitoring is extensively important in clinical applications. To effectively assess respiration rate (RR), tidal volume (TV), and minute ventilation (MV), we propose and experimentally demonstrate a respiration monitoring system using an in-line few-mode fiber Mach-Zehnder interferometer (FMF-MZI), which is the first to introduce in-line MZI into an optimal wearable design for respiration rate and volume monitoring. The optimal linear region of the proposed sensor is analyzed and positioned by a flexible arch structure with curvature sensitivity up to 8.53 dB/m −1 . Respiration monitoring results are in good agreement with a standard spirometer among different individuals. The difference in TV estimation is ± 0.2 L, and the overall error of MV estimation is less than 5%.
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