基于涡轮式气体流量传感器的用力呼气容量计算方法

王辰硕; 何光强; 李玥琪; 赵荣建; 陈贤祥; 杜利东; 赵湛; 方震

doi:10.11999/JEIT190051

基于涡轮式气体流量传感器的用力呼气容量计算方法

doi: 10.11999/JEIT190051

王辰硕^{1, 2},
何光强^{1, 2},
李玥琪^{1, 2},
赵荣建^{1, 2},
陈贤祥¹,
杜利东¹,
赵湛^{1, 2},
方震^{1, 2, ,}

1.
中国科学院电子学研究所传感技术国家重点实验室北京 100190
2.
中国科学院大学北京 100049

基金项目: 北京市自然科学基金重点研究专项(Z16003)，国家重点研发计划(2016YFC1304302)

详细信息

作者简介:
王辰硕：男，1993年生，博士生，研究方向为生命信息感知与计算

何光强：男，1995年生，硕士生，研究方向为可穿戴式技术

李玥琪：女，1990年生，博士生，研究方向为可穿戴式技术

赵荣建：男，1985年生，博士生，研究方向为生命信息感知技术

陈贤祥：男，1979年生，副研究员，硕士生导师，研究方向为可穿戴式技术

杜利东：男，1981年生，助理研究员，研究方向为微纳制造技术

赵湛：男，1958年生，研究员，博士生导师，研究方向为微纳制造技术，无线传感器网络，生命信息感知与计算

方震：男，1976年生，研究员，博士生导师，研究方向为可穿戴式技术

通讯作者:
方震　zfang@mail.ie.ac.cn

中图分类号: TN051
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出版历程
- 收稿日期: 2009-01-18
- 修回日期: 2019-05-14
- 网络出版日期: 2019-06-04
- 刊出日期: 2019-10-01

Calculation of Forced Vital Capacity Based on Turbine Air Flow Sensor

Chenshuo WANG^{1, 2},
Guangqiang HE^{1, 2},
Yueqi LI^{1, 2},
Rongjian ZHAO^{1, 2},
Xianxiang CHEN¹,
Lidong DU¹,
Zhan ZHAO^{1, 2},
Zhen FANG^{1, 2
, ,}

1.
State Key Laboratory of Transducer Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China
2.
University of Chinese Academy of Sciences, Beijing 100049, China

Funds: The Key Project of Beijing Municipal Natural Science Foundation(Z16003), The National Key Research and Development Project(2016YFC1304302)

摘要

摘要: 涡轮式气体流量传感器在用力肺功能测试中用于记录人体呼气信号，由于旋转惯性，对于相同用力呼气容量(FVC)值，测量结果因呼出气体流量而异，且差异值通常不可接受。针对该问题，该文通过在传统稳态涡轮流量计算模型的基础上引入速度惩罚项，构建一种FVC速度惩罚模型，与此同时，提出使用过幅降采样涡轮旋转周数算法，二者结合，提高了FVC测试结果的可接受性。利用国际通用的标准3 L定标桶，模拟真实用力肺功能测试过程，对算法的有效性进行验证。实验结果表明：所提方法能够有效降低前述差异，在一定程度上满足美国胸科协会(ATS)和欧洲呼吸学会(ERS)所提出的用力肺功能测试可接受标准和准确度要求。
- 用力肺功能测试 /
- 涡轮传感器 /
- 呼气信号处理 /
- 用力呼气容量 /
- 慢性阻塞性肺病
Abstract: Currently, the turbine air flow sensors are widely used to record the human exhalation signals in spirometry, but test results vary due to different expiratory flow for the same Forced Vital Capacity(FVC) measurements, and the differences are usually not in an acceptable range. To address this issue, a FVC velocity penalty model is proposed by introducing speed penalty items to the traditional mathematical model of turbine. Moreover, an over-amplitude drop sampling approach is used to calculate the rotations of the turbine due to the needs for the velocity penalty model to be able to accurately obtain the number of turbine rotations. The performance of the proposed approach is evaluated by using a syringe dispenser of 3L capacity, and results demonstrate that it can reduce the differences and meet the acceptable and accuracy criteria of the American Thoracic Society(ATS) and the European Respiratory Society(ERS) to some extent.
- Spirometry /
- Turbine sensors /
- Respiratory signal processing /
- Forced Vital Capacity(FVC) /
- Chronic Obstructive Pulmonary Disease(COPD)

HTML全文

图 1 呼气信号采集系统框图

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图 2 低频信号检测

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图 3 高频信号检测

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图 4 3种峰值流速下对不同体积的20次测试结果

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图 5 Bland-Altman图

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图 6 测量结果与真实值的相关性

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表 1 10次随机气体推进实验对涡轮旋转周数测量值与真实值对比

实验(次) 1 2 3 4 5 6 7 8 9 10

真实值(周) 256 150 178 358 321 89 205 316 56 124
测量值(周) 253 148 172 354 316 87 204 310 56 122

下载: 导出CSV

参考文献(19)

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