Design and experimental research for a new kind of lung function parameters measurement device

Zhanshe Guo; Chao Lu; Xiangdang Liang; Ke Song; Le Cao

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Design and experimental research for a new kind of lung function parameters measurement device

机译：一种新型肺功能参数测量装置的设计与实验研究

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A kind of device based on pressure differential theory is introduced to measure the physiological parameters of people's lungs. This device possesses the advantages of small size, low power consumption and easy handling. It is not only able to overcome the effect of humidity caused by thermal airflow sensor, but also able to conveniently realise the simultaneous measurement of airflow and pressure with high precision. For this purpose, a four-way tube is designed and fabricated. Detailed theoretical analysis and simulation are used to verify the correctness of the structure. The digital signal processing and complex programmable logic device system is used and corresponding algorithms for the lung function parameters are programmed. Then, the measuring error of system is analysed by the error theory. The accomplished device is calibrated in the National Institute of Metrology of China, and the maximum relative error between the standard and measured results is about 2.84%. Clinical trials indicate that when the vital capacity is 5800, the relative error between the standard system and this device is just 0.6%, which suggests that this device can measure the lung function parameters at a higher level.

机译：引入了一种基于压差理论的装置来测量人肺的生理参数。该装置具有体积小，功耗低和易于处理的优点。它不仅可以克服由热气流传感器引起的湿度影响，而且还可以方便地实现高精度的同时测量气流和压力。为此目的，设计并制造了一种四通管。详细的理论分析和仿真用于验证结构的正确性。使用了数字信号处理和复杂的可编程逻辑设备系统，并对肺功能参数的相应算法进行了编程。然后，利用误差理论对系统的测量误差进行了分析。所完成的设备在中国计量科学研究院进行了校准，标准与测量结果之间的最大相对误差约为2.84％。临床试验表明，当肺活量为5800时，标准系统与该设备之间的相对误差仅为0.6％，这表明该设备可以在更高水平上测量肺功能参数。

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《Science, Measurement & Technology, IET》 |2016年第7期|679-685|共7页
作者
Zhanshe Guo; Chao Lu; Xiangdang Liang; Ke Song; Le Cao;
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作者单位

Beihang University, People's Republic of China;

Beihang University, People's Republic of China;

Chinese PLA General Hospital, People's Republic of China;

Beihang University, People's Republic of China;

Beihang University, People's Republic of China;

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正文语种 eng
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temperature sensors; biomedical measurement; biomedical transducers; calibration; digital signal processing chips; flow measurement; flow sensors; lung; measurement errors; pressure measurement; pressure sensors; programmable logic devices; temperature measurement;

机译：温度传感器;生物医学测量;生物医学传感器;校准;数字信号处理芯片;流量测量;流量传感器;肺;测量误差;压力测量;压力传感器;可编程逻辑器件;温度测量;

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Design and experimental research for a new kind of lung function parameters measurement device

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