Spirometer Based on Vortex Whistle to Monitor Lung Disorders

Yoshida, T.; Hamada, Yuri; Nakamura, Sousuke; Kurihara, Yui; Watanabe, Ko

doi:10.1109/jsen.2022.3170314

Cited by 4 publications

(2 citation statements)

References 32 publications

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“…These smartphone-based spirometers perform the respiratory data acquisition, processing, and displaying its data representation on its screen. Respiratory data was acquired by sensing exhalation or cough audio frequency signal via smartphone microphone/audio line-in using audio processing and machine learning in [28]- [35]. These spirometers offer rapid and simple screening tools.…”

Section: Introductionmentioning

confidence: 99%

Portable spirometer using pressure-volume method with Bluetooth integration to Android smartphone

Widianto

Huda

Nurhayati

2023

IJECE

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<span lang="EN-US">This paper presents a study on an embedded spirometer using the low-cost MPX5100DP pressure sensor and an Arduino Uno board to measure the air exhaled flow rate and calculate force vital capacity (FVC), forced expiratory volume in 1 s (FEV1), and the FEV1/FVC ratio of human lungs volume. The exhaled air flow rate was measured from differential pressure in the sections of a mouthpiece tube using the venturi effect equation. This constructed mouthpiece and the embedded spirometer resulted in a 96.27% FVC reading accuracy with a deviation of 0.09 L and 98.05% FEV1 accuracy with a deviation of 0.05 L compared to spirometry. This spirometer integrates an HC-05 Bluetooth module for spirometry data transceiving to a smartphone for display and recording in an Android application for further chronic obstructive pulmonary disease (COPD) diagnosis.</span>

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Section: Introductionmentioning

confidence: 99%

Portable spirometer using pressure-volume method with Bluetooth integration to Android smartphone

Widianto

Huda

Nurhayati

2023

IJECE

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“…Flow-measuring designs include turbine sensors, hot-wire anemometers, and ultrasonic flowmeters. [10][11][12][13] While many of these architectures have been validated, there are advantages and disadvantages to a given sensing mechanism. For example, ultrasonic and hotwire anemometry flow detection are generally costly and require complex calibration.…”

Section: Introductionmentioning

confidence: 99%

Bidirectional Venturi Flowmeter Based on Capacitive Sensors for Spirometry

Becerra,

Rafeedi,

Ramanarayanan

et al. 2023

Adv Materials Technologies

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In this work, a portable venturi tube capable of measuring bidirectional respiratory flow is developed and correlated the measurements to pulmonary function. Pressure signals are transduced using flexible and compressible capacitive foam sensors embedded into the wall of the device. In this configuration, the sensors are able to provide differential pressure readings, from which the airflow rate passing through the tube could be extrapolated. Utilizing the venturi effect, the geometry of the spirometer tube is designed through finite element analysis to measure respiratory airflow during inhalation and exhalation. The device tube is 3D‐printed and used to measure tidal breathing and deep breathing, along with peak expiratory flow rates, on a healthy individual. This spirometer design allows for easy‐to‐use point‐of‐care diagnoses and has the potential to improve the care of respiratory illnesses.

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