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Open AccessArticle

A Smart Phone Based Handheld Wireless Spirometer with Functions and Precision Comparable to Laboratory Spirometers

Department of Biomedical Engineering, Ji Nan University, Guang Zhou 510632, China
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Author to whom correspondence should be addressed.
Sensors 2019, 19(11), 2487; https://doi.org/10.3390/s19112487
Received: 29 March 2019 / Revised: 23 May 2019 / Accepted: 27 May 2019 / Published: 31 May 2019
(This article belongs to the Special Issue Wireless Sensing Systems for Body Area Networks)
We report a smart phone based handheld wireless spirometer which uses a Lilly type sensing flowhead for respiratory signal acquisition and transmits the data to smartphone or other mobile terminals with Bluetooth signal transmission for data processing and result display. The developed spirometer was demonstrated to be able to detect flow rates ranging from 0–15 L/s with an accuracy of 4 mL/s, and can perform tests of flow volume (FV), forced vital capacity (FVC), forced expiratory volume in 1 s (FEV1), peak expiratory flow (PEF), etc. By having the functions and precision comparable to laboratory spirometers, it satisfies the American Thoracic Society and European Respiratory Society (ATS/ERS) proposed performance requirements for spirometer. At the same time, it is low cost, light and handy, low power consumption battery-powered. The test of 12 cases of subjects using the developed spirometer also indicated that it was easy to use for both providers and patients, and suitable for the Point of Care Test (POCT) of chronic obstructive pulmonary disease (COPD) and asthma at general-practice settings and homes. View Full-Text
Keywords: Portable spirometer; Lilly flowhead; smart phone base; handheld unit Portable spirometer; Lilly flowhead; smart phone base; handheld unit
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Zhou, P.; Yang, L.; Huang, Y.-X. A Smart Phone Based Handheld Wireless Spirometer with Functions and Precision Comparable to Laboratory Spirometers. Sensors 2019, 19, 2487.

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