NAFAS: Non-Rigid Air Flow Active Sensor, a Cost-Effective, Wearable, and Ubiquitous Respiratory Bio-Sensor

A Non-rigid Air Flow Active Sensor (NAFAS) to detect the respiratory patterns is introduced in this paper. The main part of NAFAS is an ionic electroactive polymer-based (<inline-formula> <tex-math notation="LaTeX">{i} </tex-math></inline-formula>-EAP) soft sensor....

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Published inIEEE sensors journal Vol. 21; no. 7; pp. 9530 - 9537
Main Authors Annabestani, Mohsen, Esmaeili-Dokht, Pouria, Nejad, Sina Khazaee, Fardmanesh, Mehdi
Format Journal Article
LanguageEnglish
Published New York IEEE 01.04.2021
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
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Air flow
Biosensors
Breathing
Breathing pattern
Electroactive polymers
Electrodes
IPMC
Lung
Mechanical sensors
NAFAS
POCT
Polymers
Pulmonary functions
Respiratory diseases
Respiratory system
Sensors
soft sensor
Spirometers
Strain
Temperature measurement
Wearable technology
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Summary:A Non-rigid Air Flow Active Sensor (NAFAS) to detect the respiratory patterns is introduced in this paper. The main part of NAFAS is an ionic electroactive polymer-based (<inline-formula> <tex-math notation="LaTeX">{i} </tex-math></inline-formula>-EAP) soft sensor. It can accurately detect breathing patterns and has promising features to develop low cost, wearable, and ubiquitous spirometers. Patients with respiratory diseases need to take pulmonary function tests consistently. Hence, it is time-consuming and expensive. To address these problems, NAFAS presents point-of-care testing (POCT) of the respiratory system's function. The proposed <inline-formula> <tex-math notation="LaTeX">{i} </tex-math></inline-formula>-EAP based sensor is a small strip of Ionic Polymer Metal Composite (IPMC) that has been fabricated using a Nafion membrane and two Pt electrodes. A test, including different breathing patterns, is designed and is performed by several male and female subjects. Results show that the NAFAS can detect delicate breathing patterns with various frequencies in an appropriate manner.
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ISSN:1530-437X
1558-1748
DOI:10.1109/JSEN.2021.3053211