Design Analysis and Human Tests of Foil-Based Wheezing Monitoring System for Asthma Detection
Name:
Final Manuscript (PDF).pdf
Size:
1.771Mb
Format:
PDF
Description:
Accepted manuscript
Type
ArticleKAUST Department
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) DivisionElectrical Engineering Program
Integrated Nanotechnology Lab
Office of the VP
Physical Science and Engineering (PSE) Division
Date
2019-12-30Online Publication Date
2019-12-30Print Publication Date
2020-01Permanent link to this record
http://hdl.handle.net/10754/660552
Metadata
Show full item recordAbstract
We present a flexible acoustic sensor that has been designed to detect wheezing (a common symptom of asthma) while attached to the chest of a human. We adopted a parallel-plate capacitive structure using air as the dielectric material. The pressure (acoustic) waves from wheezing vibrate the top diaphragm of the structure, thereby changing the output capacitance. The sensor is designed in such a way that it resonates in the frequency range of wheezing (100-1000 Hz), which presents twofold benefits. The resonance results in large deflection of the diaphragm that eradicates the need for using signal amplifiers (used in microphones). Second, the design itself acts as a low-pass filter to reduce the effect of background noise, which mostly lies in the >1000-Hz frequency range. The resulting analog interface is minimal, and thus consumes less power and occupies less space. The sensor is made up of low-cost sustainable materials (aluminum foil) that greatly reduce the cost and complexity of manufacturing processes. A robust wheezing detection (matched filter) algorithm is used to identify different types of wheezing sounds among the noisy signals originating from the chest that lie in the same frequency range as wheezing. The sensor is connected to a smartphone via Bluetooth, enabling signal processing and further integration into digital medical electronic systems based on the Internet of Things (IoT). Bending, cyclic pressure, heat, and sweat tests are performed on the sensor to evaluate its performance in simulated real-life harsh conditions.Citation
Khan, S. M., Qaiser, N., Shaikh, S. F., & Hussain, M. M. (2020). Design Analysis and Human Tests of Foil-Based Wheezing Monitoring System for Asthma Detection. IEEE Transactions on Electron Devices, 67(1), 249–257. doi:10.1109/ted.2019.2951580Publisher
IEEEAdditional Links
https://ieeexplore.ieee.org/document/8928940/https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=8928940
ae974a485f413a2113503eed53cd6c53
10.1109/TED.2019.2951580