access icon free Graphene oxide-based radiofrequency identification wearable sensor for breath monitoring

© The Institution of Engineering and Technology
Received 03/07/2017, Accepted 19/01/2018, Revised 22/12/2017, Published 22/01/2018

The monitoring of the breathing dynamic characteristics, including the presence of biomarkers in exhaled breath, is of growing interest in non-invasive diagnosis of diseases. The authors describe a wearable radiofrequency identification device hosting a flexible antenna suitable for integration into a facemask and a sensor made of graphene oxide sensitive to the humidity variations. The resulting sensor tag was characterised in reference conditions while its communication performance was estimated by electromagnetic simulations as well as measurements over a simplified model of the human head. Finally, the whole system was tested on a volunteer and was experimentally demonstrated to be capable of detecting the inhalation/exhalation cycles and abnormal patterns of respiration like the apnea by measuring the changes in graphene oxide resistance.

Inspec keywords: pneumodynamics; radiofrequency identification; wearable antennas; diseases; graphene devices; patient monitoring; body sensor networks; electric resistance measurement; patient diagnosis

Other keywords: breath monitoring; resulting sensor tag; wearable radiofrequency identification device; inhalation cycle detection; exhalation cycle detection; graphene oxide-based radiofrequency identification wearable sensor; electromagnetic simulations; noninvasive disease diagnosis; communication performance; reference conditions; graphene oxide resistance; breathing dynamic characteristics monitoring; human head model; flexible antenna; facemask; respiration abnormal pattern detection; humidity variations

Subjects: Biomedical measurement and imaging; Impedance and admittance measurement; Fullerene, nanotube and related devices; RFID systems; Patient care and treatment; Biomedical communication; Single antennas; Wireless sensor networks

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