TELKOMNIKA Telecommunication Computing Electronics and Control
Airflow vibration of diaphragmatic breathing: model and demonstration using optical biosensor

TELKOMNIKA Telecommunication Computing Electronics and Control
Airflow vibration of diaphragmatic breathing: model and demonstration using optical biosensor

Airflow
Diaphragm
Fiber optic sensor
Navier-Stokes
Sinusoidal bending

Optical fiber is increasingly popular and appreciated as a modern sensor
technology in various sectors, one of which is for medical functions. This
study was conducted to detect human diaphragmatic breathing flow using
theoretical and experimental approaches. Initially, the lung model was
formed using the finite element method and the Navier-Stokes equation by
applying the principles of momentum and continuity. Furthermore, fiber
Bragg grating (FBG) and single mode fiber (SMF) were experimentally
designed with sinusoidal patterned macro-scale bending as a stretch sensor
in a breathing belt applied to the diaphragm. The simulation model shows
the airflow velocity increases up to 4 m/s when it flows into smaller
branches. While the experimental results show that the largest power loss
occurs at a buffer diameter of 0.8 cm. The power loss detected in SMF is a
maximum of -0.18 dBm during inhalation and a minimum of -0.28 dBm
during expiration. However, FBG bending is superior with high sensitivity.

Toto Saktioto, Defrianto, Nurfi Hikma, Yan Soerbakti, Syamsudhuha, Dedi Irawan, Okfalisa, Bambang Widiyatmoko, Dwi Hanto

http://telkomnika.uad.ac.id

Oct 26, 2022

peri irawan

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