Live Demonstration: Phase Tracking Based Ultrasonic Tidal Breathing Monitor
2020
This work presents a live demonstration of monitoring respiratory parameters during normal, restful tidal breathing. The system is based on detection of the phase difference of ultrasonic waves due to the perturbations caused by the respiratory air flow. The user is required to put the uniquely designed blow pipe in the mouth and breath normally through it. The phase detector circuitry tracks the phase change and thus yields the respiratory flow rate. Eventually various parameters are computed from the acquired breathing pattern, which can lead to respiratory system assessment.
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