Journal of Biomedical Engineering Research (대한의용생체공학회:의공학회지)

The Korean Society of Medical and Biological Engineering (대한의용생체공학회)
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Development and Evaluation of a Teensy Microcontroller-based O2 Mass Flow Controller

Teensy 마이크로 컨트롤러 기반 산소 유량 제어기 개발 및 성능평가

  • Received : 2021.06.29
  • Accepted : 2021.08.24
  • Published : 2021.08.31
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Abstract

Flowmeter and oxygen sensors are listed in COVID-19 essential medical devices. This article reports a Teensy microcontroller-based Oxygen mass flow controller (MFC), core part of the oxygen respirator or extracorporeal membrane oxygenation (ECMO). The developed MFC consisting of the microcontroller, MEMS flow sensor, and solenoid valve was able to accurately control 0 to 100 sccm of oxygen flow rate. The pressure of vacuum chamber increased proportionally to the flow rate (0.998 of Pearson correlation coefficient). The experimental results proved that the developed MFC exhibits comparable performance to a commercial MFC in accuracy, settling time, linearity with pressure, and repeatability of oxygen mass flow control. It is expected that this simple and cheap MFC is utilized for oxygen therapy against the severe acute respiratory syndrome coronavirus 2.

Keywords

Acknowledgement

본 연구는 경기도의 경기도 지역협력연구센터 사업의 일환으로 수행하였음[GRRC-가천2020(B01), AI기반 의료영상분석].

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