|
KMID : 1137820210420040193
|
|
의공학회지
2021 Volume.42 No. 4 p.193 ~ p.200
|
|
|
Development and Evaluation of a Teensy Microcontroller-based O2 Mass Flow Controller
|
|
Yu Min-Sang
Jang Yeon-Sook
Kim Mu-Hwan
Cho Sung-Bo
|
|
|
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.
|
|
|
KEYWORD
|
|
|
COVID-19, Mass flow controller, Respirator, Oxygen, Microcontroller
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
 
|