Open AccessMixed Pressure Control Innovation of Oxygen and Air Pressure in Ventilator with Safety Valve
Author(s) -
Hanifah Rahmi Fajrin,
Silmi Khasna Afifah,
Susilo Ari Wibowo
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1933/1/012106
Subject(s) - safety valve , relay , pressure control , microcontroller , control valves , pressure sensor , automotive engineering , pressure measurement , materials science , computer science , simulation , mechanical engineering , engineering , computer hardware , physics , power (physics) , quantum mechanics
The medical gas in the ventilator is very influential in maintaining patient survival so that the gas must be sterile, have high purity and have a stable pressure, with a value of no more than 5 bars. To maintain the stability of this pressure, a control device for oxygen and air pressure on the ventilator is designed with a safety valve. Pressure control on this ventilator mixing tube uses an ATMega328P microcontroller to drive the Pneumatic Valve as a safety device. Furthermore, the pressure will be read by the MPX 5700 AP sensor. After that, the results of a pressure reading of 1 to 5 bars are displayed on the seven-segment display. The comparison of the pressure difference between the pressure read by the sensor and displayed on the manometer resulted in the highest error of 4% and the lowest error of 2.37%. Whereas in the relay contact test, the safety valve worked well, and the error value was 3.29%. The difference in error values is considered completely safe to use.