A BLOOD OXYGEN SENSING ARDUINO-BASED VENTILATOR DEVICE FOR THE COVID PANDEMIC

Abstract

The human lungs use the back pressure created by the contracting motion of the diaphragm to
draw in air for breathing. A ventilator uses a reverse motion to inflate the lungs through a pumping motion.
The ventilation mechanism should allow him to take a range of 10 to 30 breaths per minute, with 2 sets of
increasing increments. The ventilator must also be able to adjust the amount of air pumped into the lungs
with each breath. The final, but so far least, is the setting for adjusting the duration of inhalation to
exhalation ratio. Apart from that, the ventilator must be able to monitor the patient's blood oxygen level and
expiratory lung pressure to simultaneously avoid over/under pressure. The ventilator we are designing and
developing here with Arduino incorporates all of these requirements, allowing him to create a reliable and
affordable home-made ventilator that will come in handy during the pandemic. Here we use a silicon
resuscitator driven by a servo motor with two side-push mechanisms to push the resuscitator. Use the toggle
switch and Bluetooth module to toggle and the variable pots to set the patient's breath length and their BPM.
Our system uses a blood oxygen sensor and a highly sensitive pressure sensor to monitor and display the
patient's vital signs on a LCD screen. It also has a built-in emergency buzzer alarm that sounds an alarm as
soon as an abnormality is detected. The entire system is controlled by an Arduino controller to achieve
desired results and support patients during the COVID pandemic and other emergencies.