Design the motor acceleration for the desired frequency air volume inspiration of asynchronous mechanical ventilator based on a pressure sensor

Abstract

The SARS-CoV-2, a virus that attacks the respiratory system, has some difficulty breathing and chest pain. A mechanical ventilator is a simple version of a ventilator and most used to support patient breathing because it iseasy to use. This research design a mechanical ventilator operate based on the frequency and air volume of inspiration. The operator can set the ventilator using a potentiometer and choose the menu on an LCD. A couple of press wall push a bag valve mask in the desired frequency. The motor speed has a vital role to perform the number pushing based on the desired setting. The amount of airflow out from this bag depends on the duration and the depth of pushing. Some standard frequencies of human breathing were investigated in the range of 12 to 20 times of inspiration in a minute. The acceleration of the ventilator based on calculation was implemented to the machine, and it reduced the number frequency to 64% of the desired frequency. An error compensator is used to improve the accuracy of the ventilator. It compensates by multiply calculated acceleration by 2.31. It is successful in improving the performance and resulted in the ventilator work in the desired frequency and volume.