Regardless of the type of maf the sensors work similarly.
Air flow sensor arduino ventilator.
Accurate air flow pressure monitoring.
It s the volume of air delivered to the lungs with each breath by the ventilator typically 500ml at rest.
Cars can have either an analog or digital mass air flow sensor.
For example the monitoring of pressure mass flow and volume flow over time allows us to observe changes in the patient s condition such as reduced lung capacity.
Both outputs are sent to the engine control module to regulate air fuel mixture and the automatic transmission system.
How to make an accurate air flow rate sensor with arduino for under 20 covid 19 ventilator.
I feel that you need to set program the arduino so that it monitors air intake flow pressure.
A diy ventilator may not be efficient as that of a medical grade ventilator but it can act as a good substitute if it has control over the following key parameters.
Although you are setting the motor speed based on a certain air flow this does not really mimic the overall function of how humans animals naturally breathe.
The design is for an orifice type flow sensor the orifice in our case a washer provides a restriction and.
Figure 1 shows the schematic construction of a ventilator with the typical air flow sensor positions.
The covid 19 pandemic has created a spike in demand for ventilators and consequently for the sensors that go into them.