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Oxygen Level Monitoring in an Oxygen Cylinder
Abstract
This paper aims at designing an oxygen level monitoring technique in an oxygen
cylinder. The amount of oxygen present inside the oxygen cylinder is very vital information
when such cylinder is in use for supply of oxygen to a critical patient. The amount of oxygen
present inside the cylinder is measured by the pressure at the outlet nozzle. The pressure is
measured using a high precision MEMS Pressure Sensor. The output of the MEMS pressure
sensor is voltage of the order milli. An ampliier is used to amplify this milli volt signal. A
microcontroller is used in cascade to process the signal and display the pressure of oxygen
cylinder. Also a buzzer is given which cautions the attendants of patient whenever the level
of oxygen is below a pre-decided value. The signal is further transmitted to the monitoring
station through wireless communication module. Graphical display is used at monitoring
station to indicate the pressure in the oxygen cylinders to initiate actions like replacement of
empty cylinders with illed ones. Experimental results show that. The aims set for this paper
are achieved satisfactorily.