College - Author 1

College of Engineering

Department - Author 1

Biomedical Engineering Department

Degree Name - Author 1

BS in Biomedical Engineering

College - Author 2

College of Engineering

Department - Author 2

Biomedical Engineering Department

Degree - Author 2

BS in Biomedical Engineering



Primary Advisor

Michael Whitt, College of Engineering, Biomedical Engineering Department


The Auto-Adjustable Oxygen Flowmeter device is to be used in conjunction with an oxygen source or reservoir, as well as a low-flow nasal cannula apparatus. The device is applicable for patients requiring an oxygen flow rate of 0-6 L/min. Further, the device works to maintain a healthy blood-oxygen concentration of 90-94% for typical patients, as well as an 88-92% range for COPD patients who are chronic CO2 retainers. A reflective pulse oximeter will record the SpO2 concentration of the patient. The outputted SpO2 concentration will be transmitted to an internal processing PCB from which it will interact with the oxygen valve, causing it to contract or expand based on the patient’s need or surplus of oxygen. The patient’s target SpO2 range will be inputted using a screen interface. This screen interface will also output the patient’s SpO2 value, current oxygen flow rate through the system, and plethysmography graph. If the device loses power, the flow will be redirected through a manual valve that can be hand-adjusted by the patient or care team on site.