<；p>；A hospital bedside oxygen conservation system for conserving the oxygen usage is provided. A hospital bedside oxygen conservation system includes a microcontroller and a proportional flow valve. The microcontroller controls a flow valve to deliver an optimum quantity of oxygen to a user/patient when needed based on a respiratory signal of a user. The microcontroller further controls the proportional flow control valve based on the level of the saturated oxygen in blood of the user, sensing by the SPO2 sensor.<；/p>；
