An aircraft emergency oxygen supply system comprises a passenger oxygen mask for supplying oxygen to a passenger wearing the passenger oxygen mask; an oxygen source for supplying oxygen to the passenger oxygen mask; a breath sensor for detecting breaths of the passenger wearing the passenger oxygen mask; and a controller for controlling the supply of oxygen from the oxygen source to the passenger oxygen mask. The controller is configured for operating in a normal breathing mode, which includes supplying a normal breathing amount of oxygen (VN) from the oxygen source to the passenger oxygen mask at every breath of the passenger wearing the passenger oxygen mask; deriving a breathing frequency indicator from a plurality of successive breaths of the passenger; and switching into a fast or into a low breathing mode if the breathing frequency indicator indicates a breathing frequency above or below predefined frequency thresholds.
AIRCRAFT EMERGENCY OXYGEN SUPPLY SYSTEM, AIRCRAFT COMPRISING SUCH AN EMERGENCY OXYGEN SUPPLY SYSTEM, AND METHOD OF OPERATING AN AIRCRAFT EMERGENCY OXYGEN SUPPLY SYSTEM
2024-02-29
Patent
Electronic Resource
English
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