Smart Aircraft Oxygen Regulator with Sensor Feedback
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Solution Overview
Problem
Aircraft oxygen systems face inefficiencies in oxygen flow regulation, particularly at varying altitudes, as existing pressure regulators either provide continuous oxygen flow regardless of user demand or fail to adjust flow rates effectively with changes in altitude and temperature.
Innovation Solution
A smart pressure regulator system featuring a valve module, controller, and sensors that adjust gas flow based on feedback from pressure and temperature sensors, using an electric motor-driven valve poppet to maintain a steady oxygen flow rate and duration, ensuring adequate oxygen supply while minimizing waste by matching flow to demand and compensating for altitude changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous oxygen flow is provided to masks, then oxygen supply reliability is improved, but oxygen waste increases and system efficiency deteriorates
Solution Approach 1:
The regulator uses periodic valve opening/closing cycles controlled by a microprocessor to deliver oxygen in demand-based pulses rather than continuous flow, matching user respiratory patterns while minimizing waste
Solution Approach 2:
The system incorporates pressure sensors and temperature sensors that provide feedback to the microprocessor controller, enabling real-time adjustment of valve operation to maintain reliable oxygen supply while optimizing flow rates based on actual conditions
2Device complexity
If pressure regulator provides fixed flow rate, then system simplicity is maintained, but adaptability to altitude changes deteriorates
Solution Approach 1:
The regulator transitions from fixed flow to dynamic flow control using a microprocessor that continuously adjusts valve timing and duration based on altitude, temperature, and pressure sensor inputs to adapt to changing environmental conditions
Solution Approach 2:
The system changes operational parameters (valve open time, flow rate, pressure thresholds) based on sensor feedback and pre-stored profiles corresponding to different altitude and temperature conditions, enabling automatic adaptation without mechanical complexity
3Quantity of substance
If valve opens fully to increase oxygen flow, then oxygen supply adequacy is improved, but pressure control precision deteriorates
Solution Approach 1:
The regulator uses partial valve opening with precisely controlled duration rather than full opening, delivering adequate oxygen quantity through optimized timing and flow rate management while maintaining pressure control precision
Solution Approach 2:
The system replaces purely mechanical pressure regulation with electronically controlled valve timing and duration management, using a microprocessor to precisely control oxygen delivery while maintaining adequate flow quantities
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system ensures a consistent and efficient oxygen supply to aircraft passengers by dynamically adjusting oxygen flow rates in response to altitude and temperature changes, optimizing oxygen delivery and reducing waste, thereby enhancing passenger safety and extending oxygen system longevity.
Implementation Method 1
receive feedback of sensed data at the outlet of the valve module about at least outlet pressure and ambient temperature from at least the pressure sensor and the temperature sensor
Implementation Method 2
receive feedback of sensed data at the outlet of the valve module about at least outlet pressure and ambient temperature from at least the pressure sensor and the temperature sensor
Implementation Method 3
a valve poppet connected to an electric motor configured to control an amount of a flow rate and duration of time of a flow rate of gas from the valve module
Implementation Method 4
The valve poppet is spring loaded and configured with the O-ring seal
Implementation Method 5
The valve module comprises an O-ring seal configured on a shaft of the electric motor to achieve a pressure balance by reducing the valve actuation force
Data Source
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AI summary
A pressure regulator system is disclosed. The system includes: a valve module; a controller (435); and a plurality of sensors. The controller (435) is operably coupled to the valve module to adjust outflow of gas from an outlet of the valve module to a plurality of masks in an interior of an aircraft. The plurality of sensors comprises at least one of a pressure sensor (440) and a temperature sensor (425) and the controller (435) is configured to receive feedback of sensed data at the outlet of the valve module about at least outlet pressure and ambient temperature from at least the pressure sensor (440) and the temperature sensor (425) and adjust the outflow of gas from the outlet of the valve module by determining an open-valve time based on the feedback of sensed data received from each sensor.