Crew Oxygen System Performance Detection via Temperature Compensation
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Solution Overview
Problem
Conventional methods for detecting the performance of aircraft crew oxygen systems are inadequate in detecting slight leaks, leading to delayed or post-processing troubleshooting, which can compromise flight safety and increase operational costs.
Innovation Solution
A method and system that utilize pressure sensors, temperature calculations, and data processing to generate and transmit crew oxygen messages, allowing for real-time determination of oxygen pressure under standard conditions and assessment of system performance, enabling timely maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional methods (artificial recording or threshold-based alarm) are used to detect crew oxygen system performance, then the system complexity is low and ease of operation is maintained, but the measurement precision is insufficient and cannot detect slight leaks
Solution Approach 1:
The patent replaces manual pressure recording with an automated electronic detection system that uses pressure sensors, temperature sensors, and a processor to automatically monitor and analyze oxygen system performance. This substitution enables precise detection of slight leaks through continuous data collection and analysis, while eliminating the need for artificial intervention.
Solution Approach 2:
The patent introduces a ground-based server as an intermediary that receives pressure and temperature data from the aircraft, performs standardized calculations to determine oxygen pressure under standard conditions, and compares results against historical data. This intermediary processing layer enables sophisticated leak detection without adding complexity to the aircraft's own systems.
2Loss of time
If threshold-based alarm systems are used, then the ease of operation is maintained, but the loss of time occurs because troubleshooting is always post-processing and cannot eliminate problems in time
Solution Approach 1:
The patent performs preliminary analysis of oxygen system performance by continuously monitoring pressure and temperature data, calculating standardized pressure values, and comparing them against historical trends before actual leakage problems occur. This enables proactive identification of performance degradation and scheduled maintenance planning, preventing in-flight failures.
Solution Approach 2:
The patent establishes a feedback loop where pressure and temperature data are continuously collected, analyzed, and used to generate maintenance recommendations. The system provides feedback on system health status to airline operations, enabling timely intervention and maintenance scheduling based on actual performance trends rather than fixed schedules.
3Productivity
If manual pressure recording and threshold-based replacement methods are used, then the device complexity is low, but the productivity is reduced due to time-consuming troubleshooting processes that can cause airline delays even grounding
Solution Approach 1:
The patent enables the oxygen system to self-monitor and self-report its performance status through automated pressure and temperature sensing, data transmission to ground servers, and algorithmic analysis. This self-service capability eliminates the need for manual checking and accelerates maintenance decision-making, improving overall system productivity.
Solution Approach 2:
The patent transforms raw pressure and temperature measurements into standardized performance parameters by calculating oxygen pressure under standard conditions using temperature compensation formulas. This parameter transformation enables meaningful comparison across different environmental conditions and facilitates trend analysis for predictive maintenance.
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
This approach allows for early detection of performance degradation and leakage, reducing the risk of flight safety issues, minimizing unscheduled maintenance, and lowering operational costs by enabling proactive maintenance.
Implementation Method 1
obtain an oxygen pressure in an oxygen cylinder of the crew oxygen system
Implementation Method 2
determine an oxygen pressure in the oxygen cylinder under standard temperature
Data Source
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AI summary
The disclosure relates to a method and a system for detecting the performance of a crew oxygen system (100). The method comprising: obtaining an oxygen pressure of an oxygen cylinder (101) of the crew oxygen system, an ambient air temperature (Tat) and a cockpit temperature (Tc); generating crew oxygen messages from obtained oxygen cylinder of the crew oxygen system, the ambient air temperature and the cockpit temperature; receiving the crew oxygen messages, and determining an oxygen pressure (sensor 230, 300) of the oxygen cylinder under standard temperature; and determining performance of the crew oxygen system.