Pneumatic Valve Flow Analysis for Opening, Closing, and Stiction
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Solution Overview
Problem
Manual inspection of pneumatic valves in aircraft is time-consuming, error-prone, and costly due to the need for human operators to visually monitor valve operation and sensor data, making it difficult to accurately determine opening and closing points and stiction, which can lead to unsafe operational conditions.
Innovation Solution
A pressure controller system coupled with a computing device and display that automatically detects valve opening and closing points and stiction by receiving and analyzing flow and pressure data, providing graphical trends to identify potential failures and hazardous conditions, reducing the need for manual testing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual inspection methods are used to monitor valve operation, then human operators can visually assess valve performance, but the process becomes time-consuming and error-prone
Solution Approach 1:
The patent replaces manual visual inspection with an automated electronic system that uses sensors to detect valve position, pressure, and flow data. The system automatically processes this data to determine opening and closing points, eliminating the need for human operators to visually monitor the valve while improving accuracy and reducing inspection time.
Solution Approach 2:
The valve testing system performs self-assessment by automatically collecting sensor data, processing it through algorithms, and generating test results without requiring continuous human intervention. The system independently determines valve operation parameters and identifies potential issues, enabling autonomous inspection operations.
2Measurement precision
If automated pressure controller systems are implemented to detect valve operation data, then testing accuracy and reliability improve, but device complexity increases
Solution Approach 1:
The pressure controller system is designed to perform multiple functions: it controls pressure, collects sensor data, processes information, and generates test results. By integrating these functions into a single multi-functional device, the system achieves high measurement precision without proportionally increasing overall system complexity.
Solution Approach 2:
The system uses an intermediary processing layer that receives raw sensor data, applies algorithms to determine valve operation points, and outputs interpreted results. This intermediary layer simplifies the connection between complex sensors and the final display, managing complexity while maintaining precision.
3Loss of information
If visual monitoring by human operators is used, then operational assessment can be performed, but stiction and opening/closing points cannot be accurately determined
Solution Approach 1:
The system continuously monitors valve operation parameters and provides real-time feedback through graphical displays showing pressure, flow, and calculated operation points. This feedback mechanism ensures complete capture of valve behavior data while automatically performing the complex analysis that would be difficult for human operators to execute manually.
Data Source
AI summary
A method is provided. The method can be used to perform valve testing for pneumatic valves. The method can include receiving, by a pressure controller including a data processor, data cauterizing an air flow through a valve coupled to the pressure controller. The method can also include determining, by the data processor, valve operation data associated with the valve. The method can further include providing, by the data processor, the valve operation data in a display coupled to the pressure controller. The valve operation data can include an opening point of the valve, a closing point of the valve, or an indication of stiction of the valve. The valve operation data can also be determined based on a rate of pressure change through the valve. Related systems and computer readable mediums performing the method are also provided.