Dual-Sensor Fluid Leak Detection for Real-Time Aircraft Monitoring
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Solution Overview
Problem
Existing fluid leakage in pumps, particularly in aircraft devices, is monitored through time-consuming periodic visual inspection, increasing aircraft downtime.
Innovation Solution
A fluid detection system with a detection sensor and a reference sensor, both subject to common ambient conditions, detects fluid leakage by measuring changes in electrical characteristics, such as capacitance, and outputs real-time alerts through integrated circuitry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If periodic visual inspection is used to monitor fluid leakage, then the system structure remains simple, but the inspection process is time-consuming and increases aircraft downtime
Solution Approach 1:
The patent replaces manual visual inspection with an automated electrical sensing system. The detection sensor uses electrical characteristics (such as capacitance changes) to automatically detect fluid leakage, eliminating the need for periodic manual inspection and reducing aircraft downtime while providing continuous monitoring capability
Solution Approach 2:
The detection sensor continuously monitors for fluid leakage autonomously without requiring human intervention. The sensor automatically detects changes in electrical characteristics caused by fluid presence and triggers warnings, enabling the system to self-monitor and alert operators to leakage conditions
2Reliability
If a detection sensor is placed in the fluid flow path, then fluid leakage can be detected in real-time, but the sensor is exposed to harsh fluid environment and potential damage
Solution Approach 1:
The patent uses the electrical characteristics of the sensor itself as an intermediary to detect fluid presence. Instead of placing a mechanical sensor that could be damaged by fluid, the system uses changes in electrical properties (capacitance, conductance) of the sensor material when fluid is present, providing indirect detection that protects the sensor from direct fluid damage while maintaining detection reliability
Solution Approach 2:
The detection method relies on changes in electrical parameters (such as capacitance or conductance) of the sensor material when fluid comes into contact with it. This parameter-based detection approach allows the sensor to remain in the fluid path without being mechanically damaged, as the fluid interaction only needs to change the electrical properties rather than physically contact vulnerable mechanical components
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
Enables continuous monitoring and real-time detection of fluid leakage, reducing downtime by providing proactive maintenance alerts.
Implementation Method 1
the detection sensor exhibits an electrical characteristic that is different from an electrical characteristic of the reference sensor when fluid contacts the detection sensor
Data Source
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AI summary
A fluid detection system includes a fluid detection sensor disposed at a fluid sensing portion of the system, and a reference sensor disposed at a reference sensing portion of the system. The detection sensor and the reference sensor are subject to at least one common ambient environmental condition, such that the detection sensor exhibits an electrical characteristic that is different from an electrical characteristic of the reference sensor when fluid contacts the detection sensor. The fluid sensing portion may be within an internal fluid passage of a conduit that is removably couplable to a fluid device. Alternatively or additionally, the fluid sensing portion may be disposed in a fluid flow path, such as a leak path, in a permanent structure of a fluid device. The reference sensor may be disposed in a location away from and/or intentionally divided from the fluid flow path. The system may include a warning system.