Optical Arc Fault Localization in Aircraft Power Components
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Solution Overview
Problem
Traditional arc fault detection systems in aircraft power distribution systems only provide broad indications of electrical faults, failing to accurately locate the fault along or within the component, leading to unnecessary inspections and maintenance in large and dense power systems.
Innovation Solution
A fault detection system utilizing an optical conductor with sensors at each end to detect electromagnetic radiation, and a controller module that determines the location of an arc fault based on the time delay between sensor detections, allowing for precise fault location within the electrical component.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional arc fault detection systems are used, then fault detection is provided, but fault location precision is poor leading to broad indications only
Solution Approach 1:
The system divides the detection task into multiple independent measurement channels by placing sensors at both ends of the optical conductor. Each sensor independently detects electromagnetic radiation from faults, and the controller segments the fault location determination by calculating time delay for each fault event separately, enabling precise localization rather than broad indication.
Solution Approach 2:
The patent introduces time delay measurement as an intermediary parameter to indirectly determine fault location. Instead of directly detecting fault position, the system measures the time delay between electromagnetic radiation arrival at two sensors, and uses this intermediate measurement to calculate precise fault location through the known propagation velocity of electromagnetic waves in the medium.
2Productivity
If traditional fault detection systems are used, then faults are detected, but component inspection scope is large requiring unnecessary inspections
Solution Approach 1:
The system performs preliminary fault location determination before maintenance activities begin. By continuously monitoring and precisely locating faults in real-time, the system prepares maintenance teams with exact fault positions in advance, eliminating the need for broad preliminary inspections and enabling direct targeted maintenance at the identified fault locations.
3Reliability
If traditional fault detection systems are used, then electrical faults are detected, but system complexity is high due to dense power systems
Solution Approach 1:
The patent replaces complex electrical measurement systems with optical detection. Instead of using complicated electrical sensors and signal processing equipment to detect faults in dense power systems, the system uses optical conductors and electromagnetic radiation detection, which simplifies the detection mechanism while maintaining high reliability in locating faults within complex power distribution networks.
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 enables precise location of arc faults in electrical components, reducing the number of components that need to be inspected and facilitating more targeted maintenance, thereby improving operational efficiency and reducing costs.
Implementation Method 1
a first sensor and a second sensor... each configured to detect electromagnetic (EM) radiation propagating within the optical conductor
Implementation Method 2
an optical conductor... configured to optically face the component... detect electromagnetic (EM) radiation propagating within the optical conductor
Data Source
AI summary
A fault detection system for detecting an electrical fault in a component includes an optical conductor with a first end and a second end, and configured to optically face the component. A first sensor and a second sensor can be operably coupled to the first end and the second end, respectively. The first sensor and the second sensor are each configured to detect electromagnetic radiation propagating through the optical conductor.