Wiring Safety Analysis System for Aircraft Redundancy Verification
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Solution Overview
Problem
In complex wiring systems, especially in aircraft, it is difficult to confirm the safety of wiring due to the large number of wires and terminal devices, and existing methods struggle to analytically evaluate failure rates and redundancy effectively.
Innovation Solution
A safety analysis system that correlates electric wires with connectors and functions, performing qualitative evaluations by matching electric wire-terminal connector correlation information with terminal connector-function correlation information to determine if critical functions are maintained, and also evaluates separation requirements to ensure redundancy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large-scale wiring system is employed to ensure safety through redundancy, then the safety margin is improved, but the complexity of confirming wiring safety worsens due to the large number of wires and terminal devices
Solution Approach 1:
The patent segments the complex wiring safety verification process into distinct evaluation stages: (1) correlation establishment between wires, connectors, and functions; (2) arc fault risk assessment for each wire; (3) redundancy verification by checking if critical functions remain operational after potential failures. This segmentation transforms an overwhelming comprehensive check into manageable sequential steps, enabling safety verification in large-scale systems.
Solution Approach 2:
The patent introduces an intermediary evaluation system that acts as a mediator between the physical wiring structure and safety assessment. This system uses correlation information databases and automated evaluation algorithms to bridge the gap between complex physical wiring configurations and safety requirements, automatically verifying whether redundancy and separation requirements are met without manual inspection of each wire.
2Measurement precision
If quantitative safety analysis using failure rates is performed, then the safety evaluation becomes more precise, but it becomes difficult to analytically obtain failure rates due to the probability of arc phenomena
Solution Approach 1:
The patent replaces complex quantitative failure rate calculations with a qualitative evaluation approach that uses simplified assessment criteria. Instead of attempting to precisely calculate difficult-to-obtain failure rates involving arc phenomena, the system uses evaluation rules based on wire separation distances, connector correlations, and functional redundancy checks - essentially using simpler, more accessible assessment methods that achieve sufficient safety verification without requiring complex quantitative analysis.
3Device complexity
If manual evaluation of wiring safety is performed, then the evaluation can be performed without complex automated systems, but the evaluation process becomes time-consuming and less accurate
Solution Approach 1:
The patent implements preliminary action by pre-establishing correlation information databases that store relationships between wires, connectors, and functions before safety evaluation begins. These pre-computed correlation data structures enable rapid automated querying during evaluation, allowing the system to quickly determine whether wires are properly separated, whether redundant paths exist, and whether critical functions are protected - dramatically speeding up the evaluation process compared to manual methods.
Data Source
AI summary
A safety analysis system for wiring, including: a storage unit that stores electric wire-terminal connector correlation information in which each of a plurality of electric wires and a pair of connectors are correlated with each other, terminal connector-function correlation information in which the pair of connectors located at terminals and a function of a device to which the connectors are connected are correlated with each other, and function determination information including a combination of a plurality of functions that are not allowed to be lost at the same time; and a processing unit that matches the electric wire-terminal connector correlation information and the terminal connector-function correlation information when the wire harness is identified, and generates electric wire-function correlation information in which each of the plurality of electric wires and the function of the device are correlated with each other.