Finite Field Labeling for Vehicle Control System Fault Detection
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Solution Overview
Problem
Modern vehicle control systems, comprising numerous interconnected subsystems and electronic control units, face challenges in efficiently detecting and locating faults, which increases production costs and reduces vehicle reliability.
Innovation Solution
Assigning unique finite field element labels to functional units, allowing for fault detection through a traversal value comparison and finite field element factorization algorithm, enabling rapid identification of faulty units and their associated hardware components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional fault detection methods are used in vehicle control systems, then the system can identify faults, but the complexity of interconnected subsystems makes rapid fault detection and location difficult
Solution Approach 1:
The patent segments the vehicle control system into functional units, each assigned a unique identifier (FIN). This segmentation allows the complex interconnected system to be broken down into manageable components that can be individually tracked and diagnosed, resolving the contradiction between system complexity and fault detection efficiency
Solution Approach 2:
The patent introduces a diagnostic management system as an intermediary that coordinates fault detection across all functional units. This intermediary manages the traversal values and coordinates the diagnostic process, simplifying the complexity of detecting faults in interconnected subsystems
2Adaptability or versatility
If numerous functional units are interconnected to increase vehicle features, then vehicle functionality improves, but fault detection and location become more challenging
Solution Approach 1:
The patent assigns local quality to each functional unit through unique identifiers (FIN) and traversal values specific to each unit. This allows the system to maintain high versatility while enabling precise local fault detection, as each functional unit has distinct diagnostic characteristics that make it identifiable even within the complex interconnected system
3Reliability
If traditional diagnostic systems are used, then faults can be detected, but production costs increase due to the need for extensive testing and validation
Solution Approach 1:
The patent implements preliminary action by embedding unique identifiers and traversal value mechanisms into functional units during the manufacturing process. This preliminary setup enables automated fault detection during production testing, reducing the need for extensive manual validation and lowering production costs while maintaining high reliability
Data Source
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AI summary
A method for detecting faults in a vehicle control system comprising functional units is provided. Each functional unit has an associated unique label in the form of a finite field element, the method comprising: calling each of the functional units, the call comprising a readable traversal value, and in case the functional unit is operating correctly, updating the traversal value based on the unique label of the currently called functional unit; and determining from the updated traversal value if any functional units are faulty by a comparison with an expected traversal value.