Multilayer System Fault Elimination via Combined Layer Redefinition
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Solution Overview
Problem
Existing multilayer system fault detection and elimination mechanisms fail when inspection units become unavailable, as they rely on functional inspection units to detect fault symptoms and determine the source of faults.
Innovation Solution
A fault-eliminating device and method that updates the list of layers and fault model by defining a combined layer with a target layer and unavailable inspection units, allowing fault detection and elimination to proceed even when some inspection units are unavailable, by reassigning fault dependencies and updating the fault model.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional fault detection mechanisms use inspection units for each layer to detect fault symptoms, then fault source can be accurately identified, but the system fails when inspection units become unavailable
Solution Approach 1:
The patent combines multiple layers into a single combined layer when inspection units are unavailable. The processor merges the unavailable layer with an available layer to form a combined layer, allowing fault detection to continue using the available inspection unit for the combined layer. This merging strategy ensures continuous fault detection capability even when some inspection units fail.
Solution Approach 2:
The available inspection unit is made multi-functional by having it monitor both its original layer and the combined layer. The inspection unit performs multiple functions: detecting faults in its primary layer and detecting faults in the combined layer (which includes the unavailable layer). This universality allows the system to maintain fault detection coverage despite inspection unit unavailability.
2Productivity
If the system combines unavailable layers with available layers into combined layers, then fault detection continues, but the fault dependency relationships become more complex
Solution Approach 1:
The patent segments the fault detection process into distinct phases: identifying unavailable inspection units, combining affected layers, and updating fault dependency relationships. By segmenting this complex task into manageable steps, the system can handle the complexity systematically without overwhelming the processor or losing track of original fault relationships.
Solution Approach 2:
The processor performs preliminary actions by pre-identifying which layers and inspection units are unavailable before attempting fault detection. This preliminary classification allows the system to proactively combine layers and update dependencies in advance, reducing the complexity burden during actual fault detection operations.
Data Source
AI summary
When the inspection unit corresponding to at least one disabled layer of a multilayer system is unavailable, a fault-eliminating device defines the at least one disabled layer and a target layer as a combined layer. The fault dependency of the target layer is the lowest among the fault dependency of the at least one available layer. The inspection unit of the at least one available layer is active and the fault dependency thereof is higher than the disabled layer. Then, the device makes the inspection unit and the fault symptom corresponding to the target layer correspond to the combined layer, so as to update a list of layers and a fault model. After that, the device determines a source of a fault from the layers according to the list of layers and the fault model, and performs a strategy of fault elimination corresponding to the source, to eliminate the fault.