Selective Fault Recovery for Electronic Subsystems
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electronic devices often undergo full system shutdown when a fault occurs in one of their subsystems, causing significant interruptions to users and lacking effective recovery options.
Innovation Solution
Implementing selective fault recovery techniques that allow the device to continue operating by attempting to recover the faulty subsystem using various recovery methods, including state and power resets, while providing users with options to isolate or reset the faulty component, thereby minimizing disruptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a full system shutdown is performed when a fault occurs in a subsystem, then system stability is maintained, but device availability and user productivity deteriorate
Solution Approach 1:
The system is segmented into independent subsystems with individual fault detection and recovery mechanisms. Each subsystem can be isolated and recovered independently without affecting the entire device, allowing selective fault recovery that maintains overall system availability while ensuring stability through targeted intervention.
Solution Approach 2:
A fault recovery manager acts as an intermediary between subsystem faults and system-wide responses. This mediator evaluates fault severity, determines appropriate recovery actions, and coordinates subsystem isolation or reset operations, preventing unnecessary full system shutdowns while maintaining system stability when required.
2Reliability
If multiple recovery methods are implemented for faulty subsystems, then fault recovery capability is improved, but device complexity increases
Solution Approach 1:
The recovery mechanism employs dynamic, adaptive fault recovery methods that adjust based on fault type and severity. The system implements a hierarchy of recovery strategies (subsystem reset, subsystem isolation, system reset) that are selectively applied, providing robust recovery capability while managing complexity through conditional logic rather than always-active mechanisms.
Solution Approach 2:
The system changes operational parameters of the faulty subsystem (power state, operational mode) as part of the recovery process. By modifying subsystem parameters rather than hardware configuration, the system achieves effective fault recovery without adding physical complexity to the device architecture.
Data Source
AI summary
Various embodiments are described herein with regards to performing a selective fault recovery for an electronic device having a plurality of subsystems in which one of the subsystems has a fault. The selective fault recovery techniques described herein allow a user to use non-faulty subsystem of the electronic device while selective fault recovery is being conducted on the subsystem having the fault.