Fault Operation Control for Heterogeneous In-Vehicle Devices
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Solution Overview
Problem
In-vehicle systems with multi-device configurations, particularly heterogeneous setups, face challenges in maintaining sustainability when faults occur, as existing fail operation mechanisms are designed for homogeneous configurations with backup devices, leading to inadequate fault handling.
Innovation Solution
A fault operation control system and method that includes monitoring resource states across multiple devices, calculating difference information when a fault occurs, and executing countermeasures to optimize task allocation and ensure fail-safe or fail-soft operations by leveraging heterogeneous devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a homogeneous multi-device configuration with backup devices is used, then fault handling capability is improved, but adaptability to heterogeneous configurations deteriorates
Solution Approach 1:
The patent creates a universal fault handling mechanism that works across both homogeneous and heterogeneous multi-device configurations. The resource information comparison approach and countermeasure selection framework are designed to be configuration-agnostic, allowing the same system to handle faults whether devices are identical or different types, thus achieving multi-functionality across configuration scenarios.
Solution Approach 2:
The patent changes the parameter of device configuration from homogeneous to heterogeneous while maintaining fault handling capability. By introducing resource information comparison and dynamic countermeasure selection based on actual device characteristics, the system adapts to parameter changes in device heterogeneity without losing reliability.
2Measurement precision
If resource monitoring and comparison mechanisms are implemented, then fault response accuracy is improved, but device complexity increases
Solution Approach 1:
Each device in the multi-device system independently monitors its own resource states and stores resource information locally. This self-service approach eliminates the need for a centralized monitoring system, reducing overall system complexity while maintaining accurate fault detection capability through local resource state tracking.
Solution Approach 2:
The system pre-stores resource information for each device before faults occur. When a fault happens, the pre-stored information is immediately available for comparison and countermeasure selection, eliminating the need for complex real-time analysis and reducing response time without requiring complex monitoring infrastructure.
3Reliability
If dynamic task reallocation is performed upon fault detection, then system sustainability is improved, but processing time increases
Solution Approach 1:
The system pre-calculates and stores resource information for all devices before faults occur. When a fault is detected, the fault determination unit can immediately compare resource states and select appropriate countermeasures using pre-stored data, avoiding time-consuming real-time analysis and enabling rapid task reallocation.
Solution Approach 2:
The system continuously monitors resource states and provides feedback to the fault determination unit. This feedback mechanism enables the system to detect faults promptly and trigger reallocation only when necessary, balancing system sustainability with minimal processing time loss by avoiding unnecessary reallocation operations.
Data Source
AI summary
A device state monitoring unit monitors a state related to use of a resource of a first device and stores monitoring information during a normal operation. A device state monitoring unit monitors a state of a second device and stores monitoring information. A comparison unit calculates difference information by comparing hardware resource information of the second device used by a task that is executed by the second device before occurrence of a fault with resource information of the first device based on the stored monitoring information, when it is detected that the fault occurs in the second device. A processing determination unit determines and executes a countermeasure method for a fault operation according to the calculated difference information.