Dual-Processor Moving Body Control During Software Update Failures
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Solution Overview
Problem
The challenge is to prevent a moving body from becoming inoperable due to failures in updating software on multiple processors in a moving body control device, which can lead to synchronization issues and safety risks.
Innovation Solution
A moving body control device is designed with multiple processors and memories, a software update unit, an abnormality recognition unit, and an abnormality handling unit. This setup allows for the recognition and handling of software abnormalities during updates, enabling the device to switch to old software versions or restrict functionality to maintain operability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If software update processing is performed on multiple processors, then software functionality and performance are improved, but the risk of abnormality increases and the moving body may become inoperable
Solution Approach 1:
The patent performs software abnormality recognition after update processing is completed, before determining whether to switch to abnormality handling mode. This preliminary check allows the system to verify software integrity and detect abnormalities early, preventing inoperable states before they occur.
Solution Approach 2:
The patent prepares abnormality handling modes in advance that can be activated when software abnormalities are detected. These pre-prepared handling modes serve as a safety cushion, ensuring the moving body can maintain operability even when software update abnormalities occur.
2Adaptability or versatility
If software updates are performed to improve functionality, then system capabilities are enhanced, but synchronization between processors may be compromised
Solution Approach 1:
The patent implements a feedback mechanism where the software abnormality recognition unit continuously monitors software status after updates, and provides information to the abnormality handling unit. This feedback loop ensures that any synchronization issues between processors are detected and handled appropriately, maintaining system stability while allowing functional enhancements.
3Ease of operation
If software updates are performed without restrictions, then update flexibility is improved, but the risk of abnormality increases
Solution Approach 1:
The patent enables the moving body control device to autonomously perform software abnormality recognition and automatically switch to appropriate abnormality handling modes when abnormalities are detected. This self-service capability maintains update flexibility while ensuring software operability, as the system can independently manage update risks without requiring external intervention or restrictive procedures.
Data Source
AI summary
A moving body control device includes: a software update unit that performs update processing of first software or second software; a software abnormality recognition unit that recognizes presence or absence of an abnormality of first software and second software after the update processing is performed; and a software abnormality handling unit that causes either a first processor or a second processor to perform abnormality handling processing of operating a target moving body to be controlled by the moving body control device in a predetermined abnormality handling mode, in a case where the software abnormality recognition unit recognizes the abnormality of either the first software stored in a first memory or the second software stored in a second memory.