Vehicle Cluster Fail-Safe Redirection via Peripheral Displays
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Solution Overview
Problem
When an error occurs on the front LCD panel of a vehicle's cluster, essential information for safe driving cannot be outputted, compromising safe operation.
Innovation Solution
A cluster information output apparatus that determines the states and priorities of peripheral control devices and outputs essential information through a display or voice notification when an error is detected, using a control unit, storage unit, and speaker to redirect critical information to available peripheral devices via internal vehicle communication networks like CAN, LIN, FlexRay, or MOST.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the front LCD panel of the cluster is used to display essential driving information, then the driver can access vehicle status data, but the system becomes vulnerable to single-point failure when the display errors out
Solution Approach 1:
The patent makes multiple peripheral control devices (audio video navigation device, head-up display, instrument panel cluster) capable of displaying cluster information, not just their original functions. When the front LCD panel fails, the system can redirect information to any of these peripheral devices, transforming them into universal display outlets that maintain system reliability without adding complex dedicated backup systems.
Solution Approach 2:
The control unit acts as an intermediary that monitors the operational state of the cluster and automatically redirects information flow to alternative peripheral control devices when failure is detected. This mediator component manages the fail-safe switching logic, eliminating the need for complex manual intervention or redundant dedicated display systems.
2Reliability
If the cluster system implements fail-safe functionality by redirecting information to peripheral devices, then safe driving is maintained during display errors, but the system architecture becomes more complex
Solution Approach 1:
The control unit continuously monitors the operational state of the cluster and receives feedback about display functionality. Based on this feedback, it automatically determines whether to redirect information to peripheral control devices. This closed-loop feedback mechanism enables reliable fail-safe operation while keeping the control logic integrated within the existing control unit rather than requiring separate complex safety systems.
Solution Approach 2:
The cluster system performs its own health monitoring and self-redirects information to alternative displays without requiring external intervention. The control unit detects its own failures and autonomously manages the fail-safe switching to peripheral devices, eliminating the need for complex external backup systems or manual override mechanisms.
3Reliability
If multiple peripheral control devices are equipped with display functions for cluster information, then redundancy is improved, but the manufacturing cost and device complexity increase
Solution Approach 1:
Instead of creating dedicated backup display systems, the patent makes existing peripheral control devices (audio video navigation device, head-up display, instrument panel cluster) multi-functional by enabling them to display cluster information in addition to their primary functions. This approach achieves display redundancy without requiring separate manufacturing lines or additional dedicated components, maintaining ease of manufacture while improving reliability.
Data Source
AI summary
A cluster information output apparatus for a vehicle may include: a plurality of peripheral control devices having a function of displaying cluster information; a storage unit configured to store the cluster information and priorities for the plurality of peripheral control devices; and a control unit configured to determine operation states for the plurality of peripheral control devices when an error occurs in an operation state sensed from a cluster, and output the cluster information.