Vehicle Controller Error Handling for Battery Detector Faults
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Solution Overview
Problem
Conventional vehicle systems face challenges in maintaining autonomous driving control when errors occur in battery state of charge detectors, leading to potential power shortages and system failures.
Innovation Solution
A vehicle system comprising a generator, battery, detector, and controller, where the controller restricts vehicle equipment operation when errors are detected in the detector, ensuring stable power supply and preventing system failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the detector continues to operate without error detection, then the system complexity remains low, but the reliability of autonomous driving control deteriorates due to undetected detector errors
Solution Approach 1:
The controller performs preliminary error detection on the detector before autonomous driving control is executed. By checking whether the detector is operating normally in advance through multiple detection cycles and comparison operations, the system prepares for potential failures before they affect control reliability, thus improving reliability without significantly increasing operational complexity
Solution Approach 2:
The system implements feedback by continuously monitoring detector output signals and comparing them against expected ranges. When detector errors are detected through this feedback mechanism, the controller adjusts by restricting autonomous driving control or switching to alternative control modes, creating a closed-loop system that maintains reliability through continuous verification and adjustment
2Reliability
If the controller restricts operation of vehicle equipment when detector errors are detected, then the reliability of power supply management is improved, but the productivity of vehicle operation deteriorates
Solution Approach 1:
Instead of completely shutting down vehicle operations when detector errors occur, the controller applies partial restriction by limiting only the autonomous driving control function while allowing other vehicle systems to continue operating. This selective approach maintains power supply reliability for critical functions while preserving overall vehicle productivity through partial operation continuation
Solution Approach 2:
The controller changes operational parameters by switching from full autonomous driving control to restricted or manual control modes when detector errors are detected. This parameter change in control authority and system operation mode maintains reliable power management while adapting productivity levels to the degraded sensor condition, allowing vehicle operation to continue at reduced but still functional capacity
Data Source
AI summary
A vehicle system includes a generator, a battery, a detector, and a controller. The generator is configured to generate electrical power based on power transmitted from an engine of the vehicle. The battery is chargeable with the electrical power generated by the generator. The detector detects the state of charge of the battery. The controller is configured to perform autonomous driving control of the vehicle. The controller restricts operation of equipment of the vehicle when an error is detected in the detector, in comparison with when the detector is normal.