Automated Driving Log-Aware Control Under Storage Limits
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Solution Overview
Problem
The limited capacity of in-vehicle storage devices in automated driving systems poses a risk of not being able to record necessary log data during automated driving control, as the storage capacity can become strained, potentially leading to data loss.
Innovation Solution
The automated driving system adjusts control parameters, such as reducing acceleration limits, maximum vehicle speed, or increasing inter-vehicle distance, when the storage device's free capacity falls below a threshold, to restrict vehicle travel and thereby reduce the amount of log data generated, thus preventing storage capacity strain.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If log data is continuously stored in the in-vehicle storage device during automated driving control, then the assessment capability of automated driving control is improved, but the storage capacity becomes strained and may lead to data loss
Solution Approach 1:
The system selectively stores only necessary log data based on driving situations and risk levels, rather than storing all generated log data. When storage capacity is sufficient, normal logging continues; when capacity is strained, the system prioritizes storing data from high-risk situations while reducing or stopping storage of routine driving data, thus preserving critical assessment capability within limited storage constraints
Solution Approach 2:
The system dynamically adjusts the logging parameter (storage frequency/selectivity) based on storage capacity status and driving risk level. When storage capacity is sufficient, logging proceeds at normal rate; when capacity becomes strained, the system changes the logging parameter to reduce storage volume while maintaining ability to assess critical driving events
2Productivity
If the vehicle travels at normal speed with full automated driving control, then productivity is maintained, but log data generation increases and strains storage capacity
Solution Approach 1:
The system applies partial automated driving control adjusted according to storage capacity status. When storage is sufficient, full automated driving functionality is provided. When storage is strained, the system reduces automated driving intervention level or restricts certain functions, thereby reducing log data generation while maintaining essential traveling capability
Data Source
AI summary
An automated driving system comprises one or more processors configured to perform automated driving control of a vehicle in accordance with a control parameter and one or more storage devices. The automated driving system stores log data related to the automated driving control in the one or more storage devices while performing the automated driving control. When a free capacity of the one or more storage devices is less than a threshold value, the automated driving system adjusts the control parameter to restrict traveling of the vehicle.