Autonomous Driving Switching Threshold for Environmental Suitability
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Solution Overview
Problem
Autonomous driving systems may switch from manual to autonomous driving even when the driving operation is not suitable for the actual traveling environment, leading to potential safety issues and inefficiencies.
Innovation Solution
An autonomous driving device that includes a manual driving operation amount detection portion, an autonomous driving operation amount calculation portion, and a driving state switching portion, which assesses the difference between manual and autonomous driving operation amounts and only switches to autonomous driving if the difference is within a predetermined threshold, ensuring the operation is suitable for the environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the driving state is switched from manual driving to autonomous driving based solely on sensor-recognized traveling environment, then the autonomous driving system can operate with high automation, but the reliability deteriorates because the autonomous driving operation may not be suitable for the actual traveling environment
Solution Approach 1:
The system compares the autonomous driving operation amount with the manual driving operation amount detected during manual driving. This feedback mechanism detects discrepancies between sensor-recognized environment and actual environment, preventing autonomous driving activation when the difference exceeds a threshold, thus improving reliability while maintaining automation
Solution Approach 2:
The system performs preliminary comparison of operation amounts before switching to autonomous driving. By evaluating whether the autonomous driving operation amount differs within the threshold from manual driving operation amount in advance, the system prevents unsuitable autonomous operations, ensuring reliability before full automation engagement
Data Source
AI summary
If the difference of the manual driving operation amount, detected by a manual driving operation amount detection portion, from the autonomous driving operation amount, calculated by an autonomous driving operation amount calculation portion, is equal to or smaller than an operation amount threshold during manual driving, a driving state switching portion switches the driving state from manual driving to autonomous driving in response to an autonomous driving switching request from a host vehicle's driver. This configuration prevents the switching from manual driving to autonomous driving if the driver's manual driving operation differs much from the autonomous driving operation with a high possibility that the autonomous driving operation suitable for the actual traveling environment will not be performed. Therefore, this configuration prevents the switching from manual driving to autonomous driving if the possibility is high that the autonomous driving operation suitable for the actual traveling environment will not be performed.