Steering Wheel Grip Judgment for Scene-Adaptive Driver Handover
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Solution Overview
Problem
In automated driving scenarios, requiring drivers to grip the steering wheel with both hands can detract from convenience while compromising safety, as single-hand gripping may be sufficient in certain conditions.
Innovation Solution
A control device and method that assesses the steering wheel grip status using input information from the driver, adjusting the grip completion judgment based on the driving scene, allowing for one-handed or two-handed grip requirements as necessary, to balance safety and convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the system requires two-handed grip completion judgment for all driving scenes, then safety is improved, but convenience deteriorates due to unnecessary both-hand gripping requests
Solution Approach 1:
The patent applies dynamics by making the grip completion judgment criteria changeable according to driving scenes. The control device dynamically adjusts whether one-handed or two-handed grip is required based on the current driving situation, allowing the system to adapt between safety-critical scenes requiring both hands and routine scenes accepting one hand, thus resolving the contradiction between safety and convenience
Solution Approach 2:
The patent changes the parameter of grip completion status judgment based on driving scene characteristics. By modifying the judgment criterion parameter (one-handed vs. two-handed grip requirement) according to different driving conditions, the system achieves both safety in critical situations and convenience in routine situations, eliminating unnecessary both-hand gripping requests
2Ease of operation
If the system allows one-handed grip completion in all driving scenes, then convenience is improved, but safety deteriorates in scenes requiring both hands
Solution Approach 1:
The system dynamically adjusts the grip completion judgment based on driving scene characteristics. When safety requires both hands, the judgment criterion changes to require two-handed grip; when convenience is acceptable, it allows one-handed grip. This dynamic adaptation prevents safety deterioration while maintaining convenience
3Reliability
If the system continuously monitors and adjusts grip completion status based on driving scenes, then the balance between safety and convenience is improved, but device complexity increases
Solution Approach 1:
The patent implements feedback by continuously monitoring driving scene information and using it to adjust the grip completion judgment criterion. The control device receives feedback about the current driving situation and automatically modifies the grip requirement accordingly, achieving safety-convenience balance through automated feedback-driven adjustment rather than complex manual control
Data Source
AI summary
A control device for a vehicle is configured to request that a driver grip a steering wheel at the time of a predetermined driving scene, judge whether a steering wheel grip status is a one-handed grip status or a two-handed grip status, and judge based on the steering wheel grip status whether the status is a grip completion status where the steering wheel has finished being gripped. The control device is further configured to change whether to judge the status is a grip completion status if at least a one-handed grip status or to judge whether the status is a grip completion status only if a two-handed grip status in accordance with the driving scene.