Driver Posture Warning Control During Assisted Driving Handover
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle systems fail to quickly return occupants to a posture enabling manual driving execution when switching from a driving assist state to a non-assist state, as they do not effectively alert and guide the occupant to adjust movable members to optimal positions for manual operation.
Innovation Solution
A vehicle system with movable members, a driving assist system, and a processor that issues warnings and computes return times to guide occupants in adjusting seats, steering wheel, and other components to their reference positions, restricting movement away from these positions when the positional condition is met, ensuring a quick transition to manual driving.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If driving assist control is executed without position monitoring, then the driving assist system operates smoothly, but the occupant cannot quickly return to a posture enabling manual driving execution when switching to non-assist state
Solution Approach 1:
The system performs preliminary actions by monitoring the positions of movable members (seats, steering wheel, pedals) continuously during driving assist control execution. This advance monitoring ensures that when switching to non-assist state, the system can immediately detect if the occupant is in an optimal position for manual driving and provide warnings or automatic adjustments, enabling quick return to a suitable driving posture without requiring the occupant to manually adjust everything.
Solution Approach 2:
The system implements feedback by continuously comparing the actual positions of movable members against reference positions that are optimal for manual driving. When the occupant's position deviates from the reference position beyond a threshold, the system provides feedback through warnings to the occupant. This closed-loop feedback mechanism guides the occupant back to the correct position, ensuring quick and accurate return to a manual driving-ready posture.
2Reliability
If the system issues warnings to alert the occupant, then the occupant is more likely to return to reference position, but the system complexity increases due to alarm device control
Solution Approach 1:
The alarm device provides feedback to the occupant when their position deviates from the reference position. This feedback mechanism enhances reliability by ensuring the occupant is aware of their position and is prompted to return to the optimal manual driving posture. The warning system acts as a communication bridge between the monitoring system and the occupant, improving the reliability of the transition process.
Solution Approach 2:
The system enables self-service by allowing the occupant to self-correct their position based on the warnings received. Instead of requiring complex automatic adjustment mechanisms, the system provides information to the occupant who then autonomously adjusts their position. This approach improves reliability while minimizing system complexity by leveraging the occupant's own actions rather than requiring elaborate automated positioning systems.
3Measurement precision
If the system computes return time for all movable members, then the accuracy of position assessment is improved, but the computational load and processing time increase
Solution Approach 1:
The system segments the computation by handling different movable members (seats, steering wheel, pedals) independently rather than as a single complex calculation. Each movable member's position and return time are computed separately based on its own reference position and current state. This segmentation allows for more precise individual assessments while reducing overall computational complexity, as each segment can be processed efficiently and in parallel if needed.
Solution Approach 2:
The system applies partial action by focusing computational resources on the most critical movable members or those with the largest deviations from reference positions. Rather than continuously computing return times for all members with equal detail, the system can prioritize calculations for members that require immediate attention, providing sufficient precision for safety-critical components while reducing overall computational burden.
Data Source
AI summary
A vehicle including at least one movable member whose position is modifiable by an occupant, a driving assist system capable of executing driving assist control that is interruptible when an interrupt condition has been satisfied, and a processor. The processor is configured to control an alarm device so as to issue a warning to a driver when determined that a prescribed positional condition has been satisfied based on a reference position and a position of each of the movable members when the driving assist control is being executed.