Vehicle Driving Control System for Dynamic Driver State Monitoring
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Solution Overview
Problem
In automatic driving vehicles, when a driver's physical condition deteriorates, transitioning from automatic driving to manual driving can be delayed due to the need to reach a retreat point before canceling the retreat mode, causing inconvenience and safety risks if the driver's condition improves before reaching the point.
Innovation Solution
A vehicle driving control system that includes an override detector, driver monitor, driver state determining unit, retreat mode controller, and retreat mode canceler, which enables safe cancellation of the retreat mode and transition to manual driving when the driver's condition improves during retreat travel, allowing override operations to be enabled without waiting for the vehicle to reach a retreat point.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the system requires the vehicle to reach a retreat point before canceling the retreat mode, then the safety of automatic driving is improved, but the response time for manual driving takeover is delayed
Solution Approach 1:
The system dynamically adjusts the override operation status based on the current driving mode. During retreat mode, the override operation is initially disabled for safety, but can be enabled dynamically when the driver state determining unit confirms the driver has returned to a normal state, allowing flexible response to changing conditions
Solution Approach 2:
The driver state determining unit continuously monitors driver state and provides feedback to the retreat mode canceler. When the driver's state improves to normal levels, this feedback triggers automatic cancellation of retreat mode and re-enabling of override operations, creating a closed-loop safety mechanism
2Reliability
If the override operation is disabled during retreat mode, then the safety of the retreat process is improved, but the driver's ability to take control is reduced
Solution Approach 1:
The override operation status transitions from disabled to enabled based on dynamic assessment of driver state. The system moves from a restrictive state during retreat initiation to a permissive state when driver capability is confirmed, optimizing both safety and operational flexibility
Solution Approach 2:
The system changes the operational parameter of override detection from inactive to active based on driver state parameters. When the driver state determining unit assesses the driver as being in a normal state, the parameter change enables override operations without compromising retreat safety
Data Source
AI summary
A driving control system includes an automatic driving control device and a driver monitoring device. The automatic driving control device includes a driver state determining unit, an override detector, a retreat mode controller, and a retreat mode canceler. During traveling under an automatic driving mode, when the driver state determining unit determines from a driver state detected by the driver monitoring device that the driver is not in a state capable of driving normally, the retreat mode controller sets a retreat mode in which an override operation is disabled and an own vehicle is caused to travel for retreat. When the driver state determining unit determines, during traveling for retreat, that the driver has returned to the state capable of driving normally, the retreat mode canceler cancels the retreat mode, and enables detection of the override operation of the driver by the override detector.