Vehicle Control for Sleep-State Adaptive Driver Stimulation
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Solution Overview
Problem
Existing vehicle control systems for automated driving do not effectively differentiate between a driver's sleep and wake states, leading to reduced driver convenience during sleep-permitted automated driving, as they fail to adjust controls accordingly.
Innovation Solution
A vehicle control device and method that includes a driver condition estimation unit to determine the driver's state and a stimulation reduction control unit to minimize stimulation to the driver during sleep-permitted automated driving, thereby enhancing convenience by suppressing notifications and adjustments during lane changes or other critical driving events.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the vehicle control system provides standard notifications and controls during automated driving, then driving safety and system functionality are maintained, but driver convenience and comfort are reduced when the driver is sleeping
Solution Approach 1:
The system dynamically adjusts notification intensity and control behavior based on real-time driver state detection. When the driver is detected to be sleeping, the system transitions from standard notification mode to reduced stimulation mode, modifying alert intensity, notification frequency, and control intervention thresholds to match the driver's current state while maintaining safety
Solution Approach 2:
The system changes operational parameters such as notification volume, display brightness, haptic feedback intensity, and alert timing based on the detected driver state. These parameter adjustments allow the system to reduce stimulation to sleeping drivers while maintaining adequate monitoring and safety controls
2Object-affected harmful factors
If the vehicle control system provides frequent notifications during lane changes or critical events, then driving safety is maintained, but driver sleep quality is degraded
Solution Approach 1:
The system proactively detects driver sleep state before critical events occur and pre-adjusts notification settings to prevent sleep disruption. When a sleeping driver is detected, the system prepares reduced stimulation protocols in advance, so that when lane changes or critical events occur, the notifications are already optimized to minimize disturbance while maintaining safety
Solution Approach 2:
The system performs preliminary driver state assessment and notification configuration before executing driving maneuvers. By detecting sleep state in advance and pre-configuring appropriate notification intensity, the system ensures that subsequent lane changes or critical event notifications will not excessively disturb the sleeping driver
Data Source
AI summary
A vehicle control device that performs sleep-permitted automated driving during which a driver is permitted to sleep is configured to estimate a condition of the driver and to exercise control to reduce stimulation to the driver when it is estimated that the driver is in a sleep state during the sleep-permitted automated driving of the vehicle.