Driver Takeover Alerts With Staged Sound and Vibration Cues
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Solution Overview
Problem
Current autonomous vehicle systems lack an effective method to seamlessly transfer control authority back to the driver during autonomous driving, particularly in situations requiring driver intervention, such as failures or external risks, with inadequate notification strategies to ensure timely and safe handover.
Innovation Solution
The system employs a control circuit that outputs a series of notifications, adjusting intensity and duration based on vehicle speed, traffic, and lane recognition quality, and includes a power seat adjustment to prepare the driver for control resumption, using a combination of sound and vibration notifications to incrementally increase alertness and readiness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a notification system is implemented to alert the driver during autonomous driving, then the driver's awareness and readiness for control takeover is improved, but the complexity of the system increases due to multiple notification modes and adjustment mechanisms
Solution Approach 1:
The notification system is segmented into three distinct notification stages (first, second, and third notifications) with different intensities and types. Each notification can be independently configured and delivered through different channels (visual, auditory, haptic), allowing the system to progress from gentle reminders to urgent warnings, thereby improving reliability without overwhelming the driver with a single complex notification mechanism.
Solution Approach 2:
The notification system dynamically adapts its behavior based on real-time driving conditions. The control circuit adjusts notification intensity, timing, and type according to vehicle speed, traffic conditions, and lane recognition quality. This dynamic adaptation ensures optimal driver alertness while managing system complexity through context-aware parameter adjustment rather than fixed complex logic.
2Productivity
If the notification intensity and frequency are increased to ensure driver alertness, then the driver's responsiveness to control takeover is improved, but the driver may experience distraction or discomfort
Solution Approach 1:
The notification sequence is divided into three progressive stages with increasing intensity. The first notification uses gentle cues, the second increases intensity, and the third uses maximum intensity. This segmentation allows the driver to gradually become alert without sudden overwhelming stimuli, improving handover efficiency while minimizing distraction and discomfort.
Solution Approach 2:
The system employs periodic notifications with configurable time intervals between each stage. The control circuit can adjust the timing and frequency of notifications based on driving conditions, providing rhythmic alerts that maintain driver awareness without creating chaotic or overly frequent interruptions that would cause distraction.
3Reliability
If the system provides extensive preparation time and multiple notification stages for control takeover, then the driver's readiness is improved, but the time required for safe handover increases
Solution Approach 1:
The system performs preliminary actions by initiating the first notification well in advance of the actual control takeover moment. The control circuit starts the notification sequence early, allowing the driver to gradually become aware and prepare for handover. This preliminary alerting improves driver readiness while managing handover time by spreading the preparation across multiple staged notifications rather than requiring all preparation time in a single extended period.
Solution Approach 2:
The notification time intervals are dynamically adjusted based on driving conditions. The control circuit can shorten or extend the time between notifications depending on vehicle speed, traffic density, and environmental factors. This dynamic timing optimizes the balance between giving the driver sufficient preparation time and minimizing the overall handover duration.
4Adaptability or versatility
If the notification system is customized based on driving conditions such as speed and traffic, then the appropriateness and effectiveness of notifications is improved, but the computational load and system complexity increase
Solution Approach 1:
The system customizes notifications by changing key parameters such as intensity, duration, and type based on driving conditions. The control circuit monitors variables like vehicle speed, traffic density, and lane recognition quality, then adjusts notification parameters accordingly. This parameter-based adaptation provides high versatility without requiring complex system architecture, as it modifies existing notification components rather than adding entirely new systems.
Data Source
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AI summary
An apparatus (200) for providing a notification of control authority transition in a vehicle is provided. The apparatus (200) includes a speaker (210) configured to output a sound notification, a vibration motor (220) configured to output a vibration notification, and a control circuit (240) configured to be electrically connected with the speaker and the vibration motor. The control circuit is configured to output a first notification using the speaker (210) during a first time interval, when a situation to transfer control authority for the vehicle occurs, output a second notification using the speaker (210) and the vibration motor (220) during a second time interval, after the first time interval elapses, and output a third notification using the speaker (210) and the vibration motor (220) during a third time interval, after the second time interval elapses.