Rear Vehicle Alert Control Using Driver Gaze-Adaptive Warnings
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing rear vehicle approach notification systems cause driver inconvenience and annoyance due to the need to shift gaze between visual and auditory warnings, disrupting the driving experience.
Innovation Solution
A rear vehicle approach notification apparatus that uses a rear camera, radar sensor, driver monitor camera, in-vehicle display, and speaker to provide visual and auditory notifications based on driver gaze detection, adjusting the notification method (visual emphasis or sound) according to whether the driver is viewing the display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sound output is used to notify the driver of the approaching rear vehicle, then the notification effectiveness is improved, but the driver needs to check the meter which causes line of sight disruption and annoyance
Solution Approach 1:
The system uses a driver monitor camera to detect the driver's line of sight and provides feedback to the notification control unit. Based on this feedback, the notification method is dynamically adjusted: visual notification is used when the driver is looking at the meter, and sound notification is used when the driver is looking at the road, thereby resolving the contradiction between notification effectiveness and driver convenience
Solution Approach 2:
The notification system dynamically switches between visual and sound notification modes based on real-time detection of driver behavior. The notification control unit changes the notification method according to the driver's line of sight direction, making the system adaptive rather than static, which resolves the contradiction by optimizing both notification effectiveness and driver convenience under different conditions
2Loss of information
If visual display is used to notify the driver, then the driver can see the notification on the in-vehicle display, but the driver must shift gaze from the road to the display causing annoyance
Solution Approach 1:
The driver monitor camera provides real-time feedback on the driver's line of sight direction to the notification control unit. This feedback mechanism enables the system to determine when the driver is looking at the road versus the display, allowing dynamic adjustment of the notification method to prevent unnecessary gaze shifts and maintain driver comfort while ensuring notification delivery
3Ease of operation
If the notification system continuously monitors driver gaze and adjusts notification method, then driver comfort is improved, but the device complexity increases due to additional cameras and control logic
Solution Approach 1:
The driver monitor camera serves multiple functions: it detects the driver's line of sight for notification control, and can also be used for other driver monitoring purposes. This multi-functionality reduces the need for separate dedicated components, thereby mitigating the increase in device complexity while maintaining driver comfort improvements
Solution Approach 2:
The notification control unit integrates the line of sight detection function with the existing notification control system. By merging the gaze detection and notification control functions into a single integrated unit, the system reduces overall complexity compared to having separate independent systems, while still achieving the benefit of improved driver comfort through adaptive notification
Data Source
AI summary
A rear vehicle approach notification apparatus includes an in-vehicle display, a speaker configured to output sound from a position different from the in-vehicle display to the driver, a first determination unit, a second determination unit, and a notification unit. The notification unit, when the first determination unit determines that a rear vehicle is approaching the host vehicle, performs the notification by displaying a rear vehicle approach display on the in-vehicle display without outputting sound from the speaker.