Headlight Notification Control for Oncoming Vehicle Dazzle Reduction
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Solution Overview
Problem
Existing vehicle control systems face challenges in effectively executing out-of-vehicle notifications using headlights, as they may dazzle drivers or fail to prompt necessary avoidance operations due to inappropriate timing and intensity of notifications, especially when automatic illumination switching control is not activated.
Innovation Solution
A control device that utilizes a processing circuitry to execute out-of-vehicle notifications based on the distance between the host vehicle and an oncoming vehicle, adjusting notification intensity and type (e.g., headlight flashing) when the distance is within specific thresholds, ensuring the notification is intuitive yet avoids dazzling the driver, and operates independently of the automatic illumination switching control's status.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If out-of-vehicle notification is executed using headlight, then oncoming drivers are notified of host vehicle presence, but driver may be dazzled
Solution Approach 1:
The system dynamically adjusts headlight parameters (illumination intensity, flashing frequency, duty cycle) based on detected distance to oncoming vehicles. When distance is large, high beam or frequent flashing is used for effective notification. When distance is small, low beam or reduced intensity is used to avoid dazzling the driver.
Solution Approach 2:
The notification system transitions from static headlight control to dynamic control that adapts in real-time to changing distance conditions. The processing circuitry continuously monitors distance and adjusts notification intensity and pattern accordingly, making the system responsive to environmental conditions.
2Reliability
If out-of-vehicle notification is executed at all distances, then collision avoidance is promoted, but driver operation is hindered by dazzling
Solution Approach 1:
The system changes notification parameters based on distance thresholds. At long distances, aggressive notification (high beam, frequent flashing) promotes collision avoidance. At short distances, gentle notification (low beam, reduced frequency) maintains driver operation comfort.
Solution Approach 2:
Different notification intensities are applied to different distance zones. The system divides the spatial environment into regions (far field, near field) and applies appropriate notification strength to each region, optimizing both safety and comfort for each scenario.
3Loss of information
If notification intensity is increased to ensure visibility, then notification effectiveness is improved, but dazzling effect increases
Solution Approach 1:
The system adjusts illumination intensity parameters based on distance measurements. When oncoming vehicles are far away, higher intensity ensures notification visibility. When vehicles are nearby, intensity is reduced to prevent dazzling while maintaining sufficient visibility for safety.
Data Source
AI summary
A control device for controlling a host vehicle including: a processing circuitry configured to, when another vehicle traveling in a opposite direction to the host vehicle and having a possibility to collide with the host vehicle is detected in front of the host vehicle, execute an out-of-vehicle notification using a headlight based on a distance between the host vehicle and the another vehicle. When the distance is equal to or smaller than a first threshold and equal to or larger than a second threshold that is smaller than the first threshold, the processing circuitry executes the out-of-vehicle notification, and when the distance is smaller than the second threshold, the processing circuitry does not execute the out-of-vehicle notification or executes the out-of-vehicle notification with a notification intensity lower than that when the distance is equal to or smaller than the first threshold and equal to or larger than the second threshold.