Adaptive Headlight Illumination for Animal Collision Avoidance
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Solution Overview
Problem
Existing headlight control systems do not effectively manage the illuminating range and direction to prevent animals, such as deer, from freezing when their eyes are illuminated, which can lead to increased collision risks.
Innovation Solution
A light distribution control apparatus that uses vehicle-mounted sensors to detect animal positions and traveling directions, determining the possibility of contact and adjusting the headlight's illuminating range and direction to keep the animal's head out of the light when a collision is likely, and within the light when safe, thereby preventing freezing and potential collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the headlight illuminates the animal's head to detect and alert the driver, then the driver awareness is improved, but the animal may freeze due to eye illumination increasing collision risk
Solution Approach 1:
The patent applies local quality by differentiating illumination treatment between the animal's head and body. The headlight selectively illuminates the body while avoiding the head/eye region, creating localized illumination zones with different intensities. This resolves the contradiction by providing sufficient illumination for driver awareness of the animal's presence while avoiding the sensitive eye region that would cause freezing behavior.
Solution Approach 2:
The patent implements dynamics by making the headlight illumination pattern adjustable and controllable. The system can dynamically modify the illuminating range and direction based on detected animal position and collision risk assessment. This allows the system to adapt between full illumination for detection and restricted illumination for safety, resolving the contradiction through dynamic control rather than static illumination.
2Measurement precision
If the headlight illuminating range is expanded to ensure animal detection, then detection reliability is improved, but the likelihood of illuminating the animal's head increases causing freezing
Solution Approach 1:
The patent ensures comprehensive animal detection by illuminating the body while protecting the head region. The selective illumination pattern maintains detection reliability by lighting the animal's body sufficiently for the sensor to detect presence and position, while the avoided head region prevents the harmful freezing effect. This local differentiation resolves the contradiction between detection needs and harm prevention.
3Reliability
If the headlight is controlled to avoid illuminating the animal's head, then freezing is prevented, but the animal may be less visible to the driver
Solution Approach 1:
The patent resolves the visibility concern by providing sufficient illumination to the animal's body while avoiding the head. The body illumination maintains animal visibility for driver awareness, and the head avoidance prevents freezing. The localized illumination strategy ensures both collision prevention and adequate visibility by distributing light appropriately across different body regions.
Solution Approach 2:
The system dynamically adjusts illumination distribution to balance visibility and safety. By controlling the illuminating range and direction dynamically, the system ensures the animal remains visible through body illumination while preventing head illumination that would cause freezing. This dynamic control resolves the apparent trade-off between visibility and safety.
Data Source
AI summary
In a case where a light distribution control apparatus judges that there is a possibility that a driver's own vehicle and an animal will contact each other if it is assumed that the animal remains at the present position, then it controls headlight such that the head of the animal is out of the illuminating range of the headlight. In a case where the light distribution control apparatus judges that there is no possibility that the driver's own vehicle and the animal will contact each other if it is assumed that the animal remains at the present position, then it controls the headlight such that the head of the animal is within the illuminating range of the headlight.