Adaptive Headlight Warning Patterns for Hazard Detection
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Solution Overview
Problem
Current vehicle headlight systems fail to effectively warn drivers of objects in their vicinity, particularly pedestrians or cyclists, leading to accidents, as they often perceive hazards late due to inadequate illumination patterns.
Innovation Solution
A method and device that change the light emission of vehicle headlights using position signals to emit a changing illumination pattern onto objects or their surroundings, enhancing visibility and attention through varying brightness and pattern shapes, such as circular or strip-shaped light structures, to alert drivers of potential hazards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional headlight illumination is used, then the road is illuminated for basic visibility, but drivers perceive hazards late and cannot effectively warn other road users
Solution Approach 1:
The patent applies periodic action by emitting light patterns that oscillate or move back and forth across the road surface. The control unit activates light-emitting elements in a sequential pattern that creates a moving or oscillating illumination effect, allowing multiple passes over the same area to alert both the driver and other road users to hazards earlier than conventional static illumination.
Solution Approach 2:
The patent implements dynamics by transitioning from static headlight illumination to dynamic, moving light patterns. The system varies the illumination pattern over time, creating moving bands of light that sweep across the road surface. This dynamic behavior makes the illumination more noticeable to both the driver and external observers, improving hazard detection time.
2Illumination intensity
If static headlight illumination is used, then energy consumption is moderate, but the illumination pattern does not attract sufficient attention from drivers and other road users
Solution Approach 1:
The system uses periodic activation of light-emitting elements to create moving illumination patterns. By sequentially activating elements rather than illuminating all elements simultaneously, the system creates a dynamic visual effect that attracts attention while managing energy consumption through time-multiplexed operation.
Solution Approach 2:
The headlight assembly is divided into multiple independently controllable light-emitting elements or zones. The control unit activates specific segments in a sequential pattern to create moving illumination effects. This segmentation allows the system to achieve attention-catching dynamic patterns while consuming less energy than continuous full-illumination modes.
3Adaptability or versatility
If conventional headlight systems are used, then the system complexity is low, but the system cannot provide adaptive warning illumination for different hazard scenarios
Solution Approach 1:
The patent implements multi-functionality by using a single headlight system to perform both conventional illumination and adaptive warning functions. The control unit processes various sensor inputs (object detection, hazard classification) and generates appropriate light patterns accordingly. This universal system can adapt to different hazard scenarios without requiring separate dedicated warning devices.
Solution Approach 2:
The system employs feedback by continuously monitoring the driving environment through sensors and adjusting the illumination pattern in response to detected hazards. The control unit receives feedback about object position, type, and distance, then adapts the light emission pattern accordingly, creating a closed-loop adaptive warning system that responds to real-time conditions.
Data Source
Figure 1~2A
Figure 2B~2C
Figure 3~4
AI summary
The method involves reading a position signal which represents a position of an object (140) in front of or next to a vehicle (100). The light emission from the headlamp is changed on the object or in an environment (130) of the object using the position signal. The changing of a varying lighting pattern (190) on the object or in an environment of the object is broadcasted to change the light emission of the headlamp of the vehicle. Independent claims are included for the following: (1) a device for changing light emission of a headlamp of a vehicle; and (2) a computer program product with a program code.