Infrared Stripe Headlamp Control for Adaptive Illumination
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Solution Overview
Problem
Current automatic control systems for vehicle headlamps are costly due to the complexity and high-end requirements of Advanced Driver Assistance Systems (ADAS), which increases the overall vehicle cost without effectively addressing issues like dazzle prevention and adaptive illumination.
Innovation Solution
An auto-regulated vehicle headlamp system that projects infrared stripes onto the road surface, using a camera and image processor to generate control commands for adjusting LED light sources, enabling adaptive illumination and anti-dazzle functions without the need for expensive ADAS systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If expensive ADAS systems are used for automatic headlamp control, then headlamp automation and adaptability are improved, but vehicle cost increases significantly
Solution Approach 1:
The patent replaces expensive ADAS systems with inexpensive components: a simple infrared projector, basic camera, and matrix LED headlamp. These low-cost components achieve automatic headlamp control through infrared stripe projection and contour detection, eliminating the need for costly radar, ultrasonic sensors, and complex processing units required by traditional ADAS systems.
Solution Approach 2:
The patent substitutes mechanical/optical measurement systems with an infrared-based optical field system. By projecting infrared stripes and detecting their distortion through a camera, the system achieves automatic control without mechanical sensors or complex electronic ADAS infrastructure, reducing system complexity and cost.
2Device complexity
If manual adjustment of headlamps is used, then system complexity is reduced, but safety deteriorates due to driver distraction and delayed response
Solution Approach 1:
The system performs self-service by automatically detecting objects and adjusting headlamp patterns without driver intervention. The infrared projector and camera continuously monitor the road environment, and the matrix LED headlamp autonomously switches between low beam and high beam modes, eliminating the need for manual adjustment while ensuring safety.
Solution Approach 2:
The patent implements a feedback loop where the camera captures infrared stripe distortion caused by objects, the image processor analyzes the contour information, and the controller adjusts headlamp patterns accordingly. This closed-loop feedback system ensures reliable automatic control while maintaining system simplicity.
3Illumination intensity
If high beam is used continuously, then illumination intensity is improved, but harmful effects increase due to dazzle to pedestrians and opposite vehicle occupants
Solution Approach 1:
The patent employs dynamic headlamp control where the matrix LED headlamp continuously adjusts its illumination pattern based on real-time object detection. The system switches between low beam and high beam modes, and between different high beam patterns (with or without right-turning light), optimizing illumination intensity while minimizing dazzle effects on pedestrians and opposite vehicle occupants.
Solution Approach 2:
The matrix LED headlamp applies local quality by selectively activating specific LED groups to create different illumination patterns. When objects are detected, only certain LED segments are activated to provide targeted illumination while avoiding areas where pedestrians or opposite vehicles may be present, reducing harmful dazzle effects while maintaining necessary illumination.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system reduces vehicle costs while achieving intelligent and adaptive headlamp control, including anti-dazzle and warning functions, by dynamically adjusting LED light patterns based on road conditions and object detection.
Implementation Method 1
a projector assembly capable of projecting infrared rays, configured to project infrared stripes onto a traveling road-surface
Implementation Method 2
the infrared stripes being constituted by alternate bright and dark stripes so that corresponding distorted stripes can be formed when an object, during appearing or disappearing on the traveling road-surface, has a changed contour
Data Source
AI summary
Provided are an auto-regulated vehicle headlamp, an automatic regulation method and a vehicle. The auto-regulated vehicle headlamp includes: a projector assembly capable of projecting infrared rays, configured to project infrared stripes onto a traveling road-surface; the infrared stripes being constituted by alternate bright and dark stripes so that corresponding distorted stripes can be formed when an object, during appearing or disappearing on the traveling road-surface, has a changed contour; a camera configured to capture image information on the distorted stripes; an image processor in data connection with the camera and configured to acquire the image information and generate a headlamp control command accordingly; a matrix headlamp including a plurality of LED light sources; and a first controller in data connection with the matrix headlamp and the image processor, configured to acquire the headlamp control command and adjust the number of the LED light sources to be activated and their brightness.