Projection Headlamp Auto-Leveling for Front and Rear Glare Control
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Solution Overview
Problem
Conventional projection headlamps only adjust light radiation to avoid glare for vehicles on the opposite side, failing to account for various positions and rear objects, limiting their effectiveness in optimizing light projection for different scenarios.
Innovation Solution
A headlamp auto-leveling system that adjusts light radiation based on the state of a mobility device and the presence of physical objects in front and rear sides, using an information collection unit to classify objects and control the projection headlamp's aiming, implementing modes like welcome, goodbye, interference avoidance, and interference prevention to optimize light projection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If projection headlamps adjust light radiation only for opposite side vehicles, then glare prevention for opposite vehicles is improved, but effectiveness for various positions and rear objects deteriorates
Solution Approach 1:
The headlamp control system is designed to perform multiple functions by detecting objects in various positions (front, rear, left, right) and adjusting light radiation accordingly. The system handles different scenarios including opposite side vehicles, rear vehicles, pedestrians, and walls, making it universally applicable to diverse driving situations rather than limited to a single function of preventing glare for opposite vehicles only.
Solution Approach 2:
The headlamp system dynamically adjusts the radiation pattern and aiming direction based on real-time detection of object positions and vehicle state. The control unit changes light projection parameters (such as projecting on road surface vs. on wall) depending on the detected scenario, making the system adaptive and versatile for various positions and conditions rather than static.
2Illumination intensity
If headlamp aiming is adjusted upward for high driving speeds, then visibility in forward path is improved, but glare to rear vehicles may increase
Solution Approach 1:
The control unit receives feedback from the detection unit about the position of rear vehicles and adjusts the headlamp radiation pattern accordingly. When a rear vehicle is detected, the system modifies the light projection to avoid shining directly into the rear vehicle's mirrors or windows, even when upward adjustment is needed for forward visibility at high speeds. This feedback mechanism resolves the contradiction by balancing forward illumination with rear glare prevention.
Data Source
AI summary
A headlamp auto-leveling system and a method thereof are disclosed. The headlamp auto-leveling system and method adjust the radiation direction of light through a headlamp according to the state of a mobility device and the presence of physical objects in the front and rear sides of the mobility device, thereby reducing or minimizing the effect of a projection image on the surrounding mobility device and enhancing the accuracy of identification of messages through the projection image.