Headlight Control Apparatus for Dynamic Lighting Angle Adjustment
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Solution Overview
Problem
Existing headlight systems struggle to balance visibility for the driver of a vehicle while avoiding dazzling other drivers, particularly when multiple vehicles are present ahead, as they adjust lighting angles based on static settings rather than real-time positional relationships.
Innovation Solution
A headlight control apparatus equipped with an electronic control unit and a forward image acquiring device dynamically adjusts the lighting angles of headlights based on the positional differences between the own vehicle and detected forward-moving vehicles, ensuring optimal illumination for the driver while minimizing glare for other drivers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the lighting angles of the headlights are set to greater angles to light the area far forward, then the driver of the own vehicle can see the view ahead clearly, but the driver of the forward moving vehicle may be dazzled
Solution Approach 1:
The patent applies dynamics by making the lighting angle adjustable rather than fixed. The electronic control unit dynamically changes the lighting angle based on the detected position and distance of forward moving vehicles, allowing the system to adapt between maximizing visibility and minimizing dazzling effects according to real-time driving conditions
Solution Approach 2:
The patent changes the lighting angle parameter based on the longitudinal and lateral positions of detected vehicles. By calculating the appropriate angle that directs light away from detected vehicles while maintaining adequate illumination for the driver, the system resolves the contradiction between visibility and avoiding dazzle
2Object-affected harmful factors
If the lighting angles of the headlights are set to smaller angles to avoid dazzling the driver of the forward moving vehicle, then the driver of the forward moving vehicle is not dazzled, but the driver of the own vehicle cannot see the view ahead clearly
Solution Approach 1:
The patent applies local quality by directing different lighting angles to different spatial regions. When vehicles are detected in specific lateral positions, the system adjusts the lighting angle to illuminate areas away from those vehicles while maintaining illumination in other forward directions, creating localized illumination patterns that avoid dazzling specific vehicles
3Device complexity
If the lighting angle is adjusted based on static settings, then the control system is simple, but it cannot adapt to real-time positional relationships between vehicles
Solution Approach 1:
The patent implements feedback by using the forward image acquiring device to continuously detect the position of forward moving vehicles and feeding this information back to the electronic control unit. The control unit then adjusts the lighting angle based on this feedback, creating a closed-loop system that adapts to real-time conditions while maintaining manageable complexity through automated control
Data Source
AI summary
A headlight control apparatus sets a forward moving vehicle as a target vehicle, acquire a target longitudinal difference between a reference lateral line in a forward image and a target vehicle lateral line which defines a position of the target vehicle in a longitudinal direction in the forward image, acquire a target lateral difference between a reference longitudinal line in the forward image and a target vehicle longitudinal line which defines a position of the target vehicle in the lateral direction in the forward image, set a target lighting angle of the at least one headlight, depending on the target longitudinal and lateral differences, and adjust the lighting angle of at least one headlight to the target lighting angle.