Vehicle Headlamp Shield Rotation for Rapid Flashing
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Solution Overview
Problem
Conventional headlamp systems require extensive and time-consuming changes in light distribution patterns to initiate a flashing function, which can be slow and inefficient, especially when transitioning from Class-C to high-beam patterns.
Innovation Solution
A headlamp control apparatus that includes a sensor to detect the current light distribution pattern and a controller to rotate the shield by a smaller predetermined angle, allowing for quicker execution of the flashing function by identifying and adjusting between low-beam and anti-dazzle high-beam patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the shield is rotated by a large angle (0 to 180 degrees) to change from Class-C light distribution pattern to high-beam pattern, then the flashing function can be achieved, but it takes a long time to perform the flashing function
Solution Approach 1:
The shield is pre-positioned in multiple predetermined positions corresponding to different light distribution patterns (Class-C, Class-V, anti-dazzle high-beam). When a flashing command is received, the controller rotates the shield to a specific predetermined position based on the current pattern, avoiding the need for large-angle rotation through the entire sequence of patterns.
Solution Approach 2:
The rotation range of the shield is divided into multiple discrete predetermined positions instead of continuous rotation. Each position corresponds to a specific light distribution pattern, allowing the system to jump directly to the required position rather than rotating through all intermediate positions.
2Adaptability or versatility
If the shield rotates through various light distribution patterns (Class-C to Class-V to anti-dazzle high-beam) to reach high-beam pattern, then the flashing function can be performed, but many changes of light distribution patterns are required
Solution Approach 1:
The shield is designed with predetermined positions that are pre-configured for different light distribution patterns. The controller stores information about current and target positions, enabling direct navigation to the required pattern without sequentially changing through all intermediate patterns.
Solution Approach 2:
The shield rotation system dynamically adjusts its movement based on the current position and the target position. The controller calculates the optimal rotation path and executes rotation only to the necessary predetermined position, making the system adaptive rather than following a fixed sequential path.
Data Source
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AI summary
Disclosed herein is an apparatus and a method for controlling a headlamp, and more particularly, an apparatus and a method for controlling a headlamp to perform a flashing function more efficiently while a vehicle is being driven. The apparatus includes, a rotating shield (130) including a first shield protrusion portion (132) which includes a plurality of protrusions formed in a direction of a rotation axis of a rotatable body (131) and a second shield protrusion portion (133) disposed on a side of the first shield protrusion portion (132); a sensor (210) detecting a light distribution pattern of a vehicle based on a rotation angle of the rotating shield (130); and a rotating unit rotating the rotating shield at a predetermined angle toward the first or second shield protrusion portion, which forms the detected light distribution pattern, in order to perform a flashing function.