Headlamp Optical Center Aiming Using Fender-Based Aim Bias
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Solution Overview
Problem
Current headlamp aiming systems in manufacturing plants face limitations due to the use of floor-up techniques, leading to vehicle styles being divided into aim plus ride height groups, which can result in reduced capability and increased complexity as multiple ride heights within a style group must adhere to a single aim specification.
Innovation Solution
A method and system that measure front fender characteristics to determine an optical center as a reference target, applying an aim bias to adjust headlamp aim, allowing for individual vehicle-specific adjustments, eliminating the need for floor-up aiming and simplifying the process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If floor-up aiming techniques are used, then headlamp aim can be adjusted, but vehicle styles must be divided into aim plus ride height groups, increasing system complexity
Solution Approach 1:
The patent extracts the ride height measurement and compensation function from the traditional floor-up aiming system. By measuring ride height independently and calculating compensation values, the system removes the need to divide vehicles into complex aim plus ride height groups, thereby reducing system complexity while maintaining aiming capability
Solution Approach 2:
The patent introduces an intermediary optical center reference point that mediates between the headlamp and the aiming system. This optical center serves as a universal reference that works across different vehicle styles and ride heights, eliminating the need for complex vehicle grouping while preserving aiming accuracy
2Ease of operation
If floor-up aiming techniques are used, then headlamp aim can be adjusted, but multiple ride heights within a style group must adhere to a single aim specification, reducing adaptability
Solution Approach 1:
The patent applies local quality by providing individualized aim bias compensation for each vehicle based on its specific ride height measurement. Instead of forcing all vehicles in a style group to adhere to a single aim specification, the system calculates and applies unique compensation values tailored to each vehicle's actual ride height, thereby enhancing adaptability while maintaining aiming capability
3Manufacturing precision
If individual vehicle-specific adjustments are implemented, then aiming accuracy is improved, but measurement and calculation complexity increases
Solution Approach 1:
The patent implements a universal optical center reference system that can be applied across all vehicle styles and configurations. This universal reference point, combined with standard ride height measurement procedures, enables individual vehicle-specific adjustments without requiring complex, vehicle-specific measurement systems, thereby achieving high aiming accuracy while controlling measurement system complexity
Data Source
AI summary
A system and method include measuring at least one front fender characteristic and determining an optical center as a reference target for a headlamp based on the at least one front fender characteristic. Additionally, an aim bias based on the optical center is determined, and headlamp aim is adjusted to a final aim target based on the aim bias.