Integrated ADB Headlamp with On-Board Camera
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Solution Overview
Problem
Existing adaptive driving beam (ADB) headlamp systems require complex and costly calibration processes that involve precise physical alignment of on-board cameras and headlamps, necessitating vehicle removal from assembly lines and increased manufacturing costs, and cannot be easily retrofitted into vehicles without pre-designed CAN-bus systems.
Innovation Solution
An ADB headlamp system with a digital camera integral to the headlamp housing, allowing for calibration before installation and independent operation from the vehicle CAN-bus, featuring a segmented lighting array and ADB controller that adjusts light distribution patterns based on detected objects, enabling easy retrofitting and reduced manufacturing complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If on-board camera and headlamp are separately installed requiring post-installation calibration, then system flexibility is improved, but manufacturing complexity and cost increase due to precise alignment requirements
Solution Approach 1:
The patent combines the camera and headlamp into a single integrated housing unit, eliminating the need for separate installation and post-installation calibration. The camera is positioned within the headlamp housing itself, ensuring fixed spatial relationship and eliminating alignment complexity while maintaining installation flexibility
2Adaptability or versatility
If vehicle CAN-bus system is required for ADB operation, then system integration is improved, but retrofitting capability deteriorates due to pre-design requirement
Solution Approach 1:
The patent segments the ADB functionality into a self-contained integrated unit that includes its own controller, camera, and lighting elements. This modular design allows the system to operate independently or integrate with existing vehicle systems, enabling retrofitting without requiring pre-designed CAN-bus infrastructure
3Ease of operation
If calibration is performed after vehicle assembly, then installation flexibility is improved, but production time and cost increase due to vehicle removal from assembly line
Solution Approach 1:
The patent performs all necessary calibration and alignment operations during the headlamp assembly manufacturing process itself, before the headlamp is installed in the vehicle. The integrated design ensures that spatial relationships are predetermined, allowing calibration to be completed in advance and eliminating post-installation adjustment steps
Data Source
AI summary
An automotive adaptive driving beam (ADB) headlamp (20) includes a housing (22), a digital camera (32), an ADB controller (28), a segmented lighting array (24), and an ADB driver (30), wherein the digital camera (32) is integral with the ADB headlamp (20). The housing (22) includes an attachment structure (34) for attachment to a vehicle headlamp cavity (15). The digital camera (32) captures an image preceding the vehicle (2) and the ADB controller (28) detects an object (48) in the image and generates a control signal based, at least in part, on a position of the object (48). The segmented lighting array (24) is disposed within the housing (22) and includes a plurality of solid-state light sources (40a-n) arranged to emit a light in a light distribution pattern (26). The ADB driver (30) selectively drives the solid-state light sources (40a-n) based on the control signal from the ADB controller (28).