Vehicle Headlamp Feedback Adjustment for Glare Misalignment
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Solution Overview
Problem
Modern automotive headlight systems, particularly ADB systems, suffer from misalignment due to external influences like temperature and aging, leading to glare and performance loss, with current adjustments being infrequent and inefficient.
Innovation Solution
A method using a feedback system with a control device, detection means, and electromagnetic signals to dynamically adjust headlight settings by identifying glare-causing misalignments, reducing light emission in specific directions, and modifying the light distribution to avoid glare.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If headlight adjustment is performed manually and infrequently, then system complexity is reduced, but manufacturing precision deteriorates due to misalignment from temperature and aging
Solution Approach 1:
The patent implements a feedback-based adjustment system where a detection device (camera) continuously monitors the light distribution pattern, identifies glare areas, and sends correction signals to the adjustment device. This closed-loop feedback mechanism automatically compensates for misalignment caused by temperature changes and aging, maintaining manufacturing precision without requiring complex manual intervention systems.
Solution Approach 2:
The headlight system performs self-adjustment through an automated control unit that processes detection data and actuates adjustment mechanisms without external intervention. The system monitors its own light distribution and automatically corrects alignment deviations, enabling self-service maintenance that preserves precision while keeping the overall system relatively simple.
2Ease of operation
If manual headlight readjustment is performed rarely, then ease of operation is improved, but reliability deteriorates due to persistent glare from misalignment
Solution Approach 1:
The system uses continuous feedback from the detection device to monitor light distribution and automatically triggers adjustments when misalignment is detected. This ensures reliable glare prevention without requiring frequent manual operation, as the system self-corrects alignment issues in real-time based on environmental conditions and aging effects.
Solution Approach 2:
The system performs preliminary adjustments proactively by detecting potential misalignment trends and correcting them before they cause glare problems. The control unit analyzes detection data and initiates adjustments in advance, maintaining reliable glare prevention while minimizing the need for reactive manual intervention.
3Reliability
If large masking distances are used in ADB systems to avoid glare, then reliability is improved, but productivity deteriorates due to significant performance loss
Solution Approach 1:
The system dynamically adjusts masking parameters based on actual light distribution measurements rather than using fixed large distances. The control unit processes detection data to determine precise masking boundaries, adjusting the masking area size and position in real-time. This maintains reliable glare avoidance by accurately identifying glare-risk zones while minimizing unnecessary masking, thereby preserving light distribution performance and avoiding the productivity loss associated with overly conservative fixed-distance masking.
4Manufacturing precision
If automated feedback adjustment is implemented, then manufacturing precision is improved, but device complexity increases due to additional detection and control components
Solution Approach 1:
The patent implements a feedback-based adjustment system where a detection device (camera) continuously monitors the light distribution pattern, identifies glare areas, and sends correction signals to the adjustment device. This closed-loop feedback mechanism automatically compensates for misalignment caused by temperature changes and aging, maintaining manufacturing precision without requiring complex manual intervention systems.
Solution Approach 2:
The headlight system performs self-adjustment through an automated control unit that processes detection data and actuates adjustment mechanisms without external intervention. The system monitors its own light distribution and automatically corrects alignment deviations, enabling self-service maintenance that preserves precision while keeping the overall system relatively simple.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method effectively adjusts headlight settings to prevent glare, ensuring compliance with legal and customer requirements by dynamically modifying the light distribution based on real-time feedback, reducing glare and enhancing system performance.
Implementation Method 1
The detection device is configured to detect at least a part of the dynamically modifiable light distribution of at least one predetermined type
Implementation Method 2
The transmission device is configured to generate the electromagnetic signals according to the data and to send the electromagnetic signals in a predetermined direction
Data Source
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AI summary
Method for adjusting a motor vehicle headlight system (1) for a motor vehicle (2) during its operation, wherein the motor vehicle headlight system (1) comprises a control device (2), at least one motor vehicle headlight (3) assigned to the control device (2), and detection means (20) assigned to the control device (2), and is configured to generate a light distribution (4) of at least one predetermined type, which light distribution (4) is dynamically modifiable by adjusting the at least one motor vehicle headlight (3) by means of the control device (2), wherein the detection means (20) are configured to detect external electromagnetic signals (5), which external electromagnetic signals (5) contain data (50) relevant for adjusting the motor vehicle headlight system (1), wherein the data (50) contain information about a glare-causing misadjustment of the at least one motor vehicle headlight (3);the control unit (2) is set up to evaluate the detected signals (5) with regard to the data (50) and to extract the information from the data (50), a procedure comprising the following steps: Step J1: Detecting the external electromagnetic signals (5) using the detection means (20); Step J2: Evaluating the external electromagnetic signals (5) with regard to the data (50) contained therein that is relevant for adjustment and extracting the information about the glare-causing misalignment of at least one motor vehicle headlight (3) from the data (50) using the control unit (2); Step J3: Adjusting the motor vehicle headlight system (1) using the control unit (2) to modify the light distribution (4) based on the extracted information in order to produce a modified light distribution (6).