Vehicle Light Distribution Control Device Glare Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The repeated limitation and restoration of illumination regions in vehicle headlights due to erroneously detected reflecting plates on the road lead to unnecessary glare and reduced marketability.
Innovation Solution
A vehicle light distribution control system that uses a camera and controller to detect and differentiate between vehicles and reflecting objects, limiting illumination only when a vehicle is detected and maintaining the limited region even after the object is no longer detected as a vehicle, thereby preventing repeated adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the illumination region is limited to prevent glare to detected objects, then glare prevention is improved, but the system produces repeated unnecessary adjustments when reflecting plates are erroneously detected as vehicles
Solution Approach 1:
The system uses feedback from the camera to detect whether an object is illuminated and whether it meets vehicle detection criteria. When a reflecting plate is erroneously detected as a vehicle, the system limits illumination, but then the camera feedback shows the object no longer meets vehicle criteria, triggering cancellation of the limitation. This feedback loop prevents repeated unnecessary adjustments by continuously monitoring detection results.
Solution Approach 2:
The illumination region limitation is made dynamic rather than static. The system adjusts the illumination limitation status based on real-time camera detection results. When an object is detected as a vehicle, limitation is applied; when detection criteria are no longer met, limitation is canceled. This dynamic adjustment prevents the system from maintaining unnecessary limitations on reflecting plates.
2Measurement precision
If the illumination region is restored after object is no longer detected as vehicle, then detection accuracy is improved, but the reflecting plate is illuminated again and erroneously detected as vehicle again
Solution Approach 1:
The camera provides continuous feedback on whether objects meet vehicle detection criteria. When a reflecting plate is illuminated and erroneously detected as a vehicle, the system applies limitation. The camera then detects that the object no longer meets vehicle criteria (since it's not illuminated), triggering cancellation of limitation. This feedback mechanism handles the complexity of distinguishing vehicles from reflecting plates automatically.
3Object-affected harmful factors
If the system continuously monitors and adjusts illumination region, then glare prevention is improved, but unnecessary repeated adjustments occur due to erroneous detection
Solution Approach 1:
The system performs preliminary detection using the camera before applying illumination limitation. When an object is detected that meets vehicle criteria, the system applies limitation. Then it performs follow-up detection to check if the object still meets vehicle criteria. If not (as with reflecting plates), the limitation is canceled. This preliminary and follow-up detection approach prevents unnecessary repeated adjustments by verifying detection accuracy before and after limitation.
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
This solution effectively reduces the unnecessary repetition of illumination region adjustments, preventing glare and enhancing the reliability of the vehicle's lighting system.
Implementation Method 1
there may be a case where an object such as a reflecting plate on the side of the road or the like is erroneously detected by the camera as another vehicle
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
A vehicle light distribution control apparatus includes a camera configured to capture a scene in a forward direction of the vehicle; a lighting apparatus configured to illuminate a forward direction of the vehicle with illumination light; and a controller configured to detect an image portion in an image captured by the camera as an object estimated as another vehicle when the image portion meets a predetermined criterion, and control a light distribution of the illumination light based on a detection result, wherein if the controller detects the object estimated as another vehicle within an illumination region of the illumination light, it limits the illumination region of the illumination light such that the object estimated as another vehicle is not illuminated by the illumination light, and then if it does not detect an object estimated as another vehicle within a non-illumination region of the illumination light due to the limitation, it restricts a cancellation of the limitation of the illumination region of the illumination light until a predetermined cancellation criteria is met.