Headlamp Levelling Controller Anticipating Speed Bumps
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing headlamp leveling systems adjust the headlamp angle based solely on vehicle height sensors, often causing glare to preceding and opposing vehicles when traversing speed bumps due to delayed adjustments.
Innovation Solution
A headlamp leveling system that utilizes a leveling controller generating a control code based on speed bump location, current vehicle location, and vertical levels of both the front and rear surfaces to adjust the headlamp's light irradiation angle, preventing glare by anticipating and adjusting the angle before the vehicle crosses the speed bump.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the control system adjusts the headlamp angle using only a vehicle height sensor on the rear surface, then the system structure remains simple, but the adjustment is delayed and causes glare to preceding and opposing vehicles when crossing speed bumps
Solution Approach 1:
The system performs preliminary action by detecting speed bump locations in advance using navigation information and GPS coordinates. When the vehicle approaches a speed bump within a predetermined distance, the controller proactively adjusts the headlamp angle before the vehicle actually crosses the bump, preventing glare from occurring in the first place rather than reacting after the tilt happens
Solution Approach 2:
The system implements feedback by continuously monitoring the vehicle's current location via GPS and comparing it with stored speed bump location data from navigation. This closed-loop feedback mechanism allows the controller to detect upcoming speed bumps and trigger timely headlamp angle adjustments based on real-time position information
2Reliability
If the system uses navigation information and GPS to detect speed bump locations in advance, then glare prevention improves, but the device complexity increases
Solution Approach 1:
The system achieves multi-functionality by reusing existing vehicle components for multiple purposes: the navigation system and GPS receiver, originally designed for route guidance, are also utilized for speed bump detection and headlamp angle control timing. This eliminates the need for dedicated speed bump detection hardware, reducing overall system complexity while maintaining effective glare prevention
Solution Approach 2:
The system employs self-service by having the existing navigation and GPS systems perform the additional function of speed bump detection without requiring separate dedicated detection devices. The controller integrates and processes information from these existing systems to determine when and how to adjust headlamp angles, making the system self-sufficient
Data Source
AI summary
The present disclosure relates to a headlamp leveling system. The headlamp leveling system includes a leveling controller that generates a control code based on information on a location of a speed bump, information on a current location of a vehicle, and information on a vertical level of a rear surface of the vehicle, and a headlamp leveling device for changing a light irradiation angle of a headlamp to a light irradiation angle corresponding to a code value of the control code.