Automotive Headlamp Dynamic Bend Light Rotation Control
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Solution Overview
Problem
Current headlamp systems for automobiles do not effectively enhance visibility when driving on curved roads, as they primarily rely on fixed light patterns and do not adapt to changing driving directions or speeds, leading to reduced visibility for drivers approaching curves.
Innovation Solution
A headlamp apparatus with dynamic bend lights (DBLs) that utilize a combination of GPS, speed sensors, and a controller to rotate the lights according to the driving path and speed, ensuring visibility is maintained by adjusting the light direction 3.5 seconds before entering a curve, and adapting to steering wheel angles for precise turns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If fixed light patterns are used in headlamps, then the structure is simple and easy to manufacture, but visibility on curved roads is reduced
Solution Approach 1:
The patent applies dynamics by making the headlamp system adjustable and adaptive rather than fixed. The controller dynamically adjusts the illumination pattern based on real-time driving conditions detected by sensors (steering angle, speed, GPS). This allows the headlamp to adapt to curved roads by rotating the light source or changing the reflector configuration, thereby improving visibility on curves while maintaining a relatively simple base structure that can be manufactured using conventional techniques.
Solution Approach 2:
The patent implements feedback by using sensors to continuously monitor driving conditions (steering wheel angle, vehicle speed, positional data from GPS) and feeding this information back to the controller. The controller then adjusts the headlamp illumination pattern accordingly. This closed-loop feedback system enables the headlamp to automatically adapt to curved roads and other driving conditions, improving visibility without requiring complex manual adjustment mechanisms.
2Illumination intensity
If headlamps do not adapt to driving direction changes, then the system is simple, but visibility when approaching curves is reduced
Solution Approach 1:
The system achieves adaptability through dynamic adjustment mechanisms controlled by a controller that receives real-time data from sensors. The headlamp can change its illumination pattern, rotation angle, or both, based on detected driving conditions such as steering angle and vehicle speed. This dynamic adaptability ensures the headlamp automatically adjusts when approaching curves, improving visibility without requiring the driver to manually intervene.
Solution Approach 2:
The headlamp system performs self-service by automatically detecting and responding to driving conditions without driver input. The sensors continuously monitor the driving environment, and the controller autonomously adjusts the illumination pattern to suit the current situation. This self-adjusting capability eliminates the need for manual headlamp adjustment and ensures optimal visibility adaptability across various driving scenarios.
3Illumination intensity
If dynamic adjustment mechanisms are added to headlamps, then visibility on curved roads is improved, but the device complexity increases
Solution Approach 1:
The patent applies universality by designing a control system that uses existing vehicle sensors (steering angle sensor, speed sensor, GPS) for multiple purposes. These sensors not only serve their primary functions for vehicle control and navigation but also provide data for headlamp adjustment. This multi-functional approach allows the system to achieve adaptive illumination without adding dedicated sensors solely for headlamp control, thereby limiting the increase in device complexity.
Solution Approach 2:
The control functions for the headlamp are merged with the existing vehicle control system. The controller that manages other vehicle functions also controls the headlamp adjustment, and the sensor data is shared across multiple systems. This merging approach allows the dynamic adjustment capability to be integrated into the existing vehicle architecture, reducing the need for separate dedicated components and minimizing the overall increase in device complexity.
Data Source
AI summary
A head lamp apparatus of an automobile and a method of controlling the same light a curved road by rotating one of a left DBL and a right DBL to the left or right according to a relative distance reflecting a driving speed of the automobile, not an absolute distance from a driving position of the automobile before the automobile enters the curved road on a driving path.