Vehicle Headlight Control Unit Debouncing Adaptation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing high beam assistance systems in vehicles do not effectively adapt the light emission to concealment objects such as vegetation, leading to reduced visibility and delayed switching to high-beam light, especially in areas with dense vegetation or reduced visual range.
Innovation Solution
A method that adjusts the debouncing time or debouncing distance for changing the light emission from low-beam to high-beam based on concealment data, such as vegetation signals, to improve visibility by quickly increasing light intensity when approaching areas with concealment objects, thereby optimizing light distribution for enhanced visibility and comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the debouncing time for changing light emission is extended to reduce unnecessary switching, then system stability improves, but visibility response time deteriorates when approaching concealment objects
Solution Approach 1:
The patent applies dynamics by making the debouncing time variable rather than fixed. The control unit adapts the debouncing time based on detected concealment objects: longer debouncing times are used in open areas to prevent unnecessary switching, while shorter debouncing times are applied when concealment objects are detected to ensure rapid visibility improvement. This dynamic adjustment resolves the contradiction between system stability and response time.
Solution Approach 2:
The patent changes the parameter of debouncing time based on environmental conditions. By detecting concealment objects and adjusting the debouncing time parameter accordingly, the system optimizes both stability and response time. The parameter change allows the system to maintain stability in normal conditions while achieving rapid response when safety-critical concealment objects are present.
2Illumination intensity
If the system quickly switches to high-beam light when detecting concealment objects, then visibility improves, but the risk of unnecessary switching increases
Solution Approach 1:
The patent applies preliminary action by detecting concealment objects in advance and preparing for potential switching. The system uses preliminary detection to assess the need for high-beam light before actual switching occurs. This preliminary assessment reduces unnecessary switching while maintaining readiness to improve visibility when truly needed.
Solution Approach 2:
The patent implements feedback by continuously monitoring the environment for concealment objects and using this information to adjust switching decisions. The feedback mechanism evaluates whether detected objects truly warrant high-beam activation, thereby improving switching accuracy and reducing false positives while maintaining visibility when necessary.
3Illumination intensity
If the debouncing time is shortened to improve visibility response, then visibility improves, but system stability deteriorates due to frequent switching
Solution Approach 1:
The patent changes the debouncing time parameter dynamically based on environmental context. Rather than using a uniformly short debouncing time that would cause frequent switching, the system adjusts the parameter to be short only when concealment objects are detected and long otherwise. This resolves the contradiction by applying short debouncing time selectively to improve visibility only when necessary.
Solution Approach 2:
The patent applies dynamics by making the debouncing time adaptive rather than static. The control unit dynamically adjusts the debouncing time based on real-time detection of concealment objects, enabling the system to achieve rapid visibility response when needed while maintaining stability during normal operation. This dynamic behavior prevents the frequent switching that would result from a permanently short debouncing time.
Data Source
AI summary
A method for setting a characteristic of a light emission of at least one headlight of a vehicle, in which the method includes reading in concealment data which represent at least one property of at least one concealment object situated adjacent to a roadway in surroundings of the vehicle. In addition, the method includes ascertaining a distance between the vehicle and a segment of the roadway situated in the forward travel direction of the vehicle, adjacent to the at least one concealment object, using the concealment data. Moreover, the method includes adapting a waiting time period and/or waiting distance for changing the characteristic of the light emission from a first characteristic to a second characteristic as a function of the ascertained distance.