Lane Guidance Assistant Debounce Control for Changing Conditions
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current lane keeping assist systems have reduced availability due to debounce time requirements that prevent temporary activation of the function, and they do not account for current environmental conditions affecting functionality, leading to inconsistent operation.
Innovation Solution
A method for a lane keeping assist system that continuously determines environmental conditions such as location, weather, time of day, and road type, and adjusts the debounce time accordingly to maintain consistent operation and improve availability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If lane guidance assistant is activated in all weather conditions, then driver assistance is improved, but false detections increase due to rain, snow, or fog affecting sensor signals
Solution Approach 1:
The system changes operational parameters (activation state) based on environmental conditions. When adverse weather is detected, the lane guidance assistant is deactivated or limited, preventing false detections while maintaining functionality in suitable conditions. This dynamic parameter adjustment resolves the contradiction between maintaining assistance and avoiding interference.
Solution Approach 2:
The introduction of an intermediary system (adverse weather detection and evaluation module) mediates between the sensors and the lane guidance assistant. This intermediary evaluates environmental conditions and controls the activation state, filtering out harmful effects before they reach the guidance system.
2Object-affected harmful factors
If lane guidance assistant is deactivated in adverse weather, then false detections are reduced, but driver assistance is lost when it could be safely provided
Solution Approach 1:
The system dynamically adjusts its operational state based on real-time environmental evaluation. Rather than a fixed deactivation rule, the system continuously monitors conditions and adapts the activation state, allowing flexible operation that maximizes availability while minimizing false detections.
Solution Approach 2:
The activation state parameter is changed dynamically based on environmental conditions. The system transitions between different operational modes (fully active, limited, or deactivated) depending on the severity and type of adverse weather, optimizing the balance between assistance and reliability.
3Reliability
If environmental evaluation is added to control activation, then detection reliability is improved, but device complexity increases
Solution Approach 1:
The evaluation module serves multiple functions: detecting adverse weather, determining activation state, and controlling system operation. By making this component multi-functional, the patent avoids adding separate dedicated systems for each function, thereby limiting the increase in overall complexity while achieving reliable activation control.
Data Source
Figure 1
Figure 2
AI summary
The invention relates to a method for operating a lane guidance assistant of a vehicle, comprising the steps of: receiving environmental data which describe an environment of the vehicle; recognizing lane boundaries delimiting a lane in which the vehicle is currently located; automatically performing steering interventions to keep the vehicle in the lane if the lane boundaries are recognized for a predefined debounce time; continually determining environmental conditions, the environmental conditions describing a current location of the vehicle, weather in the environment, a current time of day and/or a road type associated with the lane; and adjusting the debounce time according to the continually determined environmental conditions.