Adaptive Braking Thresholds for Hazard Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing braking assistance systems struggle to differentiate between hazard and normal braking situations effectively, leading to delayed or inadequate braking responses in emergency situations, as they rely on fixed threshold values for braking pressure and gradient, which do not adapt to dynamic driving conditions.
Innovation Solution
A method that assesses two variables representing driver braking demand, with adaptable threshold values based on instantaneous driving situations, using sensors for vehicle dynamics and environmental data to initiate automated braking interventions, allowing for flexible and reliable operation even in adverse conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If fixed threshold values for braking pressure and gradient are used, then the system structure is simple, but the braking response is delayed or inadequate in emergency situations
Solution Approach 1:
The patent applies the dynamics principle by transitioning from fixed threshold values to dynamically adaptable threshold values that change based on instantaneous driving situations. The control unit continuously adjusts the threshold values for braking pressure and gradient according to real-time sensor data about vehicle speed, engine load, and road conditions, enabling the braking assistance system to respond appropriately to varying emergency scenarios while maintaining system reliability.
2Ease of operation
If fixed threshold values are used for hazard braking recognition, then the system is easy to operate, but it cannot adapt to dynamic driving conditions
Solution Approach 1:
The patent implements feedback by continuously monitoring instantaneous driving situation variables through sensors and using this information to dynamically adjust threshold values. The control unit receives feedback from sensors measuring vehicle speed, engine load, and road conditions, then automatically adapts the braking pressure and gradient thresholds accordingly, maintaining ease of operation while achieving adaptability to varying driving conditions.
3Reliability
If automated braking intervention is initiated based on two variables exceeding thresholds, then braking effectiveness is improved, but the system complexity increases
Solution Approach 1:
The patent applies parameter changes by monitoring two distinct variables (braking pressure and braking gradient) and initiating automated braking intervention when both exceed their respective dynamically adjusted threshold values. This multi-parameter approach improves braking effectiveness by reducing false activations while maintaining manageable system complexity through the use of clear threshold-based decision logic that adapts to driving conditions.
Data Source
AI summary
A method for operating a braking assistance system of a vehicle, wherein the braking assistance system assists a braking of the vehicle by a vehicle braking device in the event of a hazard braking. To differentiate between the hazard braking and a normal braking, at least two variables, representing a braking demand of a driver of the vehicle, are ascertained and a threshold value is established for each variable wherein hazard braking is recognized when at least the two variables exceed their particular threshold value, whereupon an automated braking intervention by the braking assistance system is initiated with the aid of the vehicle braking device. Furthermore, at least one driving-situation variable representing the instantaneous driving situation of the vehicle is ascertained and the at least two threshold values are changed depending on the at least one driving-situation variable.