Driving Function Transition Control With Set Speed Carryover
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Solution Overview
Problem
The challenge is to safely increase driver comfort when transitioning between different driving functions in vehicles, particularly during automated longitudinal guidance, as existing systems do not effectively manage changes in a way that balances safety and convenience.
Innovation Solution
A device and method that detect the intention to change driving functions using a user interface, allowing for automatic adoption of the set speed from the first function to the second, while preventing automatic adoption in exceptional cases to ensure safety and comfort, by considering current driving speed and predefined exceptional changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If automatic adoption of set speed is implemented during driving function changes, then driver comfort is improved, but safety may be compromised in exceptional cases
Solution Approach 1:
The system dynamically adjusts the speed adoption behavior based on the type of driving function transition. For normal transitions between compatible functions, automatic speed adoption is enabled for comfort. For exceptional transitions that may compromise safety, the system dynamically switches to manual speed confirmation mode, thus adapting the control strategy to the specific transition context.
Solution Approach 2:
The system changes the operational parameter of speed adoption (automatic vs. manual) based on the driving function transition type. By identifying exceptional cases where automatic speed adoption may be unsafe, the system modifies the speed control parameter from automatic to manual confirmation, resolving the contradiction between comfort and safety.
2Reliability
If manual confirmation of set speed is required during driving function changes, then safety is improved, but driver convenience deteriorates
Solution Approach 1:
Instead of applying manual confirmation universally, the system applies it only locally to specific exceptional cases where safety concerns exist. For the majority of normal transitions, automatic speed adoption remains enabled, thus maintaining convenience while providing targeted safety enhancements only where needed.
Solution Approach 2:
The system applies manual confirmation partially only when necessary for safety, rather than excessively requiring it for all transitions. This partial action approach maintains driver convenience for normal operations while providing enhanced safety oversight only for exceptional cases.
3Ease of operation
If the system automatically manages speed transitions, then operational simplicity is improved, but system complexity increases to handle exceptional cases
Solution Approach 1:
The system performs self-assessment of the driving function transition type and automatically determines whether manual or automatic speed confirmation is needed. This self-service capability eliminates the need for complex external judgment logic, maintaining operational simplicity while handling exceptional cases through the control unit's inherent decision-making algorithms.
Data Source
AI summary
An apparatus for controlling a change between different driving functions for the at least partially automated longitudinal guidance of a vehicle is provided. The apparatus is designed to detect that it is intended to change from a first driving function to a different second driving function. The apparatus is also designed to automatically adopt a set speed from the first driving function for the second driving function for the at least partially automated longitudinal guidance.