Automated Driving Activation via Parameter Adjustment
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Solution Overview
Problem
Drivers face frustration and increased control effort when attempting to activate highly automated driving functions due to multiple driving parameter-specific conditions, such as speed and distance, which must be met before the function can be activated, leading to unnecessary and laborious manual adjustments.
Innovation Solution
A driving system with a second driving function that automatically adjusts relevant parameters, like speed and distance, to meet the permissibility range for activating the first highly automated driving function, allowing for seamless transition without additional driver input once conditions are met.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the driver manually adjusts driving parameters to meet activation conditions for highly automated driving function, then the function can be activated, but the control effort and time required increase significantly
Solution Approach 1:
The system performs preliminary adjustments of driving parameters (speed, distance, lane position) to meet the activation conditions for highly automated driving function before the driver attempts activation. This eliminates the need for the driver to manually adjust parameters, as the system has already prepared the vehicle state in advance.
Solution Approach 2:
The driving system automatically monitors and adjusts its own operating parameters to satisfy activation conditions without requiring driver intervention. The system serves itself by autonomously managing parameter adjustments, freeing the driver from control effort.
2Reliability
If multiple driving parameter conditions are required for activation, then safety and appropriateness are improved, but the complexity of activation procedure increases
Solution Approach 1:
The system extracts and separates the complex parameter validation logic from the driver's task. The electronic control unit independently handles monitoring and validation of multiple driving parameters (speed, distance, lane position), leaving the driver with a simple activation command task.
Solution Approach 2:
The electronic control unit acts as an intermediary between the driver's activation request and the actual activation conditions. It mediates by automatically checking all parameter conditions and either enabling or preventing activation, simplifying the interface between driver intent and system requirements.
3Measurement precision
If the driver must continuously monitor and adjust parameters to meet activation conditions, then precise control is achieved, but time and attention are consumed
Solution Approach 1:
The system continuously monitors driving parameters in real-time, maintaining constant awareness of activation conditions without requiring periodic driver checks. This continuous automated monitoring eliminates the time the driver would otherwise spend repeatedly assessing whether conditions are met.
Solution Approach 2:
The system replaces the driver's manual monitoring and adjustment actions with automated electronic sensing and control. Sensors and control algorithms continuously track parameter values, substituting the driver's cognitive and physical efforts with automated electronic systems.
Data Source
AI summary
A driving system for a motor vehicle includes a first driving function for automated driving with automated longitudinal and transverse guidance and a second driving function for automated driving with at least automated longitudinal guidance, or with at least automated transverse guidance. The second driving function has a lower degree of automation than the first driving function. The first driving function is available in a tolerance range. Starting from a driving state with an active second driving function and a value of the driving parameter outside the tolerance range, the driving system changes, when the second driving function is active, the value of the driving parameter in the direction of the tolerance range via automated longitudinal guidance or automated transverse guidance. The driving system then determines that the driving parameter satisfies a criterion with respect to the tolerance range.