Automated-Driving Pedal Mapping for Faster Safe Driver Takeover
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current vehicles with part-automated driving systems lack a reliable mechanism for drivers to quickly and intuitively assume control of the driving pedal, especially after a period of non-operation, which can lead to incorrect pedal operation and safety risks.
Innovation Solution
A pedal system for vehicles with part-automated driving that varies the representation function between pedal actuation and vehicle control parameters based on the degree of automation and specific conditions, allowing for intelligent co-joint control and reducing the risk of incorrect pedal operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the vehicle is driven in an automated manner for a longer period, then the driver becomes more relaxed or sleepy, but the risk of incorrect pedal operation increases
Solution Approach 1:
The system performs preliminary actions by providing haptic feedback and visual indicators before the driver needs to operate the pedals. The haptic feedback unit vibrates the steering wheel to alert the driver in advance, and the display unit shows pedal operation guidance, ensuring the driver is prepared and alert before actual pedal operation is required.
Solution Approach 2:
The patent introduces intermediary elements between the driver and the pedals - specifically, the haptic feedback unit in the steering wheel and the display unit. These intermediaries provide sensory feedback and information to the driver, mediating the transition from automated to manual control and reducing the risk of incorrect pedal operation.
2Ease of operation
If the driver assist function is switched off when the driver intervenes, then the driver has full control, but the take-over time increases
Solution Approach 1:
The system prepares the driver in advance through haptic feedback and visual indicators, so when the driver needs to take control, the transition is smoother and faster. The preliminary alerts ensure the driver is mentally prepared, reducing the actual take-over time while maintaining full driver control.
Solution Approach 2:
The system provides continuous feedback to the driver through the haptic feedback unit and display unit, informing the driver of the automated system's status and intentions. This feedback loop allows the driver to maintain situational awareness and switch to full manual control more quickly when needed.
3Reliability
If the representation function of the pedal actuation is restricted during automated driving, then the risk of incorrect operation is reduced, but the driver's ability to quickly assume control is impaired
Solution Approach 1:
The system provides preliminary alerts through haptic feedback and visual indicators before the driver needs to operate the pedals. This preparation ensures that when the driver does take control, the representation function can be fully activated without delay, thus maintaining both safety and speed.
Solution Approach 2:
The representation function of the pedal actuation is made dynamic - it is restricted during automated driving to prevent incorrect operation, but can be quickly activated or adjusted when the driver takes control. The system adaptively changes the representation function based on the driving mode and driver input, balancing safety and responsiveness.
Data Source
AI summary
A pedal system for a vehicle that is configured to be driven in an at least part-automated manner. The pedal system includes a driving pedal and a brake pedal. The pedal system is allocated a representation function between a pedal actuation and control parameters for the longitudinal control of the vehicle. The pedal system is configured so as, when the vehicle is being operated, to vary the representation function between the pedal actuation and the control parameters for the longitudinal control of the vehicle in dependence upon a variable that represents the degree of automation of the driving mode of the vehicle and at least a first condition for restricting the representation function of the pedal actuation and/or at least a second condition for eliminating the restriction of the representation unction of the pedal actuation.