One-Pedal Stop-Hold Display Control for Driver State Awareness
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Solution Overview
Problem
Drivers using vehicles equipped with one-pedal functions may feel anxious about whether the vehicle is in a held stop state due to the lack of clear indication when the braking force is engaged, as they are not pressing the brake pedal.
Innovation Solution
A control apparatus that includes a travel controlling unit for executing one-pedal functions and an output controlling unit to display indicators on a vehicle's display device, indicating when the one-pedal function is enabled and when the vehicle's stopped state is being held by the braking force, enhancing driver awareness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the one-pedal function is enabled to control both driving force and braking force according to accelerator pedal operation, then the ease of operation is improved, but the driver's awareness of the vehicle state deteriorates due to lack of clear indication when stop hold is being performed
Solution Approach 1:
The patent implements visual feedback through display devices that show indicators to the driver. When the one-pedal function is enabled and the vehicle is in a held stop state, the system displays a first indicator showing the one-pedal function status and a second indicator showing the held stop state, providing continuous feedback about the vehicle's operational state without requiring the driver to feel or guess the current mode.
Solution Approach 2:
The patent utilizes color changes in display indicators to communicate vehicle state. The display device shows different visual indicators (potentially with different colors or illumination states) to represent whether the one-pedal function is enabled and whether the vehicle is in a held stop state, making the information immediately recognizable to the driver through visual perception.
2Ease of operation
If the stopped state is held by braking force without brake pedal operation, then the ease of operation is improved, but the reliability of state indication worsens because the driver cannot physically sense the braking engagement
Solution Approach 1:
The system provides visual feedback through indicators on the display device that clearly show when the held stop state is active. This compensates for the lack of physical feedback the driver would normally receive from brake pedal operation, ensuring the driver can reliably determine the vehicle state through visual information rather than tactile sensation.
Solution Approach 2:
The display device acts as an intermediary between the vehicle's control systems and the driver. It translates the internal state (braking force application, one-pedal function status) into visible indicators that the driver can perceive, bridging the gap between the automated system's actions and the driver's awareness.
3Loss of information
If visual indicators are displayed to notify the driver of the vehicle state, then the driver awareness is improved, but the device complexity increases due to additional display control functions
Solution Approach 1:
The control apparatus integrates multiple functions into a single system. The same control apparatus that manages the one-pedal function and braking control also manages the display output, creating a multi-functional system that reduces overall complexity compared to having separate dedicated systems for vehicle control and driver information display.
Solution Approach 2:
The patent combines the travel controlling unit and output controlling unit into a single control apparatus. This merging of functions allows the system to coordinate vehicle control and information display through a unified control structure, reducing the complexity that would arise from multiple independent control systems needing to communicate with each other.
Data Source
AI summary
A control apparatus for controlling a vehicle includes a travel controlling unit for executing a one-pedal function for controlling both a driving force and a braking force of the vehicle according to an operation amount of an accelerator pedal, and an output controlling unit capable of displaying, on a display device of the vehicle, a first indicator indicating that the one-pedal function is enabled and a second indicator indicating that a stopped state of the vehicle is being held by a braking force of the one-pedal function.