Steering Wheel Light Band for Automated Drive Takeover Countdown
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Solution Overview
Problem
Vehicles engaged in automated driving cannot operate under all road and environmental conditions, requiring drivers to take over control before the end of an automated section, which can be overlooked if not monitored, leading to safety concerns due to distractions.
Innovation Solution
A steering wheel display with a light band structure that emits a variable length of light to intuitively indicate the remaining distance to the end of automated driving, transitioning from blue to red or flashing to alert the driver, integrated with hands-on detection to confirm take-over.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If automated driving control is implemented, then driving automation level increases, but driver awareness of remaining automated section decreases leading to safety risks
Solution Approach 1:
The steering wheel display is segmented into multiple light-emitting elements arranged in a light band structure. Each element can be independently controlled to emit light, creating a visual representation of the remaining automated driving distance. This segmentation allows the system to convey continuous information through discrete visual units, maintaining driver awareness while preserving automated driving functionality.
Solution Approach 2:
The light band display on the steering wheel serves as an intermediary between the automated driving system and the driver. It translates abstract remaining distance data into intuitive visual signals that the driver can perceive at a glance, bridging the gap between automated control and driver awareness without requiring constant monitoring.
2Loss of information
If optical display on instrument cluster is used, then information about remaining distance is provided, but driver may overlook the display when distracted
Solution Approach 1:
The display is positioned on the steering wheel at the same visual level and location where the driver's hands naturally rest and where attention is already focused during normal driving. This creates an equipotential zone where information is presented without requiring additional visual search or cognitive effort, making it equally accessible whether the driver is attentive or momentarily distracted.
Solution Approach 2:
The information is transferred from the traditional two-dimensional instrument cluster plane to the three-dimensional steering wheel surface. The light band structure wraps around the steering wheel rim, utilizing the radial dimension to present information in a format that is peripheral to the driving task rather than competing with it for central attention.
3Loss of time
If countdown display is provided, then driver is prepared for take-over, but transition comfort decreases when driver is distracted
Solution Approach 1:
The light band display continuously provides remaining distance information without requiring the driver to actively query or interpret complex data. The visual representation updates automatically as the vehicle approaches the end of the automated section, serving the driver's awareness needs passively while maintaining natural driving behavior and comfort.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances driver awareness and safety by providing a clear, intuitive countdown of the remaining automated driving time, ensuring a smooth transition to manual control and reducing the risk of missed warnings.
Implementation Method 1
The steering wheel display has a light band structure which, in dependence on a current position of the motor vehicle, emits a length of light in a defined emitted light color
Data Source
AI summary
A driving system for an automated drive for a motor vehicle includes a steering wheel display with a lighting strip structure. The lighting strip structure of the steering wheel display is luminous in a defined lighting color for a duration which can be modified according to the actuation. The driving system is designed to control the steering wheel display such that the lighting strip structure is luminous in the lighting color over a starting length during the automated drive. Upon approaching an end of the automated drive lying ahead, the driving system determines that the vehicle has approached an end point of the automated drive lying ahead in such a manner that a specified approach condition has been satisfied. In response thereto, the steering wheel display is actuated such that the lighting strip structure is luminous in the lighting color with a successively decreasing length starting from the starting length as the distance to the end point of the automated drive decreases successively in order to prepare the driver to completely or at least partly take over control of the vehicle again.