Steering Wheel Assembly Pressure-Sensitive Input Control
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Solution Overview
Problem
Current steering wheel assemblies require drivers to remove their hands to manipulate vehicle functionalities, leading to distractions and potential unintentional system actuations due to mechanical switches.
Innovation Solution
A steering wheel assembly with pressure-sensitive components, such as piezoelectric switches or capacitive arrays, integrated into the steering housing to detect user inputs and gestures, allowing for hands-free control with haptic feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If mechanical switches or scroll wheels are used in steering wheel assemblies, then drivers can manipulate vehicle functionalities without removing hands from the steering wheel, but unintentional touches may result in undesired actuation of vehicle systems
Solution Approach 1:
The patent replaces traditional mechanical switches and scroll wheels with pressure-sensitive components (piezoelectric sensors, capacitive sensors) that detect touch gestures through electrical signals rather than mechanical movement. This substitution eliminates the mechanical actuation threshold that causes unintentional triggers while maintaining hands-free control capability. The pressure-sensitive components can distinguish between intentional gestures (with sufficient pressure and specific patterns) and unintentional touches (insufficient pressure or random contact).
Solution Approach 2:
The patent implements feedback mechanisms where the controller receives signals from pressure-sensitive components and can provide haptic feedback through the steering housing. This feedback loop allows the system to confirm intentional user inputs and distinguish them from unintentional touches, thereby preventing undesired system actuation while maintaining ease of operation.
2Adaptability or versatility
If drivers remove hands from steering wheel to manipulate vehicle functionalities on other interfaces, then complete control of all functions is possible, but driver distraction and safety risks increase
Solution Approach 1:
The patent integrates multiple vehicle control functions directly into the steering wheel assembly through pressure-sensitive components. The steering wheel becomes a universal control interface that can handle various functions (climate control, audio, navigation, phone calls) without requiring the driver to move hands to other interfaces. This maintains adaptability while eliminating the harmful distraction effect.
Solution Approach 2:
The steering wheel assembly provides self-service capabilities by incorporating all necessary sensing and control elements directly into the steering housing. Drivers can control vehicle functions through gestures on the steering wheel itself, making the system serve the driver's needs without requiring external interfaces or removing hands from the wheel.
3Ease of operation
If pressure-sensitive components are integrated into the steering housing, then hands-free control with gesture recognition is enabled, but device complexity increases
Solution Approach 1:
The patent merges the pressure-sensitive components, controller, and haptic feedback mechanisms into a single integrated steering housing unit. Rather than adding separate complex systems, the design combines multiple functions (sensing, processing, feedback) into one cohesive structure. This reduces overall system complexity while enabling advanced gesture-based control features.
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 user convenience and safety by enabling intuitive, hands-free control of vehicle functions without visual distraction, reducing the risk of unintended system actuations.
Implementation Method 1
The at least one pressure sensitive component generates electric signals in response to force applied on the steering housing. The at least one pressure sensitive component may include any one of at least one piezoelectric switch
Implementation Method 2
The at least one pressure sensitive component generates electric signals in response to force applied on the steering housing. The at least one pressure sensitive component may include any one of at least one piezoelectric sensor
Implementation Method 3
The at least one pressure sensitive component generates electric signals in response to force applied on the steering housing. The at least one pressure sensitive component may include any one of at least one capacitive array
Data Source
AI summary
A steering wheel assembly includes a steering rim and a steering housing connected to the steering rim. The steering wheel assembly also includes at least one pressure sensitive component disposed within the steering housing. The at least one pressure sensitive component generates electric signals in response to force applied on the steering housing. The at least one pressure sensitive component may include any one of at least one piezoelectric switch, a piezoelectric sensor, and a capacitive array. Further, at least one pressure sensitive component may provide a haptic feedback. Additionally, a Printed Circuit Board (PCB) disposed within the steering housing is electrically connected to the at least one pressure sensitive component. The PCB includes a controller that determines a user input or a gesture made by a user on the steering housing based on the electric signals received from the at least one pressure sensitive component.