Vehicle Touch Surface Haptic Feedback Direction
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Solution Overview
Problem
The increasing complexity of motor vehicle control systems due to numerous functions leads to driver distraction and attention overload, as touchscreens lack direct feedback, potentially causing hazardous situations by ambiguity in user interactions.
Innovation Solution
A control device with a touch surface and haptic and/or audio feedback module that varies parameters based on finger movement direction, simulating different textures and providing distinct feedback in different zones, allowing intuitive interaction without diverting the driver's attention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If touchscreens are used to increase the number of functions, then the multifunctionality and versatility are improved, but the direct feedback and user perception are worsened
Solution Approach 1:
The patent implements haptic feedback mechanisms that generate tactile sensations in response to user interactions with the touchscreen. This provides direct sensory feedback to the user, compensating for the lack of physical button feedback while maintaining the touchscreen's multifunctional capabilities.
Solution Approach 2:
The patent introduces an intermediary haptic feedback layer between the user and the touchscreen interface. This mediator translates digital interactions into tangible sensory experiences, bridging the gap between virtual touchscreen operations and physical user perception.
2Adaptability or versatility
If more buttons are added to the dashboard, then the number of functions is improved, but the complexity and cognitive load are worsened
Solution Approach 1:
The patent employs a touchscreen interface that can display and execute multiple different functions within a single unified interface. This eliminates the need for separate physical buttons for each function, reducing dashboard complexity while maintaining comprehensive functionality through software-based multi-functionality.
3Area of stationary object
If touchscreens are used to reduce physical buttons, then the space and accessibility are improved, but the direct feedback and interaction clarity are worsened
Solution Approach 1:
The patent utilizes mechanical vibration through haptic actuators that generate tactile feedback when the user interacts with the touchscreen. This vibration provides direct physical feedback similar to pressing a mechanical button, enhancing ease of operation by making touchscreen interactions more perceptible and satisfying.
Solution Approach 2:
The patent changes the physical parameters of the touchscreen surface by introducing variable haptic characteristics. The touchscreen can dynamically adjust its tactile properties, such as vibration frequency, amplitude, and pattern, to provide differentiated feedback for different interactions, thereby improving operational clarity without sacrificing space efficiency.
4Loss of information
If haptic feedback is added to touchscreens, then the user feedback is improved, but the visual and auditory pathways are worsened
Solution Approach 1:
The patent applies haptic feedback locally at the specific location of user interaction on the touchscreen. This localized feedback provides necessary tactile information without requiring global visual or auditory attention, allowing drivers to receive feedback through their sense of touch while maintaining focus on the road.
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 perception and orientation on the touch surface, reducing ambiguity and maintaining focus on the road by providing customizable and intuitive haptic and audio feedback, thus mitigating the risks associated with touchscreen interactions in vehicles.
Implementation Method 1
a haptic and/or audio feedback module configured to make the touch surface vibrate
Data Source
AI summary
The invention relates to a control device for a motor vehicle, comprising: a tactile surface (2) for detecting the contact of the finger of a user and the movement of the finger on the tactile surface; and a haptic and/or acoustic feedback module (4) designed to make the tactile surface (2) vibrate and/or to generate an acoustic feedback for the user, in response to contact on the tactile surface (2); characterised in that it comprises a management unit (5) designed to manage the haptic feedback and/or acoustic feedback module (4) in order to generate a haptic and/or acoustic feedback of which at least one parameter of the haptic and/or acoustic feedback varies with the direction of movement of the finger on the tactile surface (2). The invention also relates to a control method.