Adaptive Haptic Feedback for Touchscreen Control
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Solution Overview
Problem
The increasing complexity of motor vehicle controls due to advanced technologies leads to driver distraction and error, as touchscreens lack direct feedback, causing ambiguity and attention overload.
Innovation Solution
A control device with a touch surface and haptic and/or audio feedback module that adjusts feedback parameters based on the distance to a target control zone, guiding the user without diverting their gaze from the road.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If touchscreens are used to replace conventional buttons, then the number of functions can be increased and the interface can be customized, but direct feedback is lost causing ambiguity and driver distraction
Solution Approach 1:
The patent implements haptic feedback through vibration motors and audio feedback through speakers to provide tactile and auditory responses when users interact with the touchscreen. This compensates for the loss of mechanical feedback from conventional buttons, reduces ambiguity in user actions, and maintains driver awareness without requiring visual attention on the screen.
2Adaptability or versatility
If more buttons are added to the dashboard, then more functions can be controlled, but complexity and cognitive load increase leading to driver distraction
Solution Approach 1:
The patent implements a touchscreen interface that can display and control multiple functions through a single versatile device. The screen can be configured to show different controls for navigation, media, climate, and other vehicle functions, replacing numerous physical buttons with a reconfigurable digital interface that adapts to different driving contexts.
Solution Approach 2:
The touchscreen interface dynamically adjusts its display based on driving conditions, time of day, and active functions. The system can change the visibility and accessibility of different controls, providing relevant information at appropriate times while minimizing distractions during critical driving moments.
3Reliability
If haptic and audio feedback are added to touchscreens, then feedback is provided to reduce ambiguity, but visual and auditory pathways may be overloaded
Solution Approach 1:
The haptic feedback is localized to the specific area of the touchscreen where the user makes contact, providing precise tactile confirmation without requiring full-screen vibration. The audio feedback is also contextualized to relate specifically to the function being accessed, providing relevant information without creating generic noise that would overload the auditory channel.
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 interaction by providing intuitive and customizable feedback, reducing ambiguity and attention diversion, thus improving safety and usability during driving.
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 motor vehicle control device comprising: a touch surface (2) for detecting contact from a finger of a user and locating the contact on the touch surface (2); and a haptic and/or audio feedback module (4) configured such as to cause the touch surface (2) to vibrate and/or such as to generate audio feedback to the user, in response to contact with the touch surface (2), characterized in that said motor vehicle control device comprises a control unit (5) configured such as to control the haptic and/or audio feedback module (4) such that the value of at least one parameter of the haptic and/or audio feedback depends on the distance (D) between the location (P1) of the finger of the user and a target area (Zc) for controlling the touch surface (2). The invention also relates to a control method.