Shape-Changing Vehicle Controls for Tactile Mode Feedback
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Solution Overview
Problem
Existing vehicle control systems require drivers to look away from the road to determine the current mode and available actions, compromising attention to driving conditions due to the need to visually check user interfaces for input compatibility.
Innovation Solution
A vehicle control system that includes actuators and a processor to change the shape of vehicle components, such as an armrest or knob, based on mode changes, allowing users to determine the current mode and possible inputs through tactile feedback without looking at a screen.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a visual user interface (screen) is used to display mode information and input options, then information presentation is improved, but driver attention to road conditions deteriorates
Solution Approach 1:
The system segments information presentation across multiple sensory channels: tactile feedback through shape-changing surfaces and auditory feedback through voice commands, separating visual information display from driving attention requirements
Solution Approach 2:
The patent replaces visual display mechanisms with tactile and auditory feedback mechanisms, substituting the mechanical/optical screen interface with shape-memory alloy actuators and audio output systems
2Ease of operation
If a touch screen is used for vehicle control operations, then ease of operation is improved, but driver attention to road conditions deteriorates
Solution Approach 1:
The system divides the user interface into tactile input zones on the steering wheel and auditory confirmation channels, separating control operations from visual attention requirements
Solution Approach 2:
The steering wheel acts as an intermediary device between the driver and vehicle control systems, providing tactile feedback and input capabilities without requiring visual engagement with traditional screens
3Adaptability or versatility
If multiple input methods are supported across different modes, then adaptability is improved, but device complexity increases
Solution Approach 1:
The steering wheel integrates multiple input methods (tactile buttons, rotary controls, touch-sensitive surfaces) into a single universal interface that adapts to different vehicle modes without requiring separate control devices
Solution Approach 2:
The system dynamically reconfigures the tactile feedback patterns and available input methods based on the current vehicle mode, allowing the interface to adapt its complexity to match operational requirements
Data Source
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AI summary
A system for changing the shape of a vehicle component includes one or more actuators coupled to the vehicle component and a processor coupled to the one or more actuators. The processor is configured to determine that a software application has switched from a first mode to a second mode and cause the one or more actuators to transition a surface of the vehicle component from a first shape associated with the first mode to a second shape associated with the second mode.