Vehicle Display Knob With Vibration Sensor for Analog Control
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Solution Overview
Problem
Existing vehicle display systems lack intuitive and convenient analog input methods for operations like volume control and air conditioning adjustments, particularly in a touch screen environment.
Innovation Solution
A display apparatus for vehicles that incorporates a rotatable knob with vibration sensors and a controller to determine rotational direction and amount, allowing for analog operation without the need for wires or signal lines, and includes a triangulation algorithm for multiple knobs and touch recognition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a touch display apparatus is applied to a vehicle cluster or AVN, then the user interface becomes more modern and customizable, but the intuitive and convenient analog input method for volume control, frequency control, and air conditioning is lost
Solution Approach 1:
The patent combines a traditional knob (mechanical input device) with a touch display screen, merging the advantages of both analog and digital interfaces. The knob is integrated into the touch display apparatus, allowing users to benefit from both the intuitiveness of mechanical rotation and the versatility of touch interaction.
Solution Approach 2:
The knob is designed to serve multiple functions: it can be rotated for analog input (volume, frequency, temperature control), pressed for selection, and integrated with the touch display for graphical feedback. This multi-functionality resolves the contradiction by providing both analog convenience and digital adaptability through a single device.
2Ease of operation
If a knob is integrated into a touch display apparatus, then analog operation is restored, but the device complexity increases due to additional components like vibration sensors and controllers
Solution Approach 1:
The patent replaces traditional mechanical connection methods (wires, signal lines) with wireless communication technology. The knob communicates with the controller wirelessly, eliminating the need for physical connections and reducing mechanical complexity while maintaining analog operation capability.
Solution Approach 2:
The vibration sensor acts as an intermediary between the knob and the controller. It detects the rotational movement of the knob and converts it into signals that the controller can process, simplifying the overall system architecture by providing a dedicated sensing mechanism that bridges the mechanical and electronic domains.
3Adaptability or versatility
If multiple knobs are implemented in the display apparatus, then more functions can be controlled, but it becomes difficult to identify which knob is being operated
Solution Approach 1:
The patent uses visual indicators (such as color changes or lighting) on the knobs to help users identify which knob is currently being operated or selected. This visual feedback mechanism resolves the identification difficulty by providing clear, intuitive cues about the active control element among multiple knobs.
Solution Approach 2:
The system provides immediate feedback when a knob is touched or rotated, such as visual indicators on the display or the knob itself. This feedback mechanism helps users understand which knob is active and what function it controls, making it easier to operate multiple knobs without confusion.
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
Enables intuitive analog operation on a vehicle display screen, enhancing user convenience and eliminating the need for physical connections, while allowing for precise control of vehicle functions through the application of vibration signals.
Implementation Method 1
A vibration sensor senses a vibration and outputs a vibration signal
Data Source
AI summary
A display apparatus for a vehicle includes a screen on which an image is displayed. A projector projects the image to the screen, and a knob is rotatably disposed at one side of the screen. A vibration sensor senses a vibration and outputs a vibration signal. A controller determines a rotational direction and a rotational amount of the knob based on the vibration signal output from the vibration sensor.