Vehicle Touchscreen Mode Switching for Driver Safety
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Solution Overview
Problem
Existing motor vehicle operating devices struggle to prevent driver distraction while allowing passenger use of touch-sensitive screens, as current solutions either require voice commands or additional circuit complexity, and fail to seamlessly transition between input modes based on user intent and vehicle speed.
Innovation Solution
A sensor device detects user approaches to a touch-sensitive display, distinguishing between driver and passenger sides to deactivate the on-screen keyboard for drivers and maintain its functionality for passengers, offering alternative input methods like handwriting or voice control when driving, and automatically switching between operating modes based on detected user intent and vehicle speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If an on-screen keyboard is provided for character string input, then input efficiency is improved, but driver distraction increases making operation unsafe
Solution Approach 1:
The operating device dynamically changes its operational state based on detected conditions. When driver distraction is detected through sensor data (proximity, gaze direction, head position), the system transitions from allowing keyboard input to blocking it, thereby adapting the safety constraints in real-time while maintaining input functionality when safe
Solution Approach 2:
A sensor device acts as an intermediary between the driver and the operating device. The sensors detect driver state and position, and this information mediates whether the on-screen keyboard should be accessible, creating a safety layer that filters when input operations are permitted
2Reliability
If voice recognition is used to distinguish driver from passenger input, then driver distraction is reduced, but the system requires voice commands which limits input flexibility
Solution Approach 1:
The operating device supports multiple input methods (voice commands, on-screen keyboard, physical buttons) and can switch between them based on detected user identity and safety conditions. This multi-functionality ensures that the system adapts to different user needs while maintaining safety constraints
3Ease of operation
If additional circuit complexity is added to enable passenger-side access to blocked functions, then passenger usability is improved, but device complexity increases
Solution Approach 1:
The system uses the existing sensor device and processing capabilities to automatically determine user identity and intent based on position and approach patterns. No additional dedicated passenger control circuits are needed, as the existing system self-adapts to serve both driver and passenger needs through intelligent detection
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
This solution minimizes driver distraction by disabling the on-screen keyboard during driving while allowing passenger use, providing seamless input transitions and reducing circuit complexity, ensuring safe operation by maintaining essential functionality without visual or auditory diversion from the road.
Implementation Method 1
a sensor device (18) is provided and set up to detect an approach of an object to the display device (14)
Data Source
Figure 1
AI summary
The invention relates to an operating device (10) for a motor vehicle (1), having a touch-sensitive display apparatus (14) and a control apparatus (13), which is configured, in an operating mode (B1), to display on the display apparatus (14) a screen keyboard (15) for receiving a character sequence from a user. A driver (3) is not to operate the on-screen keyboard (15) during a journey. According to the invention, a sensor apparatus (18) is configured to detect an approach of an object (5) to the display apparatus (14), a distinction being drawn between a driver approach from a predetermined driver side (19) and a passenger approach from a passenger side (20) opposite the driver side (19), and for the control apparatus (13) to be configured to deactivate the operating mode (B1) in the event of a detected driver approach of the object (5) and, instead, to activate an alternative operating mode (B2) that is different from the operating mode (B1).