Steering Wheel Gesture Sensing for Grip-Preserving Vehicle Control
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Solution Overview
Problem
Existing vehicle control systems require drivers to loosen or remove their grip from the steering wheel to access controls, which can be inconvenient and dangerous, and voice activation systems have limitations such as difficulty in learning phrases and noise interference.
Innovation Solution
The system uses sensors integrated into the steering wheel to detect gestures made by the driver's hands, allowing for intuitive control of vehicle systems without requiring the driver to loosen their grip or use predetermined controls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If controls are placed on or near the steering wheel, then ease of operation is improved, but driver distraction increases due to mental tracking of button locations
Solution Approach 1:
The patent replaces traditional mechanical button controls with a gesture recognition system using sensors (capacitive, optical, or other) that detect hand movements and gestures in the driver's field of view. This substitution eliminates the need for physical buttons on the steering wheel while maintaining ease of operation through intuitive gestures, thereby reducing driver distraction.
Solution Approach 2:
The system introduces an intermediary layer between the driver and vehicle controls: a gesture recognition system that translates hand movements into control commands. This intermediary allows drivers to operate controls without directly interacting with physical buttons, reducing the need for mental tracking of button locations while maintaining operational ease.
2Ease of operation
If voice activation systems are used, then hands-free operation is achieved, but system reliability decreases due to noise interference and phrase recognition limitations
Solution Approach 1:
The patent replaces voice activation systems with gesture-based control systems that use sensors to detect hand movements. This substitution maintains hands-free operation benefits while improving reliability by eliminating voice recognition issues related to noise interference and phrase interpretation, as gestures provide more precise and unambiguous control inputs.
3Loss of information
If controls are placed away from the steering wheel, then driver distraction is reduced, but ease of operation deteriorates as drivers must remove grip from the wheel
Solution Approach 1:
The patent replaces physical controls located away from the steering wheel with a gesture recognition system that operates within the driver's field of view and reaches. This allows drivers to maintain their grip on the steering wheel while accessing all vehicle controls through gestures, simultaneously improving ease of operation and reducing driver distraction.
4Ease of operation
If thumb-actuated controls are used, then ease of operation is improved for basic functions, but adaptability decreases for complex vehicle systems
Solution Approach 1:
The patent implements a universal gesture recognition system that can handle both simple and complex vehicle control functions through a single interface. The system recognizes various gesture types (taps, swipes, circles, pinches) and maps them to different control functions, providing both the simplicity of thumb-actuated controls for basic functions and the versatility needed for complex infotainment and navigation systems.
Solution Approach 2:
The system employs dynamic gesture recognition that adapts to different control contexts. Simple gestures (single tap) trigger basic functions while more complex gestures (multi-touch patterns, circular motions) activate advanced features. This dynamic approach allows the same gesture interface to provide both simplicity for routine operations and adaptability for complex vehicle systems.
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 enables drivers to control vehicle systems, such as entertainment, navigation, and communication, in a hands-free and intuitive manner, reducing driver distraction and improving safety.
Implementation Method 1
sensors integrated into the steering wheel to detect gestures made by the driver's hands
Implementation Method 2
sensors integrated into the steering wheel to detect gestures made by the driver's hands
Data Source
AI summary
Sensors disposed on a steering wheel sense contact of a user's hands with the steering wheel. The sensors are arranged into several zones that wrap around the steering wheel. Each zone is adjacent to at least two other zones. Data from the sensors is continuously received by input/output circuitry. Control circuitry determines a time series of pressures for each zone based on the data from the sensors. The time series of pressures for the zones are stored in a data structure that is looped. The time series of pressures of the data structure is compared to a time series of pressures of a reference data structure. An action to control at least one element of the vehicle is performed based on the comparison. In some embodiments, the steering wheel includes handlebars and the sensors are disposed in handlebar grips.