Electric Field Gesture Sensing for Vehicle Control
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Solution Overview
Problem
Conventional motion gesture sensing technologies for vehicle-mounted units fail to form an appropriate sensing space, leading to unreliable gesture recognition and increased risk of vehicle accidents due to driver distraction from operating switches, and result in complex control interfaces and disfigured vehicle interiors.
Innovation Solution
A motion gesture sensing device comprising a sensing board with an electrode pattern that forms an electric field and detects changes in the field, a gesture determination board to analyze user gestures, and a main board to execute corresponding unit functions, integrated with electric field intensifying members to enhance sensing accuracy and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional proximity sensing technologies (optical or capacitive) are used to recognize switch operations, then the sensing range is limited to close proximity near the vehicle-mounted unit, but this requires installing a proximity sensor into each vehicle-mounted unit, increasing device complexity
Solution Approach 1:
The patent applies universality by using a single electric field sensing device that can recognize multiple different gestures (e.g., waving, pointing, circular motions) to control various vehicle-mounted units. This multi-functional approach eliminates the need to install separate proximity sensors in each unit, reducing device complexity while maintaining reliable gesture recognition across different applications
Solution Approach 2:
The patent introduces an electric field as an intermediary medium between the user and vehicle-mounted units. Instead of requiring direct contact or close proximity sensing at each unit, the electric field extends the sensing range to a predetermined distance, allowing gesture recognition without installing sensors in each individual unit
2Ease of operation
If motion gesture sensing is implemented using captured images, then gesture recognition can be performed, but the sensing space cannot be appropriately formed, resulting in unreliable gesture recognition
Solution Approach 1:
The patent replaces the optical/image-based sensing system with an electric field-based sensing system. This substitution creates a well-defined sensing space with measurable physical boundaries determined by the electric field distribution, providing more reliable and consistent gesture recognition compared to image analysis which struggles with defining appropriate sensing zones
Solution Approach 2:
The patent changes the sensing parameter from optical image analysis to electric field measurement. By detecting changes in electric field strength and distribution caused by user gestures, the system achieves more reliable recognition with clearly defined sensing parameters, avoiding the ambiguity inherent in image-based approaches
3Adaptability or versatility
If multiple switches are provided for various vehicle-mounted units, then vehicle quality and convenience are improved, but the driver's attention is distracted from driving to find and operate specific switches
Solution Approach 1:
The patent enables the vehicle-mounted units to be controlled through intuitive gesture commands that naturally indicate the desired function. Users can point or gesture toward the desired unit or function, and the system automatically identifies and executes the corresponding operation, eliminating the need for drivers to search through multiple switches and reducing distraction while maintaining full functionality
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
The solution effectively recognizes user gestures to operate vehicle-mounted units without requiring direct switch activation, reducing driver distraction, simplifying control interfaces, and improving the reliability of gesture recognition, thereby enhancing vehicle safety and aesthetics.
Implementation Method 1
a sensing board including an electrode pattern forming a sensing space with an electric field on a front side of the electrode pattern and detecting a change in the electric field in response to a motion of a user in the sensing space
Data Source
AI summary
A motion gesture sensing device and a vehicle-mounted unit manipulation system to which the motion gesture sensing device is applied are proposed, in which a sensing space is formed with an electric field and a change in the electric field according to a motion gesture of an occupant in the sensing space is recognized so as to operate respective functions of vehicle-mounted units.