Dynamic Vehicle Keypad Icon Sizing for Compact Access
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Solution Overview
Problem
Conventional vehicle input devices, such as keypads and displays, face challenges in accommodating varying use conditions and providing secure, user-friendly access to vehicles, particularly in exterior environments where mechanical switches may not be optimal.
Innovation Solution
A vehicle input device featuring a touchscreen with an array of capacitive proximity sensors and a display that dynamically adjusts the size and separation of virtual input icons based on user interaction, allowing for enhanced sensitivity and security through capacitive sensing technology.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the size of virtual input icons is increased to improve ease of operation, then the device occupies more space and becomes less compact
Solution Approach 1:
The patent implements dynamic icon sizing where the controller adjusts the size of virtual input icons based on detected user interaction. When a user approaches or touches the device, icons enlarge to facilitate easier selection; when no interaction is detected, icons return to their smaller default size. This dynamic adaptation resolves the contradiction by providing large icons only when needed for operation, maintaining compactness during non-use periods.
2Ease of operation
If the separation distance between virtual input icons is increased to improve ease of operation, then the device occupies more space
Solution Approach 1:
The patent dynamically adjusts the separation distance between virtual input icons based on detected user interaction. During active use, icons are spaced farther apart to prevent accidental selections and improve clickability. When inactive, icons are positioned closer together to minimize the device's occupied space. This dynamic spacing strategy resolves the contradiction between operational ease and space efficiency.
3Measurement precision
If capacitive proximity sensors are used to enhance sensitivity and security, then the device complexity increases
Solution Approach 1:
The patent replaces traditional mechanical switch inputs with capacitive proximity sensors that detect user interaction through capacitance changes. This substitution eliminates the need for physical contact mechanisms, reducing mechanical complexity while enhancing sensitivity to user presence and touch. The capacitive sensing technology provides secure, contactless operation with improved measurement precision for detecting user interaction states.
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 provides an intuitive and secure user interface for vehicle access, adapting to user interaction by adjusting icon size and separation, enhancing usability and security while maintaining a compact and discreet design.
Implementation Method 1
A touchscreen having an array of capacitive proximity sensors located on an exterior of a vehicle
Data Source
AI summary
A vehicle keypad device is provided that includes a touchscreen having an array of proximity sensors located on an exterior of a vehicle, a keypad display displaying virtual input icons proximate the proximity sensors, and a controller for dynamically adjusting size of the displayed virtual input icons based on a touch event.