Capacitive Slidable Button Assembly for Precise Progressive Control
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Solution Overview
Problem
Existing button control systems with sensors suffer from poor positioning and sensitivity, particularly in progressive adjustment controls like lighting dimming and volume control.
Innovation Solution
A slidable button assembly with a sensor module comprising multiple sets of capacitive sensors arranged at equal pitches, connected to a circuit board, enhances sensitivity through central position calculation using an interpolation algorithm.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensors are arranged at two ends of the button to achieve control, then basic control function is realized, but positioning and sensitivity of progressive adjustment control are poor
Solution Approach 1:
The button is divided into multiple sensing zones with sensors arranged at different positions (two ends and middle position), allowing independent detection of touch locations. This segmentation enables precise positioning by identifying which zone is activated, resolving the contradiction between measurement precision and device complexity.
Solution Approach 2:
The patent transitions from one-dimensional end-point sensing to multi-dimensional spatial sensing by adding middle position sensors and potentially multiple layers. This dimensional expansion allows accurate localization of touch position along the button's length, improving positioning precision without excessive complexity.
2Measurement precision
If sensors are arranged at two ends of the button, then control function is achieved, but sensitivity of progressive adjustment control is insufficient
Solution Approach 1:
By segmenting the button into multiple sensing zones with dedicated sensors, the system achieves higher sensitivity in detecting small positional changes. Each sensor monitors a specific zone, enabling precise detection of progressive adjustments with minimal sensor quantity.
Solution Approach 2:
Different regions of the button are equipped with sensors optimized for their specific functions - end sensors for boundary detection and middle sensors for progressive adjustment detection. This local quality optimization enhances overall sensitivity without requiring uniform sensor distribution, reducing the total number of sensors needed.
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
Improves positioning and sensitivity in progressive adjustment controls by accurately tracking touch positions and slide gestures.
Implementation Method 1
The sensor module comprises a plurality of sets of sensor assemblies that are successively arranged and spaced apart from each other, each of the sets of sensor assemblies including a plurality of capacitive sensors
Data Source
AI summary
The present disclosure provides a slidable button assembly and an electronic device. The slidable button assembly includes a support frame, a circuit board secured onto a side of the support frame, a sensor module secured onto a side, away from the support frame, of the circuit board, and a button secured onto a side, away from the circuit board, of the sensor module; wherein the sensor module comprises a plurality of sets of sensor assemblies that are successively arranged and spaced apart from each other, each of the sets of sensor assemblies comprising a plurality of capacitive sensors that are successively arranged and spaced apart from each other, the capacitive sensors being electrically connected to the circuit board. The slidable button assembly according to the present disclosure improves the positioning and sensitivity of progressive adjustment control of the button.