Metal Panel Touch Sensing With Elastic Pressure Transfer
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing touch sensors struggle to accurately detect touch manipulations on metal panels with thick thicknesses, especially when the panels are formed of materials that can deform under pressure, leading to malfunctions due to careless user interactions.
Innovation Solution
A metal touch sensing apparatus is developed, featuring a touch sensor directly contacting the rear surface of a metal panel with an elastic member generating force to push the sensor toward the panel, enhancing sensitivity by increasing the base voltage and improving adhesion, allowing detection of small pressure changes and preventing simultaneous recognition of multiple touch parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a touch sensor is used on a thick metal panel, then the panel can endure foam pressure and provide structural strength, but the touch sensor cannot accurately detect touch manipulation due to panel deformation and pressure loss
Solution Approach 1:
A foam layer is introduced as an intermediary substance between the metal panel and the touch sensor. The foam transmits touch pressure from the panel to the sensor while compensating for panel deformation, enabling accurate touch detection on thick metal panels that would otherwise deform under pressure and prevent reliable sensor operation
2Strength
If the metal panel thickness is increased to endure foam pressure, then structural integrity is improved, but touch sensitivity decreases due to pressure distribution
Solution Approach 1:
The foam layer provides localized pressure concentration at the touch point while the thick panel maintains overall structural integrity. This local quality differentiation allows the panel to be thick and strong overall while still transmitting sufficient localized pressure for sensitive touch detection
3Device complexity
If a conventional touch sensor is used without special configuration, then device complexity is low, but the sensor cannot sense small pressure changes on metal panels
Solution Approach 1:
The foam's compressibility parameter is utilized to amplify small pressure changes from the metal panel. The foam's elastic properties transform subtle panel deformations into measurable sensor signals, enabling detection of small pressure changes without complex sensor configurations
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 improves touch recognition performance, prevents malfunctions by ensuring accurate detection of touch manipulations even on thick metal panels, and allows users to intuitively adjust touch sensitivity, reducing recognition errors and enhancing user convenience.
Implementation Method 1
an elastic member for generating force which pushes the touch sensor toward the panel
Data Source
AI summary
Provided is a metal touch sensing apparatus in which recognition performance thereof is improved, a plurality of touch parts are successively manipulated to enter into a specific mode, thereby preventing a refrigerator from being malfunctioned, and touch sensitivity of the refrigerator to be touched for the manipulation is visually adjusted, and a home appliance including the touch apparatus and a method for controlling the same.