Tactile-Node Glove for Precise Touchscreen Use and Object Sensing
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Solution Overview
Problem
Existing protective gloves, particularly those with conductive patches for touchscreen interaction, impair a user's ability to accurately feel objects and make precise selections due to reduced tactile feedback and sensory contact, and prevent the use of fingernails for manipulation.
Innovation Solution
A glove with integrated tactile nodes and tactile touchscreen selectors that provide enhanced tactile feedback through arrays of rods extending perpendicular to the surface, allowing precise interaction with touchscreens and improved sensory perception of external objects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fabric glove is used to protect the user's hands, then protection against cold and fire is improved, but the user's ability to feel objects and manipulate external components is reduced
Solution Approach 1:
The glove is divided into multiple functional layers: an outer protective layer (Nomex fabric) for fire and cold protection, and an inner conductive layer with capacitive sensors for tactile feedback and touchscreen interaction. This segmentation allows each layer to specialize in its function without compromising the other.
Solution Approach 2:
A conductive layer acts as an intermediary between the user's skin and the external environment. This layer includes capacitive sensors that detect touch and pressure, transmitting tactile information to the user while maintaining the protective barrier of the outer glove layer.
2Adaptability or versatility
If a conductive patch is added to the glove to enable touchscreen interaction, then capacitive touch screen compatibility is improved, but tactile feedback and pressure sensing capability is reduced
Solution Approach 1:
The conductive patch is merged with the glove's fabric structure, integrating the touchscreen interface directly into the glove material. This integration allows the same conductive elements to serve both as touchscreen controllers and as tactile feedback sensors, eliminating the need for separate components.
Solution Approach 2:
The conductive layer performs multiple functions: it enables capacitive touchscreen interaction, provides tactile feedback to the user, and senses pressure magnitude. This multi-functionality resolves the contradiction by making the same element beneficial for both touchscreen compatibility and tactile feedback.
3Ease of operation
If the conductive patch is made thinner to improve flexibility, then ease of movement is improved, but the structural integrity and sensing capability is reduced
Solution Approach 1:
The conductive layer is constructed as a thin flexible film or fabric coating that maintains glove flexibility while incorporating capacitive sensing elements. The thin-film structure allows the glove to bend and move naturally while the distributed capacitive sensors throughout the layer maintain sensing capability across the entire surface.
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
Enhances the user's ability to detect external objects and interact with them accurately, providing positive tactile feedback and enabling precise touchscreen interactions and manipulation tasks while wearing gloves.
Implementation Method 1
When an external object pushes against the node's exterior surface, the rod is translated inward (moving in a direction that is roughly perpendicular to the exterior surface) and the finger interface protrudes beyond the glove's inner surface and presses against the user's finger
Implementation Method 2
Palm trank 26 includes a high-friction coating. In this example a layer of rubber is bonded to a layer of NOMEX. The high-friction coating enhances grip.
Data Source
AI summary
A glove that enhances a user's ability to sense the details of external objects and to interact with external objects. One or more tactile nodes are provided on the glove. Each tactile node incorporates an attached rod oriented approximately perpendicular to the outer surface of the glove. The rod extends through to the interior of the glove—where it ends in a finger interface. When an external object pushes against the node's exterior surface, the rod is translated inward (moving in a direction that is roughly perpendicular to the exterior surface) and the finger interface cap protrudes beyond the glove's inner surface and presses against the user's finger. The small point of contact made by the finger interface cap enhances the user's ability to detect the external object. An array of such tactile nodes are preferably provided.