Pressure-Sensing Apparel Interface for Glove-Friendly Command Input
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Solution Overview
Problem
Existing articles of apparel face challenges in implementing user interfaces that are both reliable and effective, particularly when users are engaged in physical activity or wearing gloves, due to limitations of capacitive sensors and conventional touchscreens.
Innovation Solution
An article of apparel with a pressure sensor interface that includes a sensor array integrated within fabric layers, allowing large-scale movements to input commands, and is configured to be environmentally isolated, incorporating electronic components like LEDs and wireless communication for controlling both integral and external devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If capacitive sensors and conventional touchscreens are used in apparel, then the user interface can detect touch input, but the reliability deteriorates when users are engaged in physical activity or wearing gloves
Solution Approach 1:
The patent replaces capacitive sensing (which relies on electrical properties) with pressure sensing technology that detects mechanical force applied to the fabric. This substitution allows the system to reliably detect user input through pressure changes regardless of whether the user is wearing gloves or engaged in physical activity, as pressure detection does not depend on electrical conductivity of the user's skin or clothing.
2Object-affected harmful factors
If pressure sensors are integrated within fabric layers, then environmental isolation is improved, but the device complexity increases
Solution Approach 1:
The patent integrates pressure sensors within the multi-layer fabric structure, nesting the electronic sensing elements between protective fabric layers. This nesting approach provides environmental isolation by shielding the sensors from external factors while incorporating them into the apparel's existing structure, thereby managing complexity through hierarchical integration rather than adding separate external components.
Solution Approach 2:
The patent uses flexible fabric layers as both the structural medium and the protective enclosure for the pressure sensors. These thin, flexible film structures provide environmental isolation while maintaining the flexibility and wearability required for apparel, avoiding the need for rigid protective housings that would increase complexity and reduce comfort.
3Ease of operation
If large-scale movements are used for command input, then ease of operation is improved, but the measurement precision may deteriorate
Solution Approach 1:
The patent divides the pressure sensing area into multiple discrete sensor elements or zones within the fabric. This segmentation allows the system to detect both large-scale movements (by identifying which zones are activated) and precise pressure information (by measuring the magnitude of pressure in each zone), thereby maintaining measurement precision while enabling easy large-scale gesture input.
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 pressure sensor interface enables reliable command input through large-scale movements, unaffected by environmental conditions, and facilitates control of both internal and external devices, enhancing user interaction and functionality.
Implementation Method 1
each pressure sensor is configured to output a signal indicative of an amount of pressure being exerted on the pressure sensor by an external mechanical force
Implementation Method 2
an LED array, coupled to the controller, configured to display information related to the function
Data Source
AI summary
An article of apparel and method include a structure configured to enclose a human body part, a pressure sensor array including multiple pressure sensors separately positioned at locations within the structure, wherein each pressure sensor is configured to output a signal indicative of an amount of pressure being exerted on the pressure sensor by an external mechanical force, an electronic display, and a controller. The controller is configured to receive signals from the pressure sensors and, based on a sequence and a timing of the signals as received, determine a command related to a function of a device. The electronic display is configured to display information related to the function.