Capacitive Touch Simulation Using Inflatable Conductive Tubes
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Solution Overview
Problem
Current methods for simulating human manual input on devices with capacitive touchscreens, such as phones and tablets, are inefficient due to reliance on human operators or mechanical systems that are prone to failures and require extensive manual handling, leading to high costs and errors.
Innovation Solution
A system utilizing a matrix of inflatable, conductive rubber tubes and an LCD display to simulate human touch on capacitive touchscreens, where a camera captures screen interactions and software creates scripts for automated testing, allowing for efficient and error-free simulation of touch events like taps, swipes, and gestures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If mechanical devices with robotic arms are used to simulate human touch, then the ability to automate touch simulation is improved, but the reliability deteriorates due to frequent equipment failures
Solution Approach 1:
The patent replaces mechanical robotic arms with an electrical field-based system. Conductive tubes are inflated to create an electrical field that interacts with the capacitive touchscreen, eliminating mechanical moving parts and achieving both automation and high reliability.
Solution Approach 2:
The patent uses pneumatic inflation of conductive tubes to position the electrical field structure. The tubes are inflated with gas to rise to the touchscreen surface, providing a reliable mechanical-free way to achieve the necessary physical configuration for touch simulation.
2Measurement precision
If human operators manually handle devices for testing, then the accuracy of simulating human input is maintained, but the productivity deteriorates due to time consumption and high costs
Solution Approach 1:
The system enables self-service automation where the electrical field system autonomously performs touch simulation without human intervention. The system can execute complex touch sequences automatically, maintaining accuracy while dramatically increasing productivity and reducing costs.
Solution Approach 2:
The patent changes the fundamental parameter of interaction from mechanical contact to electrical field interaction. By controlling the electrical field properties through inflated conductive tubes, the system achieves both accurate human-like touch simulation and automated high-speed testing.
3Extent of automation
If mechanical touch simulation systems are used, then the ability to perform automated testing is improved, but the device complexity increases due to multiple moving parts
Solution Approach 1:
The patent eliminates mechanical moving parts by substituting them with an electrical field-based system. The only moving component is the pneumatic inflation of tubes, which simplifies the overall system architecture while maintaining automated testing capability.
Solution Approach 2:
The inflated conductive tubes serve multiple functions: they position the electrical field, make physical contact with the touchscreen, and can be controlled to simulate various touch gestures. This multi-functionality reduces the need for separate specialized components.
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
Enables efficient and error-free simulation of human manual input on capacitive touchscreens, reducing operational costs and minimizing human error by automating the process of simulating user interactions, thus facilitating the testing and handling of multiple devices without the need for mechanical systems.
Implementation Method 1
devices using capacitive touchscreens
Implementation Method 2
conductive rubber tubes
Implementation Method 3
matrix of individually addressable, electric structures based on an LCD display
Data Source
AI summary
Disclosed are systems, methods, and devices for simulating human manual input for devices using capacitive touchscreens. In one embodiment, the system comprises a test fixture, wherein the test fixture comprises a matrix of tubes, each tube being coated with a conductive coating; and a camera located under the matrix and configured to record the capacitive touchscreen of the device under test. The system further includes a tablet to receive images from the camera and display a visual representation of the capacitive touchscreen of the device under test, wherein the tablet is configured to receive a plurality of touch events; update the visual representation of the capacitive touchscreen of the device under test in response to the plurality of touch events; and generate a simulation of touch events, the simulation representing interaction with the device under test. The system further includes a workstation communicatively coupled to the tablet and configured to receive the simulation from the tablet device; and transmit the simulation to the test fixture to enable the execution of the simulation on one or more additional devices under test.