Weight Distribution Input Device for Accessible Virtual Joystick Control
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Solution Overview
Problem
Conventional handheld controllers with control sticks are not accessible or suitable for users with reduced motor control, chronic pain, or joint disorders, as they require physical manipulation of the controller, which can be challenging for individuals with disabilities or injuries.
Innovation Solution
An input device equipped with sensors to detect changes in weight distribution, allowing users to control a computing system by shifting their body weight, thereby providing virtual joystick inputs, which can be used in conjunction with other inputs or alone, enhancing accessibility and sensitivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional handheld controllers with control sticks are used, then precise control input can be achieved, but accessibility for users with reduced motor control deteriorates
Solution Approach 1:
The patent replaces the mechanical control stick system with a sensor-based weight distribution detection system. Sensors detect changes in weight distribution across the seat surface to generate control signals, eliminating the need for manual manipulation of physical controls while maintaining precise directional input capability.
Solution Approach 2:
The system introduces weight distribution sensing as an intermediary between the user's body and the control system. Instead of direct manual control, the user's weight shifts are detected by sensors and translated into control signals, serving as a mediator that accommodates reduced motor control while preserving control precision.
2Speed
If traditional controllers requiring physical manipulation are used, then control responsiveness can be achieved, but usability for users with chronic pain or joint disorders deteriorates
Solution Approach 1:
The patent substitutes mechanical manipulation with physiological sensing. Weight distribution changes detected by sensors are converted into control signals in real-time, providing responsive control without requiring physical effort or movement that would cause pain or discomfort.
Solution Approach 2:
The system utilizes the user's own body weight and natural weight shifts as the control mechanism. Users control the system through their existing physiological movements without needing to learn or perform specific manual operations, making the system inherently accessible while maintaining responsiveness.
3Ease of operation
If virtual joystick input based on weight distribution is implemented, then accessibility for disabled users is improved, but device complexity increases
Solution Approach 1:
The sensor array designed for weight distribution detection serves multiple functions: it detects directional weight shifts for virtual joystick control, monitors overall weight presence, and can potentially track weight distribution patterns over time. This multi-functionality justifies the sensor system's complexity by providing comprehensive control capabilities.
Solution Approach 2:
The system creates a virtual replica of traditional joystick functionality through weight distribution sensing. Instead of requiring physical joystick manipulation, the sensor system captures weight distribution data and processes it to generate equivalent control signals, copying the functional output of a traditional joystick through a different physical mechanism.
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 system enables users to emulate joystick functionality using body weight shifts, improving accessibility and responsiveness for individuals who cannot use traditional controllers, allowing for customizable sensitivity and accuracy.
Implementation Method 1
one or more sensors configured to sense a change in weight distribution of a user positioned on the input device
Data Source
AI summary
An input device for controlling a computing system includes one or more sensors configured to sense a change in weight distribution of a user positioned on the input device in use, and a transmitter configured to transmit a signal based on the sensed change in weight distribution, for use in a virtual joystick input to a computing system.