Force Plate Alert System for VR Balance Control
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Solution Overview
Problem
Users wearing head-mounted displays for virtual reality games are prone to falling off conventional load detecting devices, leading to lost operation data and interrupted gameplay, which diminishes the gaming experience.
Innovation Solution
A force plate with a transmitting section that sends an alert signal to a display when the user's center of foot pressure reaches its perimeter, prompting the display to generate alert images or sounds to help the user maintain balance and continue gameplay.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a user wears a head-mounted display and uses virtual reality images to play a game on a conventional load detecting device, then the user is more likely to fall from the load detecting device, but the operation data of the game is lost and the progress of the game stops
Solution Approach 1:
The force plate detects the user's center of foot pressure position and provides visual feedback by displaying a marker at the corresponding location on the monitor. This feedback loop allows the user to continuously monitor their position and adjust their balance to prevent falling, thereby maintaining gameplay continuity without compromising ease of operation
Solution Approach 2:
A marker is introduced as an intermediary element between the force plate's pressure detection and the user's visual perception. The marker visually represents the user's center of foot pressure position, making it easier for the user to understand and control their balance position, thus preventing falls while maintaining game operation
2Reliability
If the center of foot pressure is monitored to detect user position, then fall prevention is enabled, but the system complexity increases
Solution Approach 1:
The force plate serves multiple functions: it acts as both the game controller surface and the detection device for center of foot pressure. By integrating these functions into a single device, the system achieves fall prevention capability without significantly increasing overall system complexity
Solution Approach 2:
Instead of adding complex physical detection mechanisms, the system creates a visual copy (marker) of the center of foot pressure position on the monitor. This digital representation allows for simple and effective position monitoring without requiring additional complex hardware
Data Source
AI summary
A technique to facilitate continuing the operation through a load applied by a user who proceeds with a picture program is provided. A force plate functions as a controller controlling a game console. The foot pressure includes a transmitting section configured to transmit, when the COP of a user enters a peripheral part of the force plate, an alert signal to an HM display configured to output a picture from the game console.