Strain Measurement Ring for VR Finger Interaction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional VR gloves have limited fidelity in detecting user interactions with virtual and real objects, and provide inadequate feedback to simulate real object interactions, making them inefficient for immersive VR/AR experiences.
Innovation Solution
A strain measurement ring that measures strain information from a user's finger interactions, sending data to a VR/AR console to determine input types and provide haptic feedback, simulating virtual object interactions by adjusting tension and applying pressure through a deformable band and strain-sensitive elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional VR gloves are used, then basic hand movement detection is possible, but measurement precision and interaction fidelity are limited
Solution Approach 1:
The VR glove is divided into multiple independent sensor modules, each equipped with strain measurement rings on individual fingers. Each module independently detects finger movements and forces, allowing high-precision local measurements without requiring a complex integrated structure across the entire glove.
Solution Approach 2:
The strain measurement ring serves multiple functions: detecting finger movement position, measuring applied force magnitude, and identifying interaction type (virtual vs. real object). This multi-functionality achieves high measurement precision without proportionally increasing device complexity.
2Measurement precision
If conventional VR gloves provide feedback, then basic haptic response is possible, but feedback fidelity to simulate real object interaction is inadequate
Solution Approach 1:
The system implements a closed-loop feedback mechanism where strain measurement rings detect finger interactions, the processor analyzes the data to determine interaction type and force magnitude, and actuators provide proportional haptic feedback. This feedback loop creates realistic tactile sensations without requiring excessive energy by only activating feedback when interactions are detected.
Solution Approach 2:
The haptic feedback system dynamically adjusts feedback parameters (force magnitude, vibration frequency, pressure) based on the detected interaction characteristics. By changing feedback parameters proportionally to the measured strain, the system achieves high feedback fidelity while consuming energy only when and where needed.
3Adaptability or versatility
If conventional VR gloves detect interactions, then basic virtual object interaction is possible, but detection of real object interactions is difficult
Solution Approach 1:
The strain measurement rings are positioned at specific locations on each finger to capture local deformation characteristics. By measuring strain at multiple discrete points (proximal, middle, distal phalanges), the system captures the unique deformation patterns that differentiate real object interactions (which apply force to the finger tip) from virtual object interactions (which move the entire finger).
Solution Approach 2:
Instead of trying to directly detect the presence of a real or virtual object, the system inverts the approach by measuring the deformation pattern of the finger itself. Real object interactions create characteristic compression patterns in the finger pad and proximal phalanx, while virtual interactions produce different deformation patterns, allowing the processor to differentiate interaction types based on these inverted measurement patterns.
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 user interaction fidelity by accurately differentiating between virtual and real object interactions, providing immersive feedback that simulates real object contact, thereby improving the VR/AR experience.
Implementation Method 1
a strain-sensitive element outputting signals in response to interactions between the strain measurement ring and a real object
Implementation Method 2
the user's skin is compressed, and the circumference of the strain measurement ring decreases, resulting in strain information corresponding to the interaction with the real object
Implementation Method 3
The deformable band is an elastic band
Implementation Method 4
When the enclosed portion of the user's body contacts a real object, the user's skin is compressed, and the circumference of the strain measurement ring decreases
Implementation Method 5
The VR/AR console may send haptic command signals to the strain measurement ring, which adjusts the tension of the strain measurement ring to simulate interaction with a virtual object
Implementation Method 6
the strain measurement ring applies pressure to the user's skin to simulate contact with a virtual object
Data Source
AI summary
A strain measurement ring measures strain information describing deformation of a strain-sensitive element included in the strain measurement ring due to movement of a user's finger. The strain measurement ring includes a semi-rigid band coupled to a deformable band, which together encompass a portion of the user's body. The semi-rigid band includes two coupling ends each coupled to a respective coupling end of the deformable band. The deformable band includes the strain-sensitive element. The strain measurement ring may include an emitter to transmit strain information to a virtual reality/augmented reality (VR/AR) console. The strain measurement ring may include an actuator to change the tension of the deformable band in response to haptic command signals from a VR/AR console. As a result, the strain measurement ring may apply pressure to the user's skin to simulate contact with a virtual object.