Matrix Pressure Sensor Haptic Device for VR Tactile Feedback
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Solution Overview
Problem
Current haptic devices in VR/AR systems fail to realistically replicate the sense of touch, lacking proprioceptive feedback and covering only individual fingers, while anchored devices have limitations in providing comprehensive tactile experiences.
Innovation Solution
A haptic device with a matrix configuration of pressure sensors on its surface, coupled with a processor that generates a proxy image corresponding to sensor locations, allowing for realistic tactile feedback and control of virtual objects through electrical and mechanical stimulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If haptic devices use individual finger sensors, then device complexity is reduced, but measurement precision and tactile coverage are insufficient
Solution Approach 1:
The touch-sensitive surface is divided into multiple discrete pressure sensors arranged in a matrix configuration. Each sensor independently detects pressure at its specific location, enabling precise tactile measurement across the entire surface area rather than relying on a single sensor or limited finger contact points.
Solution Approach 2:
The patent transitions from one-dimensional or point-based tactile sensing to a two-dimensional matrix array of pressure sensors. This dimensional expansion allows comprehensive coverage of the touch surface, capturing pressure distribution across width and depth, thereby enhancing measurement precision without proportionally increasing complexity.
2Adaptability or versatility
If haptic devices cover only individual fingers, then device complexity is reduced, but the extent of tactile experience is limited
Solution Approach 1:
The matrix configuration of pressure sensors creates a universal touch-sensitive surface that can detect and respond to tactile input from any location across the entire surface area. This multi-functional array replaces limited finger-specific sensors, enabling comprehensive tactile coverage for various hand positions and contact points while maintaining a unified sensor system.
3Ease of operation
If anchored haptic devices are used, then stability is improved, but ease of operation and comprehensive tactile feedback are reduced
Solution Approach 1:
The patent replaces anchored mechanical haptic devices with a wireless, portable touch-sensitive surface incorporating electronic pressure sensors. This substitution eliminates mechanical anchoring constraints while maintaining tactile feedback through electronic sensing and digital signal processing, thereby improving ease of operation without sacrificing reliability through advanced sensor technology.
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 the immersive experience by providing high-fidelity haptic and proprioceptive feedback, allowing users to interact with virtual objects in a more realistic and comprehensive manner, overcoming limitations of existing devices.
Implementation Method 1
an input device is provided comprising pressure sensors disposed in a configuration, for example a matrix format, on the surface of the input device
Data Source
AI summary
An apparatus and method is provided in which pressure sensors are disposed in a configuration such as a matrix format on the surface of the user input device. The processor generates a proxy on the image having a plurality of points disposed in a corresponding configuration. The proxy points are associated with each pressure sensor locations. The processor then generates an output effect responsive to input signal received from one or more pressure sensors of the input device.