A wearable haptic device for edge and surface simulation

TL;DR

This paper introduces a lightweight fingertip haptic device with dual-motor feedback that effectively differentiates between edge and surface contacts, enhancing tactile realism in VR interactions.

Contribution

A novel compact haptic device with dual-motor mechanism and sensor-based validation for improved edge and surface tactile feedback in VR.

Findings

Distinct contact patterns confirmed via sensor array.

93% classification accuracy in user study.

Mean response time of 2.79 seconds.

Abstract

Object manipulation is fundamental to virtual reality (VR) applications, yet conventional fingertip haptic devices fail to render certain tactile features relevant for immersive and precise interactions, as i.e. detection of edges. This paper presents a compact, lightweight fingertip haptic device (24.3 g) that delivers distinguishable surface and edge contact feedback through a novel dual-motor mechanism. Pressure distribution characterization using a 6 x 6 flexible sensor array demonstrates distinct contact patterns between the two stimulation modes. A preliminary user study with five participants achieved 93% average classification accuracy across four conditions (edge/surface contact with light/heavy pressure), with mean response times of 2.79 seconds. The results indicate that the proposed device can effectively convey edge and surface tactile cues, potentially enhancing object manipulation fidelity in VR environments.