Development of a tactile vest

Authors:
Lynette A. Jones;Mealani Nakamura;Brett Lockyer
Affiliations:
Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA;Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA;Department of Electrical Engineering, Massachusetts Institute of Technology, Cambridge, MA
Venue:
HAPTICS'04 Proceedings of the 12th international conference on Haptic interfaces for virtual environment and teleoperator systems
Year:
2004

Citing 5
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Abstract

This research is focused on the development of a torso-based haptic display that can be used to present navigational cues to a human operator. The requirements for this display are that it can be worn on a mobile operator, is light weight and robust. Two tactile vests are being developed to meet these objectives, one based on small electric motors and the other on contractile shape memory alloy (SMA) fibers. Four electromechanical actuators were evaluated for use in the vest and a small vibration motor was selected for the initial prototype. A 3×3 array was fabricated for psychophysical testing and positioned on the lower back. High accuracy in perceiving the direction of tactor activation was achieved by all subjects in this task. A tactor array based on SMA actuators was fabricated and tested and results indicate that this low-bandwidth device can generate tactile inputs on the torso that are perceptible.