Development of bio-signal based continuous intensity wearable input device

Abstract

In this paper, instead of the input device that is limited to two-dimensional interfaces, we propose input device which is suitable for the virtual display and three-dimensional interfaces. We suggest the wearable device which is capable of 4-DOF continuous intensity input by using the signal extracted through the AHRS and the EMG electrode attached to the hand. By using this device, it is possible not only to represent the movement of the user’s arm but also to reflect the intensity of holding the fist using the magnitude of the EMG. This interface is designed as a universal interface applicable to various displays, and in order to be applied to different locations and to be used in the same way, a wearable-type was selected. In this paper, we present the structure, shape and implementation of the interface and we evaluated the applicability of the device through experiments and simple applications based on MATLAB. Input devices proposed in this paper, was confirmed superior in ease of use and the position control performance when it is compared to the existing pointing input device. There is significance in utilizing as an input device, not only the interface of two-dimension, but the interface with ultra-large display such as a three-dimensional interface.