ABSTRACT
Under the rubric of ‘ecological human-machine’ interface, especially for visually impaired persons, an electric aid for guiding their perception and action is developed. The device, named CyARM, measures with an ultrasonic sensor the distance between its holder and certain object that holder points to, and transmits the distance information to her/his haptic sense. The user can explore the environment of interest by pointing in any direction, and when an object is detected, the CyARM will give the user a feeling as if the user’s hand is extended and reaching out to the object. CyARM has a sensor module with the capability of range measurement and the actuator module that has a motor with a wheel to rewind the wire.
