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Publication . Article . 2018

TeMoto: Intuitive Multi-Range Telerobotic System with Natural Gestural and Verbal Instruction Interface

Robert Valner; Karl Kruusamäe; Mitchell W Pryor;
Open Access
English
Published: 01 Feb 2018 Journal: Robotics, volume 7, issue 1 (issn: 2218-6581, Copyright policy )
Publisher: MDPI AG
Abstract
Teleoperated mobile robots, equipped with object manipulation capabilities, provide safe means for executing dangerous tasks in hazardous environments without putting humans at risk. However, mainly due to a communication delay, complex operator interfaces and insufficient Situational Awareness (SA), the task productivity of telerobots remains inferior to human workers. This paper addresses the shortcomings of telerobots by proposing a combined approach of (i) a scalable and intuitive operator interface with gestural and verbal input, (ii) improved Situational Awareness (SA) through sensor fusion according to documented best practices, (iii) integrated virtual fixtures for task simplification and minimizing the operator’s cognitive burden and (iv) integrated semiautonomous behaviors that further reduce cognitive burden and negate the impact of communication delays, execution latency and/or failures. The proposed teleoperation system, TeMoto, is implemented using ROS (Robot Operating System) to ensure hardware agnosticism, extensibility and community access. The operator’s command interface consists of a Leap Motion Controller for hand tracking, Griffin PowerMate USB as turn knob for scaling and a microphone for speech input. TeMoto is evaluated on multiple robots including two mobile manipulator platforms. In addition to standard, task-specific evaluation techniques (completion time, user studies, number of steps, etc.)—which are platform and task dependent and thus difficult to scale—this paper presents additional metrics for evaluating the user interface including task-independent criteria for measuring generalized (i) task completion efficiency and (ii) operator context switching.
Subjects by Vocabulary

Library of Congress Subject Headings: lcsh:Mechanical engineering and machinery lcsh:TJ1-1570

Microsoft Academic Graph classification: Situation awareness Computer science Context switch Mobile robot Interface (computing) Mobile manipulator Task (project management) User interface Human–computer interaction Teleoperation

Subjects

teleoperation, human-robot interface, supervisory control, natural language input, gesture input, teleoperation; human-robot interface; supervisory control; natural language input; gesture input, Artificial Intelligence, Control and Optimization, Mechanical Engineering

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