Toward Design of a Drip-Stand Patient Follower Robot

A person following robot is an application of service robotics that primarily focuses on human-robot interaction, for example, in security and health care. This paper explores some of the design and development challenges of a patient follower robot. Our motivation stemmed from common mobility chall...

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Main Authors: Zewen Wu, Shahram Payandeh
Format: Article
Language:English
Published: Wiley 2020-01-01
Series:Journal of Robotics
Online Access:http://dx.doi.org/10.1155/2020/9080642
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author Zewen Wu
Shahram Payandeh
author_facet Zewen Wu
Shahram Payandeh
author_sort Zewen Wu
collection DOAJ
description A person following robot is an application of service robotics that primarily focuses on human-robot interaction, for example, in security and health care. This paper explores some of the design and development challenges of a patient follower robot. Our motivation stemmed from common mobility challenges associated with patients holding on and pulling the medical drip stand. Unlike other designs for person following robots, the proposed design objectives need to preserve as much as patient privacy and operational challenges in the hospital environment. We placed a single camera closer to the ground, which can result in a narrower field of view to preserve patient privacy. Through a unique design of artificial markers placed on various hospital clothing, we have shown how the visual tracking algorithm can determine the spatial location of the patient with respect to the robot. The robot control algorithm is implemented in three parts: (a) patient detection; (b) distance estimation; and (c) trajectory controller. For patient detection, the proposed algorithm utilizes two complementary tools for target detection, namely, template matching and colour histogram comparison. We applied a pinhole camera model for the estimation of distance from the robot to the patient. We proposed a novel movement trajectory planner to maintain the dynamic tipping stability of the robot by adjusting the peak acceleration. The paper further demonstrates the practicality of the proposed design through several experimental case studies.
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spelling doaj-art-acf1fa08d9284b2ab7620f347cb27e8d2025-02-03T01:05:21ZengWileyJournal of Robotics1687-96001687-96192020-01-01202010.1155/2020/90806429080642Toward Design of a Drip-Stand Patient Follower RobotZewen Wu0Shahram Payandeh1Network Robotics and Sensing Laboratory, School of Engineering Science, Simon Fraser University, Burnaby, British Columbia V5A 1S6, CanadaNetwork Robotics and Sensing Laboratory, School of Engineering Science, Simon Fraser University, Burnaby, British Columbia V5A 1S6, CanadaA person following robot is an application of service robotics that primarily focuses on human-robot interaction, for example, in security and health care. This paper explores some of the design and development challenges of a patient follower robot. Our motivation stemmed from common mobility challenges associated with patients holding on and pulling the medical drip stand. Unlike other designs for person following robots, the proposed design objectives need to preserve as much as patient privacy and operational challenges in the hospital environment. We placed a single camera closer to the ground, which can result in a narrower field of view to preserve patient privacy. Through a unique design of artificial markers placed on various hospital clothing, we have shown how the visual tracking algorithm can determine the spatial location of the patient with respect to the robot. The robot control algorithm is implemented in three parts: (a) patient detection; (b) distance estimation; and (c) trajectory controller. For patient detection, the proposed algorithm utilizes two complementary tools for target detection, namely, template matching and colour histogram comparison. We applied a pinhole camera model for the estimation of distance from the robot to the patient. We proposed a novel movement trajectory planner to maintain the dynamic tipping stability of the robot by adjusting the peak acceleration. The paper further demonstrates the practicality of the proposed design through several experimental case studies.http://dx.doi.org/10.1155/2020/9080642
spellingShingle Zewen Wu
Shahram Payandeh
Toward Design of a Drip-Stand Patient Follower Robot
Journal of Robotics
title Toward Design of a Drip-Stand Patient Follower Robot
title_full Toward Design of a Drip-Stand Patient Follower Robot
title_fullStr Toward Design of a Drip-Stand Patient Follower Robot
title_full_unstemmed Toward Design of a Drip-Stand Patient Follower Robot
title_short Toward Design of a Drip-Stand Patient Follower Robot
title_sort toward design of a drip stand patient follower robot
url http://dx.doi.org/10.1155/2020/9080642
work_keys_str_mv AT zewenwu towarddesignofadripstandpatientfollowerrobot
AT shahrampayandeh towarddesignofadripstandpatientfollowerrobot