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A semi-autonomous motorized mobile hospital bed for safe transportation of head injury patients in dynamic hospital environments without bed switching

Published online by Cambridge University Press:  08 December 2014

Chao Wang ,
Alexey S. Matveev ,
Andrey V. Savkin ,
Ray Clout  and
Hung T. Nguyen
Chao Wang*
Affiliation:
School of Electrical Engineering and Telecommunications, The University of New South Wales, Sydney, NSW 2052, Australia.
Alexey S. Matveev
Affiliation:
Department of Mathematics and Mechanics, Saint Petersburg University, Universitetskii 28, Petrodvoretz, St.Petersburg, 198504, Russia.
Andrey V. Savkin
Affiliation:
School of Electrical Engineering and Telecommunications, The University of New South Wales, Sydney, NSW 2052, Australia.
Ray Clout
Affiliation:
Faculty of Engineering, University of Technology, Sydney, NSW 2007, Australia.
Hung T. Nguyen
Affiliation:
Faculty of Engineering, University of Technology, Sydney, NSW 2007, Australia.
*
*Corresponding author. Email: z3184703@zmail.unsw.edu.au
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Summary

We present a novel motorized semi-autonomous mobile hospital bed guided by a human operator and a reactive navigation algorithm. The proposed reactive navigation algorithm is launched when the sensory device detects that the hospital bed is in the potential danger of collision. The semi-autonomous hospital bed is able to safely and quickly deliver critical neurosurgery (head trauma) patients to target locations in dynamic uncertain hospital environments such as crowded hospital corridors while avoiding en-route steady and moving obstacles. We do not restrict the nature or the motion of the obstacles, meaning that the shapes of the obstacles may be time-varying or deforming and they may undergo arbitrary motions. The only information available to the navigation system is the current distance to the nearest obstacle. Performance of the proposed navigation algorithm is verified via theoretical studies. Simulation and experimental results also confirm the performance of the reactive navigation algorithm in real world scenarios.

Keywords

Motorized hospital bedsCollision avoidanceSemi-autonomous hospital bedsSliding mode controlReactive navigation
Type
Articles
Information
Robotica , Volume 34 , Issue 8 , August 2016 , pp. 1880 - 1897
Copyright
Copyright © Cambridge University Press 2014 

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