Lower Limb Exoskeleton Sensors: State-of-the-Art

Due to the ever-increasing proportion of older people in the total population and the growing awareness of the importance of protecting workers against physical overload during long-time hard work, the idea of supporting exoskeletons progressed from high-tech fiction to almost commercialized product...

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Main Authors: Slávka Neťuková, Martin Bejtic, Christiane Malá, Lucie Horáková, Patrik Kutílek, Jan Kauler, Radim Krupička
Format: Article
Language:English
Published: MDPI AG 2022-11-01
Series:Sensors
Subjects:
Online Access:https://www.mdpi.com/1424-8220/22/23/9091
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author Slávka Neťuková
Martin Bejtic
Christiane Malá
Lucie Horáková
Patrik Kutílek
Jan Kauler
Radim Krupička
author_facet Slávka Neťuková
Martin Bejtic
Christiane Malá
Lucie Horáková
Patrik Kutílek
Jan Kauler
Radim Krupička
author_sort Slávka Neťuková
collection DOAJ
description Due to the ever-increasing proportion of older people in the total population and the growing awareness of the importance of protecting workers against physical overload during long-time hard work, the idea of supporting exoskeletons progressed from high-tech fiction to almost commercialized products within the last six decades. Sensors, as part of the perception layer, play a crucial role in enhancing the functionality of exoskeletons by providing as accurate real-time data as possible to generate reliable input data for the control layer. The result of the processed sensor data is the information about current limb position, movement intension, and needed support. With the help of this review article, we want to clarify which criteria for sensors used in exoskeletons are important and how standard sensor types, such as kinematic and kinetic sensors, are used in lower limb exoskeletons. We also want to outline the possibilities and limitations of special medical signal sensors detecting, e.g., brain or muscle signals to improve data perception at the human–machine interface. A topic-based literature and product research was done to gain the best possible overview of the newest developments, research results, and products in the field. The paper provides an extensive overview of sensor criteria that need to be considered for the use of sensors in exoskeletons, as well as a collection of sensors and their placement used in current exoskeleton products. Additionally, the article points out several types of sensors detecting physiological or environmental signals that might be beneficial for future exoskeleton developments.
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spelling doaj.art-dbcb5d8b46b04806b11184e36f41f8cb2023-11-24T12:08:31ZengMDPI AGSensors1424-82202022-11-012223909110.3390/s22239091Lower Limb Exoskeleton Sensors: State-of-the-ArtSlávka Neťuková0Martin Bejtic1Christiane Malá2Lucie Horáková3Patrik Kutílek4Jan Kauler5Radim Krupička6Faculty of Biomedical Engineering, Czech Technical University in Prague, 272 01 Kladno, Czech RepublicFaculty of Biomedical Engineering, Czech Technical University in Prague, 272 01 Kladno, Czech RepublicFaculty of Biomedical Engineering, Czech Technical University in Prague, 272 01 Kladno, Czech RepublicFaculty of Biomedical Engineering, Czech Technical University in Prague, 272 01 Kladno, Czech RepublicFaculty of Biomedical Engineering, Czech Technical University in Prague, 272 01 Kladno, Czech RepublicFaculty of Biomedical Engineering, Czech Technical University in Prague, 272 01 Kladno, Czech RepublicFaculty of Biomedical Engineering, Czech Technical University in Prague, 272 01 Kladno, Czech RepublicDue to the ever-increasing proportion of older people in the total population and the growing awareness of the importance of protecting workers against physical overload during long-time hard work, the idea of supporting exoskeletons progressed from high-tech fiction to almost commercialized products within the last six decades. Sensors, as part of the perception layer, play a crucial role in enhancing the functionality of exoskeletons by providing as accurate real-time data as possible to generate reliable input data for the control layer. The result of the processed sensor data is the information about current limb position, movement intension, and needed support. With the help of this review article, we want to clarify which criteria for sensors used in exoskeletons are important and how standard sensor types, such as kinematic and kinetic sensors, are used in lower limb exoskeletons. We also want to outline the possibilities and limitations of special medical signal sensors detecting, e.g., brain or muscle signals to improve data perception at the human–machine interface. A topic-based literature and product research was done to gain the best possible overview of the newest developments, research results, and products in the field. The paper provides an extensive overview of sensor criteria that need to be considered for the use of sensors in exoskeletons, as well as a collection of sensors and their placement used in current exoskeleton products. Additionally, the article points out several types of sensors detecting physiological or environmental signals that might be beneficial for future exoskeleton developments.https://www.mdpi.com/1424-8220/22/23/9091exoskeletonssensorslower limbswearable robotspowered orthosis
spellingShingle Slávka Neťuková
Martin Bejtic
Christiane Malá
Lucie Horáková
Patrik Kutílek
Jan Kauler
Radim Krupička
Lower Limb Exoskeleton Sensors: State-of-the-Art
Sensors
exoskeletons
sensors
lower limbs
wearable robots
powered orthosis
title Lower Limb Exoskeleton Sensors: State-of-the-Art
title_full Lower Limb Exoskeleton Sensors: State-of-the-Art
title_fullStr Lower Limb Exoskeleton Sensors: State-of-the-Art
title_full_unstemmed Lower Limb Exoskeleton Sensors: State-of-the-Art
title_short Lower Limb Exoskeleton Sensors: State-of-the-Art
title_sort lower limb exoskeleton sensors state of the art
topic exoskeletons
sensors
lower limbs
wearable robots
powered orthosis
url https://www.mdpi.com/1424-8220/22/23/9091
work_keys_str_mv AT slavkanetukova lowerlimbexoskeletonsensorsstateoftheart
AT martinbejtic lowerlimbexoskeletonsensorsstateoftheart
AT christianemala lowerlimbexoskeletonsensorsstateoftheart
AT luciehorakova lowerlimbexoskeletonsensorsstateoftheart
AT patrikkutilek lowerlimbexoskeletonsensorsstateoftheart
AT jankauler lowerlimbexoskeletonsensorsstateoftheart
AT radimkrupicka lowerlimbexoskeletonsensorsstateoftheart