Evaluation of a threshold-based tri-axial accelerometer fall detection algorithm

Using simulated falls performed under supervised conditions and activities of daily living (ADL) performed by elderly subjects, the ability to discriminate between falls and ADL was investigated using tri-axial accelerometer sensors, mounted on the trunk and thigh. Data analysis was performed using...

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Vydané v:Gait & posture Ročník 26; číslo 2; s. 194 - 199
Hlavní autori: Bourke, A.K., O’Brien, J.V., Lyons, G.M.
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: England Elsevier B.V 01.07.2007
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ISSN:0966-6362, 1879-2219
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Abstract Using simulated falls performed under supervised conditions and activities of daily living (ADL) performed by elderly subjects, the ability to discriminate between falls and ADL was investigated using tri-axial accelerometer sensors, mounted on the trunk and thigh. Data analysis was performed using M ATLAB to determine the peak accelerations recorded during eight different types of falls. These included; forward falls, backward falls and lateral falls left and right, performed with legs straight and flexed. Falls detection algorithms were devised using thresholding techniques. Falls could be distinguished from ADL for a total data set from 480 movements. This was accomplished using a single threshold determined by the fall-event data-set, applied to the resultant-magnitude acceleration signal from a tri-axial accelerometer located at the trunk.
AbstractList Using simulated falls performed under supervised conditions and activities of daily living (ADL) performed by elderly subjects, the ability to discriminate between falls and ADL was investigated using tri-axial accelerometer sensors, mounted on the trunk and thigh. Data analysis was performed using MATLAB to determine the peak accelerations recorded during eight different types of falls. These included; forward falls, backward falls and lateral falls left and right, performed with legs straight and flexed. Falls detection algorithms were devised using thresholding techniques. Falls could be distinguished from ADL for a total data set from 480 movements. This was accomplished using a single threshold determined by the fall-event data- set, applied to the resultant-magnitude acceleration signal from a tri-axial accelerometer located at the trunk.
Using simulated falls performed under supervised conditions and activities of daily living (ADL) performed by elderly subjects, the ability to discriminate between falls and ADL was investigated using tri-axial accelerometer sensors, mounted on the trunk and thigh. Data analysis was performed using MATLAB to determine the peak accelerations recorded during eight different types of falls. These included; forward falls, backward falls and lateral falls left and right, performed with legs straight and flexed. Falls detection algorithms were devised using thresholding techniques. Falls could be distinguished from ADL for a total data set from 480 movements. This was accomplished using a single threshold determined by the fall-event data-set, applied to the resultant-magnitude acceleration signal from a tri-axial accelerometer located at the trunk.Using simulated falls performed under supervised conditions and activities of daily living (ADL) performed by elderly subjects, the ability to discriminate between falls and ADL was investigated using tri-axial accelerometer sensors, mounted on the trunk and thigh. Data analysis was performed using MATLAB to determine the peak accelerations recorded during eight different types of falls. These included; forward falls, backward falls and lateral falls left and right, performed with legs straight and flexed. Falls detection algorithms were devised using thresholding techniques. Falls could be distinguished from ADL for a total data set from 480 movements. This was accomplished using a single threshold determined by the fall-event data-set, applied to the resultant-magnitude acceleration signal from a tri-axial accelerometer located at the trunk.
Abstract Using simulated falls performed under supervised conditions and activities of daily living (ADL) performed by elderly subjects, the ability to discriminate between falls and ADL was investigated using tri-axial accelerometer sensors, mounted on the trunk and thigh. Data analysis was performed using M ATLAB to determine the peak accelerations recorded during eight different types of falls. These included; forward falls, backward falls and lateral falls left and right, performed with legs straight and flexed. Falls detection algorithms were devised using thresholding techniques. Falls could be distinguished from ADL for a total data set from 480 movements. This was accomplished using a single threshold determined by the fall-event data-set, applied to the resultant-magnitude acceleration signal from a tri-axial accelerometer located at the trunk.
Using simulated falls performed under supervised conditions and activities of daily living (ADL) performed by elderly subjects, the ability to discriminate between falls and ADL was investigated using tri-axial accelerometer sensors, mounted on the trunk and thigh. Data analysis was performed using M ATLAB to determine the peak accelerations recorded during eight different types of falls. These included; forward falls, backward falls and lateral falls left and right, performed with legs straight and flexed. Falls detection algorithms were devised using thresholding techniques. Falls could be distinguished from ADL for a total data set from 480 movements. This was accomplished using a single threshold determined by the fall-event data-set, applied to the resultant-magnitude acceleration signal from a tri-axial accelerometer located at the trunk.
Author Bourke, A.K.
Lyons, G.M.
O’Brien, J.V.
Author_xml – sequence: 1
  givenname: A.K.
  surname: Bourke
  fullname: Bourke, A.K.
  email: alan.bourke@ul.ie
  organization: Biomedical Electronics Laboratory, Department of Electronic and Computer Engineering, University of Limerick, Limerick, Ireland
– sequence: 2
  givenname: J.V.
  surname: O’Brien
  fullname: O’Brien, J.V.
  organization: Department of Physical Education and Sport Sciences, University of Limerick, Limerick, Ireland
– sequence: 3
  givenname: G.M.
  surname: Lyons
  fullname: Lyons, G.M.
  organization: Biomedical Electronics Laboratory, Department of Electronic and Computer Engineering, University of Limerick, Limerick, Ireland
BackLink https://www.ncbi.nlm.nih.gov/pubmed/17101272$$D View this record in MEDLINE/PubMed
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ADL
Falls in the elderly
Fall detection
Resultant-magnitude signal
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SSID ssj0004382
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Snippet Using simulated falls performed under supervised conditions and activities of daily living (ADL) performed by elderly subjects, the ability to discriminate...
Abstract Using simulated falls performed under supervised conditions and activities of daily living (ADL) performed by elderly subjects, the ability to...
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StartPage 194
SubjectTerms Acceleration
Accelerometer
Accidental Falls - prevention & control
Activities of Daily Living
ADL
Aged
Aged, 80 and over
Biomechanical Phenomena
Fall detection
Falls in the elderly
Female
Humans
Male
Monitoring, Ambulatory - instrumentation
Monitoring, Ambulatory - methods
Movement - physiology
Orthopedics
Resultant-magnitude signal
Sensitivity and Specificity
Title Evaluation of a threshold-based tri-axial accelerometer fall detection algorithm
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https://dx.doi.org/10.1016/j.gaitpost.2006.09.012
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Volume 26
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