Upper limb joint angle measurement in occupational health

Usual human motion capture systems are designed to work in controlled laboratory conditions. For occupational health, instruments that can measure during normal daily life are essential, as the evaluation of the workers' movements is a key factor to reduce employee injury- and illness-related c...

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Vydáno v:Computer methods in biomechanics and biomedical engineering Ročník 19; číslo 2; s. 159 - 170
Hlavní autoři: Álvarez, Diego, Alvarez, Juan C., González, Rafael C., López, Antonio M.
Médium: Journal Article
Jazyk:angličtina
Vydáno: England Taylor & Francis 25.01.2016
Témata:
Acceleration
Algorithms
Elbow Joint - physiology
Humans
inertial measurement system
joint angle measurement
Movement
Occupational Health
Range of Motion, Articular - physiology
Rotation
Shoulder Joint - physiology
Task Performance and Analysis
Upper Extremity - physiology
wearable sensors
Wrist Joint - physiology
joint angle measurement
wearable sensors
inertial measurement system
occupational health
ISSN:1025-5842, 1476-8259, 1476-8259
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Shrnutí:Usual human motion capture systems are designed to work in controlled laboratory conditions. For occupational health, instruments that can measure during normal daily life are essential, as the evaluation of the workers' movements is a key factor to reduce employee injury- and illness-related costs. In this paper, we present a method for joint angle measurement, combining inertial sensors (accelerometers and gyroscopes) and magnetic sensors. This method estimates wrist flexion, wrist lateral deviation, elbow flexion, elbow pronation, shoulder flexion, shoulder abduction and shoulder internal rotation. The algorithms avoid numerical integration of the signals, which allows for long-time estimations without angle estimation drift. The system has been tested both under laboratory and field conditions. Controlled laboratory tests show mean estimation errors between 0.06° and of 1.05°, and standard deviation between 2.18° and 9.20°. Field tests seem to confirm these results when no ferromagnetic materials are close to the measurement system.
Bibliografie:ObjectType-Article-1
SourceType-Scholarly Journals-1
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content type line 23
ISSN:1025-5842
1476-8259
1476-8259
DOI:10.1080/10255842.2014.997718