Title
Implementation of a real-time human movement classifier using a triaxial accelerometer for ambulatory monitoring
Abstract
The real-time monitoring of human movement can provide valuable information regarding an individual's degree of functional ability and general level of activity. This paper presents the implementation of a real-time classification system for the types of human movement associated with the data acquired from a single, waist-mounted triaxial accelerometer unit. The major advance proposed by the system is to perform the vast majority of signal processing onboard the wearable unit using embedded intelligence. In this way, the system distinguishes between periods of activity and rest, recognizes the postural orientation of the wearer, detects events such as walking and falls, and provides an estimation of metabolic energy expenditure. A laboratory-based trial involving six subjects was undertaken, with results indicating an overall accuracy of 90.8% across a series of 12 tasks (283 tests) involving a variety of movements related to normal daily activities. Distinction between activity and rest was performed without error; recognition of postural orientation was carried out with 94.1% accuracy, classification of walking was achieved with less certainty (83.3% accuracy), and detection of possible falls was made with 95.6% accuracy. Results demonstrate the feasibility of implementing an accelerometry-based, real-time movement classifier using embedded intelligence
Year
DOI
Venue
2006
10.1109/TITB.2005.856864
IEEE Transactions on Information Technology in Biomedicine
Keywords
Field
DocType
health care,classification system,accelerometer,patient monitoring,embedded systems,accelerometers,gait analysis,signal processing,indexing terms,real time
Signal processing,Computer vision,Activities of daily living,Remote patient monitoring,Embedded intelligence,Wearable computer,Accelerometer,Computer science,Gait analysis,Artificial intelligence,Classifier (linguistics)
Journal
Volume
Issue
ISSN
10
1
1089-7771
Citations 
PageRank 
References 
330
38.97
0
Authors
5
Search Limit
100330
Name
Order
Citations
PageRank
Dean M. Karantonis133741.24
Michael R. Narayanan237548.37
M. Mathie333038.97
nigel h lovell4618118.68
Branko G. Celler550281.99