Probabilistic locomotion mode recognition with wearable sensors

Uriel Martinez Hernandez, Imran Mahmood, Abbas A. Dehghani-Sanij

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)
53 Downloads (Pure)

Abstract

Recognition of locomotion mode is a crucial process for control of wearable soft robotic devices to assist humans in walking activities. We present a probabilistic Bayesian approach with a sequential analysis method for recognition of locomotion and phases of the gait cycle. Our approach uses recursive accumulation of evidence, as biological systems do, to reduce uncertainty present in the sensor measurements, and thus improving recognition accuracy. Data were collected from a wearable sensor, attached to the shank of healthy human participants, from three locomotion modes; level-ground walking, ramp ascent and ramp descent. We validated our probabilistic approach with recognition of locomotion in steady-state and gait phases in transitional states. Furthermore, we evaluated the effect, in recognition accuracy, of the accumulation of evidence controlled by increasing belief thresholds. High accuracy results achieved by our approach, demonstrate its potential for robust control of lower limb wearable soft robotic devices to provide natural and safe walking assistance to humans.
Original languageEnglish
Title of host publicationConverging Clinical and Engineering Research on Neurorehabilitation II
PublisherSpringer
Pages1037-1042
Number of pages6
ISBN (Print)978-3-319-46668-2
DOIs
Publication statusPublished - 1 Jun 2017

Publication series

NameBiosystems and Biorobotics
PublisherSpringer
Volume15

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