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Sensors 2018, 18(11), 3811; https://doi.org/10.3390/s18113811

Smart Shoe-Assisted Evaluation of Using a Single Trunk/Pocket-Worn Accelerometer to Detect Gait Phases

1
Dipartimento di Ingegneria dell’Informazione, University of Pisa, Largo Lazzarino 1, 56122 Pisa, Italy
2
Research Center “E. Piaggio”, University of Pisa, Largo Lucio Lazzarino 1, 56122 Pisa, Italy
This paper is an extended version of our paper published in Avvenuti, M.; Carbonaro, N.; Cimino, M.G.C.A.; Cola, G.; Tognetti, A.; Vaglini, G. Smart Shoe-Based Evaluation of Gait Phase Detection Accuracy Using Body-Worn Accelerometers. In proceedings of the 7th International Conference, MobiHealth 2017, Vienna, Austria, 14–15 November 2017.
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Authors to whom correspondence should be addressed.
Received: 21 September 2018 / Revised: 29 October 2018 / Accepted: 3 November 2018 / Published: 7 November 2018
(This article belongs to the Special Issue Wearable Sensors for Gait and Motion Analysis 2018)
Full-Text   |   PDF [807 KB, uploaded 7 November 2018]   |  

Abstract

Wearable sensors may enable the continuous monitoring of gait out of the clinic without requiring supervised tests and costly equipment. This paper investigates the use of a single wearable accelerometer to detect foot contact times and estimate temporal gait parameters (stride time, swing and stance duration). The experiments considered two possible body positions for the accelerometer: over the lower trunk and inside a trouser pocket. The latter approach could be implemented using a common smartphone. Notably, during the experiments, the ground truth was obtained by using a pair of sensorized shoes. Unlike ambient sensors and camera-based systems, sensorized shoes enable the evaluation of body-worn sensors even during longer walks. Experiments showed that both trunk and pocket positions achieved promising results in estimating gait parameters, with a mean absolute error below 50 ms. View Full-Text
Keywords: accelerometer; foot contact detection; gait analysis; gait phase detection; pocket-worn; smart shoe; wearable sensor accelerometer; foot contact detection; gait analysis; gait phase detection; pocket-worn; smart shoe; wearable sensor
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Avvenuti, M.; Carbonaro, N.; Cimino, M.G.C.A.; Cola, G.; Tognetti, A.; Vaglini, G. Smart Shoe-Assisted Evaluation of Using a Single Trunk/Pocket-Worn Accelerometer to Detect Gait Phases. Sensors 2018, 18, 3811.

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