Sensors | |
Smart Shoe-Assisted Evaluation of Using a Single Trunk/Pocket-Worn Accelerometer to Detect Gait Phases | |
Alessandro Tognetti1  Gigliola Vaglini1  Nicola Carbonaro1  MarioG. C. A. Cimino1  Marco Avvenuti1  Guglielmo Cola1  | |
[1] Dipartimento di Ingegneria dell’Informazione, University of Pisa, Largo Lazzarino 1, 56122 Pisa, Italy; | |
关键词: accelerometer; foot contact detection; gait analysis; gait phase detection; pocket-worn; smart shoe; wearable sensor; | |
DOI : 10.3390/s18113811 | |
来源: DOAJ |
【 摘 要 】
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.
【 授权许可】
Unknown