RT info:eu-repo/semantics/article
T1 Custom IMU-Based Wearable System for Robust 2.4 GHz Wireless Human Body Parts Orientation Tracking and 3D Movement Visualization on an Avatar
A1 González Alonso, Javier
A1 Oviedo Pastor, David
A1 Aguado Hernández, Héctor José
A1 Díaz Pernas, Francisco Javier
A1 González Ortega, David
A1 Martínez Zarzuela, Mario
K1 body tracking; inertial sensor; wearable sensor; custom; do-it-yourself; motion capture
K1 3325 Tecnología de las Telecomunicaciones
AB Recent studies confirm the applicability of Inertial Measurement Unit (IMU)-based systems for human motion analysis. Notwithstanding, high-end IMU-based commercial solutions are yet too expensive and complex to democratize their use among a wide range of potential users. Less featured entry-level commercial solutions are being introduced in the market, trying to fill this gap, but still present some limitations that need to be overcome. At the same time, there is a growing number of scientific papers using not commercial, but custom do-it-yourself IMU-based systems in medical and sports applications. Even though these solutions can help to popularize the use of this technology, they have more limited features and the description on how to design and build them from scratch is yet too scarce in the literature. The aim of this work is two-fold: (1) Proving the feasibility of building an affordable custom solution aimed at simultaneous multiple body parts orientation tracking; while providing a detailed bottom-up description of the required hardware, tools, and mathematical operations to estimate and represent 3D movement in real-time. (2) Showing how the introduction of a custom 2.4 GHz communication protocol including a channel hopping strategy can address some of the current communication limitations of entry-level commercial solutions. The proposed system can be used for wireless real-time human body parts orientation tracking with up to 10 custom sensors, at least at 50 Hz. In addition, it provides a more reliable motion data acquisition in Bluetooth and Wi-Fi crowded environments, where the use of entry-level commercial solutions might be unfeasible. This system can be used as a groundwork for developing affordable human motion analysis solutions that do not require an accurate kinematic analysis.
PB MDPI
YR 2021
FD 2021
LK https://uvadoc.uva.es/handle/10324/64341
UL https://uvadoc.uva.es/handle/10324/64341
LA eng
NO González-Alonso J, Oviedo-Pastor D, Aguado HJ, Díaz-Pernas FJ, González-Ortega D, Martínez-Zarzuela M. Custom IMU-Based Wearable System for Robust 2.4 GHz Wireless Human Body Parts Orientation Tracking and 3D Movement Visualization on an Avatar. Sensors. 2021; 21(19):6642. https://doi.org/10.3390/s21196642
DS UVaDOC
RD 23-dic-2024