Show simple item record

dc.contributor.authorRuiz García, Isidoro 
dc.contributor.authorNavarro Marchal, Ismael
dc.contributor.authorOcaña Wilhelmi, Francisco Javier 
dc.contributor.authorPalma López, Alberto José 
dc.contributor.authorGómez López, Pablo Jesús 
dc.contributor.authorCarvajal Rodríguez, Miguel Ángel
dc.identifier.citationRuiz-García, I.; Navarro-Marchal, I.; Ocaña-Wilhelmi, J.; Palma, A.J.; Gómez-López, P.J.; Carvajal, M.A. Development and Evaluation of a Low-Drift Inertial Sensor-Based System for Analysis of Alpine Skiing Performance. Sensors 2021, 21, 2480. []es_ES
dc.descriptionThis research has been funded by Junta de Andalucía (Spain) under project B-TIC-468- UGR18. The project was partially supported by European Regional Development Funds (ERDF).es_ES
dc.description.abstractIn skiing it is important to know how the skier accelerates and inclines the skis during the turn to avoid injuries and improve technique. The purpose of this pilot study with three participants was to develop and evaluate a compact, wireless, and low-cost system for detecting the inclination and acceleration of skis in the field based on inertial measurement units (IMU). To that end, a commercial IMU board was placed on each ski behind the skier boot. With the use of an attitude and heading reference system algorithm included in the sensor board, the orientation and attitude data of the skis were obtained (roll, pitch, and yaw) by IMU sensor data fusion. Results demonstrate that the proposed IMU-based system can provide reliable low-drifted data up to 11 min of continuous usage in the worst case. Inertial angle data from the IMU-based system were compared with the data collected by a video-based 3D-kinematic reference system to evaluate its operation in terms of data correlation and system performance. Correlation coefficients between 0.889 (roll) and 0.991 (yaw) were obtained. Mean biases from -1.13 degrees (roll) to 0.44 degrees (yaw) and 95% limits of agreements from 2.87 degrees (yaw) to 6.27 degrees (roll) were calculated for the 1-min trials. Although low mean biases were achieved, some limitations arose in the system precision for pitch and roll estimations that could be due to the low sampling rate allowed by the sensor data fusion algorithm and the initial zeroing of the gyroscope.es_ES
dc.description.sponsorshipJunta de Andalucia European Commission B-TIC-468UGR18es_ES
dc.description.sponsorshipEuropean Commissiones_ES
dc.rightsAtribución 3.0 España*
dc.subjectInertial sensores_ES
dc.subjectKinematics es_ES
dc.subjectAlpine skiinges_ES
dc.subjectPhotogrammetry 3Des_ES
dc.titleDevelopment and Evaluation of a Low-Drift Inertial Sensor-Based System for Analysis of Alpine Skiing Performancees_ES

Files in this item


This item appears in the following Collection(s)

Show simple item record

Atribución 3.0 España
Except where otherwise noted, this item's license is described as Atribución 3.0 España