title: Multisensor approach to walking distance estimation with foot inertial sensing.
abstract: Walking distance estimation is an important issue in areas such as gait analysis, sport training or pedestrian localization. A natural location for portable inertial sensors for gait monitoring is to attach them to the user shoes. Step length can be computed by means of a biaxial accelerometer and a gyroscope on the sagittal plane. But estimations based on the direct signal integration are prone to error. This paper shows the results achieved by using a multisensor model approach to reduce uncertainty. Unbounded growth of error is reduced by means of sensor fusion techniques. The method has been tested, and early experimental results show that it provides an estimation of the walking distance with a standard deviation smaller than with single IMU similar systems.
authors.affiliation: Multisensor Systems & Robotics Lab (SiMuR), Electrical Eng. Dept., University of Oviedo, Viesques, Ed. 2, 33204 Gijón, Spain. simur@isa.uniovi.es
authors.forename: Juan C
authors.initials: JC
authors.lastname: Alvarez
authors.forename: Rafael C
authors.initials: RC
authors.lastname: González
authors.forename: Diego
authors.initials: D
authors.lastname: Alvarez
authors.forename: Antonio M
authors.initials: AM
authors.lastname: López
authors.forename: Javier
authors.initials: J
authors.lastname: Rodríguez-Uría
mesh_terms: D000054:Acceleration; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005080:Exercise Test / Q000295:instrumentation*; D005528:Foot / Q000502:physiology*; D006801:Humans; D018670:Monitoring, Ambulatory / Q000295:instrumentation* / Q000379:methods; D005082:Physical Exertion / Q000502:physiology*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014159:Transducers; D016138:Walking / Q000502:physiology*