Darwin Gouwanda

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Injury to a lower limb may disrupt natural walking and cause asymmetrical gait, therefore assessing the gait asymmetry has become one of the important procedures in gait analysis. This paper proposes the use of wireless gyroscopes as a new instrument to determine gait asymmetry. It also introduces two novel approaches: normalized cross-correlations(More)
Gait events detection allows clinicians and biomechanics researchers to determine timing of gait events, to estimate duration of stance phase and swing phase and to segment gait data. It also aids biomedical engineers to improve the design of orthoses and FES (functional electrical stimulation) systems. In recent years, researchers have resorted to using(More)
Identifying walking gait events is important in gait analysis. In particular, heel-strike and toe-off are commonly used to define the stance phase and swing phase in normal human walking gait cycle. They are used to segment a stream of human motion data into discrete and meaningful sections that can be analyzed and compared with available literatures. This(More)
A method for assessing balance, which was sensitive to changes in the postural control system is presented. This paper describes the implementation of a force-sensing platform, with force sensing resistors as the sensing element. The platform is capable of measuring destabilized postural perturbations in dynamic and static postural conditions. Besides(More)
A force-sensing platform (FSP), sensitive to changes of the postural control system was designed. The platform measured effects of postural perturbations in static and dynamic conditions. This paper describes the implementation of an FSP using force-sensing resistors as sensing elements. Real-time qualitative assessment utilized a rainbow color scale to(More)
A real-time gait monitoring system that incorporates an immediate and periodical assessment of gait asymmetry is described. This system was designed for gait analysis and rehabilitation of patients with pathologic gait. It employs wireless gyroscopes to measure the angular rate of the thigh and shank in real time. Cross-correlation of the lower extremity(More)
Human gait events are crucial in gait analysis. Proper identification of gait events enables derivation of various spatio-temporal parameters and segmentation of the data captured by motion capture systems. Rapid growth of miniature motion sensors, such as gyroscope, has allowed human motion to be captured continuously in real-time and in natural(More)
The Precision Smart Force Platform is divided into three main sections; the platform, data acquisition circuit, and software. The purpose of this research work is to design and to develop a precision force platform, which can be widely used to measure vertical ground reaction force of the human body in various daily activities i.e. walking, jogging and(More)
This paper presents a novel design of a dynamic instrumented platform for observing the human postural sway. The body sway parameters were recorded using a force platform that was constructed with FSRs, and was fitted snugly on the surface of the dynamic platform. There are two conditions being studied in this paper, subjects are required to try and achieve(More)