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Knee osteoarthritis (OA) can lead to pain and disability in the older population. Excessive loading has been suggested to contribute to the development of knee OA. In this paper, we investigated the frequency components in accelerometric signals of the tibia in the anterior-posterior (AP), medial-lateral (ML) and vertical (Vert) directions during walking between people with severe knee OA and asymptomatic...
The use of sensors in studies of human movement and gait is now fast gaining attention as a promising alternative to video capture systems in gait laboratories. Inertial sensors such as accelerometers and gyroscopes have been deployed to detect acceleration and angular velocities of body landmarks, from which secondary quantities such as velocity, displacement and joint angles could be inferred. The...
Monitoring patients continuously while they go about their daily activities is a challenging goal. It requires long-term recording of cardiovascular and other electrophysiological signals and contextual information such as body motion. Here we present a small, battery powered, user customisable, portable monitor capable of recording three-axial acceleration, skin temperature, and up to four bio-signals...
Some nonverbal information such as prosody are reported to be able to play a role of penalty signal in human-human and human-agent communication. In order to investigate whether other nonverbal information such as gesture can play similar role in human-robot interactive task, a pilot experiment using a directional guidance task was conducted. The results suggested that a part of ldquostoprdquo instructions...
Idiopathic toe walkers are children whose heels do not touch the ground during walking, but who do not have any neurological deficit to explain this. The stretch reflexes for these children are normal, so that the toe walking appears to be voluntary. These children often suffer social problems. Many of these children who are not treated and some during treatment, are likely to develop a dasiaBouncy...
Real-time collection of wave information is required for short and long term investigations of natural coastal processes. Current wave monitoring techniques use only point-measurements, which are practical where the bathymetry is relatively uniform. We propose a wave monitoring method that is suitable for places with varying bathymetry, such as coral reefs. Our solution uses a densely deployed wireless...
A new modelling and classification approach for human gait evaluation is proposed. The body movements are obtained using a sensor suit recording inertial signals that are subsequently modelled on a humanoid frame with 23 degrees of freedom (DOF). Measured signals include position, velocity, acceleration, orientation, angular velocity and angular acceleration. Using the features extracted from the...
Tripping and slipping falls are serious health concerns for the elderly because they incur high medical costs and can result in life threatening injuries i.e., internal bleeding. Recently there has been an increased interest in the development of portable inertial sensing devices for measuring human movement. These devices employ acceleration and angular data to obtain limb motion such as velocity...
A new approach to modelling and classification of human gait is proposed. Body movements are obtained using a sensor suit that records inertial signals that are subsequently modelled on a humanoid frame with 23 degrees of freedom (DOF). Measured signals include position, velocity, acceleration, orientation, angular velocity and angular acceleration. Using a range of concurrent features extracted from...
The aim of this paper is to present a new algorithm for target tracking within a binary sensor network. The present work is based on our previous results developed in. A novel tracking method is proposed and its performance through a very classical trajectory model is evaluated. For a given target, this algorithm provides an estimation of its velocity and then of its position. The greatest improvements...
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