Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 74 for “"Inertial sensors"”.
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Body Motion Capture Using Multiple Inertial Sensors
… generated avatar. In this thesis, a wireless inertial motion capture system consisting of a central control host and ten sensor nodes is used to capture human body movements. Each of the ten sensor nodes in the system has a tri-axis accelerometer and a tri-axis gyroscope. They are attached to …
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Agility quantification using body worn inertial sensors
… biomechanical metrics. An array of body-worn inertial sensors was used to calculate metrics that were sensitive to performance speed. Five metrics were defined (normalized number of foot contacts, stride length variance, arm swing variance, mean normalized stride frequency, and number of body …
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Understanding Variability in Older adults using Inertial Sensors
… during balance and walking tasks. Accordingly, inertial sensors are an emerging wearable technology that can facilitate noninvasive monitoring of fall prone individuals in clinical settings. This research examined the potential of inertial sensors for use in clinical settings, and evaluated …
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An Underwater Vehicle Navigation System Using Acoustic and Inertial Sensors
… methods such as acoustic positioning systems, Inertial Navigation Systems (INS), and the geophysical navigation approach are used for UUV navigation. Acoustic positioning systems utilize the characteristics of acoustic signals that have a lower absorption rate and a more extended propagation …
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Stereo Vision Based Aerial Mapping Using GPS and Inertial Sensors
The robotics field has grown in recent years to a point where unmanned systems are no longer limited by their capabilities. As such, the mission profiles for unmanned systems are becoming more and more complicated, and a demand has risen for the deployment of unmanned systems into the most complex …
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A Variable Gain Direct Digital Readout System for Capacitive Inertial Sensors
High fidelity interface circuits for capacitive accelerometers make use of feedback for signal detection but these feedback systems are limited by the sense capacitance and sensitivity of the accelerometers. This problem is addressed by a variable gain delta sigma based interface circuit that time …
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Algorithms for indoor localization based on IEEE 802.15.4-2011 UWB and inertial sensors
… a combination of IEEE 802.15.4-2011 UWB and inertial sensors. This architecture not only implements the position estimation of the object by fusing the UWB and inertial measurements, but enables the nodes in the localization network to mutually share positional and other useful information …
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A Quaternion-Based Motion Tracking and Gesture Recognition System Using Wireless Inertial Sensors
… recognition system that functions through worn inertial sensors. The system is comprised of a total of ten sensors and uses their quaternion output to map the player's motions to an onscreen character. To demonstrate the system's capabilities, a simple virtual reality game was created. A …
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A process technology for realizing integrated inertial sensors using deep reactive ion etching (DRIE) and aligned wafer bonding
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1999.
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The assessment of fatigue-related changes in stride mechanics, variability and long-range correlations in recreational and elite distance runners using foot-mounted inertial sensors
… setup consisting of a wireless foot-mounted inertial measurement unit (IMU) was capable of accurately measuring individual stride length vectors during distance running. The results showed that the sensor-based method displayed excellent levels of agreement with a 3D motion capture system as …
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Motion tracking problems in Internet of Things (IoT) and wireless networking
… internet-of-things (IoT) devices, by leveraging inertial sensors embedded in these objects, as well as wireless signals emitted (or reflected) from them. For instance, we use a combination of GPS signals and inertial sensors on drones to precisely track its 3D orientation over time, ultimately …
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Inertial measurement via dynamics of trapped particles
… and practical aspects of the particle trap as an inertial sensor. The insight motivating this approach is that a trapped particle acts like a mass on a spring, but the restoring forces are provided by electrostatic fields. Exquisitely machined physical mechanisms can be replaced by carefully tuned …
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Visual Inertial Odometry with Sparse Deep Learning
In the field of indoor navigation, visual and inertial sensors are essential to localizing a robot. Visual Inertial Odometry (VIO) systems try to figure out the position and orientation of a robot by analyzing data from cameras and inertial sensors. As state-of-the-art VIO systems achieve …
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Pedestrian localisation for indoor environments
… to indoor pedestrian tracking that uses on-body inertial sensors rather than relying on fixed infrastructure. It is demonstrated that general purpose inertial navigation algorithms are unsuitable for pedestrian tracking due to the rapid accumulation of errors in the tracked position. In practice …
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Precision navigation for aerospace applications
… and commonly uses a blend of GPS and inertial sensors. In this thesis, a navigation system is designed, developed, and tested. Several alternatives are discussed, but the ultimate design is a loosely-coupled Extended Kalman Filter using rigid body dynamics as the process with a small …
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An Evaluation of the Physical Demands of American Football Training in the NFL
… 3) showed that three commercially available inertial sensors were able to differentiate between fundamental American football actions (e.g., sprinting, change of direction, and collisions) during movement tasks in a controlled setting and may be useful for quantifying the physical demands of …
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Multi-sensor Data Fusion for Robotics Applications
… as well as increasingly miniaturized and precise sensors, Robotics is experiencing a period of significant development. New technology is making robots increasingly more autonomous. Data from different sensors can be fused and processed in real time by on-board processing units in order to make …
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A Hardware Architecture for GPS/INS-Enabled Wireless Sensor Networks
… into the use of integrated systems that combine inertial sensors with GPS receivers. This research proposes a hardware architecture for location-based wireless sensor networks. In this architecture, each sensor node consists of a GPS receiver, a reduced set of low cost …
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Direct Visual and Inertial Odometry for Monocular Mobile Platforms
Nowadays visual and inertial information is readily available from small mobile platforms, such as quadcopters. However, due to the limitation of onboard resource and capability, it is still a challenge to developing localisation and mapping estimation algorithms for small size mobile platforms. …
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Comparison of Gait Characteristics of Horses and the Effect of Farriery and Shoes
… animal welfare. Commonly utilized body-mounted inertial sensor systems can be used to measure symmetry of head and pelvic movement, but do not directly evaluate other gait characteristics important to subjective judging. More recently, triaxial hoof-mounted inertial sensor systems have been used …
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