PHED-2116EL Lecture Notes - Lecture 18: Six Degrees Of Freedom, Inverse Dynamics, Strain Gauge
14 Dec 2018
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Document Summary
Use of sensors and other instruments set record and transmit physiological data from persons or other living things. The data obtained from bio-instrumentation is used to compare outcomes: performed relative to a normal population, clinical diagnosis of pathology, determine injury risks, performance using different techniques, determine optimal performance characteristics, determine the safest movement. We measure kinematic and kinetic variables via transducers: devices that convert energy from one form to another. In human movement studies we typically convert mechanical energy to electrical energy. Typical transducers used in bio-instrumentation are: kinematics, camera systems, goniometers, accelerometers, gyroscopes, inertial motion systems, kinetics, force gauges, strain gauges/load cells, torque sensors, pressure sensors, electromyography. Changes in the distance between the surfaces changes the capacitance and the charge held between those surfaces for a given. Gyroscopes: use to measure rotational velocities, utilize the coriolis effect, capacitive plates move together or apart, cantilever beams bends and strain gauges lengthen or shorten, typically single axis.
