Sensor-based orientation system
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United States of America Patent
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Dec 16, 2014
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app pub date -
Jul 8, 2011
filing date -
Mar 15, 2006
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Abstract
A method for measuring positional changes of an object, including rotation about any or all of three axes, using linear accelerometers. There is disclosed a method of using a linear accelerometer to integrate two 3D linear accelerometers in order to measure and supply for further use six-dimensional information, that is, translation in three dimensions and rotation about three axes. Two linear accelerometer sensors are used to determine all but rotation about an imaginary axis between the accelerometers. Output from a third accelerometer may be used to generate the data needed to determine rotation about the imaginary axis. The need for a gyroscope for detecting changes in heading (i.e., yaw or azimuth) may therefore be avoided.
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