Sensor-based orientation system
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United States of America Patent
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Aug 30, 2011
Grant Date -
Sep 24, 2009
app pub date -
Apr 20, 2009
filing date -
Mar 15, 2006
priority date (Note) -
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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 other 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 one of the variables in the six degrees of freedom. Output from a third accelerometer generates the data need to determine a sixth, rotational, degree of freedom. The need for a gyroscope for detecting changes in heading (i.e., yaw or azimuth) may therefore be avoided.
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