Patent ID: 7533569
Filing Date: 2009-05-19
Classification: G01C,G01P

Abstract:
1. A method for determining changes in orientation of an object in six degrees of freedom, comprising: providing first and second linear accelerometers disposed on an imaginary axis relative to the object; providing a third linear accelerometer disposed off the imaginary axis relative to the object; measuring, with the first linear accelerometer, a first linear movement of the object in relation to an x-y-z coordinate system; measuring, with the second linear accelerometer, a second linear movement of the object in relation to the x-y-z coordinate system; measuring, with the third linear accelerometer, a third linear movement of the object in relation to the x-y-z coordinate system; determining, with measurements from the first, second and third linear accelerometers, a change in position of the object; and determining, with measurements from the first, second and third linear accelerometers, a change in orientation of the object.