Method and device for evaluating displacement signals

Data processing: measuring – calibrating – or testing – Measurement system – Orientation or position

Reexamination Certificate

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Reexamination Certificate

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07912672

ABSTRACT:
A process for evaluating motion signals in three-dimensional space is disclosed. The process includes obtaining a first initial measurement value in a first initial direction which is also a first desired direction; obtaining a second initial measurement value in a second initial direction which is different from the first initial direction; calculating a second desired direction and a second determined value from the first and second initial measurement values, the second desired direction being different from the first and second initial directions; calculating a third desired direction and a third determined value from the first initial measurement value and the second determined value, the third desired direction being different from the first and second desired directions; and converting the first initial measurement value, the second and third determined values into respective first, second and third acceleration values. A device for implementing this process is also disclosed.

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Hansson G-A et al., “Validity and reliability of traxial accelerometers for inclinometry in posture analysis”, Medical and Biological Engineering and Computing, Peter Peregrinus Ltd., vol. 39, No. 4, Jul. 2001, pp. 405-413.

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