Data processing: measuring – calibrating – or testing – Calibration or correction system – Sensor or transducer
Reexamination Certificate
2008-09-29
2010-11-16
Bui, Bryan (Department: 2863)
Data processing: measuring, calibrating, or testing
Calibration or correction system
Sensor or transducer
C073S514010
Reexamination Certificate
active
07835880
ABSTRACT:
A method is disclosed in this invention for calibrating an offset Voffsetand sensitivity Vsensitivityfor an accelerometer implemented in a level gauge having a known value of an offset angle θΔand a known value of a relative angle between top-and-bottom surface θs. The method includes a step of placing the level gauge implemented with the accelerometer on a table-top surface having a tilt angle θ1and measuring a tilt angle θFfrom the level gauge and an output voltage VFfrom the accelerometer, then rotating the level gauge 180 degrees on the table-top surface along a perpendicular axis relative to the table top surface and measuring a tilt angle θBfrom the level gauge and measuring an output voltage VBfrom the accelerometer. Then, the method proceeds with a step of flipping the level gauge upside down on the table-top surface and measuring a tilt angle θRfrom the level gauge and an output voltage VRfrom the accelerometer for calculating a tilt angle θ1of the table-top surface and the offset Voffsetand sensitivity Vsensitivityof the accelerometer.
REFERENCES:
patent: 7013207 (2006-03-01), Majstorovic et al.
patent: 2006/0251334 (2006-11-01), Oba et al.
patent: 2006/0272413 (2006-12-01), Vaganov et al.
patent: 2009/0056411 (2009-03-01), Goujon et al.
Bui Bryan
IMU Solutions, Inc.
Lin Bo-In
LandOfFree
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