Patent · US Active

In-situ bias correction for MEMS accelerometers

US9874581B2 · kind B2 · utility

8Cited by
24References
19Claims
0Family size

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Key dates

Filing dateNov 24, 2015
Grant dateJan 23, 2018
Priority date—
Expiry dateApr 29, 2036

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01P15/131
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

In some examples, an accelerometer may self-calibrate while in use by setting a scale factor of the accelerometer to a first value; while the scale factor of the accelerometer is set to the first value, obtaining a first acceleration value; setting the scale factor of the accelerometer to a second value; while the scale factor of the accelerometer is set to the second value, obtaining a second acceleration value; based on the first acceleration value and the second acceleration value, determining a bias correction value; obtaining a third acceleration value; and correcting the third acceleration value based on the bias correction value.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.