Method and apparatus for calibration of sensor signals
US7571065B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 29, 2007 |
| Grant date | Aug 4, 2009 |
| Priority date | — |
| Expiry date | May 29, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D3/0365
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method is disclosed for providing calibration of sensor signals in a sensor having a measuring sensor and a reference sensor. The method includes receiving a sensor signal and a reference signal from the measuring sensor and the reference sensor, respectively. The method further includes providing a first compensation signal to the sensor signal based on a gain characteristic and providing a second compensation signal to the reference signal based on the gain characteristic and an offset characteristic; combining the first compensation signal and the sensor signal, and the second compensation signal and the reference signal to create a compensated sensor signal; and, adjusting the compensated signal for temperature effects by coupling a component having a high thermal coefficient to the sensor. An apparatus is also described herein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.