Non-linear sensor temperature compensation using summed temperature compensation signals
US8081006B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2006 |
| Grant date | Dec 20, 2011 |
| Priority date | — |
| Expiry date | Jul 28, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D3/0365
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sensor temperature compensation circuit that includes a sensor and non-linear temperature compensation circuit that compensates for non-linear temperature dependencies in offset and/or gain generated by the sensor. For instance, to at least partially compensate for offset temperature dependencies, a summer adds two offset compensation signals, the ratio of the second to the first being a function of temperature. The summed signal may then be multiplied by a function of temperature. The summed signal may then be used to provide the non-linear temperature compensation to the offset. Alternatively or in addition, to at least partially compensate for gain temperature dependencies, a summer adds two gain compensation signals, the ratio of the second to the first being a function of temperature. The summed signal may then be multiplied by a function of temperature. The summed signal may then be used to provide non-linear temperature compensation to the gain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.