Current-based temperature measurement devices and methods
US11187593B2 · kind B2 · utility
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22Claims
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Key dates
| Filing date | Oct 31, 2018 |
| Grant date | Nov 30, 2021 |
| Priority date | — |
| Expiry date | Nov 1, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01K1/028
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A Proportional-To-Absolute-Temperature (PTAT) current source is used for high-resolution temperature measurement. The PTAT current source is coupled to a capacitor for a fixed amount of time so as to charge the capacitor to a voltage which is proportional to the current applied to the capacitor, and thus proportional to the temperature. The voltage on the capacitor is measured, and a temperature is calculated or determined from the measured voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.