Measuring circuit
US10156458B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 6, 2017 |
| Grant date | Dec 18, 2018 |
| Priority date | — |
| Expiry date | Jul 31, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R27/26
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A measuring circuit comprising a sensing element configured to generate a measuring signal from a measuring object, a signal injector configured to generate an auxiliary signal, and an evaluation circuit comprising a first upstream amplifier with a first input connected to a first pole of the sensing element via a first signal line and a second upstream amplifier with a first input connected to a second pole of the sensing element via a second signal line. A measuring circuit with an improved reliable control of its measuring chain allowing continuous testing of the integrity of the measurement signal coming from the sensing element and/or to allow the measuring circuit to be upgradable with respect to a different sensing unit and/or evaluation unit, the first upstream amplifier comprises a second input connected to the signal injector, and the evaluation circuit comprises a first downstream amplifier having a first input connected to the signal injector and a second input connected to an output of the first upstream amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.