Assembly with at least two redundant analog input units for a measurement current
US11079409B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2017 |
| Grant date | Aug 3, 2021 |
| Priority date | — |
| Expiry date | Apr 7, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/21123
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
At least two redundant analog input units for a measurement current have analog inputs which are connected in parallel and upon which voltage measuring devices directly lie to convert respectively applied voltages into a digital measurement value, wherein in order to detect errors, in particular in order to detect wire breakage, each analog input unit compares its generated measurement value with a threshold and outputs an error message if a measurement value is detected that falls below the threshold, where if the analog input of the analog input unit is in the low-resistance state, then the at least one other analog input unit is additionally caused to assume a current-measuring function and switch the analog input of the analog input unit to a low-resistance state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.