Digital output unit
US6393053B1 · kind B1 · utility
3Cited by
5References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 31, 2000 |
| Grant date | May 21, 2002 |
| Priority date | — |
| Expiry date | May 31, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/58
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
To enable electrical isolation, conventional digital input units have a first and a second optocoupler for each input channel. One optocoupler is provided to transmit the input signal, i.e., to transmit the status information logical “0” and logical “1”, while the other optocoupler is provided to transmit wire breakage information to a wire breakage monitoring unit which monitors the lines connected to the input circuit. A digital input unit is proposed which has only one optocoupler for transmitting the status and wire breakage information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.