Distributed control with universal program
US4672530A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 17, 1984 |
| Grant date | Jun 9, 1987 |
| Priority date | — |
| Expiry date | Dec 17, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/16
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A distributed control system controlling a plurality of subprocesses wherein each of the process control computers (44, 46, 48) executes a preprogrammed set of instructions (50-62) identical to the preprogrammed set of instructions (50-62) in the other process control computers (44, 46, 48) in the distributed control system. Inputs from field devices (76, 78, 80) are connected between each subprocess and the process control computer (44, 46, 48) providing control therefor as well as between each subprocess and the process control computer (44, 46, 48) providing redundant safety backup of the operational safety. One or more of the process control computer (44, 46, 48) in the distributed control system executes some preprogrammed set of instructions (50-62) as part of the preprogrammed set of instructions for which there are no inputs from field devices (76, 78, 80) or output control signals to field devices (76, 78, 80).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.