Efficient architecture for interfacing redundant devices to a distributed control system
US8516296B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 4, 2011 |
| Grant date | Aug 20, 2013 |
| Priority date | — |
| Expiry date | Nov 20, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/2007
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method for interfacing redundant devices to a distributed control system, includes a first and second redundant field bus modules communicably coupled to the distributed control system and to one another via switches. A pair of redundant field devices are coupled to the switches, one FD having an address. The FBMs adopt respective roles as master FBM and tracker FBM, so that the master FBM is configured to capture data from the one FD using the address, and to pass any data changes periodically to the tracker FBM, through the switches. The master FBM is configured to point to the other field device in the event the other field device has assumed the address. The FBMs are configured to switch roles in the event communication is disrupted between the master FBM and the FD having the address.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.