Redundancy in a network centric process control system

US11153409B2 · kind B2 · utility

Assignee

• ABB Schweiz AG · CH

Inventors

• Staffan Andersson · Lund, SE
• Åke Bromö · Västerås, SE
• Anders Rune · Västerås, SE
• Mats Rågberger · Västerås, SE

Key dates

• Filing date: Feb 28, 2020
• Grant date: Oct 19, 2021
• Expiry date: Feb 28, 2040

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P90/02
• WIPO field: Control
• WIPO sector: Instruments

Abstract

A method for providing redundancy in a network centric process control system, where at least one node includes at least one control service as well as at least one middleware service for communicating in the process control system, where the control service and middleware service is each a separate executable running in a separate operating system process provided by a real time operating system thereof, wherein a first control service in a first node communicating via a first middleware service and implementing a first control function acts as an active control service for the first control function and a second control service communicating via a second middleware service and implementing the first control function acts as a standby control service for the first control function, the method including performing, by the first control service, the first control function through subscribing, via the first middleware service, to input process data of the first control function and publishing via the first middleware service, output process data of the first control function, synchronizing the first control service with the second control service, and taking over, by the second contr…