1Andrea Schröder Germany Session 3 – Block 2 – Update

Barcelona 12-15 May 2003

GbR mbH ©

Web-based supervisory control and data acquisition

Andrea Schröder (FGH), Michael Schwan (FGH), David Leal (CAESAR Systems), Sönke Michelsen (E.ON Netz GmbH), Harald Braun (Integrierte Informationssysteme GmbH), Tor Sannes (Powel ASA)

2Andrea Schröder Germany Session 3 – Block 2 – Update

Barcelona 12-15 May 2003

GbR mbH ©

Motivation• State of the art

– Proprietary SCADA technologies

– Inefficient handling of structured numeric data on the Web

• Future– Low-cost, generic architecture for web based SCADA

applications

– New Web data type for bulk numeric SCADA data

3Andrea Schröder Germany Session 3 – Block 2 – Update

Barcelona 12-15 May 2003

GbR mbH ©

Structured semantic data blockExtract and download subsets

variables

positionsstates/times

semantics

Gigabytes of structured

data

4Andrea Schröder Germany Session 3 – Block 2 – Update

Barcelona 12-15 May 2003

GbR mbH ©

Summary

• Generic ontology for the engineering domain is finally available on the Web

• Application specific ontologies for arbitrary SCADA applications can be build on top

• Semantic interface grants access to data of the Web data-type and ensures an efficient handling of bulk numeric data

Substitution of proprietary SCADA systems