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CBSE Workshop

CBSE Workshop. GEODAS: An Industrial Experience with Component Frameworks in DAAS D. Ravier J. Fraga, V. Orjales, A. Molano J. Serrano. Overview. CORBA CODE. CORBA WRAPPING. CORE CODE (C++/Java). Introduction to DAAS The problem The project Components in industrial, real-time domains

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CBSE Workshop

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  1. CBSE Workshop GEODAS: An Industrial Experience with Component Frameworks in DAAS D. Ravier J. Fraga, V. Orjales, A. Molano J. Serrano

  2. Overview CORBA CODE CORBA WRAPPING CORE CODE (C++/Java) • Introduction to DAAS • The problem • The project • Components in industrial, real-time domains • Conclusion Performance Platform independence Generality

  3. DAAS & NDE • Data Acquisition and Analysis Systems • Multiple uses: • Process control • Automotive • Avionics • Medical • Scientific, etc. • Typical uses do not require high throughput • Example: NDE • Non-destructive essays

  4. DAAS • Typical architecture of a DAAS calibration drivers storage reports electronics configuration on-line analysis off-line evaluation

  5. NDE • NDE: Non-Destructive Essays • High performance DAAS • On-line & Off-line processing • Sampling rate: >4 MBs • Example • Hard process control (NPP): • ~30000 signals * 4 bytes/signal * 10 Hz  1 MB/s • Typical current END UT system: • 4 UT channels * 256 bytes/sample * 4 KHz  4 MB/s

  6. The problem • Many kinds of sensors (and data) • Ultrasound, Eddy current, Video, X-Ray, ... • Many kinds of output...

  7. The problem • Decreasing time to market • From months to weeks • High dependence on electronics • Repeating common tasks • Electronics configuration • Data storage • Signal processing • No performance control • Increasing troughput requisites • Up to 10 MBs in the next 2-3 years

  8. The solution • Decompose the architecture of a DAAS • Develop a framework of components • Extendable • Generic • Good performance • Platform independent

  9. The alternatives • SCADA/OPC: Process control focused • NI’s LabView: • Virtual Instrument: Good Idea • Many cards available • But... Not ready for massive data storage • Not open standard • Other systems: • PANORAMA, TestPoint, ADLIB, DASYLab, ULTRAMAP... • Hardware-specific, closed, not portable.

  10. The project OPENGL JAVA XML DOMAIN EXPERT ELECTRONICS REAL-TIME CORBA • EU funded project: GEODAS • 2-year long: Jan 2000 - Dec 2001 • Three partners: • Goal: “development of Reusable, Generic Components for the implementation of domain- specificDAAS requiring management of high data volumes under real-time constraints”

  11. Objectives • Independence from electronics • Performance management • Operation management • Platform independence • Real-time performance • High data throughput • Multiple clients, on-line & off-line evaluation • Whole framework or independent components

  12. Component framework COMPONENTS Simulator Generic Virtual Electronic Components Data-Intensive Acquisition CORBA Storage Performance Management Card Driver Data Base GEODAS FRAMEWORK Operation Management GUI Analysis & Evaluation Acquisition Hardware Acquisition Platform

  13. Components • GUI layer • XML report tool • Core components • Operation management • Performance management • Analysis & evaluation • Acquisition • Data Storage • Virtual Electronics • CORBA interfaces • Implementation in C++ & Java

  14. Component description CORBA CODE CORBA WRAPPING CORE CODE (C++/Java) • CORBA interfaces • Internals in C++ and/or Java • Deployed as DLL’s • Using CORBA services for management: • Naming Service • Implementation Repository

  15. Architecture Acquisition node Processing node CORBA RT Event service • C++ framework to create virtual instruments • Data provided by drivers or emulator • Java/OpenGL GUI • Specialised signal analysis • Massive storage service • XML report generation • On-line Performance management • Operation management

  16. Configurability OFF-LINE REMOTEEVALUATION STORAGE MULTIPLE CLIENTS PROCESSING REMOTESTORAGE PROCESSING PROCESSING EVALUATION ACQ ACQ PROCESSING STORAGE PROCESSING • Many possible configurations

  17. Status • Components implemented • First prototypes • Integration • Trials • UT NDE application • Power plant simulation historian • Exploitation & dissemination

  18. Issues • Performance • RT event service • Good for multicast • Bad for performance • Solution: Move to Streams (A/V) • CORBA between local objects • Solution: Dynamic library version • Compromise with platform independence and generality

  19. Future work • End of project: December 2001 • Afterwards: • CCM • Streams • Java for Real Time • Adding CORBA Security Service • ...

  20. Components in RT industry • CBSE is hard for engineers • Modularisation is difficult • Components hard to distinguish from libraries • Technology not mature in the market • CCM, JavaBeans, COM/.Net • QoS missing from most products • Performance vs. Generality vs. Platform Independence • Java for Real Time? • RT-CORBA: Not many implementations

  21. Conclusions • Current high-performance DAAS are still highly tailored • GEODAS is introducing CBSE in this domain • Component market technology is not 100% ready for RT applications • Problems compromising performance with generality and platform independence Performance Platform independence Generality

  22. Contacts • José Serrano • Mail: Avda. Montes de Oca, 1. S.S. de los Reyes , Madrid (Spain) 28709 • E-mail: jlserrano@tecnatom.es • Phone: (+34) 91 6598600 ext. 8134 • Web • http://www.cesat.es/geodas Thanks for your attention!

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