iit-fredericton nrc cnrc put experiments online dr. yuhong yan nrc-iit-fredericton canarie platform...

IIT-FrederictonNRC CNRC

Put Experiments Online

Dr. Yuhong Yan

NRC-IIT-Fredericton

Canarie Platform Workshop, 27 June, 2007

IIT-FrederictonNRC CNRC2

Introduction• Why and how to do experiment online

– eLearning and eScience– The state of the art and our past work

• VO: Cyberlab• The challenges


Why to Do Experiment Online• E-learning

– Experiment is one method for learning– Students can do experiment any time and from any

where– Use just a standard Web browser, no client side

installation– Online experiment is not matured as online courses

• E-Science– Share instruments and devices– Share data and computation resources– Collaborative working environment– Access to remote sensors


Major Challenges• Generic and reusable solutions for the service

providers– Propriety software and devices are difficult to

integrate and share over networks

• Easy access client side GUI and collaborative environment for the end users– Use just a standard Web browser– Use high end visualization and video conference

software

• Platforms or portals for managing the network– Resource registration and mediation– Scheduling and booking– Accounting


The State of the Art• Virtual Labs vs. Remote Labs

– Virtual lab: simulated environment– Remote lab: a real lab at the remote site

• Existing online experiments– Electronics– Mechanics– Physics– Robotics– Biology, chemistry, …

• Internet access techniques


Virtual Electronic Lab• Simulation tools

– Matlab (with Web interface)– ORCAD (use Citrix MetaFrame)– Other simulator possible


Matlab Simulation (1)


Matlab Simulation (2)


Use ORCAD (1)


Use ORCAD (2)


Remote Electronic Lab


Access Remote Lab


Example of Remote Lab


Example of Virtual and Remote Lab


Our Work in SOA Enabled Remote Lab for eLearning

Online Lab System

WebServer

12

3

SOAPMessages

Registry and Broker Server

1

SOAPMessages

service1service1

service2

service3

(With Prof. Hamadou Saliah in UQAM from 2004)


Control Remote Instruments via Web Services

• Wrap IVI and VISA Instrument as Web Services– WSDL file for operations and interface

• Serialize instrument panel• Web 2.0 techniques for data exchange between

client and Web server• Web 2.0 techniques and real time signal

display• Stateful instrument Web services• Benchmark of latency


The Relations of the Instrument I/O Standards

Instr. A Instr. B Instr. C

VISA / VISA COM

IVI COM

NI 488.2 NI VXI Others….


Operating the instrument

IAgilent33220Ptr Fgen;… ...Fgen->Output->Frequency = 2500.0; … ...

Sample code of IVI COM

… …Fgen->WriteString("FREQuency 2500")… …

Sample code of VISA COM


Digital Multimeter Graphic Interfaces

<xml>

<….>

</xml>

<xsd>

<….>

</xsd>

API Java

validates

uses

generates

XSD file (DMM_GUI.xsd)XML file (DMM_AGILENT_34401A_GUI.xml)

JAXB Java architecture for XML Binding

From IVI specifications (Interchangeable Virtual Instrument)

Java Servlet

GUIBuilder JPanel <table …>JButton <input type=“button” …>

JCheckBox <input type=“checkbox” …> JTextPane <input type=“text” …> JComboBox <select …><option>…


Web 2.0 Techniques for Data Exchange and Real Time Signal Display

Lutz TautenhahnJS Diagram Builder library

+JS DOM Script

AJAX engine

Servlet

JSON

XML

Web Interface

InstrumentWeb Service


Conclusions from Our Research• Conditions are ready

– Instruments– Communities in eLearning and eSciences

• The challenges– Generic and reusable solutions for the service

providers– Easy access and good client side GUI for the end

users– Platforms or portals for managing the network– New experiment methods


My Other Research Work on Web Services

• Self Manageable Web Service Processes– NSERC Discovery project

• Web service process monitoring and diagnosis– ICWS07, ECOWS05

• Web service process composition– ICWS06

• Formal models for Web service processes– AI Communication


VO - CyberLab• A network for connecting online labs for providing services to

end-users – Research and education labs (I know more about eLearning Labs)– Students and researchers – Via standard Web browser or high-end collaboration environment

• Individual online engineering labs– Canada: UQAM, UNB, etc.– Europe: EPFL, L3S in University of Hannover, Technical University of

Madrid, etc. – USA: iLab at MIT– South America: Brazilian partners– Asia: China?

• Existing networks– CompEduHPC (US, Europe and India)– Prolearn network (Europe)– EduSource, Lornet (Canada)


Organization of Cyberlab• Policy:

– Canadian institute will create the SOA framework and a portal server– Service portal will be used to manage the job data– Ontology and WSDL standard interface for instruments and

experiments

• Middleware– WS for integrate hardware and sensors– GT for computational resources

• CANARIE funding– Portal/platform development– Ontology and unified interface for instruments and experiments– Generic and reusable solutions for the service providers to put their

labs online– Lightweight Web 2.0 technique for data exchange and data/signal

visualization;– New devices and experiment methods for online experiments;– Online lab collaborative working environment


The CyberLab Portal• Catelog/registration of online labs• Unified lab presentation, promotion

– Ontology

• eCommerce services: booking, invoicing, reporting

• Support services for service provider– Generic tools to put labs online– Generic approach to wrap instruments and sensors

• Integrate services via workflow and BPEL


The Cyberlab Development Kit• A downloadable software package to put labs

online in half an hour– Input the instrument type/IP and ready to run– A console to monitor the instrument status and jobs– A set of Web interface for instruments– Other necessary support tools– An easy configurable framework for various

experiments

• New devices and experiment methods for online experiments


The Collaborative Environment• Remote visualization• Video conference sessions• Collaborative software

– Collaborative logs– Discussion forums– Wikis


Summary• Put eLearning and eScience labs online• Challenges

– Generic and reusable solutions for the service providers

– Easy access client side GUI and collaborative environment for the end users

– Platforms or portals for managing the network

• Canarie Platform program– Bring the communities together– Bring the research results together– Build a service platform for online labs

iit-fredericton nrc cnrc put experiments online dr. yuhong yan nrc-iit-fredericton canarie platform...

Documents