using rockwell arena
TRANSCRIPT
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Using Rockwell Arena® for Simulating RFID-Enabled Supply Chains Arena User Group Meeting 2008
Stefan Wehrmeyer
Hasso Plattner Institute for IT-Systems Engineering Potsdam, Germany
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Agenda
■ The Hasso Plattner Institute
■ Research Group of Prof. Hasso Plattner
■ Processing of Large-scale Data in the Pharmaceutical Supply Chain
■ The Need for real Data in Software Engineering
■ Arena in Teaching and Research at the Research Group
■ Next Steps
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HPI – Hasso Plattner Institute
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© Jan Oberst
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First National IT-Summit at HPI
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■ Hasso Plattner Institute for IT-Systems Engineering – HPI – is located in Potsdam. It was founded in October 1998
■ The institute is completely financed by the foundation of Hasso Plattner, one of the founders of SAP
■ Over 20 years foundation pays more then 200 Million Euro for HPI
■ HPI is affiliated with the State University of Potsdam (“An-Institut”)
Hasso Plattner Institute
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HPI – Teaching
■ HPI offers two university level programs of study „IT-Systems Engineering“ with international accepted degrees
□ Bachelor of Science (3 years, about 80 students per year) and
□ Master of Science (2 years, about 60 students per year)
■ Students are enrolled at the (state) University of Potsdam
■ At time, about 420 of the best talented IT students are enrolled at HPI
■ Until now, already 300 Bachelors and 100 Masters graduated
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HPI – Cooperations and Bachelor Projects
■ Cooperation with government institutions, industry (SAP, IBM, MS, Software AG) and universities (Stanford, MIT)
■ For teaching practical IT skills and experiences students have to pass a so-called Bachelor project □ in teams of 6-8 students have to
solve a complex software task for a third party from industry or government
□ duration: 1 year, 2nd semester full time
□ teams are supervised by a professor and his research group
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HPI – Partners of Bachelor-Projects
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HPI Neighborhood: HassoPlattnerVentures
■ In 2005, Hasso Plattner founded Hasso Plattner Ventures (HPV)
■ HPV is a new, in Germany unique combination between a venture capital fond and a business incubator for young IT-companies
■ HPV is located on the HPI campus to collaborate easily…
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Agenda
■ The Hasso Plattner Institute
■ Research Group of Prof. Hasso Plattner
■ Processing of Large-scale Data in the Pharmaceutical Supply Chain
■ The Need for real Data in Software Engineering
■ Arena in Teaching and Research at the Research Group
■ Next Steps
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Enterprise Platform and Integration Concepts Prof. Dr. Hasso Plattner / Dr. Alexander Zeier
Research focus on the technical aspects of enterprise software and design of complex applications:
■ Main Memory Based Data Management for Enterprise Applications
■ Human-centered Software Design Processes
■ Real-time Integration of RFID Technology in Enterprise Systems
■ Maintenance and Evolution of SOA in Enterprise Platforms
HPI – Research Group EPIC
Partner of Stanford Center for Design
Research
Partner of MIT in Supply Chain Innovation
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■ Memory-Based Data Management for Enterprise Applications
□ In-Memory Column Databases for rapid joins with business-relevant large-scale enterprise data
■ Maintenance and Evolution of SOA Systems
□ Investigating the maintenance phase of the software lifecycle for SOA Systems
■ RFID and Enterprise Platforms
□ Research in Supply Chain Management with RFID-Technology
EPIC: Current Research Projects
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Agenda
■ The Hasso Plattner Institute
■ Research Group of Prof. Hasso Plattner
■ Processing of Large-scale Data in the Pharmaceutical Supply Chain
■ The Need for real Data in Software Engineering
■ Arena in Teaching and Research at the Research Group
■ Next Steps
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Pharmaceutical Supply Chain in the US
■ One of the most complex supply chains
■ Top 10 producers: 60% market share in 2004
■ Wholesale Distributors:
□ less than 50 companies
□ Top 3: 90% market share
■ 3.2 billion prescriptions per year
□ market of over $ 200 billion
Source: “Modeling supply chain network traffic“ (Williams et al.) The Health Strategies Consultancy & IMS Health Picture by NVinacco (flickr)
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ePedigree
■ 10% of pharmaceuticals are counterfeit
□ $32 billion dollar industry
■ Pedigree legislation
□ makes the supply chain traceable
□ makes every trade partner sign off on every drug package
□ electronic handling of pedigrees advisable
■ ePedigree
□ Item-Based Tracking
□ Track & Trace via Electronic Product Code (EPC)
□ Favorable Technology: RFID
Source: “Modeling supply chain network traffic“ (Williams et al.)
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The Pharmaceutical Supply Chain
Raw material A in barrel 9 Raw material B in barrel 3 Delivered on Truck 33
From Chemical Supplier X, Truck 33, Barrel 3 and 9 ACME Aspirin, produced with A and B To Distributor Z on Truck 25
Delivery of ACME Aspirin 10:17 AM on Truck 25 Left stock 8:47 PM on Truck 76
ACME Aspirin taken from shelf Pedigree:
Truck 76 from Z Truck 25 from ACME Truck 33 from X
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Arena User Meeting 2008 | Using Rockwell Arena® for Simulating RFID-Enabled Supply Chains Source: Auto-ID Labs, Koh et al. 2003
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EPCglobal Network
■ EPCglobal: a joint venture aiming at creating a standard for sharing RFID data over the internet
■ The EPCglobal Network consists of
□ Electronic Product Codes (EPC)
□ Object Naming Service (ONS)
□ EPC Information Systems (EPCIS)
□ Discovery Services
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Electronic Product Code
■ Every product tagged with an EPC can be uniquely identified
□ as opposed to knowing the manufacturer or the product class
■ EPCs are used on RFID-Tags and 2D-Barcodes
■ Possibilities
□ finding information related to an EPC-tagged item
□ tracking an item through the supply chain
□ detecting irregularities and counterfeits
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Object Naming Service, EPC Information Services and Discovery Services
■ ONS is based on URNs and the Domain Name System
□ query with an EPC to get the URL of the manufacturer’s EPCIS
■ EPCIS enables sharing of EPC-related data within and across enterprises: □ to gain a shared view on EPC-tagged items
□ to improve business processes
□ to find new business opportunities
■ Discovery Services
□ ONS only gives manufacturer’s EPCIS
□ finding all members of the supply chain that were in touch with a given EPC
□ non-trivial architecture, not yet defined
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EPCglobal Network Architecture
EPCIS producer
drug (with EPC)
ONS
EPCIS distributor
EPCIS pharmacy
Discovery Service (to be defined) URL
EPC
XML
EPC
List of URLs
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Research at EPIC
■ Huge amount of data exchange between EPCglobal components
□ questions of scalability and performance
■ Integration into existing middleware
□ testing RFID-middleware as Software as a Service (SaaS)
■ Discovery Service Architecture undefined
□ examining different possibilities
□ comparison of approaches
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Agenda
■ The Hasso Plattner Institute
■ Research Group of Prof. Hasso Plattner
■ Processing of Large-scale Data in the Pharmaceutical Supply Chain
■ The Need for real Data in Software Engineering
■ Arena in Teaching and Research at the Research Group
■ Next Steps
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Simulation in Software Engineering
■ Different approaches for an architecture are possible
□ Implementation of each is not feasible
■ For modularized, decoupled architectures in SOA environments
■ Simulation of different possibilities based on
□ benchmarks of the surrounding components
□ knowledge of the framework in use
□ other values (e.g. network latency)
■ Simulation of message passing and remote procedure calls (RPCs)
■ Gives indicators for the behavior of the architecture under realistic circumstances
■ Applies here, too:
□ Simulation does not make decisions, it makes decisions easier.
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Software Tests with normal test data
■ Usual Software Tests are not realistic
□ Either test data is pulled by the software
□ Or a script pushes data into the software
■ Tests depend mostly on the data itself
□ Only useful for bug-fixing and stability tests
◊ “Can my software handle this data?”
□ “Can my software handle this much data in this much time?”
◊ More complex, still manageable with self-made tools
“Can my software handle a specific amount
and type of data based on multiple schedules?”
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Software Tests with realistic data generation
■ Data is generated by the simulation software
■ Simulation software provides environment for:
□ Scheduled data input
□ Data input based on probabilities
□ Conditional data input
□ Detailed statistics and evaluation
■ Simulation based data generation automatically covers:
□ Best case, worst case, average case
□ Data that might have been forgotten
□ Data input behavior that might not have been expected
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Software Tests with Simulation Data
■ Useful if software integrates into a complex process
■ Good: simulation model exists beforehand
■ Problem: Interface between Arena and own software
□ writing test data to disk, read in later
□ VBA-module makes HTTP-Request
◊ Easy to integrate calls in times of SOA and REST,SOAP,…
■ The EPCglobal Network is a perfect candidate to be tested with simulation data from the Pharmaceutical Supply Chain!
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Agenda
■ The Hasso Plattner Institute
■ Research Group of Prof. Hasso Plattner
■ Processing of Large-scale Data in the Pharmaceutical Supply Chain
■ The Need for real Data in Software Engineering
■ Arena in Teaching and Research at the Research Group
■ Next Steps
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EPIC: Researching the EPCglobal Architecture
■ RFID-Technology enables the exchange of huge amounts of data
■ Architecture of the EPCglobal Network is not finished
■ Many research is conducted in the area of:
□ Scalability and Performance
□ Authorization, Authentication and Privacy Issues
□ Integration into existing middleware
■ EPIC research in the area of Scalability and Performance
□ Testing of existing components
□ Prototyping of components
□ Integration of these components
□ Benchmarking with several instances in virtual machines
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Integrating Arena with RFID-Infrastructure
■ RFID-Infrastructure in a company
□ Items with EPC
□ Readers
□ Middleware
□ Internal System (e.g. ERP)
□ EPCIS
■ Actors from outside
□ Query and Discovery
■ Arena acts as an RFID-Reader
□ testing the setup with simulated readers
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Integrating Arena with SAP Auto-ID
■ SAP Auto-ID Infrastructure (AII)
□ component of the SAP NetWeaver platform
□ enables communication between RFID-readers and
◊ the SAP R/3 software
◊ mySAP SCM solution
◊ other SAP Enterprise Resource Planning software
■ Goal: simulation of read-events
□ AII manages read-events in device control middleware
□ HTTP-Interface available
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Combining Arena with CrossTalk
■ CrossTalk by noFilis is a device management middleware
□ part of the SAP Auto-ID Infrastructure (AII)
□ accepts read-events from RFID-devices
□ acts as a filter and device controller
■ Arena simulates multiple RFID-readers and sends read-events to CrossTalk
□ read-events are sent via HTTP-Requests through a VBA-Block
□ variables or entity attributes may be appended to the query
◊ RFID-example: entity has attribute “epc”
□ easy integration of read-events in an existing supply chain model
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Arena Model with Read-Event Blocks
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RFID Tag and Read Gates
■ RFID Tag Gate
□ EPC-Base: base value
□ Range: maximum of tags
■ RFID Read Gate
□ Needs an ID
□ URL with reader ID as parameter and “epc=“
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VBA-Source of RFID Read Gate
■ Uses Microsoft WinHttp Services
□ activate in VBA-Editor under Tools -> References
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Arena Model with Read-Event Blocks
■ Manufacturer
□ Creates Drug Entity
□ Tags Drug Entity
□ Reads Drug Entity (first call to EPCIS)
□ Tags Batch Entity
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Arena Model with Read-Event Blocks
■ Wholesaler
□ Reads Batch and Drugs
□ Stores them until needed and then sends them out
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Arena Model with Read-Event Blocks
■ Pharmacy
□ Simulation of Customers
□ Drug-Batch comes in, drugs entities are read
□ Final RFID read when sold
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Agenda
■ The Hasso Plattner Institute
■ Research Group of Prof. Hasso Plattner
■ Processing of Large-scale Data in the Pharmaceutical Supply Chain
■ The Need for real Data in Software Engineering
■ Arena in Teaching and Research at the Research Group
■ Next Steps
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Simulating the Pharmaceutical Supply Chain with Arena
■ Developing a more complex simulation of the supply chain with integrated RFID-Technology
■ Running the simulation model with Arena and storing the RFID read-events
■ Evaluating the generated data sets
□ quantified number of read-events
■ Creating a setup of a company’s RFID-Infrastructure
□ with own prototyped test software
□ with enterprise software in business environment
■ Testing this setup with realistic data from the simulation
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Continuing research with simulation technology
■ The supply chain simulation data might give further insights
□ Will the ePedigree-model work efficiently?
□ What is the best way to implement the Discovery Service?
□ Where is further room for improvement in the EPCglobal Architecture?
■ Further questions concerning RFID-related software processes
□ Availability, Reliability, Stability
□ Confidentiality, Privacy, Access Control, Customizability
■ Enforcing research of enterprise RFID-software based on simulation data □ Testing the integration of SAP AII into an existing supply chain
with Arena?
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Literature and web references
■ „Follow The Pill: Understanding the U.S. Commercial Pharmaceutical Supply Chain“ by Dan Mendelson and The Health Strategies Consultancy, 2005
■ „Modeling supply chain network traffic“ by John R. Williams et al., 2008
■ EPCglobal: http://www.epcglobalinc.org/
■ Research database about RFID: http://autoidlabs.org/
■ CrossTalk: http://www.nofilis.de/
■ SAP AII: http://www.sap.com/platform/netweaver/autoidinfrastructure.epx
■ Chair of Prof. Plattner: http://epic.hpi.uni-potsdam.de
■ Slides available at http://stefanwehrmeyer.com/files/
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Thank you very much for your attention!
Questions please!
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