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Extension on CUHK RFID Middleware
ERG4920B FYP Presentation, 2008 - 2009Supervisor: Professor K.L.
Wu
Associate Examiner: Professor Y.T. ZhangSpecial Support: Andy
Mak
Chen ChensongThe Department of Electronic Engineering
The Chinese University of Hong Kong
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Agenda
1. Introduction
1. Introduction
2. Problems
2. Problems
3. Solutions
3. Solutions
4. Demo
4. Demo
5. Suggestions on Future Research
5. Suggestions on Future Research
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Introduction
An RFID system usually consists of RFID tags, RFID
readers,middleware and applications software.
The middleware is a critical component of a classic RFID system.
Itcoordinates RFID readers and processes the vast amount of
captureddata before delivering them to the application
software.
CUHK RFID Middleware 1.0 is an Open-Sourced Project andEPCGlobal
Standard Compatible Middleware, a product from Mobitec
ofInformation Engineering Department in The Chinese University of
HongKong.
This FYP aims at improving the data transferring efficiency
ofCUHK RFID Middleware 1.0 by extending the functionality of
readeradaptor and filtering out redundant raw tag data at the early
stage of
the RFID system.
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Introduction
Overview of RFID system
Major Components:1.RFID tags: attached to products
2.RFID readers: read tags and pass tag data to the
middleware3.Middleware: filter / process data and pass to
application software4.Application software: high-level process
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Introduction
ALE Enginez Application Level Eventz Most basic component of
RFID middlewarez EPCglobal standardz Defines the application
programming interfaces (APIs) forhigher level user applications
Overview of CUHK RFID Middleware 1.0
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Introduction
Overview of CUHK RFID Middleware 1.0
Reader Emulatorz Bundled utility of CUHK RFID Middleware 1.0z
Emulate RFID readersz Send random tag ids to the middleware
Tag Viewerz Bundled utility of CUHK RFID Middleware 1.0z Emulate
application softwarez Received tag data from the middleware
Management Consolez
Web-based graphical interfacez Configure RFID readers and user
applicationsz Monitor the network status
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Problems
CUHK RFID Middleware 1.0
Raw dataRaw dataProcessed data Filtering
Small amount of dataafter filtering
Huge amount of raw datawithout filtering !!!
Major weakness of current RFID system: the amount of tag data
transmitted from RFID readers toreader adaptor is very large, thus,
it consumes a lot of bandwidth and lowers the communication
efficiency.
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Solutions
Proposed solution: Do a low-level filtering of redundant tag
data inside RFID readers. Therefore, it reducesthe amount of raw
tag data at the first stage. Therefore, it improves the data
transferring efficiency.
Step 1: Low level filtering on RFID Reader( A program written in
eVC++ to fitler out redundant tag IDs and do encryption inside RFID
readers )
Step 2: Reader Adaptor( A Java program to retrieve filtered tag
data through FTP, decrypt tag data, submit the data to the
middleware)
Step 3: Web Console( A web interface written in JSP emulating an
inventory list of a PC store to demonstrate the advantages )
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Solutions
Internal Structure of CUHK Middleware
1. eVC++: low level data filtering & encryption
eVC++
2. Reader adaptor: FTP, decryption, submit
FTP
Decryption
Submit
3. Web Console: displayWeb Console
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Demo
Tag IDs without filtering Tag IDs with low-level filtering
Remark: Most of Tag IDs are repetitive and redundant. Remark:
Only distinct tags are recorded and ready to be transmitted.
eVC++ program run inside RFID reader
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Demo
Reader Adaptor
Functions:1.Connect to the RFID reader through FTP2.Retrieve Tag
IDs info3.Decrypt the Tag IDs
4.Convert the Tag IDs to EPCGlobal format5.Submit the Tag IDs to
the middleware
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Demo
Web Console
Functions:1.Configure RFID readers and user
applications2.Receive tag data info from the middleware3.Emulate an
inventory list of a PC store4.Display the inventory list when any
change occurs
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Demo
Web Console
Remark: Display the current inventory list Remark: Display the
product status when anychange occurs and update the inventory
list.
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Suggestions on Future Research
Multiple antennas algorithm on the RFID reader
Compression of data when transmitting
Encryption and decryption algorithm
Move decryption inside middleware
More robust web interface
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The End
