RFID Lab @ CASIA 中中中中中中中中中中中 RFID 中中中中 2008.3.1
RFID Lab @ CASIA
中国科学院自动化研究所RFID 研究中心
2008.3.1
Brief of CASIA
• CASIA: Institute of Automation, Chinese Academy of Sciences (CAS)
• Founded in 1956, focusing on Automatic Control and Information Processing
• Key member institute of CAS “Knowledge Innovation Program ”
• RFID Research Center of CASIA, established in July 2004, leadership of the first two RFID projects funded by National “863” Hi-Tech Program
• RFID Test Center – leading position in China
RFID Test and Its Extend Phases
测量Measure
模拟Emulating
建模Modeling
对象 Object实际系统 Re
al system测试数据 Data 数学模型 Model
时间 Time不确定 Not sur
e较短 Short 较长 Long
工具 Tools仪器设备 Instru
ment计算机语言
Computer Language
数学工具Math tool
准确度 Accuracy 较高 High 一般 Average 低 Low
理论性 Theorization
低 Low 一般 Average 高 High
开销 Cost 大 High 中 Average 小 Low
市场价值 Value 高 High 中 Average 高 High
SMEs are worried about…
• Whether or not RFID hardware performance (effective radiated power, frequency etc.) meets the local regulations
• How to select RFID devices that can fit the specific application requirements
• How to deploy RFID hardware in real environment to achieve maximum efficiency
How to deploy a RFID system becomes increasingly important due to the variety of RFID technology and complexity of its application environment
Challenges in RFID deployment
• Frequency is different in different countries, and RFID hardware performance is changed with different central frequency
• Environment influences RFID hardware performance – tag attaching material: paper, wood, plastic, metal, liquid– antenna installation: orientation, distance, height– tag placement, number of tags, tag moving speed– uncertain factors in real environment
• Difficulties in on-site deployment– tag-antenna matching: labor and time consuming, lack of
experiences– reader (antenna) number: cost a lot, difficult to deploy all for
testing• Furthermore, what is “good” solution is application-
specific—ROI analysis needed
Challenges in RFID deployment
To build a knowledge base for robust RFID solution models with common sense that can be leveraged upon across industries and different deployments, thus shortening the learning cycle, deployment time and reducing cost. It is an important reference for SMEs to learn RFID and to deploy RFID.
Real SystemReal System SimulatorSimulator
modeling simulation
Structure for modeling devices and events claimed to represent real system
Software forexecuting model
Model
test data acquisition
Experimental frame specifies conditions under which the system is experimented with and observed
Simulated/on-site Test
Motivation
depl
oym
ent
Two tasks
• RFID benchmarking test– oriented to various products, various
environment, various applications, in order to collect valuable raw data.
• RFID deployment simulator– in order to utilize the test results, it analyzes test
data using data mining and machine learning technologies, in order that customers could know the application effect in a visual way, and provides ROI report to remove the customers worries before they deploy RFID.
RFID Benchmarking Test
RFID Test Methodology
Standard Input
标准输入
DUT
待测试对象Signal Output
输出信号
Measure and Capture采集
Analyzing
分析Report
结论
测试原理 Principle 测试方法 Methodology
数据处理 Process
测试系统 System
RFID Performance Test
天线读写器计算机
1m
实时频谱分析仪
标签
RFID Conformance Test
Trs
Preamble
7* Trlb
0.0000 0.2000 0.4000 0.6000 0.8000 1.0000 1.2000 1.4000 1.6000 1.8000
Reader4
Reader3
Reader2
Reader1
tag attaching material tag moving
speed
antenna height
temperature, humidity, vibration
…
reader emission power
antenna orientation
antenna distance
RFID deployment
reader frequency
tag packaging
electromagnetic interference
Factors in RFID Deployment
cargoplacement
A demo RFID deployment
PLC
Info flowCargo flow
Antenna DB
Production line
Entry control
Robot arm
Conveyor belt
In
Out
Pallet
Warehouse
The Architecture
Real time Data Acquisition
Real Environment
Test Data DB
Configuration Profile
Repository
Visual User Interface
Interactive user-directed deployment
Modeling(tag, reader, antenna, environment factors)
Evaluation and Optimization
Simulation and Deployment
(to generate solution)
Optimal schemes of deployment
Deployment SchemeScheme: add reader3 for reader1; add reader4 for reader2.
Event = ( READ(reader1, reader3)>=1 ) AND ( READ(reader2, reader4)>=1 )
Result: event success rate = 98%
event success rate can be improved by a better deployment scheme.
Progressive Test-based Deployment
Model world Real world
Final system measurement & evaluation
update model
update model
Models(software simulation)
Models andreal systems
(test-in-the-loop simulation)
Real systems(field test)
replace model with real system
replace model with real system
The Global RF Lab Alliance - GRFLA
A network of excellence among international RF Lab (The Global RF Lab Alliance, GRFLA ).
• Parma University, Italy• University of Bremen• University of Arkansas• HKUST (Hong Kong University of Science
and Technology)• CASIA• …
Cooperative suggestions
• RFID Benchmarking Consortium joint testing
• Test data and experiences sharing
• Test data analyzing, modeling, data mining, machine learning the robust knowledge database
• RFID deployment support software for solution generating
谢谢!www.RFIDinfo.com.cn
www.RFIDlab.cn
中科院自动化所 RFID 研究中心2008.3.1