Presentation by Junfang ZENG

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