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RFID
課程主題三
EPC/RFID系統架構與案例分析
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課程內容
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EPC/RFID
系統架構建置 網路元素的運作原理 指標性案例分享 2
EPC Technologies
• Electronic product code (EPC): an unique code for each object • RFID Tag • RFID reader • Object Name Service( ONS) : each number corresponds with an address in database • Product Markup Language(PML): In PML server, PML is used to describe and store information about the item.
• Savant: can work as a router, it get EPC information from the RFID reader, send the information to ONS Server and combine with application program for management of the item.
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EPC
網路架構
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EPC
網路架構
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EPC
網路架構
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EPC
網路架構
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EPC
網路架構
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EPC C1G2
• • • • 全名
EPC Class 1 Generation 2 Four “sessions”, each of which have their own Access and Kill passwords Four memory “banks”
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Defined Gen 2 Requirements
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Dozens of the world’s leading retail supply chain organizations defined Gen 2 user requirements
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Four sessions
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“Inventoried” flag “Select” (SL) flag Only one “inventory” (identify) operation at a time
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Access and Kill passwords
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Used to restrict reading and writing EPC code is returned during inventory Kill operation is permanent
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Four memory banks
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Reserved (Bank 0) EPC (Bank 1) TID (Tag ID) (Bank 2) User (Bank 3)
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Memory Bank 0 (Reserved)
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Reserved memory (bank 0) contains the kill and access passwords The kill password occupies bytes 0-1 (MSB first) The access password occupies bytes 2-3 (MSB first) If a tag does not implement the kill and/or access passwords, it acts as though it had zero-valued passwords that are permanently read/write locked
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Detailed Content of Bank 1 (EPC)
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Contains CRC-16, Protocol Control (PC), and EPC code PC bits specify EPC length in 16-bit words EPC code begins at byte 3 (EPC header) Caution: EPC C1 G2 uses 16-bit data words on even boundaries, so you must format and write a proper PC word to write the EPC!
CRC-16 PC EPC less header 64- or 96-bit EPC code 15
Detailed Content of Bank 1 (EPC)
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Length is expressed in units of words, so 6 is the length of EPC-96 RFU is always zero EPCISO bit is zero for EPC NSI (Number System ID) is used only if EPCISO bit is 1 To avoid all this, use “WRITE EPCID=Hxxx…xxx” with BRI
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Detailed Content of Bank 1 (EPC)
CRC (Bytes 0-1)
CRC-16
PC (Bytes 2-3) NSI EPCISO Bit
Length 1 byte EPC Header
1 byte Bytes 4-n 64- or 96-Bit EPC
Zero Fill
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Memory Bank 2 (Tag ID)
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Contains an 8-bit ISO/IEC 15963 allocation class identifier (0xE2 for EPCglobal) in byte 0 The next 12 bits are a mask-designer identifier (manufacturer ID) (obtained from EPCglobal) The 12 bits after the manufacturer is a 12-bit tag model.
The manufacturer ID and tag model must provide sufficient information for a reader to uniquely identify the custom commands and/or optional features that a tag supports Bytes 4 and up may contain Tag- and vendor specific data such as a tag serial number
8 bits 12 bits 12 bits Vendor-specific IEC 15963 ID (0xE2) Manufacturer ID Tag Model 18 Tag Serial Number
Memory Bank 3 (User)
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Organization and use is user-defined Memory capacity determined by chip manufacturer
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案例分享
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Auto Receiving /Shipping Fork Lift Application Drug Counterfeit & ePedigree Wal*Mart
廢棄物處理
RFID
應用 20
Auto Receiving /Shipping
Real Cases • • •
Wal-Mart Mandate Metro Mandate Target Mandate
Benefits • • • • 減少清點每箱貨物的 時間 與
ASN
比較用以減少 補貨時間及成本 減少尋找貨物時間 增加客戶滿意度 21
Gate reader
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Fork Lift Application Dock Door 1 Dock Door 20
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貨架天線擺設 24
Benefits • • • • 減少盤點時間 減少建置閘門式
Reader
之固定成本 減少尋找貨物時間 增加客戶滿意度
Forklift Related Application 1 2 3 4 C B A
Pick Go to S3 Return to Receiving • Real Cases
Worley 3PL
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S1 S2 S3
Drug Counterfeit & ePedigree
100,000 Tags used 1 st counterfeit Project in Asia Purdue Pharma & H.D. Smith Pilot 26
Wal*Mart
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RFID 讀取模組 廢棄物 With RFIDLabel 廢棄物處理
RFID
應用
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收料 BT(10 m) iPAQ PDA BT(10 m) GPRS(3-5 km) WLAN(100 m) 電子數位輸出磅秤
廢棄物處理
RFID
應用
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焚化爐管理 Data Server RFID 天線 x4 廢棄物 With RFID Label & External Barcode Label WLAN(100m) RFID 外接天線模組 29 電腦控制模組 AP