1、 jiu jiang university中英文文獻翻譯題 目 rfid射頻識別技術(shù)概述 院 系 信息科學與技術(shù)學院 專 業(yè) 計算機科學與技術(shù) 姓 名 武曉杰 班級學號 a121238 二一五年十二月rfid basic principlewhat is the rfid?rfid is the abbreviation for radio frequency identification, called electronics label .what is the rfid technology?rfid recognition is a non-contact automatic iden

2、tification technology, rf signal through its automatic target recognition and access to relevant data, identify work without manual intervention, it can work in various environments. rfid technology can identify high-speed moving objects and can identify multiple tags, the operation is fast and conv

3、enient.accenture laboratorys chief scientist sir alex ferguson feels rfid is a breakthrough technology: first, can identify a very specific objects, rather like the code that can identify class objects; second, the use of rf, can read data through external materials, and bar code must rely on laser

4、to read information; third, can also read on to multiple objects, and bar code can only read one by one. in addition, store of information is also very big.what is the basic component of rfid?the most basic rfid system consists of three parts:tag:tag consists of components and chips, each tag has on

5、ly electronic coding, adhere to the object for identifiering target;reader:read (sometimes also can write) label information equipment,it can be designed for portable or fixed;antenna: transmit radio frequency signals between in the label and reader.the basic principle of rfid technology is what?the

6、 basic principle of rfid technology is not complex: label into the field, receive radio frequency signals from reader collision, with all the energy stored in a chip of the product information （ passive tag, there is no source label or labels ）, or actively to send a frequency signals（ active tag an

7、d to label or labels ） ； to read information and understanding of the decoder after the central information systems to carry out the relevant data processing.what makes retailers so highly rfid?sanford bernstein cristiano, according to analysts estimate the retailing company, by adopting the rfid, w

8、al-mart can save $8.35 billion each year, mostly because of the purchase of artificial view does not need to save the cost of labor code. although some analysts think $8 billion in the digital too optimistic, but undoubtedly, rfid help solve the problem: the two biggest retail commodities and loss (

9、broken by theft and supply chain was unsettled and loss of products),now a wal-mart, stealing a loss is almost 20 billion dollars, if a legitimate business turnover can achieve this number, can in american 1,000 enterprises list of top first 694. research organizations estimate, this rfid technology

10、 can help to reduce the level of 25% reduction and stock.the typical application of rfid technology is what?logistics and supply managementmanufacturing and assemblyairline baggage handlingmail/express parcela document tracking/library managementanimal identity tagsmovementaccess control/electronic

11、ticketsautomatic charge. roadrfid automatic recognition term explanation micro wave: wavelength of 0.1-100 centimeters or frequency in 1-100ghz electromagnetic wave.radiation frequency: usually microwave.electronic tags: stored data object code identification tag, also called rf cards.passive tags:

12、without power and internal by receiving microwave energy work.active tags: by internal batteries work labels.microwave antenna: used for launching and receive a signal.read device: used to read the labels in electronic gramming device: for electronic data written to the label or labels for t

13、he stored data.beam bracketing: refers to the antenna beam range of microwave irradiation range launch power.tag capacity: the label of programming can be written in the number of digits or logical.a - biz -utomatic identification technology application case frameasn - senior freight noticebis - com

14、mercial information systemda - shipment notificationean -european articles coding epctm - electronic productsons - objects name resolution servicespml - entity markup languageucc - unity coding committeeuml - unified modeling languagesystem composition and working principlethe most basic rfid system

15、 consists of three parts:tag:tag consists of components and chips, each tag has only electronic coding, adhere to the object for identifiering target;reader:read (sometimes also can write) label information equipment,it can be designed for portable or fixed;antenna: transmit radio frequency signals

16、between in the label and reader.some systems have readers rs232 or rs485 interface with external computer (upper computer system) connection, and exchange data.the system of basic workflow is: reader through the antenna send certain frequencies of rf signals, when the rf card to enter the antenna wo

17、rking area induced current, rf cards gain energy to be activated, rf cards will own coding information through the card built-in transmitting antenna send out, system receiving aerial from rf card from the carrier signal, the antenna of a regulator to the reader, the reader to receive a signal and d

18、emodulates and decodes to the system to deal with the relevant ； the main system based on logic, determine the legality of smart cards, in different settings make the appropriate treatment and control signals control and direction of movement. in the coupling between inductors and electromagnetic wa

19、y (), communication process (fdx, hdx, seq)、from rf card to the reader of data transmission of the load method (modulation, reverse scattering, high time harmonics) and frequency, from the contact method transmission a fundamental difference, but all the reader in principle, and the decision of the

20、design structures are very similar. all the reader is a simple matter of high frequency and control unit two basic module. high frequency interface includes both transmitters and receivers, its functions include: to produce high-frequency transmit power to start and provide rf card energy. to launch

21、 signal used to send data to rf cards, receive and demodulation of high frequency signals from rf cards. different rfid system with some difference frequency interface design, the system frequency inductive coupling interface diagram shown.quartz oscillatormodulatoroutput stageamplifierantband passa

22、mplifieroutput stagetxdrxdreaders of the control unit features include: communicate with the application software, application software and to execute the order of radio frequencies ； control and communication from the principle of the lord - () ； signal of the decoding. to some specific systems are

23、 the collision, the algorithm to rf card reader, and to the transfer of data encryption and decryption, as well as on radio frequencies and the readers authentication for an additional function.the rfid system is a key and distance of the parameters. at present, the price of long-distance rfid syste

24、m is very expensive, thus to improve their reading for distance of the method is very important. influence factors of distance and rf card reader, including antenna working frequency of rf output power, readers reception sensitivity, rf card power, antenna and the resonant circuit q value, antenna,

25、rf card reader and the direction of the coupling, and rf card itself of energy and send information energy etc. most of the system of writing is read and write different, read the distance is about 40% to 80%.theory analysisrfid technology uses radio-frequency mode in the reader and rf card no conta

26、ct between the bidirectional data transmission, in order to achieve target recognition and data exchange. and the tradition of code, magnetic and ic card, compared with non-contact, rf card reading speed, wear, not by environmental impact, long life, easy to use and has the characteristics of anti-c

27、ollision function, can handle more cards. abroad, rfid technology has been widely used in industrial automation, commercial automation, transportation control, etc.rfid基本原理什么是rfid?rfid是radio frequency identification的縮寫，即射頻識別，俗稱電子標簽。什么是rfid技術(shù)？rfid射頻識別是一種非接觸式的自動識別技術(shù)，它通過射頻信號自動識別目標對象并獲取相關(guān)數(shù)據(jù)，識別工作無須人工干預(yù)，可

28、工作于各種惡劣環(huán)境。rfid技術(shù)可識別高速運動物體并可同時識別多個標簽， 操作快捷方便。 埃森哲實驗室首席科學家弗格森認為rfid是一種突破性的技術(shù)：第一，可以識別單個的非常具體的物體，而不是像條形碼那樣只能識別一類物體；第二，其采用無線電射頻，可以透過外部材料讀取數(shù)據(jù)，而條形碼必須靠激光來讀取信息；第三，可以同時對多個物體進行識讀，而條形碼只能一個一個地讀。此外，儲存的信息量也非常大。什么是rfid的基本組成部分？最基本的rfid系統(tǒng)由三部分組成：標簽：由耦合元件及芯片組成，每個標簽具有唯一的電子編碼，附著在物體上標識目標對象；閱讀器：讀取(有時還可以寫入)標簽信息的設(shè)備，可設(shè)計為手持式或固

29、定式；天線：在標簽和讀取器間傳遞射頻信號。rfid技術(shù)的基本工作原理是什么？rfid技術(shù)的基本工作原理并不復(fù)雜：標簽進入磁場后，接收解讀器發(fā)出的射頻信號，憑借感應(yīng)電流所獲得的能量發(fā)送出存儲在芯片中的產(chǎn)品信息（passive tag，無源標簽或被動標簽），或者主動發(fā)送某一頻率的信號（active tag，有源標簽或主動標簽）；解讀器讀取信息并解碼后，送至中央信息系統(tǒng)進行有關(guān)數(shù)據(jù)處理。是什么讓零售商如此推崇rfid？據(jù)sanford c. bernstein公司的零售業(yè)分析師估計，通過采用rfid，沃爾瑪每年可以節(jié)省83.5億美元，其中大部分是因為不需要人工查看進貨的條碼而節(jié)省的勞動力成本。盡管另

30、外一些分析師認為80億美元這個數(shù)字過于樂觀，但毫無疑問，rfid有助于解決零售業(yè)兩個最大的難題：商品斷貨和損耗（因盜竊和供應(yīng)鏈被攪亂而損失的產(chǎn)品），而現(xiàn)在單是盜竊一項，沃爾瑪一年的損失就差不多有20億美元，如果一家合法企業(yè)的營業(yè)額能達到這個數(shù)字，就可以在美國1000家最大企業(yè)的排行榜中名列第694位。研究機構(gòu)估計，這種rfid技術(shù)能夠幫助把失竊和存貨水平降低25%。rfid技術(shù)的典型應(yīng)用是什么？ 物流和供應(yīng)管理 生產(chǎn)制造和裝配 航空行李處理 郵件/快運包裹處理 文檔追蹤/圖書館管理 動物身份標識 運動計時 門禁控制/電子門票 道路自動收費rfid自動識別術(shù)語解釋 微 波 ： 波長為0.1100

31、厘米或頻率在1100ghz的電磁波。 射 頻 ： 一般指微波。 電子標簽 ： 以電子數(shù)據(jù)形式存儲標識物體代碼的標簽，也叫射頻卡。 被動式電子標簽： 內(nèi)部無電源、靠接收微波能量工作的電子標簽。 主動式電子標簽： 靠內(nèi)部電池供電工作的電子標簽。 微波天線 ： 用于發(fā)射和接受微波信號。 讀出裝置 ： 用于讀取電子標簽內(nèi)電子數(shù)據(jù)。 閱 讀 器 ： 用于讀取電子標簽內(nèi)電子數(shù)據(jù)。 編 程 器 ： 用于將電子數(shù)據(jù)寫入電子標簽或查閱電子標簽內(nèi)存儲數(shù)據(jù)。 波束范圍 ： 指天線發(fā)射微波的照射功率范圍。 標簽容量 ： 電子標簽編程時所能寫入的字節(jié)數(shù)或邏輯位數(shù)。 a-biz自動識別技術(shù)的應(yīng)用案例框架 asn高級貨運通知 bis商業(yè)信息系統(tǒng) da發(fā)貨通知 ean歐洲物品編碼組 epctm產(chǎn)品電子碼 ons對象名解析服務(wù) pml實體標記語言 ucc統(tǒng)一編碼委員會 uml統(tǒng)一建模語言 系統(tǒng)組成和工作原理 最基本的rfid系統(tǒng)由三部分組成： 1. 標簽(tag，即射頻卡)：由耦合元件及芯片組成，標簽含有內(nèi)置天線，用于和射頻天線間進行通信。 2. 閱讀器：讀取(在讀寫卡中還可以寫入)標簽信息的設(shè)備。 3. 天線：在標簽和讀取器間傳遞射頻信號。 有些系