1、BRITISH STANDARD BS ISO 11785:1996 Implementation of ISO 11785:1996 Radio-frequency identification of animals Technical concept ICS 33.060.01; 65.040.99BSISO11785:1996 This British Standard, having been prepared under the direction of the Engineering Sector Board, was published under the authority o
2、f the Standards Board and comes intoeffect on 15March1997 BSI 11-1998 The following BSI references relate to the work on this standard: Committee reference AGE/31 Draft for comment 94/709370 DC ISBN 0 580 26636 2 Committees responsible for this British Standard The preparation of this British Standa
3、rd was entrusted to Technical Committee AGE/31, Agricultural electronic equipment, upon which the following bodies were represented: Agricultural Engineers Association Forestry Commission Health and Safety Executive Milk Marketing Board National Farmers Union Silsoe Research Institute Coopted member
4、s The following bodies were also represented in the drafting of the standard through panel AGE/31/-/1: AIM (UK) British Small Animal Veterinary Association Meat and Livestock Commission Pet Advisory Committee Royal Society for the Prevention of Cruelty to Animals Amendments issued since publication
5、Amd. No. Date CommentsBSISO11785:1996 BSI 11-1998 i Contents Page Committees responsible Inside front cover National foreword ii Foreword iii Text of ISO 11785 1BSISO11785:1996 ii BSI 11-1998 National foreword This British Standard reproduces verbatim ISO11785:1996 and implements it as the UK nation
6、al standard. This British Standard is published under the direction of the Engineering Sector Board whose Technical Committee AGE/31 has the responsibility to: aid enquirers to understand the text; present to the responsible international committee any enquiries on interpretation, or proposals for c
7、hange, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK. NOTEInternational and European Standards, as well as overseas standards, are available from Customer Services, BSI, 389 Chiswick High Road, London W44AL. A British Standard d
8、oes not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an in
9、side front cover, pages i and ii, theISO title page, pages ii to iv, pages 1 to 13 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on theinside front cover.BSISO 11785:1996 ii BSI 11-1998 Co
10、ntents Page Foreword iii Introduction 1 1 Scope 1 2 Conformance 1 3 Normative references 1 4 Definitions 2 5 Abbreviations 3 6 Requirements 3 Figure 1 Signal structures of the FDX identification telegram 4 Figure 2 Structure of the FDX identification telegram 4 Figure 3 Timing of the decay of the ac
11、tivation field 5 Figure 4 Signal structures of the HDX identification telegram 5 Figure 5 Structure of the HDX identification telegram 6 Figure A.1 Signal structures of binary 0 of Destron (FECAVA version) 7 Figure A.2 Structure of the Destron (FECAVA version) identification telegram 8 Figure A.3 Th
12、e structure of the Datamars identification telegram 8 Figure A.4 The structure of the Trovan identification telegram 9 Figure A.5 Schematic diagram of a transceiver combined with a moduletoreadone of the technologies described in this annex 9 Figure B.1 Schematic diagram of the CRC check 11 Figure C
13、.1 Interrogation protocol patterns 13 Table 1 Summary of the FDX and HDX systems 6BSISO 11785:1996 BSI 11-1998 iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISOmemberbodies). The work of preparing International Standards
14、 is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take p
15、art in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Sta
16、ndard requires approval by at least 75% of the member bodies casting a vote. International Standard ISO11785 was prepared by Technical Committee ISO/TC23, Tractors and machinery for agriculture and forestry, Subcommittee SC19, Agricultural electronics. Annexes A and B form an integral part of this I
17、nternational Standard. Annex C is for information only.iv blankBS ISO11785:1996 BSI 11-1998 1 Introduction The technical concept of animal identification described is based upon the principle of radio-frequency identification (RFID). ISO11785 is applicable in connection with ISO11784 which describes
18、 the structure and the information content of the codes stored in the transponder. The International Organization for Standardization (ISO) draws attention to the fact that compliance with clause 6 and annex A of this International Standard may involve the use of patents concerning methods of transm
19、ission. ISO takes no position concerning the evidence, validity and scope of these patent rights. The following patent holder has assured ISO that he will not exert its patent rights concerning FDX B technology: NEDAP Agri BV Postbus 9 NL-7255 ZG Hengelo Tel. + 31 575 46 38 00 Fax + 31 575 46 37 25
20、The following patent holders have assured ISO that they are willing to negotiate licences under reasonable and non-discriminatory terms and conditions with applicants throughout the world. In this respect, the statement of the holders of these patents rights are registered with ISO: Destron Fearing
21、Corporation 490 Villaume Avenue USA-South St. Paul, MN 55075-2445 Tel. + 1 612 455 1263 Fax + 1 612 455 0413 Datamars SA Via Ponteggia CH-6814 Cadempino-Lugano Tel. + 41 91 58 27 01 Fax + 41 91 58 27 41 Texas Instruments Limited 800 Pavilion Drive Northampton Business Park GB-Northampton NN4 7YL Tel
22、. + 44 1604 663 000 Fax + 44 1604 663 001 TROVAN Limited c/o Gruenguertelstr. 12 D-50996 Cologne Tel. + 49 221 391 431 Fax + 49 221 395 893 Attention is moreover drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights other than those ide
23、ntified above. ISO shall not be held responsible for identifying any or all such patent rights. In that connection, additional correspondences were received from two other companies (AVID and EID) not willing to forward pertinent declaration in accordance with the current ISO Directives. Copies of d
24、eclarations and statements received from all the above mentioned companies are available upon request to the ISO Central Secretariat. 1 Scope This International Standard specifies how a transponder is activated and how the stored information is transferred to a transceiver. 2 Conformance Transponder
25、s are in conformance with this International Standard provided they meet the requirements given in clause 6 of this International Standard. Transceivers are in conformance with this International Standard provided they meet the requirements given in clause 6 and annex A, if the latter is applicable.
26、 In order to allow a smooth transition from the different transponders presently in use to those complying with this International Standard, transponders meeting the requirements of annex A may be applied for a transition period of two years from the date of the first edition of this International S
27、tandard. 3 Normative references The following standard contains provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the edition indicated was valid. All standards are subject to revision, and parties to agreements based
28、on this International Standard are encouraged to investigate the possibility of applying the most recent edition of the standard indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 11784:1996, Radio-frequency identification of animals Code struc
29、ture.BSISO11785:1996 2 BSI 11-1998 4 Definitions For the purposes of this International Standard, the following definitions apply. 4.1 activation field electromagnetic field transmitted by a transceiver to energize and/or activate a transponder 4.2 activation frequency frequency of the activation fi
30、eld 4.3 activation period time duration of the activation signal 4.4 bit rate number of bits transmitted per second 4.5 differential bi-phase encoding method of encoding in which data bit 0 is represented by a mid-bit transition; data bit 1 is represented by no transition; and there is always a tran
31、sition in between two bits 4.6 encoding one to one relationship between basic information elements and modulation patterns 4.7 error detection code bits that contain information which can be used to detect errors 4.8 frequency shift keying binary information is superimposed onto a carrier electromag
32、netic field by shifting between discrete frequencies of the field 4.9 full duplex method of information exchange in which the information is communicated while the transceiver transmits the activation field 4.10 half duplex method of information exchange in which the information is communicated afte
33、r the transceiver has stopped transmitting the activation field 4.11 header bits transmitted before the useful information, uniquely identifying the start of a page, which may also be used for synchronization of the transponder and the transceiver 4.12 identification code 64 bits of the identificati
34、on telegram which are specified in ISO11784 4.13 identification telegram the total identification message (header, identification code, error detection code and trailer), possibly repeatedly transmitted by the transponder upon activation 4.14 mobile transceiver transceiver that is not connected to o
35、ther transceivers when these are in its vicinity to synchronize activation periods and pauses 4.15 modulation method of superimposing information onto an electromagnetic field by means of varying a specific parameter of the field 4.16 non-return to zero encoding method of encoding in which data bit
36、1 is a high signal and data bit 0 is a low signal 4.17 page a coherent part of the communicated information 4.18 phase shift keying binary information is superimposed onto a carrier electromagnetic field by introducing discrete phase shifts of the field 4.19 stationary transceiver transceiver that i
37、s connected to other transceivers when these are in its vicinity to synchronize activation periods and pauses 4.20 trailer bits transmitted after the error detection code; the content of which is dependent upon the value of the flag for an additional data block which is specified in ISO 11784BS ISO1
38、1785:1996 BSI 11-1998 3 4.21 transceiver device used to communicate with a transponder 4.22 transponder device which transmits its stored information when activated by a transceiver and may be able to store new information 5 Abbreviations 6 Requirements The system shall be defined in such a way that
39、 the FDX and HDX transponders can be read by one transceiver. Annex A describes the method that can be used to enhance the functionality of this transceiver to read certain installed base transponders which are not compatible with the FDX and HDX transponders described in this clause. A stationary t
40、ransceiver shall activate transponders using an activation field with an activation frequency of (134,2 13,42 10 3 ) kHz. The activation period shall be 50ms. If an FDX signal is received during activation but is not validated, the activation period shall be extended until be identification telegram
41、 is validated, but not longer than 100ms. Consecutively, there shall be a pause in the activation signal. If an HDX signal is received the pause shall last for 20ms. If no HDX signal is detected within 3ms after a 3dB decay of the activation field, activation shall be resumed. For synchronization re
42、asons, each tenth activation cycle shall have a fixed pattern of 50ms activation and20ms pause (seeannex C). A mobile transceiver shall be able to detect the presence of additional active transceivers through the reception of activation signals. If no activation signal is detected within 30ms, the m
43、obile transceiver is out of reach of other active transceivers and shall use the activation protocol defined above for a stationary transceiver. If the mobile transceiver does detect an activation signal it shall wait for the rising edge of the next activation signal and shall activate during a fixe
44、d period of50ms. The identification code shall be in accordance with ISO11784. The identification code, the CRC error detection bits (seeannex B) and the trailer shall be transmitted starting with the LSB and ending with the MSB. In view of future enhancements, for example multi-page transponders in
45、corporating sensors and/or writable memory, the identification telegram shall terminate in 24 trailer bits in which, for instance, information from sensors or the contents of trailing pages may be stored. If the flag for additional data blocks, which is specified in ISO11784, is binary 0 the value o
46、f most of the trailer bits is unspecified. The value of the trailer bits for additional data blocks which have a flag equal to binary 1 will be defined by a future International Standard. NOTE 1Since errors in the trailer will not be detected by the error detection protocol of the identification tel
47、egram, it is not necessary to read these bits in order to correctly detect the identification code. NOTE 2In most countries the use of transceivers as described in this International Standard is subject to regulations. Type approval from the national regulatory agencies may be required before they c
48、an be operated or traded in these countries. 6.1 Full duplex system An FDX transponder receiving the activation field shall transmit its code during the activation period. The FDX transponder uses a modified DBP encoded sub-carrier which is amplitude modulated upon the radio frequency carrier. Becau
49、se the slope of a low-high transition is not infinitely steep, every low-high transition is advanced in time to a maximum of eight cycles to obtain optimal performance (seeFigure 1). The transponder shall send its message back using the frequency bands129,0kHz to 133,2kHz and 135,2kHz to139,4kHz. The duration of one bit is 32 activation field cycles. This corresponds to a bit rate of4194bit/s. NOTEThe basic frequency of the sub-carrier, containing the phase encoded data signal, is not influenced by the advancement in time of the low-high
