1、 Reference number ISO/IEC/IEEE 21451-7:2011(E) ISO/IEC 2011 IEEE 2011INTERNATIONAL STANDARD ISO/IEC/ IEEE 21451-7 First edition 2011-12-15 Information technology Smart transducer interface for sensors and actuators Part 7: Transducer to radio frequency identification (RFID) systems communication pro
2、tocols and Transducer Electronic Data Sheet (TEDS) formats Technologies de linformation Interface de transducteurs intelligente pour capteurs et actuateurs Partie 7: Protocoles de communication entre capteurs et systmes didentification par radiofrquence (RFID) et feuilles de donnes lectroniques du t
3、ransducteur (TEDS) ISO/IEC/IEEE 21451-7:2011(E) COPYRIGHT PROTECTED DOCUMENT ISO/IEC 2011 IEEE 2011 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm,
4、without permission in writing from ISO, IEC or IEEE at the respective address below. ISO copyright office IEC Central Office Institute of Electrical and Electronics Engineers, Inc. Case postale 56 3, rue de Varemb 3 Park Avenue, New York CH-1211 Geneva 20 CH-1211 Geneva 20 NY 10016-5997, USA Tel. +
5、41 22 749 01 11 Switzerland E-mail stds.iprieee.org Fax + 41 22 749 09 47 E-mail inmailiec.ch Web www.ieee.org E-mail copyrightiso.org Web www.iec.ch Web www.iso.org Published by ISO in 2012 Published in Switzerland ii ISO/IEC 2011 All rights reserved IEEE 2011 All rights reservedISO/IEC/IEEE 21451-
6、7:2011(E) ISO/IEC 2011 All rights reserved IEEE 2011 All rights reserved iiiContents Page Foreword vi Introduction . vii 1 Scope 1 2 Conformance . 1 3 Normative references 1 4 Terms and definitions . 2 5 Abbreviated terms . 2 6 Transducer and RFID system interface specification . 3 7 Air interface a
7、pplicability (RFID and RTLS) 4 7.1 General . 4 7.2 Overview . 4 7.3 Sensor security system basic operations 5 7.3.1 Air interface security system support . 5 7.3.2 Direct sensor security support 5 7.4 Sensor identifier 7 7.5 Sensor characteristics TEDS (Type 1) 8 7.5.1 TEDS type . 10 7.5.2 Sensor ty
8、pe 10 7.5.3 Units extension 10 7.5.4 Sensor map of supported measurement codes . 10 7.5.5 Data resolution 11 7.5.6 Scale factors for transmitted data . 12 7.5.7 Data uncertainty 13 7.5.8 Sensor reconfiguration . 13 7.5.9 Memory rollover capability . 13 7.5.10 Air interface security capability . 17 7
9、.5.11 Sensor security capability 17 7.5.12 Sensor authentication encryption capability map . 17 7.5.13 Sensor data encryption capability map 18 7.5.14 Random number size 18 7.5.15 Continuing authentication capability field 18 7.5.16 Sensor authentication password/key size 19 7.5.17 Sensor data encry
10、ption key size 19 7.5.18 Data encryption capability field . 19 7.6 Sample and configuration record 20 7.6.1 UTC timestamp at configuration and beginning of mission . 20 7.6.2 Sample interval 21 7.6.3 Monitor delay . 21 7.6.4 Alarm values set 21 7.6.5 Memory rollover enabled 21 7.6.6 Air interface ta
11、g security status code . 22 7.6.7 Sensor command classes 22 7.6.8 Air interface security function code 23 7.6.9 Sensor security function code . 24 7.6.10 Sensor authentication encryption function code 25 7.6.11 Sensor data encryption function code 25 7.6.12 Security timer duration . 25 7.6.13 Secure
12、 session timer 25 ISO/IEC/IEEE 21451-7:2011(E) iv ISO/IEC 2011 All rights reserved IEEE 2011 All rights reserved7.6.14 Upper alarm threshold value 26 7.6.15 Lower alarm threshold value 26 7.7 Event administration record .26 7.7.1 Code 10 sample capacity (C10SC) .27 7.7.2 Code 11 sample capacity (C11
13、SC) .27 7.7.3 Code 12 sample capacity (C12SC) .28 7.7.4 Code 13 sample capacity (C13SC) .28 7.7.5 Sample count .28 7.7.6 Alarms triggered 28 7.7.7 Sample count at a predetermined time .28 7.7.8 Sample count and data following alarm event .29 7.7.9 Sample count of events outside either threshold 29 7
14、.7.10 Sample count at the first threshold event .29 7.7.11 Mission in progress .29 7.8 Event records .29 7.8.1 Single event record .30 7.8.2 Single event with timestamp 30 7.8.3 Event counts 30 7.8.4 Data log of all sampled events .30 7.8.5 Data log plus time tick .31 7.8.6 Data log of all observati
15、ons after initial alarm 31 8 Command overview .31 8.1 General 31 8.2 Read sensor identifier .34 8.3 Read primary characteristics TEDS .35 8.4 Write sample and configuration .36 8.5 Read sample and configuration .39 8.6 Read alarm status 41 8.7 Read single memory record .43 8.8 Read event administrat
16、ion record 45 8.9 Read event record segments 47 8.10 Read partial event record segment 50 8.11 Write event administration field 7 51 8.12 Read any field .53 8.13 Erase event administration record.54 8.14 Erase event records 55 8.15 Erase sample and configuration record 56 8.16 Begin end mission .57
17、8.17 Challenge 60 8.18 Reader authenticate 63 8.19 ReadWriteLock keys 65 8.20 Request RN .67 8.21 Encryption on/off .69 8.22 Close secure session 70 9 RFID communications .71 9.1 Support for commands .71 9.2 Addressing and sub-addressing of sensors 71 Annex A (normative) Sensor types .73 Annex B (no
18、rmative) Extension codes .74 Annex C (informative) Physical interfaces .75 C.1 Interface - Serial Bus .75 C.2 1-Wire 75 C.3 SPI (Serial Peripheral Interface) .75 C.4 I 2 C (I Squared C) .76 Annex D (informative) Integration of ISO/IEC/IEEE 21451-7 transducers with other ISO/IEC/IEEE 21451 devices .7
19、7 ISO/IEC/IEEE 21451-7:2011(E) ISO/IEC 2011 All rights reserved IEEE 2011 All rights reserved vAnnex E (informative) Sensor authentication and encryption . 79 E.1 Need for authentication and encryption . 79 E.2 Use of a stream cipher for encryption . 79 E.3 Authentication using a stream cipher . 80
20、E.4 Recommendations 81 Bibliography 82 ISO/IEC/IEEE 21451-7:2011(E) vi ISO/IEC 2011 All rights reserved IEEE 2011 All rights reservedForeword ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide sta
21、ndardization. National bodies that are members of ISO or IEC participate in the development of International Standards through technical committees established by the respective organization to deal with particular fields of technical activity. ISO and IEC technical committees collaborate in fields
22、of mutual interest. Other international organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the work. In the field of information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1. IEEE Standards documents are developed w
23、ithin the IEEE Societies and the Standards Coordinating Committees of the IEEE Standards Association (IEEE-SA) Standards Board. The IEEE develops its standards through a consensus development process, approved by the American National Standards Institute, which brings together volunteers representin
24、g varied viewpoints and interests to achieve the final product. Volunteers are not necessarily members of the Institute and serve without compensation. While the IEEE administers the process and establishes rules to promote fairness in the consensus development process, the IEEE does not independent
25、ly evaluate, test, or verify the accuracy of any of the information contained in its standards. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of ISO/IEC JTC 1 is to prepare International Standards. Draft International Standard
26、s adopted by the joint technical committee are circulated to national bodies for voting. Publication as an International Standard requires approval by at least 75 % of the national bodies casting a vote. Attention is called to the possibility that implementation of this standard may require the use
27、of subject matter covered by patent rights. By publication of this standard, no position is taken with respect to the existence or validity of any patent rights in connection therewith. ISO/IEEE is not responsible for identifying essential patents or patent claims for which a license may be required
28、, for conducting inquiries into the legal validity or scope of patents or patent claims or determining whether any licensing terms or conditions provided in connection with submission of a Letter of Assurance or a Patent Statement and Licensing Declaration Form, if any, or in any licensing agreement
29、s are reasonable or non-discriminatory. Users of this standard are expressly advised that determination of the validity of any patent rights, and the risk of infringement of such rights, is entirely their own responsibility. Further information may be obtained from ISO or the IEEE Standards Associat
30、ion. ISO/IEC/IEEE 21451-7 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 31, Automatic identification and data capture techniques, in cooperation with the Technical Committee on Sensor Technology (TC9) of the IEEE Instrumentation and Measurement Soci
31、ety, under the Partner Standards Development Organization cooperation agreement between ISO and IEEE. ISO/IEC/IEEE 21451 consists of the following parts, under the general title Information technology Smart transducer interface for sensors and actuators: Part 1: Network Capable Application Processor
32、 (NCAP) information model Part 2: Transducer to microprocessor communication protocols and Transducer Electronic Data Sheet (TEDS) formats Part 4: Mixed-mode communication protocols and Transducer Electronic Data Sheet (TEDS) formats Part 7: Transducer to radio frequency identification (RFID) system
33、s communication protocols and Transducer Electronic Data Sheet (TEDS) formats ISO/IEC/IEEE 21451-7:2011(E) ISO/IEC 2011 All rights reserved IEEE 2011 All rights reserved viiIntroduction This part of ISO/IEC/IEEE 21451 describes communication methods, data formats and provides a Transducer Electronic
34、 Data Sheet (TEDS) for sensors working in cooperation with radio frequency identification (RFID) systems. This part of ISO/IEC/IEEE 21451 does not outline, recommend, or prescribe any specific air- interface protocol. This part of ISO/IEC/IEEE 21451 is intended to be air-interface agnostic. In the I
35、SO/IEC/IEEE 21451 series of standards, transducers (sensors or actuators) are connected to a transducer interface module (TIM), which is connected to a network capable application processor (NCAP) to allow network access of transducer data. ISO/IEC/IEEE 21450 defines a set of common functionality, c
36、ommands, and TEDS for the ISO/IEC/IEEE 21451 series of smart transducer standards. ISO/IEC/IEEE 21450 provides a common basis for members of the ISO/IEC/IEEE 21451 series of standards to be interoperable. It defines the functions that are to be performed by a TIM and the common characteristics for a
37、ll devices that implement the TIM. It specifies the formats for TEDS. It defines a set of commands to facilitate the setup and control of the TIM as well as reading and writing the data used by the system. Application programming interfaces (APIs) are defined to facilitate communications with the TI
38、M and with applications. ISO/IEC/IEEE 21451-1 defines a smart transducer object model and communication methods to facilitate the access of smart transducers in a network. ISO/IEC/IEEE 21451-2 defines serial interfaces for connecting transducer modules to a network processor. ISO/IEC/IEEE 21451-4 de
39、fines a mixed-mode transducer interface that allows the transfer of digital transducer electronic data sheet and analogue sensor signals on the same wires. INTERNATIONAL STANDARD ISO/IEC/IEEE 21451-7:2011(E) ISO/IEC 2011 All rights reserved IEEE 2011 All rights reserved 1Information technology Smart
40、 transducer interface for sensors and actuators Part 7: Transducer to radio frequency identification (RFID) systems communication protocols and Transducer Electronic Data Sheet (TEDS) formats 1 Scope This part of ISO/IEC/IEEE 21451 defines communication methods and data formats for transducers (sens
41、ors and actuators) communicating with RFID tags. This part of ISO/IEC/IEEE 21451 also defines Transducer Electronic Data Sheet (TEDS) formats based on the ISO/IEC/IEEE 21451 series of standards and protocols for accessing TEDS and transducer data. It adopts necessary interfaces and protocols to faci
42、litate the use of technically differentiated, existing technology solutions. It does not specify transducer design or signal conditioning. There is currently no openly defined independent interface standard between transducers and RFID tags. Each vendor builds its own interface. Without such a stand
43、ard, transducer interfacing and integration to RFID tags and systems are time-consuming and all vendors duplicated efforts are economically unproductive. The purpose of this part of ISO/IEC/IEEE 21451 is to provide interfaces and methods for interfacing transducers to RFID tags and reporting transdu
44、cer data within the RFID infrastructure. It also provides the means for device and equipment interoperability. 2 Conformance Conformance to this part of ISO/IEC/IEEE 21451 requires that all non-optional sections be implemented in the vendor device. 3 Normative references The following referenced doc
45、uments are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO/IEC 19762 (all parts), Information technology Automatic identification an
46、d data capture (AIDC) techniques Harmonized vocabulary IEEE Std 100-2000, The Authoritative Dictionary of IEEE Standards Terms, Seventh Edition ISO/IEC/IEEE 21451-7:2011(E) 2 ISO/IEC 2011 All rights reserved IEEE 2011 All rights reserved4 Terms and definitions For the purposes of this document, the
47、terms and definitions given in ISO/IEC 19762 (all parts), IEEE Std 100 and the following apply. 4.1 transducer electronic data sheet data sheet stored in some form of electrically readable memory, which describes a Transducer Channel 4.2 event sensor sensor that detects a change of state in the phys
48、ical world NOTE The fact that a change of state has occurred and/or instant in time of the change of state, and not the state value, is the “measurement”. 4.3 message information that is to be passed between devices as a single logical entity NOTE A message may occupy one or more packets. 4.4 sensor
49、 device that responds to biological, chemical, or physical stimuli (such as heat, light, sound, pressure, magnetism, motion, and gas detection) and transmits the resulting signal or data for providing a measurement, operating a control, or both 4.5 1451.7 sensor device that responds to biological, chemical, or physical stimulus (such as heat, light, sound, pressure, magnetism, motion, and gas detection) and provides a measured response of the observed stimulus 4.6 smart transducer transduc
