IEC 62369-1-2008 Evaluation of human exposure to electromagnetic fields from short range devices (SRDs) in various applications over the frequency range 0 GHz to 300 GHz - Part 1 F.pdf

1、 IEC 62369-1 Edition 1.0 2008-08 INTERNATIONAL STANDARD NORME INTERNATIONALE Evaluation of human exposure to electromagnetic fields from short range devices (SRDs) in various applications over the frequency range 0 GHz to 300 GHz Part 1: Fields produced by devices used for electronic article surveil

2、lance, radio frequency identification and similar systems Evaluation de lexposition humaine aux champs lectromagntiques produits par les dispositifs radio courte porte dans la plage de frquence 0 GHz 300 GHz Partie 1: Champs produits par les dispositifs utiliss pour la surveillance lectronique des o

3、bjets, lidentification par radiofrquence et les systmes similaires IEC 62369-1:2008 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2008 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,

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17、 sur cette publication ou si vous avez des questions, visitez le FAQ du Service clients ou contactez-nous: Email: csciec.ch Tl.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC 62369-1 Edition 1.0 2008-08 INTERNATIONAL STANDARD NORME INTERNATIONALE Evaluation of human exposure to electromagnetic fields f

18、rom short range devices (SRDs) in various applications over the frequency range 0 GHz to 300 GHz Part 1: Fields produced by devices used for electronic article surveillance, radio frequency identification and similar systems Evaluation de lexposition humaine aux champs lectromagntiques produits par

19、les dispositifs radio courte porte dans la plage de frquence 0 GHz 300 GHz Partie 1: Champs produits par les dispositifs utiliss pour la surveillance lectronique des objets, lidentification par radiofrquence et les systmes similaires INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNI

20、QUE INTERNATIONALE XB ICS 33.050 PRICE CODE CODE PRIX ISBN 2-8318-9969-9 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale 2 62369-1 IEC:2008 CONTENTS FOREWORD.5 INTRODUCTION.7 1 Scope.8 2 Normative references .9 3 Ter

21、ms, definitions, and abbreviations .9 3.1 Quantities9 3.2 Constants9 3.3 Terms and definitions 10 4 Measurements and calculations for equipment evaluation 15 4.1 Introduction .15 4.2 Evaluation against reference values 16 4.2.1 General .16 4.2.2 Direct measurement for comparison against reference va

22、lues .16 4.2.3 Spatial measurements for comparison against reference values 17 4.2.4 Modelling and analysis including field non-uniformity.17 4.3 Specific absorption rate (SAR) measurements.24 4.3.1 General .24 4.3.2 Internal electric field strength measurements.24 4.3.3 Internal temperature measure

23、ments 25 4.3.4 Calorimetric measurements of heat transfer 26 4.3.5 Phantom models and fluid .26 4.4 Numerical evaluations for comparison against basic restrictions26 4.4.1 General .26 4.4.2 Evaluations using homogeneous models .26 4.4.3 Special case of inductive near-field exposure 100 kHz to 50 MHz

24、28 4.4.4 Frequencies 50 MHz.29 4.4.5 Localised SAR (100 kHz to 10 GHz) 29 4.5 Evaluations using non-homogeneous models for comparison against basic restrictions 30 4.5.1 General .30 4.5.2 Anatomical body models30 4.5.3 Calculation/modelling method31 4.5.4 Position of the body in relation to the unit

25、 under evaluation .31 4.6 Measurement of limb and touch currents .31 5 Measurements for field monitoring32 5.1 General .32 5.2 Field measurements 32 5.2.1 Measurement where persons spend significant periods of time32 5.2.2 Detailed measurements for non-transitory exposure 32 5.3 Additional evaluatio

26、n .32 6 Exposure from sources with multiple frequencies or complex waveforms33 7 Exposure from multiple sources33 8 Uncertainty.34 8.1 General .34 8.2 Evaluating uncertainties 34 8.2.1 Individual uncertainties3462369-1 IEC:2008 3 8.2.2 Combining uncertainties 35 8.3 Examples of typical uncertainty c

27、omponents .35 8.3.1 Measurement.35 8.3.2 Numerical calculation 35 8.4 Overall uncertainties .35 9 Evaluation report 35 Annex A (informative) Characteristics of equipment .37 Annex B (informative) Information for numerical modelling.47 Annex C (informative) A simplified method for summation of multip

28、le sources .67 Annex D (informative) Uncertainty .70 Bibliography71 Figure 1 General torso grid 19 Figure 2 General head grid 19 Figure 3 Single floor standing antenna.20 Figure 4 Dual floor standing antenna .20 Figure 5 Single floor antenna.21 Figure 6 Single ceiling antenna21 Figure 7 Combined flo

29、or and ceiling antennas22 Figure 8 “Walk-through” loop antenna22 Figure 9 Counter or desk mounted antenna .23 Figure 10 Vertical, wall or frame mounted antenna.23 Figure 11 Hand-held antenna.24 Figure 12 Disk model .28 Figure 13 Cubic model.28 Figure 14 Spheroid model28 Figure A.1 Example of exit mo

30、unted equipment showing detection range.40 Figure A.2 Example of aisle mounted equipment40 Figure A.3 Inductive coupling.42 Figure A.4 Electromagnetic coupling42 Figure A.5 Capacitive coupling.42 Figure A.6 Overview of an RFID system.44 Figure B.1 Current induced in a loop47 Figure B.2 Disk model51

31、Figure B.3 Disk model used for validations 51 Figure B.4 Cubic model52 Figure B.5 Cubic model example showing current induced in 3 dimensions.53 Figure B.6 Prolate spheroid .54 Figure B.7 Helmholtz coils and prolate spheroid.55 Figure B.8 60 cm by 30 cm prolate spheroid results (magnetic field)56 Fi

32、gure B.9 60 cm by 30 cm prolate spheroid results (induced current density) .56 Figure B.10 120 cm by 60 cm prolate spheroid results (magnetic field) 57 Figure B.11 120 cm by 60 cm prolate spheroid results (induced current density)57 Figure B.12 160 cm by 80 cm prolate spheroid results (magnetic fiel

33、d) 58 4 62369-1 IEC:2008 Figure B.13 160 cm by 80 cm prolate spheroid results (induced current density)58 Figure B.14 Homogeneous human shape body model60 Figure B.15 Homogeneous human shape (induced current) .60 Figure B.16 Homogeneous hand model61 Figure B.17 Approximate conductivities for LF homo

34、geneous body modelling .66 Table 1 Dimensions and distances for Figures 1 to 11 .18 Table 2 Dimensions and distances for simplified body shapes .27 Table 3 Maximum total evaluation uncertainties.35 Table A.1 Frequency ranges and typical system characteristics.43 Table A.2 Example frequency bands and

35、 their applications43 Table B.1 Disk model dimensions for Figure B.2 51 Table B.2 Cubic disk model dimensions for Figure B.4.52 Table B.3 Prolate spheroid dimensions for Figure B.654 Table B.4 Summary of results 59 Table B.5 Examples of anatomical models .62 Table B.6 Conductivity of tissue types64

36、Table B.7 Relative permittivity of tissue types 6562369-1 IEC:2008 5 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ EVALUATION OF HUMAN EXPOSURE TO ELECTROMAGNETIC FIELDS FROM SHORT RANGE DEVICES (SRDS) IN VARIOUS APPLICATIONS OVER THE FREQUENCY RANGE 0 GHz to 300 GHz Part 1: Fields produced by devices

37、 used for electronic article surveillance, radio frequency identification and similar systems FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of I

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46、 or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some

47、of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 62369-1 has been prepared by IEC technical committee 106: Methods for the assessment of electric, magnetic and elec

48、tromagnetic fields associated with human exposure. The text of this standard is based on the following documents: FDIS Report on voting 106/156/FDIS 106/159/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. 6 62369

49、-1 IEC:2008 This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. The list of all parts of IEC 62369 series, published under the title Evaluation of human exposure to electromagnetic fields from short range devices (SRDs) in various applications over the frequency range 0 GHz to 300 GHz, can be fou