1、Determining the peak spatial-average specific absorption rate (SAR) in the human body from wireless communications devices, 30 MHz to 6 GHzPart 2: Specific requirements for finite difference time domain (FDTD) modelling of exposure from vehicle mounted antennasBS IEC/IEEE 627042:2017BSI Standards Pu
2、blicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06IEC/IEEE 62704-2Edition 1.0 2017-06INTERNATIONALSTANDARDNORMEINTERNATIONALEDetermining the peak spatial-average specific absorption rate (SAR) in thehuman body from wireless communications devices, 30 MHz to 6 GHz Part 2: Specific requ
3、irements for finite difference time domain (FDTD) modelling of exposure from vehicle mounted antennasDtermination du dbit dabsorption spcifique (DAS) maximal moyenn dans le corps humain, produit par les dispositifs de communications sans fil, 30 MHz 6 GHz Partie 2: Exigences spcifiques relatives la
4、modlisation de lexposition des antennes sur vhicule, laide de la mthode des diffrences finies dans le domaine temporel (FDTD)INTERNATIONALELECTROTECHNICALCOMMISSIONCOMMISSIONELECTROTECHNIQUEINTERNATIONALEICS 17.220.20 ISBN 978-2-8322-4259-9Warning! Make sure that you obtained this publication from a
5、n authorized distributor.Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. Registered trademark of the International Electrotechnical CommissionMarque dpose de la Commission Electrotechnique InternationalecolourinsideNational forewordThis British Standa
6、rd is the UK implementation of IEC/IEEE 627042:2017.The UK participation in its preparation was entrusted to Technical Committee GEL/106, Human exposure to low frequency and high frequency electromagnetic radiation.A list of organizations represented on this committee can be obtained on request to i
7、ts secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017 Published by BSI Standards Limited 2017ISBN 978 0 580 81613 0ICS 17.220.20; 33.070.01Compliance with a Briti
8、sh Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 October 2017.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS IEC/IEEE 627042:2017IEC/IEEE 62704-2
9、Edition 1.0 2017-06 INTERNATIONAL STANDARD NORME INTERNATIONALE Determining the peak spatial-average specific absorption rate (SAR) in the human body from wireless communications devices, 30 MHz to 6 GHz Part 2: Specific requirements for finite difference time domain (FDTD) modelling of exposure fro
10、m vehicle mounted antennas Dtermination du dbit dabsorption spcifique (DAS) maximal moyenn dans le corps humain, produit par les dispositifs de communications sans fil, 30 MHz 6 GHz Partie 2: Exigences spcifiques relatives la modlisation de lexposition des antennes sur vhicule, laide de la mthode de
11、s diffrences finies dans le domaine temporel (FDTD) INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE ICS 17.220.20 ISBN 978-2-8322-4259-9 Warning! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vou
12、s avez obtenu cette publication via un distributeur agr. Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale colourinsideBS IEC/IEEE 627042:2017 2 IEC/IEEE 62704-2:2017 IEC/IEEE 2017 CONTENTS FOREWORD . 5 INTRODUCTION .
13、7 1 Scope 8 2 Normative references 8 3 Terms and definitions 8 4 Abbreviated terms . 9 5 Exposure configuration modelling 10 5.1 General considerations . 10 5.2 Vehicle modelling 10 5.3 Communications device modelling 11 5.4 Exposed subject modelling 14 5.5 Exposure conditions 15 5.6 Accounting for
14、variations in population relative to the standard human body model 18 5.6.1 Whole-body average SAR adjustment factors 18 5.6.2 Peak spatial-average SAR adjustment factors . 20 6 Validation of the numerical models 22 6.1 Validation of antenna model 22 6.1.1 General . 22 6.1.2 Experimental antenna mod
15、el validation 22 6.1.3 Numerical antenna model validation 23 6.2 Validation of the human body model . 24 6.3 Validation of the vehicle numerical model . 26 6.3.1 General . 26 6.3.2 Vehicle model validation for bystander exposure simulations . 27 6.3.3 Vehicle model validation for passenger exposure
16、simulations 28 7 Computational uncertainty . 30 7.1 General considerations . 30 7.2 Contributors to overall numerical uncertainty in standard test configurations . 31 7.2.1 General . 31 7.2.2 Uncertainty of the numerical algorithm . 31 7.2.3 Uncertainty of the numerical representation of the vehicle
17、 and pavement. 31 7.2.4 Uncertainty of the antenna model 32 7.2.5 Uncertainty of SAR evaluation in the standard bystander and passenger models. 33 7.3 Uncertainty budget 33 8 Benchmark simulation models . 34 8.1 General . 34 8.2 Benchmark for bystander exposure simulations 35 8.3 Benchmark for passe
18、nger exposure simulations 36 9 Documenting SAR simulation results . 38 9.1 General . 38 9.2 Test device . 38 9.3 Simulated configurations . 38 9.4 Software and standard model validation 38 BS IEC/IEEE 627042:2017 2 IEC/IEEE 62704-2:2017 IEC/IEEE 2017 CONTENTS FOREWORD . 5 INTRODUCTION . 7 1 Scope 8
19、2 Normative references 8 3 Terms and definitions 8 4 Abbreviated terms . 9 5 Exposure configuration modelling 10 5.1 General considerations . 10 5.2 Vehicle modelling 10 5.3 Communications device modelling 11 5.4 Exposed subject modelling 14 5.5 Exposure conditions 15 5.6 Accounting for variations i
20、n population relative to the standard human body model 18 5.6.1 Whole-body average SAR adjustment factors 18 5.6.2 Peak spatial-average SAR adjustment factors . 20 6 Validation of the numerical models 22 6.1 Validation of antenna model 22 6.1.1 General . 22 6.1.2 Experimental antenna model validatio
21、n 22 6.1.3 Numerical antenna model validation 23 6.2 Validation of the human body model . 24 6.3 Validation of the vehicle numerical model . 26 6.3.1 General . 26 6.3.2 Vehicle model validation for bystander exposure simulations . 27 6.3.3 Vehicle model validation for passenger exposure simulations
22、28 7 Computational uncertainty . 30 7.1 General considerations . 30 7.2 Contributors to overall numerical uncertainty in standard test configurations . 31 7.2.1 General . 31 7.2.2 Uncertainty of the numerical algorithm . 31 7.2.3 Uncertainty of the numerical representation of the vehicle and pavemen
23、t. 31 7.2.4 Uncertainty of the antenna model 32 7.2.5 Uncertainty of SAR evaluation in the standard bystander and passenger models. 33 7.3 Uncertainty budget 33 8 Benchmark simulation models . 34 8.1 General . 34 8.2 Benchmark for bystander exposure simulations 35 8.3 Benchmark for passenger exposur
24、e simulations 36 9 Documenting SAR simulation results . 38 9.1 General . 38 9.2 Test device . 38 9.3 Simulated configurations . 38 9.4 Software and standard model validation 38 IEC/IEEE 62704-2:2017 3 IEC/IEEE 2017 9.5 Antenna numerical model validation 38 9.6 Results of the benchmark simulation mod
25、els . 38 9.7 Simulation uncertainty . 39 9.8 SAR results . 39 Annex A (normative) File format and description of the standard human body models . 40 A.1 File format 40 A.2 Tissue parameters 42 Annex B (informative) Population coverage 47 Annex C (informative) Peak spatial-average SAR locations for t
26、he validation and the benchmark simulation models . 51 Bibliography 52 Figure 1 Antenna feed model . 12 Figure 2 Voltage and current at the matched antenna feed-point 13 Figure 3 Bystander model (left) and passenger/driver model (right) for the SAR simulations . 15 Figure 4 Passenger and driver posi
27、tions in the vehicle for the SAR simulations . 17 Figure 5 Bystander positions relative to the vehicle for the SAR simulations 17 Figure 6 Experimental setup for antenna model validation . 23 Figure 7 Benchmark configuration for bystander model exposed to a front or back plane wave . 25 Figure 8 Ben
28、chmark configuration for passenger model exposed to a front or back plane wave . 26 Figure 9 Configuration for vehicle numerical model validation 27 Figure 10 Side view (top) and rear view (bottom) benchmark validation configuration for bystander and trunk mount antenna . 35 Figure 11 Benchmark vali
29、dation configuration for passenger and trunk mount antenna 37 Table 1 Pavement model parameters . 14 Table 2 Whole-body average SAR adjustment factors for the bystander and trunk mount antennas 19 Table 3 Whole-body average SAR adjustment factors for the bystander and roof mount antennas 19 Table 4
30、Whole-body average SAR adjustment factors for the passenger and trunk mount antennas 19 Table 5 Whole-body average SAR adjustment factors for the passenger and roof mount antennas 20 Table 6 Peak spatial-average SAR adjustment factors for the bystander model and trunk mount antennas . 21 Table 7 Pea
31、k spatial-average SAR adjustment factors for the bystander model and roof mount antennas . 21 Table 8 Peak spatial-average SAR adjustment factors for the passenger model and trunk mount antennas . 21 Table 9 Peak spatial-average SAR adjustment factors for the passenger model and roof mount antennas
32、. 22 Table 10 Peak spatial-average SAR for 1 g and 10 g and whole-body average SAR for the front and back plane wave exposure of the 3-mm resolution bystander model 25 BS IEC/IEEE 627042:2017 4 IEC/IEEE 62704-2:2017 IEC/IEEE 2017 Table 11 Peak spatial-average SAR for 1 g and 10 g and whole-body aver
33、age SAR for the front and back plane wave exposure of the 3-mm resolution passenger model . 26 Table 12 Antenna length for the vehicle model validation configurations 27 Table 13 The reference electric field (top) and magnetic field (bottom) values for the numerical validation of the vehicle model f
34、or bystander exposure . 28 Table 14 Coordinates of the test points for the standard vehicle validation simulations for the passenger . 29 Table 15 The reference electric field (top) and magnetic field (bottom) values for the numerical validation of the vehicle model for passenger exposure 30 Table 1
35、6 Numerical uncertainty budget for exposure simulations with vehicle mounted antennas and bystander and/or passenger models . 34 Table 17 Reference SAR values for the bystander benchmark validation model . 36 Table 18 Reference SAR values for the passenger benchmark validation model 37 Table A.1 Vox
36、el counts in each data file 41 Table A.2 Tissues and the associated RGB colours in the binary data file 41 Table A.3 ColeCole parameters and density for the standard human body model tissues 43 Table A.4 Relative dielectric constant and conductivity for the standard human body model at selected refe
37、rence frequencies . 45 Table B.1 Whole-body average SAR adjustment factors for the bystander model and trunk mount antenna . 47 Table B.2 Whole-body average SAR adjustment factors for the bystander model and roof mount antenna . 48 Table B.3 Whole-body average SAR adjustment factors for the passenge
38、r model and trunk mount antenna 48 Table B.4 Whole-body average SAR adjustment factors for the passenger model and roof mount antenna . 48 Table B.5 Peak spatial-average SAR adjustment factors for the bystander model and trunk mount antenna . 49 Table B.6 Peak spatial-average SAR adjustment factors
39、for the bystander model and roof mount antenna . 49 Table B.7 Peak spatial-average SAR adjustment factors for the passenger model and trunk mount antenna . 49 Table B.8 Peak spatial-average SAR adjustment factors for the passenger model and roof mount antenna 50 Table C.1 Location of the peak spatia
40、l-average SAR for the front and back plane wave exposure of the standard human body models . 51 Table C.2 Location of the peak spatial-average SAR for the vehicle mounted antenna benchmark simulation models . 51 BS IEC/IEEE 627042:2017 4 IEC/IEEE 62704-2:2017 IEC/IEEE 2017 Table 11 Peak spatial-aver
41、age SAR for 1 g and 10 g and whole-body average SAR for the front and back plane wave exposure of the 3-mm resolution passenger model . 26 Table 12 Antenna length for the vehicle model validation configurations 27 Table 13 The reference electric field (top) and magnetic field (bottom) values for the
42、 numerical validation of the vehicle model for bystander exposure . 28 Table 14 Coordinates of the test points for the standard vehicle validation simulations for the passenger . 29 Table 15 The reference electric field (top) and magnetic field (bottom) values for the numerical validation of the veh
43、icle model for passenger exposure 30 Table 16 Numerical uncertainty budget for exposure simulations with vehicle mounted antennas and bystander and/or passenger models . 34 Table 17 Reference SAR values for the bystander benchmark validation model . 36 Table 18 Reference SAR values for the passenger
44、 benchmark validation model 37 Table A.1 Voxel counts in each data file 41 Table A.2 Tissues and the associated RGB colours in the binary data file 41 Table A.3 ColeCole parameters and density for the standard human body model tissues 43 Table A.4 Relative dielectric constant and conductivity for th
45、e standard human body model at selected reference frequencies . 45 Table B.1 Whole-body average SAR adjustment factors for the bystander model and trunk mount antenna . 47 Table B.2 Whole-body average SAR adjustment factors for the bystander model and roof mount antenna . 48 Table B.3 Whole-body ave
46、rage SAR adjustment factors for the passenger model and trunk mount antenna 48 Table B.4 Whole-body average SAR adjustment factors for the passenger model and roof mount antenna . 48 Table B.5 Peak spatial-average SAR adjustment factors for the bystander model and trunk mount antenna . 49 Table B.6
47、Peak spatial-average SAR adjustment factors for the bystander model and roof mount antenna . 49 Table B.7 Peak spatial-average SAR adjustment factors for the passenger model and trunk mount antenna . 49 Table B.8 Peak spatial-average SAR adjustment factors for the passenger model and roof mount ante
48、nna 50 Table C.1 Location of the peak spatial-average SAR for the front and back plane wave exposure of the standard human body models . 51 Table C.2 Location of the peak spatial-average SAR for the vehicle mounted antenna benchmark simulation models . 51 IEC/IEEE 62704-2:2017 5 IEC/IEEE 2017 DETERM
49、INING THE PEAK SPATIAL-AVERAGE SPECIFIC ABSORPTION RATE (SAR) IN THE HUMAN BODY FROM WIRELESS COMMUNICATIONS DEVICES, 30 MHz TO 6 GHz Part 2: Specific requirements for finite difference time domain (FDTD) modelling of exposure from vehicle mounted antennas FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization
