1、BSI Standards PublicationBS ISO 11451-2:2015Road vehicles Vehicletest methods for electricaldisturbances from narrowbandradiated electromagneticenergyPart 2: Off-vehicle radiation sourcesBS ISO 11451-2:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 11451-
2、2:2015.The UK participation in its preparation was entrusted to TechnicalCommittee AUE/16, Data Communication (Road Vehicles).A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a
3、 contract. Users are responsible for its correctapplication. The British Standards Institution 2015. Published by BSI StandardsLimited 2015ISBN 978 0 580 78595 5ICS 33.100.20; 43.040.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published
4、 under the authority of theStandards Policy and Strategy Committee on 30 June 2015.Amendments issued since publicationDate Text affectedBS ISO 11451-2:2015 ISO 2015Road vehicles Vehicle test methods for electrical disturbances from narrowband radiated electromagnetic energy Part 2: Off-vehicle radia
5、tion sourcesVhicules routiers Mthodes dessai dun vhicule soumis des perturbations lectriques par rayonnement dnergie lectromagntique en bande troite Partie 2: Sources de rayonnement hors du vhiculeINTERNATIONAL STANDARDISO11451-2Fourth edition2015-06-01Reference numberISO 11451-2:2015(E)BS ISO 11451
6、-2:2015ISO 11451-2:2015(E)ii ISO 2015 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2015, Published in SwitzerlandAll rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, includin
7、g photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41
8、 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgBS ISO 11451-2:2015ISO 11451-2:2015(E)Foreword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Test conditions . 15 Test location 26 Test instrumentation . 46.1 Field generating device 46.2 Field probes . 56.3 Stimulation
9、and monitoring of the device under test (DUT) 57 Test set-up . 57.1 Vehicle placement . 67.2 Field generating device location (relative to vehicle and shielded enclosure) . 67.2.1 Antenna constraints 67.2.2 TLS constraints 67.3 Vehicle test configurations 67.3.1 Vehicle not connected to the power gr
10、id 67.3.2 Vehicle in charging mode connected to the power grid . 77.3.3 Vehicle in charging mode through wireless power transmission (WPT) 158 Test procedure .178.1 Test plan . 188.2 Test method 188.2.1 Field calibration .188.3 Test report 24Annex A (informative) Function performance status classifi
11、cation .25 ISO 2015 All rights reserved iiiContents PageBS ISO 11451-2:2015ISO 11451-2:2015(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried
12、 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 part in the work. ISO
13、 collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different a
14、pproval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). Attention is drawn to the possibility that some of the elements of this document may be t
15、he subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents). A
16、ny trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in
17、the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 22, Road vehicles, Subcommittee SC 32, Electrical and electronic components and general system aspects.Annex A of this part of ISO 11451 is for infor
18、mation only.This fourth edition cancels and replaces the third edition (ISO 11451-2:2005) which has been technically revised.ISO 11451 consists of the following parts, under the general title Road vehicles Vehicle test methods for electrical disturbances from narrowband radiated electromagnetic ener
19、gy: Part 1: General principles and terminology Part 2: Off-vehicle radiation sources Part 3: On-board transmitter simulation Part 4: Bulk current injection (BCI)iv ISO 2015 All rights reservedBS ISO 11451-2:2015Road vehicles Vehicle test methods for electrical disturbances from narrowband radiated e
20、lectromagnetic energy Part 2: Off-vehicle radiation sources1 ScopeThis part of ISO 11451 specifies a method for testing the immunity of passenger cars and commercial vehicles to electrical disturbances from off-vehicle radiation sources, regardless of the vehicle propulsion system (e.g. spark igniti
21、on engine, diesel engine, electric motor).The electromagnetic disturbances considered are limited to narrowband electromagnetic fields.While this standard refers specifically to passenger cars and commercial vehicles, generalized as “vehicle(s)”, it can readily be applied to other types of vehicles.
22、ISO 11451-1 specifies general test conditions, definitions, practical use, and basic principles of the test procedure.Function performance status classification guidelines for immunity to electromagnetic radiation from an off-vehicle radiation source are given in Annex A.2 Normative referencesThe fo
23、llowing documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 11451-1, R
24、oad vehicles Vehicle test methods for electrical disturbances from narrowband radiated electromagnetic energy Part 1: General principles and terminology3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 11451-1 apply.4 Test conditionsThe applicable frequ
25、ency range of this test method is 0,01 MHz to 18 000 MHz. Testing over the full frequency range could require different field-generating devices, but this does not imply that testing of overlapping frequency ranges is required.The user shall specify the test severity level or levels over the frequen
26、cy range. Suggested test severity levels are given in Annex A of this International Standard.Standard test conditions are given in ISO 11451-1 for the following: test temperature; supply voltage;INTERNATIONAL STANDARD ISO 11451-2:2015(E) ISO 2015 All rights reserved 1BS ISO 11451-2:2015ISO 11451-2:2
27、015(E) modulation; dwell time; frequency step sizes; definition of test severity levels; test signal quality.5 Test locationThe test should be performed in an absorber-lined shielded enclosure.The aim of using an absorber-lined shielded enclosure is to create an indoor electromagnetic compatibility
28、testing facility that simulates open field testing.The size, shape, and construction of the enclosure can vary considerably. Typically, the floor is not covered with absorbing material, but such covering is allowed. Measurements in enclosures with or without floor absorbers can lead to different res
29、ults. The minimum size of the shielded enclosure is determined by the size of the test region needed, the size of the field generation device or devices, the needed clearances between these and the largest vehicle to be tested, and the characteristics of the absorbing material. To create the test re
30、gion, the absorber, field generation system and enclosure shape are selected such that the amount of extraneous energy in the test region is reduced to below a minimum value that will give the desired measurement accuracy. The design objective is to reduce the reflected energy in the test region to
31、10 dB or less over the test frequency range (not applicable to transmission line system (TLS) field generation systems). An example of a rectangular shielded enclosure is shown in Figure 1.The test may alternatively be performed at an outdoor test site. The test facility shall comply with (national)
32、 legal requirements regarding the emission of electromagnetic fields.2 ISO 2015 All rights reservedBS ISO 11451-2:2015ISO 11451-2:2015(E)a) Side view (vertical polarization)b) Top view (horizontal polarization)Key1 absorber-lined shielded enclosure 4 antenna2 RF absorber material 5 amplifier room3 v
33、ehicle dynamometer on turntablea6 control roomaTurntable shown rotatable through 180 with two pairs of variable wheelbase rollers to accommodate all vehicle sizes and functions.Figure 1 Example of absorber-lined shielded enclosure ISO 2015 All rights reserved 3BS ISO 11451-2:2015ISO 11451-2:2015(E)6
34、 Test instrumentationTesting consists of generating radiated electromagnetic fields using antenna sets with radio frequency (RF) sources capable of producing the desired field strength over the range of test frequencies.The following test instrumentation is used: Field generating device(s): e.g. ant
35、enna(s); Field probe(s); RF signal generator with internal or external modulation capability; High power amplifier(s); Powermeter (or equivalent measuring instrument) to measure forward power and reflected power.6.1 Field generating deviceThe field generating device can be an antenna or a TLS.The co
36、nstruction and orientation of any field generating device shall be such that the generated field can be polarized in the mode specified in the test plan (see 8.1). An example of a parallel-plate TLS is shown in Figure 2. Multiple antennas, amplifiers and directional couplers could be necessary to co
37、ver the complete frequency range.a) Side view4 ISO 2015 All rights reservedBS ISO 11451-2:2015ISO 11451-2:2015(E)b) Top viewKey1 shielded enclosure (absorbers permitted) 6 coaxial cable2 conductive plate or set of wires 7 load3 non-metallic supports 8 conductive wires4 shielded enclosure floor 9 sig
38、nal source feed connection5 signal source feed line (coaxial cable) 10 turntable (not required for this test)Figure 2 Example of parallel-plate TLS6.2 Field probesField probes shall be electrically small in relation to the wavelength and isotropic. The communication lines from the probes shall be fi
39、bre optic links.6.3 Stimulation and monitoring of the device under test (DUT)The vehicle shall be operated as required in the test plan by using actuators which have a minimum effect on the electromagnetic characteristics, e.g. plastic blocks on the push-buttons, pneumatic actuators with plastic tub
40、es.Connections to equipment monitoring electromagnetic interference reactions of the vehicle may be accomplished by using fibre-optics, or high resistance leads. Other type of leads can be used but require extreme care to minimize interactions. The orientation, length, and location of such leads sha
41、ll be carefully documented to ensure repeatability of test results.Any electrical connection of monitoring equipment to the vehicle can cause malfunctions of the vehicle. Extreme care shall be taken to avoid such an effect.7 Test set-upThree test setups are described: one for all types of vehicles w
42、hen they are not connected to the power mains; ISO 2015 All rights reserved 5BS ISO 11451-2:2015ISO 11451-2:2015(E) one for vehicles in charging mode connected to the power grid (with or without communication); one for vehicles in charging mode through wireless power transmission (WPT).7.1 Vehicle p
43、lacementThe vehicle shall be placed in the test region. The test region can contain a vehicle dynamometer or turntable or both (see Figure 1).7.2 Field generating device location (relative to vehicle and shielded enclosure)The position or positions of the vehicle relative to the antenna or TLS shall
44、 be specified in the test plan (see 8.1).The radiating elements of the field-generating device shall be no closer than 0,5 m to any absorbing material and no closer than 1,5 m to the wall of the shielded enclosure.7.2.1 Antenna constraintsNo part of the radiating antenna shall be closer than 0,5 m t
45、o the outer body surface of the vehicle.The phase centre of the antenna shall be separated by at least 2 m horizontally from the reference point.No part of an antennas radiating elements shall be closer than 0,25 m to the floor.There shall be no absorber material in the direct path between the trans
46、mitting antenna and the DUT.7.2.2 TLS constraintsNo part of a TLS, with the exception of the ground plane, shall be closer than 0,5 m to any part of the vehicle. The TLS radiating element or elements shall be separated by at least 1 m vertically from the reference point (see 8.2.1.1).The TLS shall e
47、xtend centrally over at least 75 % of the length of the vehicle.Particular care needs to be taken when testing heavy vehicles such as buses and large trucks. Under certain conditions related to dimensions and frequency, it is possible that close to 100 % of the applied power can be coupled to the ve
48、hicle by a directional coupler mechanism. Room resonances can also have a significant effect on the field uniformity, amplitude and direction under the TLS.7.3 Vehicle test configurationsThe configuration of 7.3.1 is applicable to whatever the vehicle type (combustion engine, electric, or hybrid pro
49、pulsion).The configuration of 7.3.2 is applicable only to the electric or hybrid/plugin propelled vehicles when they are in charging mode and connected to the power grid.The configuration of 7.3.3 is applicable only to the electric propelled vehicles when they are in charging mode through wireless power transmission (WPT).7.3.1 Vehicle not connected to the power gridAn example of a test set-up is shown in Figure 3.6 ISO 2015 All rights reservedBS ISO 11451-2:2015ISO 11451-2:2015(E)Dimensions in me
