1、_ SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising there
2、from, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions. Copyright 2013 SAE International All rights reserved. No part of this p
3、ublication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-497
4、0 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/J1812_201306 SURFACE VEHICLE STANDARD J1812 JUN2013 Issued 1988-10 Revised 2013-0
5、6 Superseding J1812 MAY2007 Function Performance Status Classification for EMC Immunity Testing RATIONALE The document is revised to demonstrate the concept with a “single class” functional status with application of multiple categories of functions. Changes were also made to the terminology and exa
6、mples to harmonize with the similar concept in SAE J1113-1, ISO 7637-1, ISO 11451-1, ISO 11452-1 and ISO 16750. Appendix B-2 was revised to align the severity levels with the latest version of the corresponding Parts of SAE J1113. TABLE OF CONTENTS 1. SCOPE 2 2. REFERENCES 2 2.1 Applicable Documents
7、 2 3. DEFINITIONS . 3 4. MEASUREMENT PHILOSOPHY 3 5. ESSENTIAL ELEMENTS OF FUNCTION PERFORMANCE STATUS CLASSIFICATION (FPSC) 4 5.1 Test Signal and Test Method 4 5.2 Function Performance Status 4 5.3 Test Signal Severity Level . 5 6. NOTES 5 6.1 Marginal Indicia . 5 APPENDIX A ILLUSTRATION OF FUNCTIO
8、N PERFORMANCE STATUS CLASSIFICATION 6 APPENDIX B APPLICATION OF FUNCTION PERFORMANCE STATUS CLASSIFICATION 7 FIGURE A1 ILLUSTRATION OF FUNCTION PERFORMANCE STATUS CLASSIFICATION 6 TABLE B1 ILLUSTRATION OF FSPC WITH 3 CATEGORY OF FUNCTIONS . 7 TABLE B2 EXAMPLE OF SEVERITY LEVELS - (IMMUNITY TO CONDUC
9、TED TRANSIENTS) 8 TABLE B3 EXAMPLE OF SEVERITY LEVELS IMMUNITY TO CONDUCTED TRANSIENTS PULSE 1 8 TABLE B4 EXAMPLE OF SEVERITY LEVELS - (RADIATED IMMUNITY TEST METHOD) 8 TABLE B5 EXAMPLE OF SEVERITY LEVELS FOR BULK CURRENT INJECTION TEST METHOD FOR 3 FREQUENCY BANDS 8 TABLE B6 EXAMPLE OF SEVERITY LEV
10、ELS - ESD - DIRECT CONTACT DISCHARGE 9 SAE J1812 Revised JUN2013 Page 2 of 9 1. SCOPE This SAE Standard provides a general method for defining the acceptable function performance status classification for the functions of automotive electronic devices upon application of the test conditions specifie
11、d as described in appropriate EMC immunity test standards (for example, SAE J1113 and SAE J551). Testing of devices could be performed either on or off vehicles. Appropriate test signal and methods, Function Performance status, and test signal severity level would have to be specified in the individ
12、ual cases. 2. REFERENCES 2.1 Applicable Documents The following publications form a part of this specification to the extent specified herein. Unless otherwise indicated, the latest issue of SAE publications shall apply. 2.1.1 SAE Publications Available from SAE International, 400 Commonwealth Drive
13、, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org. SAE J551-1 Performance Levels and Methods of Measurement of Electromagnetic Compatibility of Vehicles, Boats (up to 15 m), and Machines (16.6 Hz to 18 GHz) SAE J551-11 Vehicle Electroma
14、gnetic Immunity - Off-Vehicle Source SAE J551-12 Vehicle Electromagnetic Immunity - On-Board Transmitter Simulation SAE J551-13 Vehicle Electromagnetic Immunity - Bulk Current Injection SAE J551-15 Vehicle Electromagnetic Immunity - Electrostatic Discharge (ESD) SAE J551-17 Vehicle Electromagnetic I
15、mmunity - Power Line Magnetic Fields SAE J1113-1 Electromagnetic Compatibility Measurement Procedures and Limits for Components of Vehicles, Boats (up to 15 m), and Machines (Except Aircraft) (16.6 Hz to 18 GHz) SAE J1113-2 Electromagnetic Compatibility Measurement Procedures and Limits for Vehicle
16、Components (Except Aircraft) - Conducted Immunity, 15 Hz to 250 kHz - All Leads SAE J1113-3 Conducted Immunity, 250 kHz to 400 MHz, Direct Injection of Radio Frequency (RF) Power SAE J1113-4 Immunity to Radiated Electromagnetic Fields - Bulk Current Injection (BCI) Method SAE J1113-11 Immunity to Co
17、nducted Transients on Power Leads SAE J1113-12 Electrical Interference by Conduction and Coupling - Capacitive and Inductive Coupling via Lines Other than Supply Lines SAE J1113-13 Electromagnetic Compatibility Measurement Procedure for Vehicle Components - Part 13: Immunity to Electrostatic Dischar
18、ge SAE J1113-21 Electromagnetic Compatibility Measurement Procedure for Vehicle Components - Part 21: Immunity to Electromagnetic Fields, 30 MHz to 18 GHz, Absorber-Lined Chamber SAE J1812 Revised JUN2013 Page 3 of 9 SAE J1113-22 Electromagnetic Compatibility Measurement Procedure for Vehicle Compon
19、ents - Part 22 - Immunity to Radiated Magnetic Fields SAE J1113-24 Immunity to Radiated Electromagnetic Fields; 10 kHz to 200 MHz - Crawford TEM Cell and 10 kHz to 5 GHz - Wideband TEM Cell SAE J1113-26 Electromagnetic Compatibility Measurement Procedure for Vehicle Components - Immunity to AC Power
20、 Line Electric Fields SAE J1113-27 Electromagnetic Compatibility Measurements Procedure for Vehicle Components - Part 27 - Immunity to Radiated Electromagnetic Fields - Mode Stir Reverberation Method 3. DEFINITIONS See SAE J1113-1 or SAE J551-1. 4. MEASUREMENT PHILOSOPHY Electrical and radio frequen
21、cy interference occurs during the normal operation of many items of motor vehicle equipment and when the vehicle is subjected to electromagnetic noises from the outside environment. It is generated over a wide frequency range with various electrical characteristics and may be distributed to on-board
22、 electronic devices and systems by conduction and/or radiation. During recent years, an increasing number of electronic devices have been introduced into vehicle designs in order to perform, control, monitor and display various functions including the engine management system. It has been necessary
23、therefore, to consider the electrical and electromagnetic environment in which these devices are required to operate. Interference can be generated in the vehicle electrical system itself by the normal operation of various power devices such as power window, power lock, air conditioning, etc. This i
24、nterference can cause a temporary malfunction or even permanent damage to the electronic equipment. Significant numbers of performance deviations, resulting from this interference, have been reported. Narrow band and broad band signals generated from sources inside or outside the vehicle could also
25、be coupled into the electrical/electronic system, affecting the normal performance of electronic devices. These sources of electromagnetic disturbance are, for example, vehicles ignition system, mobile telephones, broadcast transmitters, etc. Protection from this potential interference has to be con
26、sidered in a total system validation. The FPSC approach is based on the following principles: 1. Functional performance status classification is applicable to each individual function. Hence, a vehicle will have many functions and a DUT will likely include several functions (e.g., an electronic unit
27、 can manage front wiping, courtesy lighting and low beam lighting) 2. A function can be a simple On-Off operation or be complex as data communication on a data bus. It has to be emphasized that components or systems shall only be tested under the conditions, as described in SAE EMC test standards th
28、at represent the simulated automotive electromagnetic environments to which the devices would actually be subjected. This will help to ensure a technically and economically optimized design for potentially susceptible components and systems. It should also be noted that this document is not intended
29、 to be a product specification and cannot function as one. It should be used in conjunction with a specific test procedure in applicable EMC immunity testing standards such as SAE J1113 and SAE J551 series of documents. Therefore, no specific values for the test signal severity level are included in
30、 this document since they should be determined by the vehicle manufacturers and component suppliers. Nevertheless, using the concepts described in this document and by careful application and agreement between manufacturer and supplier, this document can be used to describe the functional status req
31、uirements for a specific device. This can then, in fact, be a statement of how a particular device can be expected to perform under the influence of the specified test signals. SAE J1812 Revised JUN2013 Page 4 of 9 This method is based on the following considerations: 1. A DUT/vehicle can include on
32、e or several functions (e.g., an electronic unit can manage front wiping, courtesy lighting and low beam lighting) 2. A function can have one or several operating modes (e.g., low beam ON, low beam OFF, courtesy lighting ON, courtesy lighting OFF). 3. An operating mode can have several Performance S
33、tatus (I, II, III, IV) (e.g., in low beam ON operating mode , the Status II can be associated to low beam OFF during disturbance application with automatic recovery of low beam after disturbance suppression) The function performance status classification is applicable to each function. Examples for
34、the application of how the concept of function performance status classification could be applied to the conducted and radiated immunity testing are included in this document (See Appendix A and B). 5. ESSENTIAL ELEMENTS OF FUNCTION PERFORMANCE STATUS CLASSIFICATION (FPSC) Three elements are require
35、d to describe a function performance status classification. They can be generically applied to all immunity testing for electromagnetic disturbances (both conducted and radiated). These elements are listed below. The application of these essential elements is illustrated in Appendix A and B. 5.1 Tes
36、t Signal and Test Method This element defines the test signals applied to the device under test and the test method used. They are usually referred to in specific test procedures. The test procedures used and methods of application are to be described in specific standards. 5.2 Function Performance
37、Status This element defines the expected performance objectives for the function of the device under test subjected to the test conditions. The four Function Performance status (s) of the function (expected behavior of the function observed during test) are listed below: NOTE 1: This element is indi
38、vidually applicable to every single individual function of a DUT and describes the operational status of the defined function during and after a test. NOTE 2: The minimum function performance status shall be given in each test. An additional test requirement may be agreed between supplier and vehicl
39、e manufacturer. 5.2.1 Status I The function performs as designed during and after the test. 5.2.2 Status II The function does not perform as designed during the test but returns automatically to normal operation after the test. 5.2.3 Status III The function does not perform as designed during the te
40、st and does not return to normal operation without a simple driver/passenger intervention such as turning off/on the DUT or cycling the ignition switch after the disturbance is removed. SAE J1812 Revised JUN2013 Page 5 of 9 5.2.4 Status IV The function does not perform as designed during and after t
41、he test and cannot be returned to proper operation without more extensive intervention such as disconnecting and reconnecting the battery or power feed. The function shall not have sustained any permanent damage as a result of the testing. 5.3 Test Signal Severity Level This element defines the spec
42、ification of test signal severity level (test severity level) of essential signal parameters. The test signal severity level is the stress level applied to the device under test for any given test method. The test signal severity levels should be determined by the vehicle manufacturer and supplier d
43、epending on the required operational characteristics of the function. The severity levels could be separated into number of categories. The number of categories as well as the severity levels associated with each of the categories are to be determined by the vehicle manufacturer (examples for how th
44、e test signal severity level could be applied are included in the Appendices A and B). 6. NOTES 6.1 Marginal Indicia A change bar (l) located in the left margin is for the convenience of the user in locating areas where technical revisions, not editorial changes, have been made to the previous issue
45、 of this document. An (R) symbol to the left of the document title indicates a complete revision of the document, including technical revisions. Change bars and (R) are not used in original publications, nor in documents that contain editorial changes only. PREPARED BY THE SAE ELECTROMAGNETIC COMPAT
46、IBILITY (EMC) STANDARDS COMMITTEE SAE J1812 Revised JUN2013 Page 6 of 9 APPENDIX A - ILLUSTRATION OF FUNCTION PERFORMANCE STATUS CLASSIFICATION A.1 APPLICATION OF FUNCTION PERFORMANCE STATUS AND TEST SIGNAL SEVERITY LEVEL This illustration demonstrates the relationship between the test signal severi
47、ty levels (Severity Levels) and their corresponding Function performance status (Status). In other words, based on the table listed below: The function must exhibit: Status I performance up the severity level L1i, Status II (status I allowed) performance up to severity level L2i, etc. In the test se
48、verity levels, the numerical index (1, 2, 3, 4) denotes the function performance status (I, II, III, IV) and the index i denotes the category (1, 2, 3). FIGURE A1 - ILLUSTRATION OF FUNCTION PERFORMANCE STATUS CLASSIFICATION L4 iFunction Performance Status Test Severity Levels L1 iL2 iL3 iStatus I St
49、atus IV (Status I, II and III allowed) Status III (Status I & II allowed) Status II (Status I allowed) SAE J1812 Revised JUN2013 Page 7 of 9 APPENDIX B - APPLICATION OF FUNCTION PERFORMANCE STATUS CLASSIFICATION B.1 APPLICATION OF FUNCTION PERFORMANCE STATUS CLASSIFICATION WITH MULTIPLE CATEGORIES In certain applications, the function performance status classification is required to be expressed in multiple categories (such as critical natu
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