BS ISO IEC 15426-2-2015 Information technology Automatic identification and data capture techniques Bar code verifier conformance specification Two-dimensional symbols《信息技术 自动识别和数据.pdf

1、BSI Standards PublicationBS ISO/IEC 15426-2:2015Information technology Automatic identification anddata capture techniques Bar code verifier conformancespecificationPart 2: Two-dimensional symbolsBS ISO/IEC 15426-2:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation

2、of ISO/IEC15426-2:2015.The UK participation in its preparation was entrusted to TechnicalCommittee IST/34, Automatic identification and data capturetechniques.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include

3、 all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2015. Published by BSI StandardsLimited 2015ISBN 978 0 580 73725 1ICS 35.040Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Sta

4、ndard was published under the authority of theStandards Policy and Strategy Committee on 30 September 2015.Amendments issued since publicationDate Text affectedBS ISO/IEC 15426-2:2015Information technology Automatic identification and data capture techniques Bar code verifier conformance specificati

5、on Part 2: Two-dimensional symbolsTechnologies de linformation Techniques automatiques didentification et de capture des donnes Spcifications de conformit des vrificateurs de codes barres Partie 2: Symboles bidimensionnelsINTERNATIONAL STANDARDISO/IEC15426-2Reference numberISO/IEC 15426-2:2015(E)Sec

6、ond edition2015-08-01 ISO/IEC 2015BS ISO/IEC 15426-2:2015ii ISO/IEC 2015 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO/IEC 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 me

7、ans, electronic or mechanical, including 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-12

8、14 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgISO/IEC 15426-2:2015(E)BS ISO/IEC 15426-2:2015ISO/IEC 15426-2:2015(E)Foreword ivIntroduction v1 Scope . 12 Conformance . 13 Normative references 14 Terms and definitions . 25 Symbols 26 Functional requ

9、irements . 26.1 General requirements . 26.2 Reflectance calibration . 26.3 Mandatory functions 36.3.1 Verifiers for multi-row bar code symbols 36.3.2 Verifiers for two-dimensional matrix symbols 36.4 Optional functions 37 General constructional and operational requirements . 47.1 Installation, opera

10、tion and maintenance . 47.2 Power supply 47.3 Temperature 47.3.1 Operating temperature range . 47.3.2 Storage temperature range . 47.4 Humidity . 47.5 Ambient light immunity 48 Test requirements . 48.1 Test methods . 48.1.1 Selection of equipment for testing . 58.1.2 Scanning parameters 58.1.3 Test

11、measurements 58.2 Test environment 58.3 Primary reference test symbols . 58.4 Test report . 69 Certification and labelling 610 Equipment specification . 6Annex A (normative) Primary reference test symbols 8Annex B (normative) Verification requirements for primary reference test symbols 13Bibliograph

12、y .14 ISO/IEC 2015 All rights reserved iiiContents PageBS ISO/IEC 15426-2:2015ISO/IEC 15426-2:2015(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

13、carried 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 wo

14、rk. ISO 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 diff

15、erent approval 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 ma

16、y be the 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/paten

17、ts).Any 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 principle

18、s in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/IEC JTC 1, Information technology, Subcommittee SC 31, Automatic identification and data capture techniques.This second edition cancels and replace

19、s the first edition (ISO/IEC 15426-2:2005), which has been technically revised. It also incorporates the Technical Corrigendum ISO/IEC 15426-2:2005/Cor1:2008.ISO/IEC 15426 consists of the following parts, under the general title Information technology Automatic identification and data capture techni

20、ques Bar code verifier conformance specification : Part 1: Linear symbols Part 2: Two-dimensional symbolsiv ISO/IEC 2015 All rights reservedBS ISO/IEC 15426-2:2015ISO/IEC 15426-2:2015(E)IntroductionThe technology of bar coding is based on the recognition of patterns encoded, in bars and spaces or in

21、 a matrix of modules of defined dimensions, according to rules defining the translation of characters into such patterns, known as the symbology specification. Symbology specifications may be categorised into linear symbols, on the one hand, and two-dimensional symbols on the other; the latter may i

22、n turn be sub-divided into multi-row bar codes sometimes referred to as “stacked bar codes”, and “two-dimensional matrix codes”.Multi-row bar codes are constructed graphically as a series of rows of symbol characters, representing data and overhead components, placed in a defined vertical arrangemen

23、t to form a (normally) rectangular symbol, which contains a single data message. Each row of the symbol has the characteristics of a linear bar code symbol and may be read by linear symbol scanning techniques.Two-dimensional matrix symbols are usually rectangular arrangements of modules placed at th

24、e intersections of a grid of two (sometimes more) axes; the coordinates of each module need to be known in order to determine its significance, and the symbol must therefore be analysed two-dimensionally before it can be decoded.Unless the context requires otherwise, the term “symbol” in this Intern

25、ational Standard may refer to either type of symbology.The symbol, as a machine-readable data carrier, must be produced in such a way as to be reliably decoded at the point of use, if it is to fulfil its basic objective. Standard methodologies have been developed for measuring and assessing the qual

26、ity of symbols for process control and quality assurance purposes during symbol production as well as afterwards.Manufacturers of bar code equipment, the producers of bar code symbols and the users of bar code technology require publicly available standard conformance specifications for measuring eq

27、uipment applying these methodologies, to ensure the accuracy and consistency of performance of this equipment.This International Standard is intended to be similar in technical content (mutatis mutandis) to ISO/IEC 15426-1 (the linear bar code verifier conformance standard), on which it has been bas

28、ed. It is intended to be read in conjunction with the symbology specification applicable to the bar code symbol being tested, which provides symbology-specific detail necessary for its application. ISO/IEC 2015 All rights reserved vBS ISO/IEC 15426-2:2015BS ISO/IEC 15426-2:2015Information technology

29、 Automatic identification and data capture techniques Bar code verifier conformance specification Part 2: Two-dimensional symbols1 ScopeThis part of ISO/IEC 15426 defines test methods and minimum accuracy criteria applicable to verifiers using the methodologies of ISO/IEC 15415 for multi-row bar cod

30、e symbols and two-dimensional matrix symbologies, and specifies reference calibration standards against which these should be tested. This part of ISO/IEC 15426 provides for testing of representative samples of the equipment.NOTE ISO/IEC 15426-1 applies to verifiers for linear bar code symbols.2 Con

31、formanceThe instrument shall be considered to conform with this part of ISO/IEC 15426 if it performs the functions defined in 6.3 and if the results of measurements of primary reference test symbols carried out in accordance with Clause 8 demonstrate that the arithmetic means of the 10 measurements

32、(for multi-row bar code symbols) or five measurements (for two-dimensional matrix symbols) of individual reported parameters are within the tolerances shown in Table 1 below.Table 1 Tolerances for measured parameter valuesParameter Symbology type ToleranceRmaxand/or RsBoth 5 % reflectanceRminand/or

33、RbBoth 3 % reflectanceUEC Both 0,0Decodability Multi-row 0,08Defects Multi-row 0,08Codeword Yield Multi-row 0,08Grid Nonuniformity Matrix 0,06Axial Nonuniformity Matrix 0,02Contrast Uniformity (Mod-ulation)Matrix0,08 of the MOD value described in A.3.2Fixed Pattern Damage MatrixWithin calibrated gra

34、de boundariesNOTE The tolerances in Table 1 are additional to any tolerances stated by the supplier of the primary reference test symbols.3 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dat

35、ed references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.INTERNATIONAL STANDARD ISO/IEC 15426-2:2015(E) ISO/IEC 2015 All rights reserved 1BS ISO/IEC 15426-2:2015ISO/IEC 15426-2:2015(E)ISO/IEC 15415, Inform

36、ation technology Automatic identification and data capture techniques Bar code symbol print quality test specification Two-dimensional symbolsISO/IEC 15416, Information technology Automatic identification and data capture techniques Bar code symbol quality test specifications Linear symbolsISO/IEC 1

37、9762-1, Information technology Automatic identification and data capture (AIDC) techniques Harmonized vocabulary Part 1: General terms relating to AIDCISO/IEC 19762-2, Information technology Automatic identification and data capture (AIDC) techniques Harmonized vocabulary Part 2: Optically readable

38、media (ORM)4 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO/IEC 15415, ISO/IEC 19762-1, ISO/IEC 19762-2 and the following apply.4.1primary reference test symbolbar code symbol intended for the testing of the accuracy of bar code verifiers and manufactu

39、red to close tolerances, of at least ten times the precision listed in Table 1, by methods traceable to national standards5 SymbolsRbBar Reflectance, as defined in ISO/IEC 15416RmaxMaximum reflectance, as defined in ISO/IEC 15416RminMinimum reflectance, as defined in ISO/IEC 15416RsSpace Reflectance

40、, as defined in ISO/IEC 154166 Functional requirements6.1 General requirementsThe general requirement of a two-dimensional symbol verifier is that it shall provide assessments of the quality of a bar code symbol which are accurate and consistent, both in relation to measurements of a specific symbol

41、 made with the same instrument over a period of time and in relation to measurements of a specific symbol made by different instruments. Such consistency is essential to enable valid comparisons to be made of assessments of a symbol verified at two different times or on two different instruments.6.2

42、 Reflectance calibrationVerifiers shall have means of calibration and adjustment where necessary of reflectance values against reference reflectance calibration samples. Two calibration points should be used, one as near the high reflectance end of the range and the other as near the low reflectance

43、 end of the range as possible.ISO/IEC 15415 defines the reference reflectance material against which these samples shall be calibrated.2 ISO/IEC 2015 All rights reservedBS ISO/IEC 15426-2:2015ISO/IEC 15426-2:2015(E)6.3 Mandatory functions6.3.1 Verifiers for multi-row bar code symbolsA verifier for m

44、ulti-row bar code symbols applying the methodology defined in ISO/IEC 15415 shall be capable of: collecting reflectance measurements from points along multiple scan paths across a bar code symbol; establishing scan reflectance profiles from these measurements; analysing the scan reflectance profiles

45、; reporting individual scan reflectance profile parameter grades and profile grades; reporting the Codeword Yield value and grade; reporting the Unused Error Correction value and grade; determining and reporting an overall symbol grade; reporting the decoded data.6.3.2 Verifiers for two-dimensional

46、matrix symbolsA verifier for two-dimensional matrix symbols applying the methodology defined in ISO/IEC 15415 shall be capable of: collecting reflectance measurements from a sample area framing the test symbol and its quiet zones, extending for certain symbol sizes 20X beyond the quiet zones (see Cl

47、ause 10); establishing a reference grey-scale image and a binarised image as described in ISO/IEC 15415; decoding these images in accordance with the applicable reference decode algorithm; reporting individual values and grades for each of the parameters listed in ISO/IEC 15415; determining and repo

48、rting an overall symbol grade; appending an asterisk to the reported overall symbol grade, for certain symbol sizes, under the additional reflectance check provisions of ISO/IEC 15415; reporting the decoded data.The method of reporting is not specified but may be by means of, for example, a display

49、screen in the instrument, a printed report, or electronic communication with another device such as a computer.6.4 Optional functionsUsers of verifiers have differing requirements for the amount of detail reported by the instrument, and a verifier may therefore perform additional functions, for example: reporting of number of scan reflectance profiles or images on which the overall symbol grade is based; reporting of print growth in one or both axes; reporting of symbology verifie