1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationGeometrical product specifications (GPS) Surface texture: Profile method; Measurement standardsPart 2: Software measurement standardsBS EN ISO 5436-2:2012National forewordThis Br
2、itish Standard is the UK implementation of EN ISO 5436-2:2012. Itsupersedes BS EN ISO 5436-2:2001 which is withdrawn.The UK participation in its preparation was entrusted to Technical CommitteeTDW/4, Technical Product Realization.A list of organizations represented on this committee can be obtained
3、onrequest to its secretary.This publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application. The British Standards Institution 2012Published by BSI Standards Limited 2012ISBN 978 0 580 77834 6ICS 17.040.30Compliance with a Brit
4、ish Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of the StandardsPolicy and Strategy Committee on 31 October 2012.Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN ISO 5436-2:2012EUROPEAN STANDARD NORM
5、E EUROPENNE EUROPISCHE NORM EN ISO 5436-2 October 2012 ICS 17.040.30 Supersedes EN ISO 5436-2:2001English Version Geometrical product specifications (GPS) - Surface texture: Profile method; Measurement standards - Part 2: Software measurement standards (ISO 5436-2:2012) Spcification gomtrique des pr
6、oduits (GPS) - tat de surface: Mthode du profil; talons - Partie 2: talons logiciels (ISO 5436-2:2012) Geometrische Produktspezifikation (GPS) - Oberflchenbeschaffenheit: Tastschnittverfahren; Normale - Teil 2: Software-Normale (ISO 5436-2:2012) This European Standard was approved by CEN on 25 Septe
7、mber 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be ob
8、tained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the
9、CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Irela
10、nd, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue M
11、arnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 5436-2:2012: EBS EN ISO 5436-2:2012EN ISO 5436-2:2012 (E) 2 Contents Page Foreword 3BS EN ISO 5436-2:2012EN ISO 5436-2:2012 (E) 3 Foreword This docu
12、ment (EN ISO 5436-2:2012) has been prepared by Technical Committee ISO/TC 213 “Dimensional and geometrical product specifications and verification“ in collaboration with Technical Committee CEN/TC 290 “Dimensional and geometrical product specification and verification” the secretariat of which is he
13、ld by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by April 2013, and conflicting national standards shall be withdrawn at the latest by April 2013. Attention is drawn to the possibility th
14、at some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 5436-2:2001. According to the CEN/CENELEC Internal Regulations, the national standards organis
15、ations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Ma
16、lta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 5436-2:2012 has been approved by CEN as a EN ISO 5436-2:2012 without any modification. BS EN ISO 5436-2:2012ISO 5436-2:2012(E) ISO 20
17、12 All rights reserved iiiContents PageIntroduction v1 Scope 12 Normative references . 13 Terms and definitions . 14 Type F software measurement standards 24.1 General . 24.2 Type F1 Reference data 34.3 Type F2 Reference software 35 File format for Type F1 reference data . 35.1 General . 35.2 Record
18、 1 Header . 45.3 Record 2 Other information (optional and non-mandatory) . 65.4 Record 3 data . 85.5 Record 4 checksum 96 Software measurement standard certificate 9Annex A (informative) Example of file format . 11Annex B (informative) Relation to the GPS matrix model 15Bibliography .17BS EN ISO 543
19、6-2:2012ISO 5436-2:2012(E)IntroductionThis part of ISO 5436 is a geometrical product specification (GPS) standard and is to be regarded as a general GPS standard (see ISO/TR 14638). It influences chain link 6 of the chain of standards on roughness, waviness and primary profiles.The ISO/GPS Masterpla
20、n given in ISO/TR 14638 gives an overview of the ISO/GPS system of which this document is a part. The fundamental rules of ISO/GPS given in ISO 8015 apply to this document and the default decision rules given in ISO 14253-1 apply to specifications made in accordance with this document, unless otherw
21、ise indicated.For more detailed information on the relationship of this part of ISO 5436 to other standards and the GPS matrix model, see Annex B.This part of ISO 5436, together with ISO 5436-1, introduces two new measurement standards: Type E, for calibrating the profile co-ordinate system; Type F,
22、 for calibrating software. This part of ISO 5436 is concerned with software measurement standards. ISO 2012 All rights reserved vBS EN ISO 5436-2:2012Geometrical product specifications (GPS) Surface texture: Profile method; Measurement standards Part 2: Software measurement standards1 ScopeThis part
23、 of ISO 5436 defines Type F1 and Type F2 software measurement standards (etalons) for verifying the software of measuring instruments. It also defines the file format of Type F1 software measurement standards for the calibration of instruments used for measuring the surface texture by the profile me
24、thod defined in ISO 3274.NOTE 1 Throughout this part of ISO 5436, the term “softgauge” is used as a substitute for “software measurement standard Type F1”.NOTE 2 Formerly, “measurement standards” were referred to as “calibration specimens”.NOTE 3 ISO 3274 only refers to instruments with independent
25、reference datums.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 3274:19
26、96, Geometrical Product Specifications (GPS) Surface texture: Profile method Nominal characteristics of contact (stylus) instrumentsISO 5436-1:2000, Geometrical Product Specifications (GPS) Surface texture: Profile method; Measurement standards Part 1: Material measuresISO 12085:1996, Geometrical Pr
27、oduct Specifications (GPS) Surface texture: Profile method Motif parametersISO 16610-21:2011, Geometrical product specifications (GPS) Filtration Part 21: Linear profile filters: Gaussian filtersISO 17450-2:2012, Geometrical product specifications (GPS) General concepts Part 2: Basic tenets, specifi
28、cations, operators, uncertainties and ambiguitiesISO/IEC Guide 98-3:2008, Uncertainty of measurement Part 3: Guide to the expression of uncertainty in Measurement (GUM:1995)ISO/IEC Guide 99:2007, International vocabulary of metrology Basic and general concepts and associated terms (VIM)3 Terms and d
29、efinitionsFor the purposes of this document, the terms and definitions given in ISO 3274, ISO 5436-1, ISO 12085, ISO 16610-21:2011, ISO/IEC Guide 99 and the following apply.3.1software measurement standardreference data or reference software intended to reproduce the value of a measurand with known
30、uncertainty in order to verify the software used to calculate the measurand in a measuring instrumentINTERNATIONAL STANDARD ISO 5436-2:2012(E) ISO 2012 All rights reserved 1BS EN ISO 5436-2:2012ISO 5436-2:2012(E)3.2ASCII stringarray of ASCII characters terminating in 3.3integer2-byte representation
31、of whole numberNOTE 1 Integers have a minimum value of 32 768 and a maximum value of +32 767.NOTE 2 The less significant bytes are stored in memory addresses lower than those in which are stored the more significant bytes.3.4unsigned integer2-byte representation of a positive whole numberNOTE 1 Unsi
32、gned integers have a minimum value of 0 and a maximum value of 65 535.NOTE 2 The less significant bytes are stored in memory addresses lower than those in which are stored the more significant bytes.3.5long integer4-byte representation of a whole numberNOTE 1 Long integers have a minimum value of 2
33、147 483 648 and a maximum value of +2 147 483 647.NOTE 2 The less significant bytes are stored in memory addresses lower than those in which are stored the more significant bytes.3.6single precision float4-byte representation consisting of a sign bit, an 8-bit excess 127 binary exponent and a 23-bit
34、 mantissa representing numbers between 1,0 and 2,0NOTE 1 Since the high-order bit of the mantissa is always 1, it is not stored in the number.NOTE 2 Single precision floats have an approximate range of 1,17e38to 3,4e+38.NOTE 3 The less significant bytes are stored in memory addresses lower than thos
35、e in which the more significant bytes are stored.3.7double precision float8-byte representation consisting of a sign bit, an 11-bit excess 1 023 binary exponent, and a 52-bit mantissa, plus the implied high-order 1 bitNOTE 1 Double precision floats have an approximate range of 2,22e308to 2,22e+308.N
36、OTE 2 The less significant bytes are stored in memory addresses lower than those in which the more significant bytes are stored.4 Type F software measurement standards4.1 GeneralType F software measurement standards are designed to verify the measuring instruments software (i.e. filter algorithms, p
37、arameter calculations, etc.).These measurement standards can contain a form component which it shall be possible to remove.2 ISO 2012 All rights reservedBS EN ISO 5436-2:2012ISO 5436-2:2012(E)4.2 Type F1 Reference dataType F1 measurement standards are computer data files that depict a digital repres
38、entation of a primary profile in a suitable recording medium.Most of the operations between the total profile and primary profile are instrument-specific and, as a result, are difficult to standardize. The primary profile is currently the first point where all the subsequent operations for the defin
39、ition of surface texture measurands are standardized and is thus chosen as the standardized point of entry for type F1 softgauges.A non-exhaustive, non-ordered, informative list of operations between the total profile and primary profile may include the following. Adjustment for calibration There ar
40、e many different calibration models: gain factor, polynomial corrections for curvilinear co-ordinates, interpolation method corrections for curvilinear co-ordinates, etc. Stylus tip correction Corrects for the finite size and shape of the stylus. Decimation Reduces the number of the data points for
41、subsequent calculation. Equalization of interval of data points Makes the data by using mathematical interpolation. Ls filtering Convolutes with previous filtering (i.e. an anti-aliasing filter of an A/D convertor) to make a true Gaussian filter. End effects Removes a portion of the profile at the b
42、eginning and at the end to reduce possible end effects due to, for example, Ls filtering, stylus tip correction, etc. Fitting of form by association Total least squares, linear least squares, Chebychev (minimum zone), fitting using robust norms (i.e. L1), one-sided fitting, Theil-Sen-type estimators
43、. Removal of form from profile Projection, orthogonal to line normal.If the entry point for the F1 standard is before the primary profile (e.g. the total profile), the signal flow to generate the primary profile (by steps like those exemplarily listed above) shall be agreed upon between the producer
44、 and the user of the F1 standard.NOTE The certified results for mathematically designed synthetic data can often be calculated directly without the need for certification by Type F2 measurement standards.4.3 Type F2 Reference softwareType F2 measurement standards are reference software. Reference so
45、ftware consists of traceable computer software against which software in a measuring instrument can be compared.Type F2 measurement standards are used to test software by inputting a common data set into both the software under test/calibration and the reference software, then comparing the results
46、from the software under test with the certified results from the reference software.NOTE Type F2 measurement standards can also be used to certify Type F1 measurement standards.Reference software values shall be traceable.5 File format for Type F1 reference data5.1 GeneralThe file extension of this
47、file protocol is .smd. The file protocol for the softgauge is divided into four separate sections or records. Each record is composed of lines of information and, within each line, there are various “fields” in which the information is coded. The file format is in 7-bit ASCII character code. Each li
48、ne is terminated by a carriage return () and line feed (). ISO 2012 All rights reserved 3BS EN ISO 5436-2:2012ISO 5436-2:2012(E)Each record is terminated by an end of record () with a carriage return () and line feed (). The last record is further terminated by an end of file (). For each field, the
49、 separator consists of at least one space.An example of a software file format is given in Annex A.5.2 Record 1 HeaderThe first record contains a fixed header that includes the following information: revision of the softgauge file format; file identifier; GPS feature type, number and name of the stored feature axis information; number of data points in the profile; scaling of the data points; resolution of the data points.The first line of record 1
