1、 TECHNICAL REPORT IECCEIRAPPORT TECHNIQUE TR 61496-4First editionPremire dition2007-07Safety of machinery Electro-sensitive protective equipment Part 4: Particular requirements for equipment using vision based protective devices (VBPD) Scurit des machines Equipements de protection lectro-sensibles P
2、artie 4: Exigences particulires pour les quipements utilisant des dispositifs protecteurs par vision (VBPD) Reference number Numro de rfrence IEC/CEI/TR 61496-4:2007 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2007 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no pa
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15、ire dition2007-07Safety of machinery Electro-sensitive protective equipment Part 4: Particular requirements for equipment using vision based protective devices (VBPD) Scurit des machines Equipements de protection lectro-sensibles Partie 4: Exigences particulires pour les quipements utilisant des dis
16、positifs protecteurs par vision (VBPD) PRICE CODE CODE PRIX T For price, see current cataloguePour prix, voir catalogue en vigueur Commission Electrotechnique InternationaleInternational Electrotechnical Commission 2 TR 61496-4 IEC:2007 CONTENTS FOREWORD.3 INTRODUCTION.5 1 Scope.6 2 Normative refere
17、nces6 3 Terms and definitions .7 4 Functional, design and environmental requirements 8 4.1 Functional requirements 8 4.2 Design requirements11 4.3 Environmental requirements 13 5 Testing .14 5.1 General .14 5.2 Functional tests .15 5.4 Environmental tests .19 6 Marking for identification and safe us
18、e 23 6.1 General .24 7 Accompanying documents 24 Figure 1 Side view of VBPD using a passive pattern .9 Figure 2 Examples of circular disc test pieces according to 4.2.13.3 .10 Figure 3 Lux measurement setup at indirect light tests22 Table 1 Verification of detection capability requirements (see also
19、 4.2.12) 16 TR 61496-4 IEC:2007 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ SAFETY OF MACHINERY ELECTRO-SENSITIVE PROTECTIVE EQUIPMENT Part 4: Particular requirements for equipment using vision based protective devices (VBPD) FOREWORD 1) The International Electrotechnical Commission (IEC) is a wor
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31、IEC 61496-4, which is a technical report, has been prepared by IEC technical committee 44: Safety of machinery Electrotechnical aspects, in collaboration with CENELEC technical committee 44X: Safety of machinery Electrotechnical aspects 4 TR 61496-4 IEC:2007 The text of this technical report is base
32、d on the following documents: Enquiry draft Report on voting 44/536/DTR 44/545/RVC Full information on the voting for the approval of this technical report can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives,
33、Part 2. This technical report constitutes Part 4 of the IEC 61496 series and is intended to be read in conjunction with IEC 61496-1. When a particular clause or subclause of IEC 61496-1 is not mentioned in this technical report, that clause or subclause applies as far as is reasonable. Where this te
34、chnical report states “addition“, “modification“ or “replacement“, the relevant text of IEC 61496-1 is to be adapted accordingly. A list of all the parts of IEC 61496, under the general title Safety of machinery Electro-sensitive protective equipment, can be found on the IEC website. The committee h
35、as decided that the contents of this publication will remain unchanged until the maintenance result date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised ed
36、ition, or amended. TR 61496-4 IEC:2007 5 INTRODUCTION This technical report provides information related to the design, construction and testing of electro-sensitive protective equipment (ESPE) that employs vision-based protective devices (VBPDs) for the sensing function for the safeguarding of mach
37、inery. At the time of writing this technical report, there were no commercial examples of VBPDs on the market. Therefore, to provide an example of a VBPD for the writing of this technical report, the working group used the results of a Japanese research project. The working group understands that th
38、e possibilities for VBPDs are much greater than the limited technologies demonstrated by this example. When real systems do arrive, it is believed that some of the basic concepts put forth in this technical report can be used as a guide for the evaluation and testing of those first systems. It is an
39、ticipated that the characteristics and requirements for VBPDs will vary significantly depending on the underlying technologies and methodologies employed. Therefore, it is planned that this technical report will be divided into subparts which address the unique requirements of the different types of
40、 vision-based devices (for example IEC 61496-4-1 would cover general requirements and IEC 61496-4-2 would cover requirements unique to devices using a passive reference pattern). 6 TR 61496-4 IEC:2007 SAFETY OF MACHINERY ELECTRO-SENSITIVE PROTECTIVE EQUIPMENT Part 4: Particular requirements for equi
41、pment using vision based protective devices (VBPD) 1 Scope NOTE As an example for the development of this technical report, a VBPD is defined as consisting of a single image-sensing device viewing one two-dimensional image against a passive pattern as the background and where the detection principle
42、 is blocking the view of the pattern. Information about the thickness, shape and surface characteristics of the object is not required for detection. A passive pattern is not created by a light source. Replacement: This part of IEC 61496 specifies requirements for the design, construction and testin
43、g of electro-sensitive protective equipment (ESPE) designed specifically to detect persons as part of a safety-related system, employing vision-based protective devices (VBPDs) for the sensing function. Special attention is directed to features which ensure that an appropriate safety-related perform
44、ance is achieved. An ESPE may include optional safety-related functions, the requirements for which are given in Annex A of IEC 61496-1 and this technical report. This technical report does not specify the dimensions or configurations of the detection zone and its disposition in relation to hazardou
45、s parts for any particular application, nor what constitutes a hazardous state of any machine. It is restricted to the functioning of the ESPE and how it interfaces with the machine. It is limited to automatic vision-based ESPEs that do not require human intervention for detection. It is limited to
46、automatic vision-based ESPEs that detect objects entering into, or present in, a detection zone(s). Excluded from this part are VBPD employing radiation at wavelengths outside the range 400 nm to 1 500 nm. This technical report does not address those aspects required for complex classification or di
47、fferentiation of the object detected. This technical report may be relevant to applications other than those for the protection of persons, for example the protection of machinery or products from mechanical damage. In those applications, additional requirements may be necessary, for example when th
48、e materials that are to be recognized by the sensing function have different properties from those of persons. This technical report does not deal with EMC emission requirements. 2 Normative references Additions: IEC 60825-1:2007, Safety of laser products Part 1: Equipment classification and require
49、ments ISO 13855:2002, Safety of machinery Positioning of protective equipment with respect to the approach speeds of parts of the human body TR 61496-4 IEC:2007 7 3 Terms and definitions Replacement: 3.3 detection capability ability to detect the specified test pieces (see 4.2.13) in the specified detection zone NOTE Detection capability is generally measur
