Replacement:<\/i><\/p>\n
This part of IEC 61496<\/span> <\/span> specifies requirements for the design, construction and testing of electro-sensitive protective equipment (ESPE) designed specifically to detect persons or parts of persons as part of a safety-related system, employing vision-based protective devices (VBPDs) using stereo vision techniques (VBPDST) for the sensing function. Special attention is directed to features which ensure that an appropriate safety-related performance is achieved. An ESPE may include optional safety-related functions, the requirements for which are given in Annex A of IEC 61496\u20111:2012<\/span> <\/span> and this Technical Specification.<\/p>\n This part of IEC 61496<\/span> <\/span> does not specify the dimensions or configurations of the detection zone and its disposition in relation to hazardous 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.<\/p>\n The detection principle is based on the evaluation of images from different viewing points (stereoscopic view) for the determination of distance information. This distance information is used to determine the location of an object(s).<\/p>\n This part of IEC 61496<\/span> <\/span> is limited to vision based ESPEs with distances (stereo base) and directions between the different imaging devices fixed during manufacture.<\/p>\n<\/li>\n It is limited to vision based ESPEs, with a minimum distance from the sensing device to the detection zone of 4 times of the stereo base.<\/p>\n<\/li>\n It is limited to vision based ESPEs that can detect objects with at least 5 pixel diameter in the image plane.<\/p>\n<\/li>\n It is limited to vision based ESPEs that do not require human intervention for detection.<\/p>\n<\/li>\n It is limited to vision based ESPEs that detect objects entering into or being present in a detection zone(s).<\/p>\n<\/li>\n It is limited to VBPDSTs employing radiation at wavelengths within the range 400 nm to 1 500 nm.<\/p>\n<\/li>\n This part of IEC 61496<\/span> <\/span> does not address those aspects required for complex classification or differentiation of the object detected.<\/p>\n<\/li>\n This part of IEC 61496<\/span> <\/span> does not consider the aspects of a moving ESPE installation.<\/p>\n<\/li>\n<\/ul>\n Additional requirements and tests can apply in the following cases:<\/p>\n Use of multi-spectral (colour) techniques;<\/p>\n<\/li>\n Setups other than as shown in Figures of 4.1.2<\/span> (e.g. changing backgrounds, horizontal orientation of the optical axis with respect to the floor);<\/p>\n<\/li>\n Intended for outdoor applications.<\/p>\n<\/li>\n<\/ul>\n This technical specification is relevant for VBPDSTs having a stated detection capability up to 200 mm.<\/p>\n This technical specification may be relevant to applications other than those for the protection of persons or parts of persons like arm or fingers (in the range 14 mm to 200 mm), for example the protection of machinery or products from mechanical damage. In those applications, additional requirements can be necessary, for example when the materials that are to be recognized by the sensing function have different properties from those of persons.<\/p>\n This technical specification does not deal with EMC emission requirements.<\/p>\n Safety of machinery. Electro-sensitive protective equipment – Particular requirements for equipment using vision based protective devices (VBPD). Additional requirements when using stereo vision techniques (VBPDST)<\/b><\/p>\n\n
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PDF Catalog<\/h4>\n
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\n PDF Pages<\/th>\n PDF Title<\/th>\n<\/tr>\n \n 4<\/td>\n CONTENTS <\/td>\n<\/tr>\n \n 7<\/td>\n FOREWORD <\/td>\n<\/tr>\n \n 9<\/td>\n INTRODUCTION <\/td>\n<\/tr>\n \n 10<\/td>\n 1 Scope <\/td>\n<\/tr>\n \n 11<\/td>\n 2 Normative references
3 Terms and definitions <\/td>\n<\/tr>\n\n 12<\/td>\n Figures
Figure 1 \u2013 Image planes in imaging device of a VBPDST <\/td>\n<\/tr>\n\n 14<\/td>\n 4 Functional, design and environmental requirements
4.1 Functional requirements
4.1.2 Sensing function <\/td>\n<\/tr>\n\n 15<\/td>\n Figure 2 \u2013 3D view of a vision based protective device using stereo vision techniques (VBPDST) <\/td>\n<\/tr>\n \n 16<\/td>\n Figure 3 \u2013 2D view of a vision based protective device using stereo vision techniques (VBPDST) <\/td>\n<\/tr>\n \n 17<\/td>\n 4.1.3 Types of ESPE
4.1.6 Zone with limited detection capability <\/td>\n<\/tr>\n\n 18<\/td>\n 4.2 Design requirements
4.2.2 Fault detection requirements <\/td>\n<\/tr>\n\n 19<\/td>\n 4.2.12 Integrity of the VBPDST detection capability <\/td>\n<\/tr>\n \n 21<\/td>\n 4.2.13 Test pieces for type testing <\/td>\n<\/tr>\n \n 23<\/td>\n 4.2.14 Wavelength
4.2.15 Radiation intensity
4.2.16 Mechanical construction
4.3 Environmental requirements
4.3.1 Ambient air temperature range and humidity
4.3.5 Ambient light intensity
4.3.6 Light interference <\/td>\n<\/tr>\n\n 24<\/td>\n 4.3.7 Pollution interference
4.3.8 Manual interference <\/td>\n<\/tr>\n\n 25<\/td>\n 4.3.9 Optical occlusion (eclipsed by small object)
4.3.10 Drift or ageing of components
5 Testing
5.1 General
5.1.2 Test conditions <\/td>\n<\/tr>\n\n 26<\/td>\n 5.1.4 Test conditions and test plan
5.2 Functional tests
5.2.1 Sensing function <\/td>\n<\/tr>\n\n 27<\/td>\n Tables
Table 1 \u2013 Verification of detection capability requirements (see also 4.2.12) <\/td>\n<\/tr>\n\n 30<\/td>\n 5.2.9 Verification of optical performance
5.2.10 Wavelength
5.2.11 Radiation intensity
5.3 Performance testing under fault conditions
5.3.2 Type 1 ESPE
5.3.3 Type 2 ESPE
Figure 4 \u2013 Examples for periodic surface structures on the background <\/td>\n<\/tr>\n\n 31<\/td>\n 5.3.4 Type 3 ESPE
5.3.5 Type 4 ESPE
5.4 Environmental tests
5.4.2 Ambient temperature variation and humidity
5.4.4 Mechanical influences <\/td>\n<\/tr>\n\n 32<\/td>\n 5.4.6 Light interference
Table 2 \u2013 Overview of light interference tests <\/td>\n<\/tr>\n\n 36<\/td>\n Figure 5 \u2013 Test setup for indirect light interference on the background <\/td>\n<\/tr>\n \n 37<\/td>\n Figure 6 \u2013 Test setup for VBPDST of identical design with PAPT <\/td>\n<\/tr>\n \n 38<\/td>\n 5.4.7 Pollution interference
Figure 7 \u2013 Test setup for direct light interference on the sensing device <\/td>\n<\/tr>\n\n 39<\/td>\n 5.4.8 Manual interference
5.4.9 Optical occlusion <\/td>\n<\/tr>\n\n 40<\/td>\n 6 Marking for identification and for safe use
6.1 General
7 Accompanying documents <\/td>\n<\/tr>\n\n 42<\/td>\n Annex A (normative) Optional functions of the ESPE
A.9 Setting the detection zone and\/or other safety-related parameters
A.9.1 Functional requirements
A.9.2 Verification <\/td>\n<\/tr>\n\n 43<\/td>\n A.10 Selection of multiple detection zones
A.10.1 Functional requirements
A.10.2 Verification <\/td>\n<\/tr>\n\n 44<\/td>\n Annex B (normative) Catalogue of single faults affecting the electrical equipment of the ESPE, to be applied as specified in 5.3
B.7 Imaging sensor <\/td>\n<\/tr>\n\n 45<\/td>\n Annex AA (informative) The positioning of VBPDST employing a volume as a detection zone in respect of parts of the human body
AA.1 Calculation of distances for electro-sensitive protective equipment employing vision based protective devices (VBPDST)
AA.1.1 General
AA.1.2 Calculation of the overall minimum distance So <\/td>\n<\/tr>\n\n 46<\/td>\n AA.1.3 Vision based protective devices with a detection capability > 40 mm and \u2264\u00a055\u00a0mm <\/td>\n<\/tr>\n \n 47<\/td>\n AA.1.4 Vision based protective devices with a detection capability > 55\u00a0mm and \u2264\u00a0200\u00a0mm
AA.1.5 Examples of detection zone and tolerance zone
Figure AA.1 \u2013 Minimum distance S \u2013 Example 1 <\/td>\n<\/tr>\n\n 48<\/td>\n Figure AA.2 \u2013 Overall minimum distance So without tolerance zone \u2013 Example 1
Figure AA.3 \u2013 Overall minimum distance So including tolerance zone \u2013 Example 1 <\/td>\n<\/tr>\n\n 49<\/td>\n Figure AA.4 \u2013 Minimum distance S \u2013 Example 2 <\/td>\n<\/tr>\n \n 50<\/td>\n Figure AA.5 \u2013 Overall minimum distance So without tolerance zone \u2013 Example 2
Figure AA.6 \u2013 Overall minimum distance So including tolerance zone \u2013 Example 2 <\/td>\n<\/tr>\n\n 51<\/td>\n AA.2 Application examples for body detection of a VBPDST employing a volume as a detection zone <\/td>\n<\/tr>\n \n 52<\/td>\n Figure AA.7 \u2013 Application example for body detection of a VBPDST employing a volume as a detection zone <\/td>\n<\/tr>\n \n 53<\/td>\n Annex BB (informative) Relationship between position accuracy and tolerance zones for VBPDST
BB.1 Probability of detection
Figure BB.1 \u2013 Relationship between test piece position and the probability of detection <\/td>\n<\/tr>\n\n 54<\/td>\n BB.2 Tolerance zone related to probability
BB.3 Determination of tolerance zone for systems not providing object distance information
Figure\u00a0BB.2 \u2013 Example for measurement of the probability of detection <\/td>\n<\/tr>\n\n 55<\/td>\n BB.4 Determination of tolerance zone for systems providing distance information <\/td>\n<\/tr>\n \n 56<\/td>\n BB.5 Tolerance zone related to systematic interferences
BB.6 Adding the tolerance zone on the outer border of the detection zone
Figure BB.3 \u2013 Relationship between detection zone and tolerance zone <\/td>\n<\/tr>\n\n 57<\/td>\n Figure BB.4 \u2013 Overall minimum distance So including tolerance zone <\/td>\n<\/tr>\n \n 58<\/td>\n Annex CC (informative) Basic principles of physics for contrast of convex homogeneous bodies
CC.1 Illumination on a surface element <\/td>\n<\/tr>\n\n 59<\/td>\n Figure CC.1 \u2013 Illumination model \u2013 Sphere illuminated by a point source
Figure CC.2 \u2013 Illumination model \u2013 Sphere illuminated by a half-Ulbricht sphere <\/td>\n<\/tr>\n\n 60<\/td>\n CC.2 Brightness of a surface element
Figure CC.3 \u2013 Brightness of a surface element of a sphere in spherical coordinates
Figure CC.4 \u2013 Brightness distribution in an image of a sphere <\/td>\n<\/tr>\n\n 61<\/td>\n Figure CC.5 \u2013 Grey value profile over a sphere with low contrast for a typical imaging contrast (Modulation Transfer Function)
Figure CC.6 \u2013 Grey value profile over a sphere with the same colour as the background <\/td>\n<\/tr>\n\n 62<\/td>\n Figure CC.7 \u2013 Grey value profile over a sphere in front of a background that is half as bright
Figure CC.8 \u2013 Grey value profile over a sphere in front of a background that is twice as bright <\/td>\n<\/tr>\n\n 63<\/td>\n Figure CC.9 \u2013 Grey value profile over a sphere by low contrast
Figure CC.10 \u2013 Grey value profile over the sphere from Figure CC.9 but with the direction to the imaging device changed by 10\u00b0 <\/td>\n<\/tr>\n\n 64<\/td>\n Figure CC.11 \u2013 Grey value profile over a small sphere that results inan image that is 5 pixels in diameter <\/td>\n<\/tr>\n \n 65<\/td>\n Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" \n\n
\n Published By<\/td>\n Publication Date<\/td>\n Number of Pages<\/td>\n<\/tr>\n \n BSI<\/b><\/a><\/td>\n 2015<\/td>\n 68<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":430739,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[552,2641],"product_tag":[],"class_list":{"0":"post-430733","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-29-260-99","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/430733","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/430739"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=430733"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=430733"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=430733"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}