机械安全.电敏感防护设备.第4-3部分:使用基于视觉的防护装置（VBPD）的设备的特殊要求.使用立体视觉技术（VBPDST）的附加要求

[中文适用范围]： 本文件规定了非接触式电敏感保护设备(ESPE)的设计、构造和测试要求，这些设备专门用于检测人员或人员部位作为安全相关系统的一部分，采用基于视觉的保护设备(VBPD)使用立体视觉技术(VBPDST)进行传感功能。特别关注确保实现适当安全相关性能的特性。ESPE可以包含可选的安全相关功能，其要求见IEC 61496-1:2012/2020的附录A和本文件。 注意："非接触"意味着不需要物理接触进行传感。 如果本文件未包含所有必要的规定，则适用IEC TS 62998-1。 对于本文件中未考虑的方面，也可以补充使用IEC TS 62998-1的规定。 本文件不规定检测区域的尺寸或配置及其相对于任何特定应用中危险部分的位置，也不规定任何机器的危险状态构成。它仅限于ESPE的功能及其与机器的接口。 检测原理基于从不同视角(立体视觉)评估图像以确定距离信息。此距离信息用于确定对象的位置。 - 本文件仅限于基于视觉的ESPE，具有固定距离(立体基线)和固定方向，在制造过程中使用固定焦距固定光学轴之间的不同成像设备。 - 它仅限于基于视觉的ESPE，从传感设备到检测区域的最小距离为立体基线的4倍。 - 它仅限于基于视觉的ESPE，可以检测图像平面中至少5像素直径的物体。 - 它仅限于基于视觉的ESPE，不需要人工干预进行检测。 - 它仅限于基于视觉的ESPE，检测进入或存在于检测区域中的物体。 - 它仅限于采用波长在400纳米至1500纳米范围内的辐射的VBPDST。 - 本文件不涉及检测对象的复杂分类或区分所需的那些方面。 - 本文件不考虑移动ESPE安装的方面。 在以下情况下可能适用额外的要求和测试： - 使用多光谱(彩色)技术； - 设置不同于图2和图3所示的设置(例如，变化的背景，光学轴相对于地板的水平方向)； - 用于户外应用。 本文件适用于检测能力高达200毫米的VBPDST。 本文件可能与保护人员或人员部位(如手臂或手指，范围14毫米至200毫米)以外的应用相关，例如保护机械或产品免受机械损坏。在这些应用中，可能需要额外的要求，例如当传感功能要识别的材料具有与人员不同的特性时。 本文件不涉及EMC发射要求。 [外文原描述]： IEC TS 61496-4-3:2022 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition. IEC TS 61496-4-3:2022 specifies requirements for the design, construction and testing of non-contact 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 can include optional safety-related functions, the requirements for which are given in Annex A of IEC 61496-1:2020 and this document. Where this document does not contain all necessary provisions, IEC TS 62998-1 applies. It is also possible, for those aspects not considered in this document, to use provisions from IEC TS 62998-1 additionally. This document 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. 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 position of an object(s). – This document is limited to vision based ESPEs with fixed distances (stereo base) and fixed directions of the optical axes using a fixed focal length. – It is limited to vision based ESPEs that do not require human intervention for detection. – It is limited to vision based ESPEs that detect objects entering into or being present in a detection zone(s). – It is limited to VBPDSTs employing radiation at wavelengths within the range 400 nm to 1 500 nm. – This document does not address those aspects required for complex classification or differentiation of the object detected. – This document does not consider the aspects of a moving ESPE installation. Additional requirements and tests can apply in the following cases: – Use of multi-spectral (colour) techniques; – Setups other than as shown in Figure 2 and Figure 3 (e.g. changing backgrounds, horizontal orientation of the optical axis with respect to the floor); – Intended for outdoor applications. This document is relevant for VBPDSTs having a stated detection capability up to 200 mm. This document can 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. This document does not deal with EMC emission requirements. IEC TS 61496-4-3:2022 cancels and replaces the first edition published in 2015-05. This edition constitutes a technical revision. This edition includes the following technical changes with respect to the previous edition: a) Some requirement clauses and test procedures have been adapted or removed because they have been consolidated in IEC 61496-1:2020 (e.g. 5.4.6.2 Light sources or Clause A.9).