IEC TS 61496-4-3:20 22作为IEC TS 61496-4-3:20 22 RLV提供，其中包含国际标准及其红线版本，显示了与上一版本相比技术内容的所有变化。IEC TS 61496-4-3:20 22规定了非接触式电敏防护设备(ESPE)的设计、构造和测试要求，该设备专门设计用于检测作为安全相关系统一部分的人员或人员部位，采用基于视觉的防护设备(VBPD)，使用立体视觉技术(VBPDST)实现传感功能。特别注意确保实现适当的安全相关性能的特征。ESPE可以包括可选的安全相关功能，其要求在IEC 61496-1的附录A中给出:2020年和本文件。如果本文件不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那些方面，也可以另外使用IEC TS 62998-1的规定。本文件没有规定检测区的尺寸或配置及其与任何特定应用的危险部件的关系，也没有规定任何机器的危险状态。它仅限于ESPE的功能及其与机器的接口方式。检测原理基于对来自不同视点（立体视图）的图像的评估，以确定距离信息。该距离信息用于确定对象的位置。 -本文档限于基于视觉的ESPEs，其具有使用固定焦距的光轴的固定距离(立体基础)和固定方向。-它仅限于不需要人为干预进行检测的基于视觉的ESPEs。 -其限于检测进入或存在于检测区中的物体的基于视觉的ESPE。 -其限于采用波长在400nm至1500nm范围内的辐射的VBPDST。 -本文档不涉及对检测到的物体进行复杂分类或区分所需的那些方面。 -本文件不考虑移动ESPE装置的各个方面。 其他要求和测试可适用于以下情况: -使用多光谱（彩色）技术； -不同于图2和图3所示的设置(例如，改变背景、光轴相对于地板的水平取向)； -适用于户外应用。本文件适用于规定检测能力高达200 mm的VBPDST。本文件可以与除了用于保护人或人的部分如手臂或手指(在14mm至200mm的范围内)之外的应用相关，例如保护机器或产品免受机械损坏。在这些应用中，例如当要由感测功能识别的材料具有与人的特性不同的特性时，可能需要额外的要求。本文档不涉及EMC排放要求。 IEC TS 61496-4-3:20 22取消并取代2015-05年发布的第一版。本版构成技术修订版。与上一版相比，此版本包括以下技术变更: a）一些要求条款和测试程序已被调整或删除，因为它们已合并到IEC 61496-1:20 20中（例如5.4.6.2光源或条款A.9）。

IEC TS 61496-4-3:2022 is available as IEC TS 61496-4-3:2022 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the 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).