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Delivery: <= 10 days. True-PDF full-copy in English will be manually translated and delivered via email. GBZ44938.1-2024: Electrical safety of machinery - Part 1: Safety-related sensors used for the protection of persons Status: Valid
Basic dataStandard ID: GB/Z 44938.1-2024 (GB/Z44938.1-2024)Description (Translated English): Electrical safety of machinery - Part 1: Safety-related sensors used for the protection of persons Sector / Industry: National Standard Classification of Chinese Standard: K09 Classification of International Standard: 29.020 Word Count Estimation: 78,758 Date of Issue: 2024-12-31 Date of Implementation: 2025-07-01 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GBZ44938.1-2024: Electrical safety of machinery - Part 1: Safety-related sensors used for the protection of persons---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order. GB /Z 44938.1-2024.Electrical safety of machinery Part 1.Sensors for protecting personnel Guiding technical documents of the People's Republic of China on national standardization ICS 29.020CCS K 09 Electrical safety of machinery Part 1.Electrical safety of machinery for the protection of Sensors for personnel safety Electrical safety of machinery-Part 1：Safety⁃related sensors used for the protection of persons (IEC TS 62998⁃1.2019, Safety of machinery-Safety⁃related sensors used for the protection of persons, IDT) 2024-12-31 Release 2025-07-01 Implementation State Administration for Market Regulation The National Standardization Administration issued Table of ContentsPreface...Ⅴ Introduction VI 1 Scope...1 2 Normative references ...1 3 Terms and Definitions 2 3.1 Features and Performance 3 3.2 Credibility 4 3.3 Negotiation of procedures and structure 5 3.4 System-related terms 7 3.5 Fusion 8 3.6 Security related information 8 3.7 Experiment 10 3.8 User Category 11 3.9 Verification and Validation 12 4 Life cycle and interrelationship with safety-related control systems (SCS) 13 4.1 General Principles 13 4.2 Hazard and Risk Analysis 15 4.3 Corresponding SRS/SRSS performance level 16 5 Design and development phase...17 5.1 General Principles 17 5.2 SRS/SRSS Function 17 5.3 Design Analysis 18 5.4 Simulation 18 5.5 Sensing Area 19 5.6 Safety-Related Areas 19 5.7 Automation related areas 19 5.8 Detection Capability and Reliability 19 5.9 User Interface 23 6 Integration and Installation Phase 25 6.1 General Principles 25 6.2 Fusion of SRS into an SRSS 26 6.3 User Calibration 29 7 Work, maintenance and modification phases 30 8 Verification and Validation 30 8.1 General requirements 30 8.2 Verification of SRS/SRSS 30 8.3 Confirmation of SRS/SRSS 31 8.4 Analysis 32 8.5 Experiment 33 9 Instructions for use 35 Appendix A (Informative) System Performance Check 37 Appendix B (Informative) User Category ...38 B.1 SRS/SRSS user categories and user categories covered by this document 38 B.2 User categories involved in integration 38 Appendix C (Informative) Functional Decomposition and/or Integration 41 Appendix D (Normative) Generation and application of simulation models 43 D.1 Overview 43 D.2 Recommendations for use 43 D.3 Simulation goals and implementation measures 43 D.4 Verification 44 Appendix E (Informative) Children's attributes and behaviors 46 E.1 Overview 46 E.2 Body Part Dimensions 46 Appendix F (Informative) Environmental Impact ...50 F.1 Overview 50 F.2 Environmental Impact Application Example 1...50 F.3 Environmental Impact Application Example 2 ...51 Appendix G (Informative) Faults, failures and effects leading to loss of SRS/SRSS safety-related functions 53 G.1 Overview 53 G.2 Dangerous Failure 55 G.3 Normal Operation 56 G.4 Signals for triggering fault response functions and confidence information as part of safety-related information 56 Appendix H (Informative) Test Factors 58 H.1 Overview 58 H.2 Mechanical impact test 58 Appendix I (Informative) Functionality, safety-related information and examples of integration 61 I.1 Functional Example 61 I.2 Examples of safety-related information 61 I.3 Fusion Example 63 References 66 Figure 1 Measurement accuracy and measurement uncertainty...4 Figure 2 SRS structure example 1...13 Figure 3 SRS structure example 2...14 Figure 4 SRSS structure example ...14 Figure 5 SRS/SRSS Hazard and Risk Analysis Process 15 Figure 6 SRS/SRSS safety related information ...24 Figure A.1 Example of checking system performance using safety-related sensor standards 37 Figure C.1 Interrelationships between functions and objects 41 Figure C.2 Example of functions implemented in SRSS 42 Figure D.1 Verification Process 45 Figure E.1 Children's height 47 Figure E.2 Chest depth in children 47 Figure E.3 Width of children's head 48 Figure E.4 Children's head length 49 Figure G.1 Faults, failures or combinations of errors that may result in additional risk due to loss or bypass of safety functions 53 Figure G.2 Analysis of systemic capabilities to prevent systemic failures due to dangerous failures during the design and development phase 54 Figure G.3 Response to systematic failures that lead to failure response functions 56 Figure G.4 Response to errors that generate relevant confidence information 56 Figure I.1 Example of SRS application at road intersections 61 Figure I.2 Example of SRS/SRSS providing decision and confidence information 62 Figure I.3 Example of SRS/SRSS providing measurement and confidence information 62 Figure I.4 First example of fusing two SRS into one SRSS to produce a combined sensing area 63 Figure I.5 Integration of SRS safety-related information 64 Figure I.6 Verification and confirmation method based on SRS instructions and SRSS safety requirements specification ...64 Figure I.7 A second example of fusing two SRSs into one SRSS to produce a combined sensing area 65 Table 1 Correspondence between the required minimum SRS/SRSS performance level and safety performance level ...16 Table 2 SRS/SRSS functions (where appropriate) 18 Table 3 Standards containing environmental requirements 21 Table 4 Limits of dangerous failure (loss of detection capability) due to environmental interference in high demand mode 22 Table 5 Minimum inclusion probability/decision probability required under high requirement rate conditions ...25 Table 6 The maximum performance level of SRSS applicable after the fusion of two SRSs ...28 Table 7 Methods used to evaluate verification measures and verification results ...31 Table 8 Overview of instructions for use that need to be provided ...36 Table B.1 Roles and tasks of various user categories 38 Table B.2 User categories involved by different types of integration (using detection units, SRS/SRSS elements or SRS subsystems) 39 Table D.1 Simulation objectives and measures for low-complexity SRS/SRSS 43 Table D.2 Simulation objectives and measures for high-complexity SRS/SRSS 44 Table E.1 Children's height 46 Table E.2 Children's chest depth 47 Table E.3 Children's head width 48 Table E.4 Children's head length 48 Table F.1 Environmental impacts and levels according to IEC 60721-3-5 Example 1...50 Table F.2 Example of environmental impacts and levels in accordance with IEC 60721-3-3 2...52 Table G.1 Table G.2 Requirement rates used in numerical calculations 55 Table G.2 Limits of dangerous failures (loss of detection capability) caused by environmental influences under high demand rate conditions ...55 Table H.1 Test plan and test result examples for mechanical impact tests 59ForewordThis document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting is required. This document is Part 1 of GB /Z 44938 "Electrical Safety of Machinery". GB /Z 44938 has published the following parts. -- Part 1.Sensors for protecting personnel safety; --Part 2.Application examples of sensors for protecting personnel safety. This document is equivalent to IEC TS 62998-1.2019 "Safety of machinery - Sensors for protecting personnel". File type. The IEC technical specifications have been adjusted to become my country's national standardization guiding technical documents. The following minimal editorial changes were made to this document. --To coordinate with the existing standards, the name of the standard is changed to "Electrical safety of machinery Part 1.Transmissions for protection of personnel safety" Sensors --Appendix E adds notes to supplement the information on Chinese children's attributes and behavior measurement data. Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed by the China Machinery Industry Federation. This document is under the jurisdiction of the National Technical Committee for Standardization of Industrial Machinery Electrical Systems (SAC/TC 231). This document was drafted by. Beijing Machine Tool Research Institute Co., Ltd., Xi'an Jiaotong University, China University of Petroleum (Beijing), Xiamen Xiabo Electronics Technology Co., Ltd., Guangdong Topstar Technology Co., Ltd., Yonglin Electronics Co., Ltd., Shanghai Changjiang Jizhi Sensing Technology Co., Ltd. Co., Ltd., Zhengzhou Coal Machinery Intelligent Working Face Technology Co., Ltd. The main drafters of this document are. Xue Ruijuan, Wang Jinjiang, Wu Zhai, Zhang Ying, Lin Qijing, Huang Zuguang, Zhao Libo, Wu Yiran, Zhang Peisen, Gao Zhiguo, Wang Chuting, Luo Guoxi, Li Shiwen, Liang Zhenfeng, Lin Qicheng, Xue Wenfeng, and Zhang Wenqi.IntroductionSafety-related sensors are mainly used in mechanical equipment where there is a risk of personal injury. Safety-related sensors enable machines to Return to a safe state before a dangerous situation occurs, thereby protecting personnel. Currently, the sensor industry mainly uses general functional safety standards IEC 61508 series of standards, or the specific field of machinery standards IEC 62061 and ISO 13849 series of standards as safety-related products However, these standards do not provide guidance on how to avoid design failure or failure to detect specified objects under specific environmental conditions. Insufficient guidance may lead to unacceptable risks to personnel. GB /Z 44938 defines the functional safety of sensors or sensor systems and specifies It specifies the requirements for the systematic development and integration of sensors and sensor systems, and fills the gap between specific sensor design standards and electrical and electronic components. GB /Z 44938 is proposed to fill the gap in systematic capability verification between the general functional safety standards for electronic and programmable electronic control systems. It consists of 3 parts. --Part 1.Sensors for protecting personnel safety. The purpose is to improve the safety level of mechanical and electrical equipment in my country and ensure The personal safety of relevant practitioners, guide the design, manufacture, production and use of sensors that protect personnel safety, and standardize the Functional, safety and test requirements of sensors that protect personnel safety. -- Part 2.Application examples of sensors for protecting personnel. The purpose is to provide guidance and applications for using Part 1. Example. --Part 3.Sensor Technology and Algorithms. The purpose is to provide guidance on how to properly implement algorithms to prevent people from suffering intolerable risk. GB /Z 44938 can improve the functional safety level of sensors or sensor systems and provide a reference for safety-related sensor manufacturers and safety-related sensor manufacturers. Provide guidance to sensor system integrators. Electrical safety of machinery Part 1.Electrical safety of machinery for protecting Sensors for personnel safety1 ScopeThis document specifies safety-related sensors (SRS) and safety-related sensors used to protect personnel safety with regard to system performance. System (SRSS) requirements in development and integration. This document applies only under the following conditions. --Use sensors to protect personnel; and -- Functional safety standards for electrical control systems that consider sensors as subsystems or subsystem elements; and --Product-specific sensor standards (such as IEC 61496 (all parts) and IEC 60947-5-2) do not contain essential provisions or specific The sensor standard for certain products has not yet been released. Examples of systematic capability verification using various safety-related sensor standards are given in Appendix A. All requirements and research methods in this document are limited to achieving personal protection through the following means. --Detection of potentially dangerous objects; --Detecting the entry of human bodies, human body parts and human-related objects into dangerous areas; or --Identify the differences between these parts and other objects. Note 1.The use of SRS/SRSS in public places requires not only the detection of the person, but also the detection of the equipment associated with the person, such as wheelchairs, crutches and infusions. Rack, etc. The performance levels of sensors and sensor systems refer to existing functional safety standards (such as IEC 62061, IEC 61508 (all parts) and definitions in ISO 13849 (all parts). NOTE 2.For simplicity and to avoid misuse, this document does not provide type definitions or linkages as in IEC 61496-1. Safety Integrity Level (SIL) or SIL requirement limit (subsystem) (SILcl) to simplify the use process for the end user. Special attention should be paid to the test function and the reliability of the test capability. Environmental impact and indoor and outdoor application tests are defined and will affect the Credibility of detection functions and detection capabilities. Note 3.Environmental impacts and their classification and test procedures mainly refer to the requirements of general environmental standards. Only in the absence of relevant standards, more specific requirements will be provided. Requirements and tests for the body. This document is also applicable to personnel protection applications in other industries, such as agriculture or in public places such as subway stations. Unlike IEC 61508-2, this document does not consider or address actual application requirements (such as processes or components, etc.).2 Normative referencesThe contents of the following documents constitute the essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. GB 28526-2012 Electrical safety of machinery Functional safety of safety-related electrical, electronic and programmable electronic control systems (IEC 62061.2005, IDT) ISO 7250 (all parts) Basic human body measurements for techno- logical design ISO 13849 (all parts) Safety of machinery-Safety-related parts of control systems ...... |
