一种基于MCU诊断的STO功能电路在电梯控制系统中的应用  

Application of a STO Functional Circuit Based on MCU Diagnosis in Elevator Control System

作　　者：江舟 吴鑫 李海[2] JIANG Zhou;WU Xin;LI Hai

机构地区：[1]成都市特种设备检验检测研究院 [2]中国测试技术研究院

出　　处：《计量与测试技术》2024年第5期89-92,共4页Metrology & Measurement Technique

摘　　要：传统的电梯控制系统具有控制柜体积大、布线复杂、接触器易磨损等缺点。本文依据GB/T 12668.502-2013国家标准要求,设计了一种具有故障诊断功能的双通道架构的STO功能电路,并将其应用于电梯控制系统。实验证明:该功能电路安全完整性等级为SIL3,硬件故障裕度为1,满足GB/T 7588.1-2020国家标准对电梯控制系统的要求。The traditional elevator control system has some disadvantages such as large volume of control cabinet, complex wiring and easy wear of contactor.According to GB/T 12668.502-2013 national standard, a two-channel STO circuit with fault diagnosis function is designed and applied to elevator control system.The experiment shows that the safety integrity level of the functional circuit is SIL3 and the hardware fault margin is 1, which meets the requirements of GB/T 7588.1-2020 national standard for elevator control system.

关 键 词：安全完整性等级(SIL) 硬件故障裕度(HFT) 故障诊断 安全扭矩取消(STO) 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] TU857[自动化与计算机技术—控制科学与工程]