基于STM32的核电厂数字限值报警器设计  

Design of digital limit alarm instrument based on STM32for nuclear power plant

作　　者：肖习鹏[1] 龚建军[1] 尹小龙[1] 何力[1] Xiao Xipeng;Gong Jianjun;Yin Xiaolong;He Li(Nuclear Power Institute of China, Chengdu 610041, China)

机构地区：[1]中国核动力研究设计院

出　　处：《电子测量技术》2018年第5期64-67,共4页Electronic Measurement Technology

摘　　要：在二代压水堆核电厂空调通风系统中,模拟限值报警器对温度等参数进行监测、控制和超限报警,但其存在精度差和调校复杂的缺点。在不改变模拟限值报警器电气接口的前提下,设计了一种以＂前端输入调理模块＋STM32＋输出通道模块＂架构为核心的数字限值报警器电路。利用STM32自带的多通道模数转换器对前端多路传感器信号采样和处理,实现对温度等参数的监测、控制、报警和实时显示。试验结果表明,数字化限值报警器可以稳定可靠的报警动作和参数显示,可以实现对模拟限值报警器的替代升级。In the air conditioning and ventilation system of the second generation PWR Nuclear Power Plant,the temperature and other parameters are monitored,controlled and over-limit alarmed by the analog limit alarm instrument,but it has the disadvantages of poor precision and complicated adjustment.Without changing the electrical interface of the analog limit alarm instrument,we design a digital limit alarm circuit based on ＂front-end conditioning module＋STM32＋output channel module＂architecture,The multi-channel analog to digital converter of STM32 is used to sample and process the front-end sensor signals,so the temperature and other parameters can be monitored,controlled,alarmed and displayed in real-time.The experimental results show that the digital instrument can stably and reliably over-limit alarm and parameters display,it can completely replace and upgrade the analog limit alarm instrument.

关 键 词：多通道数据采样 温度显示 参数预设 限值报警 

分 类 号：TP277[自动化与计算机技术—检测技术与自动化装置]