针对气-固浓相分选流化床排料机构故障率高、次生破坏大、维修困难等问题,分析了排料机构的现场控制要求,设计了基于PLC的自动测量监控系统。详细阐述了该测控系统的工作原理、硬件设计、软件设计和抗干扰设计,给出了PLC的选型、内存设置和地址分配方案,并给出了系统结构、工作流程和编程流程。 In view of the problems of high failure rate, large secondary damage and difficulty of maintenance in gas-solid dense phase separation fluidized bed discharge mechanism, the on-site control requirements of the discharge mechanism were analyzed and an automatic measurement monitoring system based on PLC was designed. The working principle, hardware design, software design and anti-jamming design of the system are described in detail. The PLC selection, memory setting and address allocation are given. The system structure, work flow and programming flow are given.