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采用可编程控制器(PLC)实现4层4站电梯的使用功能:集选、消防和检修。由于电梯是一个大型复杂设备,为了简化电梯控制程序的设计,采用级式程序设计的新方法。根据电梯的运行方式在初始级设计了3个模块:集选、消防备检修。在各个模块下,按照电梯运行动作进一步分级,程序的级与动作相对应。另外,为了提高控制系统对消防联动和厅外召唤信号的响应速度,采用中断技术对这两种信号进行处理。研究表明,级式程序设计方法简化了程序,缩短了执行时间,容易编制和维护。级式程序和中断技术结合的方法有效地解决了顺序控制中随机信号的处理问题,具有一定的工程应用价值。
The use of programmable logic controller (PLC) to achieve four-storey 4-station elevator use: set election, fire and maintenance. Because the elevator is a large and complex equipment, in order to simplify the design of the elevator control program, a new method of level programming is adopted. According to the operation of the elevator in the initial design of the three modules: set election, fire inspection equipment maintenance. In each module, in accordance with the operation of the elevator further classification, the level of the program corresponds to the action. In addition, in order to improve the response speed of the control system to the fire linkage and the hall call signal, the two signals are processed by the interrupt technology. Research shows that the hierarchical programming approach simplifies the process, shortens execution time, and is easy to program and maintain. The combination of the level program and the interrupt technology effectively solves the problem of random signal processing in the sequence control and has certain engineering application value.