摘 要本组课题是对液体自动混合装置的模拟控制,实现液体混合装置的自动添加液体、自动混合等自动控制功能。在本设计的梯形图设计中是大量运用计时器和顺序控制继电器指令来完成的。在 PLC 程序设计的基础上结合有关的外围设备形成一个易于工业控制的系统整体,在易于扩展其功能的原则而设计.本监控系统采纳 PLC 为控制核心,具备自动混合两种液体的功能, 由传感器检测储藏罐中的液面高度,按顺序加入 A 和 B 两种液体,搅拌 40s 后放出混合液体.过程监控上,我们采纳的是 MCGS 组态软件,这是我国自主研发的组态软件,适用于各品牌的PLC。在课程设计中主要进行的是设备的基本机构图,混合装置控制的模拟实验面板图,PLC 的选型,外部硬件接线图,以及绘制所要实现的功能图,进而在 GX_Developer 与 GX。Simulator中仿真调试,输出对应的指令表;在 MCGS 中设计监控的人机界面,对于储藏罐以及传感器和电磁阀和流动块的属性设置,同时绘制历史报表,最后将 PLC 中的程序同步到 MCGS 中,进行仿真调试,实现界面的实时监控,以及历史数据和曲线的实时监测。关键词: 液体自动混合,可编程控制器 PLC,MCGS 组态软件AbstractThis topic is for liquid automatically mixing device simulation control ,the fulfilling liquid mixing device automatically add liquid , automatic mixing automatic control function.In this design ladder diagram design is application of a timer and sequence control relay instructions to finish. On the basis of the PLC program design combined with related peripheral devices formed an easy to industrial control of the whole system , easy to expand its function in the principle of design 。 The monitor system adopts PLC as control core , with automatic mixing two liquids function by the tanks sensor test highly liquid surface, in order to join A and B two liquids , stirring 3min after release mixture liquid. Process monitoring, we use is MCGS software,this is our country self-developed configuration software,applicable to the brand of PLC. In the course design of main...