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提出了一套冷冻干燥生产过程自动控制系统的实现方案 ,该方案由上位计算机、PLC和单片机小系统组成。并对该系统各组成部分的功能和下位机控制软件设计作了详细介绍。
A set of scheme of automatic control system for freeze-drying production process was proposed. The scheme consisted of a host computer, a PLC and a single-chip microcomputer system. The functions of each component of the system and the design of the control software of the lower computer are introduced in detail.