多通道苏玛罐VOCs采样控制器的设计

Design of VOCs Sampling Controller for Multi-channel Suma Tank

设计了一套以STM32F429为控制核心、以工业串口屏为人机操控界面、以质量流量控制器作为流量控制单元、以步进电机驱动气体分配阀为执行机构的多通道苏玛罐VOCs采样控制器。详细给出了该控制器的结构设计方案、控制系统原理和软件工作流程。利用STM32F429+工业串口屏构成的操控核心实现质量流量控制器和步进电机的控制,保证了控制器的采样精度,实现了多路采样通道之间的精准切换。该控制器结构紧凑、气路结构简单、可扩展性强、运行稳定,具有良好的应用前景。

A multi-channel Suma tank VOCs sampling controller was designed with STM32F429 as the control core,industrial serial port screen as the man-machine interface,mass flow controller as the flow control unit and stepper motor driven gas distribution valve as the actuator.The structure design scheme,control system principle and software workflow of the controller are given in detail.The control core of STM32F429+industrial serial port screen is used to realize the control of mass flow controller and stepper motor,which ensures the sampling accuracy of the controller and realizes the precise switching between multiple sampling channels.The controller has compact structure,simple gas path structure,strong expansibility and stable operation,and has good application prospect.