基于LabVIEW的单回路液位控制系统的分析与设计

工业生产过程中对于被控对象液位监测通常是整个控制系统不可缺少的重要环节。本设计是基于GK0601实训平台，利用DAQ设备与单容水箱控制平台相连，用LabVIEW虚拟仪器编程设计控制界面，并可实时监视与调节系统液位，最终使控制目标液位保持动态稳定。硬件系统是由电磁阀、压力变送器、射流式自吸泵、数据采集卡USB6221、智能仪表NHR5330等设备构成；软件平台是基于LabVIEW搭建而成。通过实验调试与监测，整个系统结构合理、运行良好、程序优化、性能稳定、便于推广。

Analysis and design of single loop liquid level control system based on LabVIEW

In industrial processes, it is usually an important and indispensable part to the entire control system of the controlled object level monitoring. The design is based on LabVIEW virtual instrument programming, uses the DAQ equipment to connect with the single tank control platform, uses the LabVIEW virtual instrument programming to control interface, and can be monitoring and regulating system level at real time, ultimately can keep the target dynamic level stability. The hardware system is made up of electromagnetic valve, pressure transmitter, jet type self suction pump, data acquisition card USB6221, intelligent instrument NHR5330 and other equipment. The software platform is built to base on LabVIEW, through experiment debugging and monitoring, the entire system structure is reasonable, the operation is good, the procedure is optimized, the performance is stable and easy application.