基于Labview与容栅传感器的液位测控系统  

Liquid Level Measurement and Control System Based on LabVIEW and Capacitive Sensor

作　　者：韩剑[1] 莫德清[2] 李长俊[1] 

机构地区：[1]桂林电子科技大学信息科技学院,广西桂林541004 [2]桂林电子科技大学生命与环境科学学院,广西桂林541004

出　　处：《计算机测量与控制》2015年第2期394-396,共3页Computer Measurement &Control

基　　金：桂林市科学研究与技术开发计划项目(20130116-3);广西高校研究项目(YB2014136)

摘　　要：为了实现液位测控中对精度要求高的需求,提出了一种基于容栅传感器和LabVIEW的液位精密测控系统,利用容栅传感器输出的电容信号经信号调理模块输入MSP430单片机处理,并通过PID算法精密控制液位,采用LabVIEW设计系统监控界面程序,实现系统数据的显示、存储、绘图以及人机控制等功能;通过测试数据表明该液位测控系统测量精度高,精度达0.05ml,操作简单;该系统还可配装为数显测定仪和物体密度测量仪,人机界面良好,成本低,易推广。In order to realize the demand for high precision in liquid level measurement,this paper puts forward a kind of liquid level precision measurement and control system based on grating sensor and LabVIEW.The system can realize data display,storage,drawing,and the man-machine control,etc.by using capacitance signal from grating sensor processed by signal conditioning module into MSP430 single chip,controlling precisely the liquid level through PID algorithm,and monitoring interface program by LabVIEW design system.The testing dada show that the liquid level measurement and control system,with simple operation,has high measurement precision of 0.05 mL.The system can also be equipped with digital display meter and object density measuring instrument,with the advantages of good man-machine interface,low cost,and easy promotion.

关 键 词：容栅传感器 虚拟仪器 液位测控 PID 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]