基于LabVIEW的浓密膏体管道流速数据采集系统  

Data Acquisition System of Thick Pastes Flow Rate Apparatus Based on LabVIEW

作　　者：张霜玉[1,2] 杨华旭[2] 贾旋凯[2] 吉晓冬[2] 吴淼[2] 

机构地区：[1]天地科技股份有限公司国内成套装备部,北京100013 [2]中国矿业大学(北京)机电与信息工程学院,北京100083

出　　处：《测控技术》2015年第5期96-99,共4页Measurement & Control Technology

基　　金：国家自然科学基金资助项目(51075389)

摘　　要：浓密膏体具有黏度大、颗粒细、电导率低、输送流速慢等特点,因此对其管道流速的测量难以应用市场中现有的各种流量计。迫于工程实践和实验研究的需要,自主研发了一种浓密膏体管道流速测量装置。基于计算机虚拟仪器技术和LabVIEW图形化编程软件平台,开发了一套数据采集系统,帮助实现自动化在线测量。该系统硬件由数据采集卡、端口接线板和计算机组成,软件由数据采集、回放和计算3个模块组成。对煤泥多流速的多次测量结果证明其达到了设计要求,测量范围在0.1~0.9m/s的线性度和重复性都小于1.5%,静态特性良好。As thick pastes are viscosity, fine-grain-size, low-conductivity, and slow-flow-rate, there isn＇t a suitable flowmeter in the market for the pipe flow rate measurement of the thick pastes. Considering the requirements in engineering projects and experimental studies, a new flow rate measurement apparatus of thick pastes is researched and manufactured. A data acquisition system is developed to help to measure automatically on line based on the computer virtual instrument technology and LabVIEW graphics programming software platform, whose hardware is composed of a data acquisition card, a terminal board and a computer, and software is composed of a data acquisition module, a playback module and a calculation one. The results of the pipe flow rate acquisition experiment proves that the system meets the design qualification. Moreover, both linearity and repeatability are less than 1.5% when the velocity measurement range within 0.1 - 0.9 m/s, which signs a good static performance.

关 键 词：数据采集 虚拟仪器 浓密膏体 流速 管道 

分 类 号：TH89[机械工程—仪器科学与技术]