基于LabVIEW的混凝土工作性测控系统数据采集处理

由于外加剂种类和数量日益增多，混凝土工作性经时差别很大，传统工作性测试方法无法满足现代工程技术要求，故设计了一种智能型新拌混凝土现场流变参数测控设备。简述了自主研制的新拌混凝土工作性测控系统中流变参数基本计算公式及采集数据误差产生的原因；论述了流变数据复演性分析时，在LabVIEW中对传感器进行数据采集并进行低通滤波处理和利用拉伊达准则剔除异常误差。结果表明，两种方式结合起来对采集的数据处理有效，并使得流变参数测试计算结果更加准确可靠。

Data acquisition and processing of concrete workability detection system based on LabVIEW

Due to the increasing number and quantity of admixtures and the working performance of concrete varing greatly over time, the traditional working test method can not meet the requirements of modern engineering technology. Therefore, a kind of intelligent new concrete concrete rheological parameter measurement and control equipment is designed.This paper introduces the basic calculation formula of rheological parameters and the causes of errors in collected data in the measure and controller of concrete workability; When the rheological data is analyzed,the data is collected and low pass filter processed and the Pauta, criterion is used to eliminate the error in LabVIEW.The results show that Combining two methods is effective to deal with the collected data and make the results of the rheological parameters test more accurate and reliable.