8路高精度计量秤仪表数据采集温漂性能的研究  

Research on the Temperature Drift of Data Acquisition for 8-channel Belt Measurement Scale with High-accuracy

作　　者：杜永[1] 张赤斌[1] 杨细龙[1] 

机构地区：[1]东南大学机械工程学院,江苏南京210096

出　　处：《仪表技术》2010年第1期36-38,共3页Instrumentation Technology

摘　　要：介绍8路高精度计量秤仪表数据采集过程中的温度漂移性能的研究。简单介绍了计量秤的原理和高速高精度ADC芯片AD7190的性能指标;重点介绍了8路仪表运放AD8231的温漂性能,并分析了AD8231温度漂移试验数据;最后介绍了温度传感器DS1820的使用。文章提出了一种软件滤波的方法来克服DS1820在温度采集过程中数据异常的问题。The research on the temperature drift of data acquisition for 8-Channel belt measurement scale with highaccuracy is given in detail in this paper. The principle of the measurement scale and the performance of the high-speed and high-accuracy ADC chip AD7190 are briefly introduced. The temperature drift performance of the Instrumentation Amplifier AD8231 is emphasized and the test data from the AD8231 temperature drift are analyzed. Finally, the useage of the DS1820 temperature sensor is introduced. To overcome the problem of the abnormal data from DS1820 in the process of collecting temperature, a method of software filtering is presented in this paper.

关 键 词：皮带计量秤 称重原理 AD7190 AD8231 DS1820 

分 类 号：TP216[自动化与计算机技术—检测技术与自动化装置]