基于LabVIEW的3146A多功能测量系统开发  

Development of 3146A Multi-function Measurement System Based on LabVIEW

作　　者：张凯宇[1] 范艾杰 蔡志明[1] 赵茂章 顾大伟[1] 

机构地区：[1]南京工业大学应用物理系

出　　处：《实验室研究与探索》2016年第1期121-124,共4页Research and Exploration In Laboratory

基　　金：江苏省大学生创新创业训练计划项目

摘　　要：设计了一套基于虚拟仪器软件LabVIEW的ESCORT-3146A台式数字万用表多功能测量系统。该系统中3146A台式数字万用表与计算机的通讯功能是利用LabVIEW中的串口通讯函数与子VI进行开发的,采用USB串口线实现计算机USB端口与3146A台式数字万用表RS232端口的物理连接。在集成3146A台式数字万用表前面板测量功能的基础上,测量系统增加了图形化显示测量数据,采样周期自由设定,海量数据存储等功能。利用3146A台式数字万用表四线制测量电阻的功能,该测量系统还可以配合PT100进行精密测温,测量范围为0~200℃,测温精度达到0.023℃。By using the virtual instrument software LabVIEW,a multi-functional measurment system was designed based on ESCORT-3146 A bench-type digital multimeter（ DMM）. The function of communication between PC and 3146 A DMM was achieved by LabVIEW＇s serial communication functions and sub VI. Physical connections between USB port of PC and RS232 port of 3146 A DMM were realized with USB serial port line. On the basis of the integration of the front panel measuring functions of 3146 A DMM,the additional functions were added to the measurement system,such as graphical displaying of measurement data,sampling period setting,massive data storage. Using the four-wire method of resistance measurement,this measurement system could coordinate with PT100 for precise temperature measurement,with measurement range of 0-200℃ and temperature measurement precision reached 0. 023℃.

关 键 词：台式数字万用表 LABVIEW 串口通讯 精密测温 

分 类 号：TM932[电气工程—电力电子与电力传动] TP274.2[自动化与计算机技术—检测技术与自动化装置]