基于IEEE488.2的测量仪器控制系统的开发

数据采集是当今科学研究中一个重要手段,对数据进行准确有效的采集以及对采集的数据进行精确的计算就成为研究中关键的一环。由于通用接口总线（GPIB,General-Purpose Interface Bus）的简便易用性和稳定性,很多测量系统仍在使用GPIB的连接方式。为了简化编程,一种兼容的SCPI（Standard Commands for Programmable Instruments）虚拟仪器标准命令语言应运而生。基于兼容性及编程的简单和方便性,世界许多著名的仪器生产公司产品均支持SCPI。简要介绍了IEEE488.2标准,SCPI命令的语法及其使用方法,讨论如何使用该协议对智能控制系统的开发。采用Agilent公司的IO libraries套件中的VISA库实现对Agilent34401A数字万用表的远程控制,结果表明能满足测量系统的要求。

Control System Development of Measurement Instrument Based on IEEE488.2

Data collection is an important means in modern scientific research,thus the accurate and efficient collection of data and accurate computation of data has become a key part of the study.Owing to its simplicity and stability,many measurement systems are still using GPIB.To simplify programming,a standard of intelligent instruments compatible command language-standard commands for programmable instruments comes into being.On the basis of compatibility and programming simplicity as well as other conveniences,many products of the world famous instrument companies all support SCPI.This paper briefly describes the IEEE488.2 standard,SCPI command syntax and instructions for use,it also discusses how to apply the protocol to program control system of the intelligent instrument.Remote control on Agilent digital multimeter 34401A is accomplished by applying VISA library in Agilent’s IO libraries suite.The results show that the measuring system can meet the requirements.