GPIB仪器控制技术文件.ppt

Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,*,/,GE /,*,GPIB仪器控制技术文件,仪器的发展历史,VXI Chassis,DAQ Boards,with RTSI,Fully Programmable System,GUI,IEEE 488 Rack and Stack System,Analog Instrumentation,Virtual Instrumentation,Road Map,GPIB,Serial,DAQ,Process,or,Unit Under Test,VXI,Image Acquisition,Motion,Control,PXI,Application,Software,Hardware&Driver Software,Measurement Studio,LabVIEW,IEEE 488,仪器控制标准,从 1975年就成为编程的标准,8位的并行协议,传输率低于1,Mbytes/s,标准电缆,最多控制14台仪器,有大量支持其标准的仪器,GPIB,控制的领先者,IEEE 488,厂商,Score,Hewlett-Packard,Company A,Company C,Company B,National Instruments,0,50,100,150,200,250,300,350,400,450,GPIB,通信实例,控制器,GPIB,Interface,DMM,GPIB Read,GPIB Write,F0R0S2,1.8524,GPIB,电缆,NI-488.2,总线接口软件,Interactive,Control,Program,IEEE 488.2,Devices,GPIB,接口,高速设备驱动程序,IEEE 488.2,子程序,NI-488,函数,调试和开发工具,动态和交互设置,SRQ,处理,IEEE 488.1,Devices,Configuration,Program,Interactive,Control,Program,Function,Library,NI-488.2,GPIB,实例,IBCONF,Demo,GPIB Board,NI GPIB Interfaces,Device Manager,Windows 98,System Registry,GPIB_32.DLL,LabVIEW GPIB Library VIs,You can change device,parameters using the Vis in,the LabVIEW GPIB Library,GPIB,实例,IBIC,Demo,仪器的驱动程序,1000多种仪器的驱动程序,60多个厂商的产品,提供源程序,减少开发时间,操作接口,I/O,接口,Instrument,Driver,功能接口,编程接口,利用,LabVIEW,进行频率响应的自动测量,滤波器的频率特性测量,db=20 log,10,V,o,/V,i,F,i,=F,l,*(F,h,/F,l,)(i/(N-1),Demo,函数发生器,DMM,自动测试与非自动测试的比较,测量次数,时间花费,仪器的图形用户界面设计,Demo,今天的仪器驱动程序,对仪器驱动程序的批评:,-增加系统开销(较慢),-结构不统一,-需要修改,其它要求:,-可以互换,-多线程,-可以进行模拟,IVI-,可互换的驱动程序优越性,降低维护和支持费用,减少系统 时间开销,部门之间共享代码,方便/快捷地对仪器编程,NI 4050 IVI Driver,Fluke 45 IVI Driver,Keithley 2001IVI Driver,仪器可互换性基本概念,测试程序,(,CVI,LabVIEW,VB,etc),IVI DMM Class Driver,五个基本的,Class Driver,示波器,oscilloscope,数字万用表,DMM,函数发生器,Function Generator,开关,Switch,电源,Power Supply,IVI,基金会成员,Boeing,GEC Marconi test systems*,GenRad,Lockheed martin,Lucent technologies*,Marconi north America*(formerly GDE systems),National instruments*,Northrop Grumman*,Raytheon TI systems*,*Founding members,Thank You!,