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GPIB 仪器控制技术

GPIB 仪器控制技术. Virtual Instrumentation. Fully Programmable System. VXI Chassis. GUI. IEEE 488 Rack and Stack System. DAQ Boards with RTSI. Analog Instrumentation. 仪器的发展历史. Road Map. Measurement Studio LabVIEW. Application Software. Hardware & Driver Software. GPIB. Serial. DAQ.

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GPIB 仪器控制技术

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  1. GPIB 仪器控制技术

  2. Virtual Instrumentation Fully Programmable System VXI Chassis GUI IEEE 488 Rack and Stack System DAQ Boards with RTSI Analog Instrumentation 仪器的发展历史

  3. Road Map • Measurement Studio • LabVIEW Application Software Hardware & Driver Software GPIB Serial DAQ VXI Image Acquisition Motion Control PXI Process or Unit Under Test

  4. 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

  5. GPIB控制的领先者 IEEE 488 厂商 National Instruments Hewlett-Packard Company A Company B Company C 0 50 100 150 200 250 300 350 400 450 Score

  6. GPIB 通信实例 GPIB Write "F0R0S2" GPIB 电缆 GPIB Interface DMM "1.8524" 控制器 GPIB Read

  7. NI-488.2 总线接口软件 • 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 NI-488.2 Interactive Control Program Configuration Program Interactive Control Program Function Library GPIB 接口 IEEE 488.2 Devices IEEE 488.1 Devices

  8. NI GPIB Interfaces Device Manager Windows 98 System Registry LabVIEW GPIB Library VIs GPIB_32.DLL GPIB Board You can change device parameters using the Vis in the LabVIEW GPIB Library Demo GPIB 实例 IBCONF

  9. Demo GPIB 实例 IBIC

  10. 仪器的驱动程序 操作接口 I/O 接口 • 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 Instrument Driver 功能接口 编程接口

  11. 利用LabVIEW进行频率响应的自动测量

  12. Demo 滤波器的频率特性测量 函数发生器 DMM db = 20 log10 Vo/Vi Fi=Fl*((Fh/Fl)^(i/(N-1)))

  13. 自动测试与非自动测试的比较 时间花费 测量次数

  14. Demo 仪器的图形用户界面设计

  15. 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

  16. 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

  17. 仪器可互换性基本概念 测试程序 (CVI, LabVIEW, VB, etc) IVI DMM Class Driver NI 4050 IVI Driver Fluke 45 IVI Driver Keithley 2001IVI Driver

  18. 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

  19. 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

  20. Thank You !

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