1、 摘摘 要要 随着计算机技术与测量仪器技术的结合，促使了一种新的测量仪器虚拟仪器 的出现。虚拟仪器是一种功能意义上的仪器，由个人计算机、仪器硬件及应用软件 组成。其基本工作原理是:先通过仪器硬件采集信号，然后通过软件编程来实现数据 的显示及测量等功能。随着网络通信技术的发展，网络化虚拟仪器也应运而生，它 是将虚拟仪器技术与网络通信技术相结合，从而实现网络化测量。 本课题利用虚拟仪器开发平台Lab VIEW 和NI公司的数据采集卡设计了虚拟任 意波形发生器和虚拟示波器。虚拟任意波形发生器能够实现任意波形载入、增益控 制、直流偏置调节、滤波器状态设置等功能。虚拟示波器不但具有传统示波器的波 形显示
2、控制功能，而且还对传统示波器的功能进行了扩展，实现了参数自动测量显 示、波形存储和频率响应分析等功能。 最后，本文总结并以实例说明了 Lab VIEW 实现网络通信的几种方法:TCP 或 UDP 通信、Data Socket, Web Server 及远程面板技术等。 关键词:虚拟仪器，Lab VIEW，任意波形发生器，示波器，Data Socket Abstract The combination of computer technology and measure technology make a kind of new measure instrument-virtual instru
3、ments. Virtual instruments is a kind of instruments of functional meaning, it is composed of personal computer, hardware and applied software. The basic principle is the hardware acquires singles, then using the software to realize data displaying and measurement. Along with the development of commu
4、nication and network technology, the networked virtual instruments appeared. Networked virtual instruments implement networked measurement, which is the outcome of virtual instruments integrate with network communication technology. Based on the software Lab VIEW of virtual instrument and data acquisition card of NI, the virtual arbitrary waveform generator and virtual oscilloscope are designed in this thesis. The virtual arbitrary waveform generator has such functions as arbitra
