基于labview虚拟信号发生器的设计.docVIP

毕业设计论文--基于labview虚拟信号发生器的设计 毕业设计论文 虚拟信号发生器的设计 摘要 虚拟仪器是将仪器技术计算机技术总线技术和软件技术紧密的融合在一起利用计算机强大的数字处理能力实现仪器的大部分功能打破了传统仪器的框架形成一种新的仪器模式 本设计采用USB6008数据采集卡将虚拟仪器技术用于信号发生器的设计该系统具有生成正弦波方波三角波锯齿波序列信号及任意波形的功能其序列信号发生器是在n位寄存器的基础上根据D触发器原理加上异或反馈电路构成的并且实现了存储波形和远程通信控制的功能本文首先介绍了信号发生器的相关理论给出了信号发生器的基本原理框图并了解了虚拟仪器的总线及其标准框架结构LABVIEW 开发平台在分析本系统功能需求的基础上介绍了数据采集卡LABVIEW 的编程模式等设计中所涉及到的硬件和技术 本设计是虚拟仪器模拟真实仪器的尝试实践证明虚拟仪器是一种优秀的解决方案能够实现各种硬件可以完成的任务 关键词虚拟仪器数据采集卡信号发生器LABVIEW The design of signal generator based on virtual instrument Abstract Virtual instrument is formed by the instrument technology computer technology bus technology and software technology Powerful digital processings ability of computer is used to achieve the main functions of instrument Virtual instrument broke the framework of the traditional instruments and built a new device model This design uses USB6008 data acquisition card The virtual instrument technology has been utilized in the design of signal generator The system has ability to produce sine wave square wave and triangle wave saw tooth wave sequence signals and arbitrary waveforms signals The series generators is on the basis of the n - bit registers and is under d trigger principle coupled with the exclusive or of feedback circuit And the waveform storage and remote communication control function has been realized This article introduces the theory of signal generator gives a basic block diagram of signal generator also the frame structure and LABVIEW development platform of the virtual instrument with the inquiry of the buss standard Based on the analysis of this systems functional requirements this article introduces the hardware and technology which involved in design of the data acquisition card and the LABVIEWs programming modes The design is an attempt of virtual instrument to simulate the reality instrument It shows the virtual instrument is an excellent solution to achieve the task which is achieved by traditional hardware in the past Key Words