【作者】 温苗利；

【导师】 杨世兴；

【作者基本信息】 西安科技学院 ， 控制理论与控制工程， 2002， 硕士

【摘要】 本文介绍了一种新型示波器——虚拟数字存储示波器的研制。 虚拟数字存储示波器是虚拟仪器技术的一种具体应用，它将软件和虚拟仪器硬件紧密结合在一起，在计算机上虚拟地实现了示波器的各种功能，并进行了扩充。虚拟数字存储示波器系统由信号采集、信号处理和结果显示三大部分构成，但是除了信号采集部分是由硬件实现之外，其它两部分都是由软件实现。本文主要是完成对软件的设计。 我们所设计的虚拟数字存储示波器总体上包括数据采集、波形显示、参数测量、频谱分析以及波形存储和回放等五大模块组成。它除了通用功能外，又具有普通示波器所没有的许多优点，如波形可存储为数据文件，以便进行永久保存、随时调用数据；进行波形实时显示、打印；成本低廉，功能可根据应用的需要不断加强。它的主要性能指标为两通道显示波形，波形可打印、存储，因它具有数字滤波功能，所以有效地提高了信噪比。 本文所选用的软件LabVIEW是美国NT公司的创新软件产品，也是目前应用最广泛、发展最快、功能最强的图形化软件开发环境。它具有开发周期短、运行速度快、可重用性、使用方便灵活等优点。因此LabVIEW对虚拟存储示波器的设计是一种最理想的方法。更多还原

【Abstract】 The paper introduces the studying of a new kind of oscillograph-virtualdigital-storage oscillograph.Virtual digital-storage oscillograph is the real application of virtual instrument technology. It hangs hardware with software together tightly and realizes every function of common oscillograph, even extends it. Virtual digital-storage oscillograph system includes signal acquisition , signal processing and output display. Except signal acquisition is completed by hardware, the others are realized by software. This paper mainly completes the designing of software.Virtual digital-storage oscillograph we designed consists data acquisition, wave display ,parameter measure, frequency spectrum and wave storage modules. It has some merits which common oscillograph doesn’t have, such as saving wave as permanence data, using data at any moment % real-time display and print waves cost low, extending functions based on requirement of application. The main performance of virtual digital-storage oscillograph is that it has two channels of input and the ability of printing and saving. Because it consists digital filter, it has effectively advanced signal-to-noise.LabVlEW is the innovate software of national instruments corps, of America. It is also the most widely used, the most quickly developing and the strongest function graph software. It has short empolder and fast run-rate. So LabVIEW is the best way of design virtual digital-storage oscillograph.更多还原