目 录
1 绪论.................................................................................................................................................1
1.1 前言......................................................................................................................................1
1.2 设计背景与意义..................................................................................................................1
1.3 国内外现状..........................................................................................................................2
1.4 设计研究方案......................................................................................................................2
2.虚拟仪器概述.................................................................................................................................3
2.1 虚拟仪器系统的组成..........................................................................................................4
2.2 虚拟仪器的构成..................................................................................................................5
2.2.1 虚拟仪器的硬件系...................................................................................................5
2.2.2 虚拟仪器的软件系统...............................................................................................5
2.3 虚拟仪器与传统仪器优缺点对比......................................................................................6
3.LabVIEW 的软件概述...................................................................................................................7
3.1LabVIEW 软件的特点.........................................................................................................7
3.2 LabVIEW 程序的构成........................................................................................................8
3.3 LabVIEW 的操作选板......................................................................................................10
4 传统示波器与虚拟示波器...........................................................................................................13
4.1 传统示波器........................................................................................................................13
4.1.1 传统示波器工作原理.............................................................................................13
4.1.2 传统示波器的分类.................................................................................................15
4.2 虚拟示波器........................................................................................................................15
4.2.1 虚拟示波器的组成结构.........................................................................................16
4.2.2 虚拟示波器的性能指标.........................................................................................16
4.2.3 传统示波器与虚拟示波器对比.............................................................................17
5.虚拟示波器的软件设计...............................................................................................................18
5.1 数据采集模块....................................................................................................................19
5.1.1 数据采集系统的构成.............................................................................................20
5.1.2 采样原理.................................................................................................................21
5.2 用户登陆界面....................................................................................................................22
5.3 虚拟示波器主界面............................................................................................................24
5.4 滤波模块............................................................................................................................26
5.4 时域分析与参数测量模块................................................................................................28
5.5 频谱分析模块....................................................................................................................29
5.6 波形存储和回放...............................................................................................................31
6.虚拟示波器的调试及分析...........................................................................................................32
6.1 程序调试............................................................................................................................32
6.2 虚拟示波器数据显示........................................................................................................33
6.3 噪声干扰的防止方法........................................................................................................37
7 总结与展望...................................................................................................................................38
7.1 总结....................................................................................................................................38
7.2 展望....................................................................................................................................39
参考文献..........................................................................................................................................40
致 谢............................................................................................................................................41
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