【基础贴】LabVIEW_基础教程(一)

labview_基础教程(一).pdf

LabVIEW_基础教程(一).pdf (4.57 MB, 下载次数: 755 )

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本教程的目标是帮助您掌握以下内容：
• 理解前面板、程序框图、图标和连线板的概念
• 学会使用LabVIEW 的编程结构和数据类型
• 学会使用各种各样的编辑和调试技巧
• 创建和保存VI，以便作为子VI 调用
• 显示和记录数据
• 创建使用插入式DAQ 设备的应用程序
• 创建使用串口和GPIB 设备的应用程序
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目录结构如下：
学员指南
A. 关于本手册.................................................................................................vii
B. 学习本教程前的准备工作..................................................................viii
C. 安装教程软件............................................................................................ix
D. 教程目标......................................................................................................ix
E. 教程的行文规范.......................................................................................ix
第1 课
设计解决方案
A. 软件开发规范............................................................................................1-2
B. 问题描述......................................................................................................1-2
C. 设计................................................................................................................1-2
D. 实现................................................................................................................1-5
E. 测试................................................................................................................1-6
F. 维护................................................................................................................1-6
练习 1-1 软件开发规范.........................................................................1-7
G. 教程项目......................................................................................................1-9
第2 课
LabVIEW 导航
A. 虚拟仪器(VI) .............................................................................................2-2
B. VI 的组成部分............................................................................................2-2
C. 启动VI...........................................................................................................2-4
D. 项目浏览器.................................................................................................2-7
E. 前面板窗口.................................................................................................2-10
F. 程序框图窗口............................................................................................2-16
练习 2-1 概念：浏览VI ..........................................................................2-23
G. 搜索控件、VI 和函数...........................................................................2-24
练习 2-2 概念：浏览选板....................................................................2-26
H. 选择工具......................................................................................................2-27
练习 2-3 概念：选择工具....................................................................2-33
I. 数据流...........................................................................................................2-36
练习 2-4 概念：数据流.........................................................................2-37
J. 创建一个简单的VI..................................................................................2-38
练习 2-5 Simple AAP VI ..........................................................................2-41
第3 课
疑难解答和调试VI
A. LabVIEW 帮助工具.................................................................................3-2
练习 3-1 概念：帮助指南....................................................................3-5
B. 纠正断开的VI............................................................................................3-8
C. 调试技术......................................................................................................3-9
D. 未定义或不可预期数据........................................................................3-13
E. 错误检查和处理.......................................................................................3-14
练习 3-2 概念：调试...............................................................................3-16
目录
LabVIEW 编程简介教程iv ni.com/china
第4 课
实现VI
A. 设计前面板窗口.......................................................................................4-2
B. LabVIEW 数据类型.................................................................................4-7
C. 为代码添加说明信息.............................................................................4-13
练习 4-1 DetermineWarnings VI ......................................................4-15
D. While 循环...................................................................................................4-21
练习 4-2 Auto Match VI..........................................................................4-24
E. For 循环.........................................................................................................4-29
练习 4-3 概念：While 循环与For 循环对比...........................................................................................4-32
F. 为VI 设置定时..........................................................................................4-34
G. 迭代数据传递............................................................................................4-34
练习 4-4 AverageTemperature VI ..................................................4-37
H. 数据绘图......................................................................................................4-40
练习 4-5 TemperatureMultiplot VI ...................................................4-45
I. 条件结构......................................................................................................4-48
练习 4-6 DetermineWarnings VI ......................................................4-53
J. 公式节点......................................................................................................4-58
练习 4-7 自学：Square Root VI .........................................................4-59
练习 4-8 自学：Determine Warnings VI （挑战） ...............................................................................4-62
练习 4-9 自学：Determine Warnings VI （挑战） ...............................................................................4-65
第5 课
相关数据
A. 数组................................................................................................................5-2
练习 5-1 概念：操作数组....................................................................5-7
B. 簇.....................................................................................................................5-13
练习 5-2 概念：簇....................................................................................5-18
C. 自定义类型.................................................................................................5-22
练习 5-3 自定义类型...............................................................................5-25
第6 课
存储测量数据
A. 理解文件I/O..............................................................................................6-2
B. 理解高层文件I/O....................................................................................6-3
练习 6-1 SpreadsheetExample VI ...................................................6-4
C. 底层文件I/O..............................................................................................6-7
练习 6-2 Temperature LogVI..............................................................6-9
练习 6-3 自学：Read VCard VI.........................................................6-11
第7 课
开发模块化应用程序
A. 理解模块化.................................................................................................7-2
B. 创建图标和连线板..................................................................................7-3
C. 使用子VI......................................................................................................7-7
练习 7-1 DetermineWarnings VI ......................................................7-9
目录
© National Instruments Corporation vLabVIEW 编程简介教程
第8 课
数据采集
A. 使用硬件......................................................................................................8-2
B. 与硬件通信.................................................................................................8-4
C. 模拟一个DAQ 设备...............................................................................8-6
练习 8-1 概念：MAX................................................................................8-7
D. 测量模拟输入............................................................................................8-12
练习 8-2 触发的模拟输入VI ................................................................8-14
E. 产生模拟输出............................................................................................8-18
F. 使用计数器.................................................................................................8-19
练习 8-3 事件计数VI ..............................................................................8-20
G. 使用数字I/O..............................................................................................8-23
练习 8-4 可选：数字计数VI ...............................................................8-24
第9 课
仪器控制
A. 使用仪器控制............................................................................................9-2
B. 使用GPIB.....................................................................................................9-2
C. 使用串口通信............................................................................................9-3
D. 使用其它接口............................................................................................9-5
E. 软件架构......................................................................................................9-5
练习 9-1 概念：用MAX 配置GPIB .................................................9-7
F. 使用仪器I/O 助手...................................................................................9-9
练习 9-2 概念：仪器I/O 助手 ...........................................................9-10
G. 使用VISA .....................................................................................................9-16
练习 9-3 VISA 写入& 读取 VI .............................................................9-18
H. 使用仪器驱动程序..................................................................................9-21
练习 9-4 概念：NI Devsim VI...............................................................9-23
第10 课
常用设计技巧和设计模型
A. 使用顺序编程............................................................................................10-2
B. 使用状态编程............................................................................................10-4
C. 状态机...........................................................................................................10-5
练习 10-1 State MachineVI ...................................................................10-13
D. 使用并行机制............................................................................................10-19
附录 A
分析和处理数值数据
A. 选择分析的正确方法.............................................................................A-2
B. 分析类别......................................................................................................A-3
练习 A-1 概念：分析类型....................................................................A-5
附录 B
测量基础
A. 使用基于计算机的测量系统..............................................................B-2
B. 理解测量概念............................................................................................B-3
C. 提高测量质量............................................................................................B-10
练习 B-1 理论：测量基础....................................................................B-14
目录
LabVIEW 编程简介教程vi ni.com/china
附录 C
CAN：控制器局域网
A. CAN 的发展历史......................................................................................C-2
B. CAN 基础.....................................................................................................C-3
练习 C-1 概念：CAN 设备配置 .........................................................C-6
C. 通道配置......................................................................................................C-8
练习 C-2 通道配置....................................................................................C-11
D. CAN API........................................................................................................C-15
E. LabVIEW 中的CAN 编程（通道API）........................................C-16
练习 C-3 读写CAN 通道 .......................................................................C-19
练习 C-4 同步CAN 和DAQ.................................................................C-23