LabVIEW虛擬儀器入門
編制VI程序......................................................................................................................1-1
打開一個(gè)新的模板VI................................................................................................1-2
在前面板中加入一個(gè)控件.........................................................................................1-4
改變信號類型...........................................................................................................1-4
在程序框圖中連接對象............................................................................................1-5
運(yùn)行VI程序...............................................................................................................1-5
調(diào)整信號..................................................................................................................1-7
在圖表中顯示兩個(gè)信號............................................................................................1-9
定制Knob (旋鈕) 控件...........................................................................................1-10
定制波形圖.............................................................................................................1-10
小結(jié)
新建(New)對話框和VI模板.....................................................................................1-12
前面板....................................................................................................................1-12
屬性對話框.............................................................................................................1-12
程序框圖................................................................................................................1-12
Express VIs...........................................................................................................1-13
第二章 分析和保存信號
利用模板建立VI程序........................................................................................................2-1
打開一個(gè)新的模板VI................................................................................................2-1
修改程序框圖...........................................................................................................2-2
修改前面板...............................................................................................................2-3
分析信號的幅值.......................................................................................................2-4
添加警示燈...............................................................................................................2-5
設(shè)置報(bào)警等級界限....................................................................................................2-5
向用戶報(bào)警...............................................................................................................2-6
配置VI使數(shù)據(jù)保存至文件.........................................................................................2-7
保存數(shù)據(jù)到文件.......................................................................................................2-7
添加按鈕來觸發(fā)數(shù)據(jù)存儲(chǔ).........................................................................................2-8
用戶控制下保存數(shù)據(jù)................................................................................................2-8
小結(jié)
LabVIEW幫助資源.................................................................................................2-10
控制件和顯示件.....................................................................................................2-10
保存數(shù)據(jù)................................................................................................................2-10
錯(cuò)誤和壞線.............................................................................................................2-11

第三章 擴(kuò)展VI的特性
利用模板創(chuàng)建一個(gè)新的VI.................................................................................................3-1
打開一個(gè)空的VI........................................................................................................3-1
添加一個(gè)模擬信號的Express VI...............................................................................3-2
調(diào)整信號..................................................................................................................3-3
定制前面板...............................................................................................................3-3
設(shè)定VI連續(xù)運(yùn)行至用戶停止.....................................................................................3-4
控制執(zhí)行速度...........................................................................................................3-5
利用表格顯示數(shù)據(jù)....................................................................................................3-6
小結(jié)
利用LabVIEW的幫助資源........................................................................................3-8
定制程序框圖代碼....................................................................................................3-8
第四章 采集數(shù)據(jù)和與儀器通信
獲取信號..........................................................................................................................4-1
創(chuàng)建一個(gè)NI-DAQmx任務(wù).........................................................................................4-1
測試任務(wù)..................................................................................................................4-2
用DAQ設(shè)備采集的數(shù)據(jù)繪圖.....................................................................................4-3
編輯NI-DAQmx任務(wù).................................................................................................4-3
直觀的比較兩個(gè)電壓讀數(shù).........................................................................................4-4
與儀器通信......................................................................................................................4-5
選擇一個(gè)儀器...........................................................................................................4-5
獲得并解析儀器有關(guān)信息.........................................................................................4-5
小結(jié)
DAQ Assistant Express VI.......................................................................................4-7
任務(wù).........................................................................................................................4-7
Instrument I/O Assistant Express VI........................................................................4-7
第五章 使用LabVIEW其它特性
NI例程查詢......................................................................................................................5-1
所有的控制和指示對象....................................................................................................5-1
所有的VI和函數(shù)...............................................................................................................5-2
VI.............................................................................................................................5-2
函數(shù).........................................................................................................................5-3
數(shù)據(jù)類型..........................................................................................................................5-2
動(dòng)態(tài)數(shù)據(jù)類型...........................................................................................................5-3
何時(shí)使用其它LabVIEW的特性........................................................................................5-5