基于Labview的虛擬數(shù)字鐘設(shè)計(jì)

電子機(jī)電論文編號(hào):JD865 附開題報(bào)告,任務(wù)書,外文翻譯,源代碼,論文字?jǐn)?shù):17457,頁數(shù):32

摘要 
目錄 
1．緒論  1
1.1課題的現(xiàn)狀與發(fā)展趨勢  1
  1.2課題研究的意義  1
2.虛擬儀器概述  2
  2.1虛擬儀器的概念  2
2.1.1虛擬儀器的產(chǎn)生  2
2.1.2 虛擬儀器的發(fā)展過程  3
2.2虛擬儀器與傳統(tǒng)儀器的比較  3
2.3 虛擬儀器系統(tǒng)的構(gòu)成  4
2.31計(jì)算機(jī)系統(tǒng)  5
2.32接口硬件設(shè)備  5
2.4虛擬儀器的軟件開發(fā)平臺(tái)  6
  2.5 LabVIEW及其應(yīng)用  7
      2.5.1 LabVIEW  7
2.5.2 Labview程序的運(yùn)行機(jī)制  9
 2.5.3 LabVIEW應(yīng)用于測試與測量  9
2.5.4 LabVIEW應(yīng)用于實(shí)驗(yàn)室研究與自動(dòng)化  9
2.5.5 LabVIEW應(yīng)用于過程控制和工業(yè)自動(dòng)化  10
2.5.6 LabVIEW與虛擬儀器  10
3. 虛擬數(shù)字鐘系統(tǒng)介紹  11
3.1數(shù)字鐘的功能  11
3.11時(shí)鐘信號(hào)發(fā)生器的功能   11
3.12七段譯碼器的功能  11
3.13十進(jìn)制計(jì)數(shù)芯片的功能  12
3.14 校時(shí)電路  12
3.2虛擬數(shù)子鐘系統(tǒng)實(shí)現(xiàn)  13
4. 虛擬數(shù)字鐘的實(shí)現(xiàn)方案  13
  4.1虛擬數(shù)字鐘系統(tǒng)設(shè)計(jì)  13
4.2時(shí)鐘信號(hào)發(fā)生器  14
4.3七段譯碼器模塊  17
4.4十進(jìn)制計(jì)數(shù)器芯片  19
4.5校時(shí)電路  23
4.6虛擬數(shù)字鐘系統(tǒng)實(shí)現(xiàn)  24
5.虛擬數(shù)字鐘系統(tǒng)涉及的關(guān)鍵技術(shù)  27
5.1 Labview軟件  27
5.2前面板設(shè)計(jì)  27
5.3 程序圖設(shè)計(jì)  27
5.4模快和控件的調(diào)用  28
6．虛擬數(shù)字鐘與傳統(tǒng)數(shù)字鐘的比較  29
7．結(jié)論  29
參考文獻(xiàn)  31
致謝  32

摘  要：虛擬儀器的出現(xiàn)徹底打破了傳統(tǒng)儀器只能由廠家定義，用戶無法改變的模式，計(jì)算機(jī)技術(shù)與網(wǎng)絡(luò)技術(shù)的飛速發(fā)展，使得虛擬儀器已經(jīng)成為現(xiàn)代電子測量儀器發(fā)展的趨勢。
數(shù)字鐘是一種采用數(shù)字電路可實(shí)現(xiàn)時(shí)、分、秒顯示電路的計(jì)時(shí)裝置，在數(shù)字邏輯電路中，數(shù)字鐘的構(gòu)建具有其典型意義。
虛擬儀器具有傳統(tǒng)儀器無法比擬的優(yōu)勢，在測試領(lǐng)域，虛擬儀器可取代一部分獨(dú)立儀器的工作,完成復(fù)雜環(huán)境下的自動(dòng)化測試，完成傳統(tǒng)的獨(dú)立儀器難以勝任的的工作。
本文首先介紹虛擬儀器的軟件開發(fā)環(huán)境LabVIEW，虛擬數(shù)字鐘的組成原理，充分利用虛擬儀器LabVIEW軟件技術(shù)中提供的布爾邏輯量及運(yùn)算符實(shí)現(xiàn)了構(gòu)建虛擬數(shù)字鐘的各個(gè)模塊，計(jì)時(shí)模塊和校時(shí)模塊等。各模塊之間通過高層功能的VI調(diào)用一個(gè)或多個(gè)底層的特殊功能的VI，完成了虛擬數(shù)字鐘的實(shí)現(xiàn)。

關(guān)鍵詞：數(shù)字鐘；虛擬儀器；labview；數(shù)字邏輯電路

The design for a virtual digital clock based on labview
Abstract: Due to the emergence of virtual instruments, the mode which traditional instrument can only be defined by manufacturers and can not changed by the user, is broken thoroughly. With the rapid development of computer and network technology, the virtual instrument has become a developing trend of modern electronic measuring instruments.    
The digital clock is a counting device which can be realized on displaying hours, minutes and seconds time by using digital circuits. In digital logic circuits, the construction of digital clocks has its typical significance.
Virtual instruments have advantages which the traditional instruments cannot match. In the measuring field, virtual instruments can be used to replace a part the work of independent instruments, to acquire the automated test in a complex environment, to accomplish the incompetent task for traditional independent instruments.
In this paper the software development environment LabVIEW of the virtual instrument and the composition principle of virtual digital clocks are introduced firstly. Boolean logic volumes and operators of LabVIEW are taken full advantage for building modules of virtual digital clock, such as counting modules and correcting time modules etc. Each bottom module can be called by high-level functions of VI for realization of a virtual digital clock.
Keywords: a digital clock; virtual instruments; LabVIEW; digital logic circuits