【正文】
構(gòu)的更新使儀器結(jié)構(gòu)也不斷發(fā)展。 1 摘要 :本設(shè)計實現(xiàn)了對兩個相同頻率正弦信號的相位差的測量,被測信號由正弦信號發(fā)生電路產(chǎn)生,正弦信號發(fā)生電路采用 RC 正弦波振蕩電路,產(chǎn)生的正弦信號連接到數(shù)據(jù)采集卡上,本設(shè)計采用 MPS010501 多功能 USB 數(shù)據(jù)采集卡,通過數(shù)據(jù)采集卡傳送到 PC 機(jī),利用 LABVIEW 軟件進(jìn)行測量,編程的算法基于相關(guān)法原理,將兩個相同頻率正弦信號的相位差通過計算后顯示在 LABVIEW 前面板上。 關(guān)鍵詞 :相位差,正弦信號發(fā)生電路,數(shù)據(jù)采集卡,互相關(guān)法,虛擬儀器 2 Abstract: The design and implementation of the same frequency of the two sinusoidal signals phase of the measurement, the measured signal from the sinusoidal signal generating circuit generates the sinusoidal signal generating circuit RC sine wave oscillator circuit that generates a sinusoidal signal is connected to the data acquisition card, the designed using MPS010501 multifunction USB data acquisition card, data acquisition card to a PC using LABVIEW software measurement, programming algorithms based on the relevant law principle, the two same frequency sinusoidal signal by calculating the phase difference is displayed after the LABVIEW the front panel. Keyword : phase,Sinusoidal signal generating circuit,data acquisition cards,crosscorrelation method,virtual instruments 3 目錄 1 緒論 ....................................................... 4 課題研究的背景 ......................................... 4 課題研究的意義 ......................................... 4 2 虛擬儀器、 LABVIEW、數(shù)據(jù)采集卡介紹 ............................ 5 虛擬儀器的介紹 ......................................... 5 labview 介紹 ........................................... 5 數(shù)據(jù)采集卡介紹 ......................................... 7 3 相位差測量原理 ............................................. 8 相位差概念 ............................................ 8 相關(guān)法 ................................................ 9 4 整體方案設(shè)計 .............................................. 10 5 硬件系統(tǒng) .................................................. 10 正弦信號發(fā)生電路 ...................................... 10 數(shù)據(jù)采集卡 ........................................... 12 6 軟件系統(tǒng) .................................................. 12 前面板設(shè)計 ........................................... 12 程序設(shè)計 ............................................. 13 7 系統(tǒng)調(diào)試 .................................................. 16 結(jié)論 ........................................................ 19 參考文獻(xiàn) .................................................... 20 致謝 ........................................................ 21 4 1 緒論 課題研究的背景 隨著計算機(jī)技術(shù)、大規(guī)模集成電路技術(shù)與通信技術(shù)的快速發(fā)展,儀器技術(shù)領(lǐng)域也發(fā)生了巨大的變化。隨著儀器技術(shù)領(lǐng)域的各種創(chuàng)新積累 ,現(xiàn)代化測量儀器的性能發(fā)生了質(zhì)的飛躍,儀器的形式和概念發(fā)生了突破性的變化,出現(xiàn)了一種全新的儀器概念