• 激光輪廓測量儀的高頻相位測量電路設(shè)計

     

    (四川大學(xué)測試技術(shù)與控制工程系,四川 成都 610065)

    摘  要:高頻相位測量裝置是激光輪廓測量儀不可缺少的一部分,它完成的工作是對兩路被測信號進(jìn)行相位測量。文中介紹了一種用混頻原理和鎖相環(huán)技術(shù)將高頻轉(zhuǎn)化為低頻,并且用相關(guān)計數(shù)法對低頻相位進(jìn)行測量的方法。低頻部分主要是利用了單片機(jī)豐富的軟硬件資源和CPLD器件靈活多用功能來實現(xiàn)的。通過混頻電路和低頻相位測量電路的組合,能較高精度地完成此相位測量任務(wù)。

     

    關(guān)鍵詞:混頻原理;鎖相環(huán)技術(shù);單片機(jī);CPLD;相關(guān)計數(shù)

    中圖分類號:TM933.3+12, TN249        文獻(xiàn)標(biāo)識碼:A      

     文章編號:1672-4984(2008)01-0022-03

     

    Measuring circuit design for high-frequency phase of laser profilometer

    OU Wen-chu, XIE Chi

    (Department of Testing Technology and Control Engineering,Sichuan University,Chengdu 610065,China)

     

    Abstract: High-frequency phase measuring equipment is an indispensable part of the laser profilometer. Its work is to measure the phases of two measured signals. One measurement method using designed circuit to change high-frequency into low-frequency with the frequency mixing theory and phase locking technique, then using correlative counting method to measure low-frequency was introduced. The low-frequency part mainly used the ample resource of SCM and flexible functions of CPLD. With combination of frequency mixing circuit and low-frequency measurement circuit, the designed circuit can measure the phase more accurately.

     

    Key words: Frequency mixing theory; Phase locking technique; SCM(single-chip computer); CPLD; Correlative counting method

     

    Editor:liyan

     




     
     
    網(wǎng)站首頁  |  關(guān)于我們  |  聯(lián)系我們  |  廣告服務(wù)  |  版權(quán)隱私  |  友情鏈接  |  站點導(dǎo)航
     
    国产在线无码精品无码| 久久免费视频精品| 精品动漫一区二区无遮挡| 中文字幕精品一区二区精品| 欧美精品大香伊蕉在人线| 国产精品色内内在线播放| 国产成人无码精品久久久露脸| 2022国产精品手机在线观看| 国产三级精品三级| 国产精品久久久久乳精品爆| 99久久er热在这里只有精品99| 精品国产香蕉伊思人在线在线亚洲一区二区 | 老牛精品亚洲成av人片| 久久精品乱子伦免费| 久久国产精品免费一区| 国产精品第一页爽爽影院| 精品国产品国语在线不卡| 国产精品无码久久久久久| 国产精品va久久久久久久| 日本精品αv中文字幕| 国产精品久久久久久久久软件| 无码国产乱人伦偷精品视频| 精品露脸国产偷人在视频| 国产成人亚综合91精品首页 | 久热这里只精品99re8久| 国产精品99精品视频网站| 日韩精品中文字幕在线| 精品少妇人妻AV一区二区三区| 揄拍自拍日韩精品| 久久亚洲AV无码精品色午夜麻 | 国产成人精品美女在线| 亚洲精品久久无码| 亚洲精品免费网站| 久久久精品久久久久三级| 91精品免费高清在线| 99精品一区二区免费视频| 久久在精品线影院精品国产| 青草青草久热精品视频在线网站| 久久这里只有精品视频99| 久久97久久97精品免视看| 国产精品99久久久久久www|