本文選題：隨機等效采樣　切入點：短時時間測量　出處：《儀表技術(shù)與傳感器》2016年11期

【摘要】：針對隨機等效采樣觸發(fā)點與下一采樣點間的短時時間測量存在測量精度不高、電路復(fù)雜問題,提出基于時間鑒別的短時時間測量方法。首先,構(gòu)建基于邊沿檢測與窄脈沖擴展的時間鑒別電路,對短時間擴展以滿足測量要求;其次,設(shè)計測時電路,將時間轉(zhuǎn)化為電壓進行測量,以提高測量精度。最后,搭建基于FPGA的隨機等效采樣短時時間測量實驗系統(tǒng)。測試表明:該方法測量精度高且電路簡單,采樣系統(tǒng)波形重構(gòu)效果好,滿足了隨機等效采樣短時時間的測量需求。
[Abstract]:In order to solve the problem of low precision and complex circuit between the random equivalent sampling trigger point and the next sampling point, a method of short time measurement based on time discrimination is proposed. A time discriminant circuit based on edge detection and narrow pulse expansion is constructed, which extends short time to meet the requirement of measurement. Secondly, the time measuring circuit is designed to convert time to voltage to improve measurement accuracy. The experimental system of random equivalent sampling short time measurement based on FPGA is built. The test results show that the method has high measurement precision, simple circuit and good waveform reconstruction effect, which meets the demand of random equivalent sampling short time measurement.
【作者單位】： 大連大學(xué)通信與網(wǎng)絡(luò)重點實驗室;大連大學(xué)信息工程學(xué)院;
【基金】：遼寧省教育廳科學(xué)技術(shù)研究項目(L2014495)
【分類號】：TM935.15

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