李寧，秦樹(shù)人，吳瑩
（重慶大學(xué)測(cè)試中心，重慶 400044）
摘要：在信號(hào)采集和處理過(guò)程中，Visual C＋＋存在數(shù)據(jù)處理和結(jié)果顯示方面的不足，Matlab存在可視化和數(shù)據(jù)采集方面的不足，本文在Visual C＋＋環(huán)境下調(diào)用Matlab Engine函數(shù)，有效地解決了這兩方面的問(wèn)題；采用多線程編程技術(shù)，同時(shí)采集和顯示信號(hào)，有效地防止了采樣過(guò)程中的掉點(diǎn)。利用本方法對(duì)UA302型采集卡采集到的信號(hào)進(jìn)行處理，得到了滿意的結(jié)果。
關(guān)鍵詞：Visual C＋＋；Matlab Engine；多線程技術(shù)；UA302采集卡
中圖分類(lèi)號(hào)：TP311.5文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1672-4984(2006)03-0082-04
Singal sampling and processing based on mixed programming with multi-thread VC++ and Matlab
LI Ning,QIN Shu-ren,WU Ying
(Test Center, Chongqing University,Chongqing 400044,China)
Abstract：In signal sampling and processing system, VC shows inefficiency in data procession and results demonstration, while Matlab shows its inefficiency in virtualization and data acquisition. This paper showed a mixed programming used by invoking the Matlab engine in VC environment could solve two problems effectively. Multi-thread technology was developed to realize the synchronization of signal sampling and demonstration and prevented the signal gathering from missing sample spots. An example of a sine wave acquired from UA302 using this technique was also introduced in the paper, which has been proved to be feasible in practice.
Key words：Visual C＋＋；Matlab engine; Multi-thread technology; UA302
