多通道数据采集卡同步功能的设计与实现

作者：高健，杨成忠，唐明明 日期：2008-02-25/span> 浏览：4000 查看PDF文档

多通道数据采集卡同步功能的设计与实现

高健，杨成忠，唐明明
(杭州电子科技大学 自动化学院,浙江 杭州 310018)

摘要：介绍了多通道数据采集卡同步功能的实现方法，讨论和处理了实现同步功能的相关问题。该设计采用一种二级时钟分配方案，不仅实现了板内各通道的真正实时的同步采集，并且可以方便灵活地实现多块板卡的板间同步，具有高速、高精度、多路同步采集的特点，可广泛应用于对信号的同步性能要求较高的数据测量系统中。
关键词：数据采集；同步触发；A/D转换
中图分类号：TP393文献标识码：A文章编号：1001-4551(2008)01-0082-04

Design and realization of the simultaneous function in the multichannel data acquisition card
GAO Jian, YANG Chengzhong, TANG Mingming
(College of Automation, Hangzhou Dianzi University, Hangzhou 310018, China)
Abstract: The design and realization of the simultaneous function in the multichannel data acquisition card were introduced. And also the correlative points of the simultaneous function were discussed and disposed. The design used a twostep clock distribution, which not only realized the realtime multichannel simultaneous acquisition in one card, but also realized the simultaneous acquisition function in more than one card very conveniently. The card has the features of highspeed, high precision and multichannel simultaneous acquisition, can be widely used in the data acquisition system which has high request of the simultaneous signal.
Key words: data acquisition; simultaneous trigger; A/D convert
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