虚拟仪器中实时数据采集和控制的实现  

The Real-time Data Ddoping and Coatrolling of the Vitual Instrument

作　　者：庞君[1] 

机构地区：[1]攀枝花大学经济管理系,四川攀枝花617000

出　　处：《计算技术与自动化》2005年第2期63-65,共3页Computing Technology and Automation

摘　　要：虚拟仪器的重要特点之一是将传统仪器的大部分硬件用软件来代替并使其功能得以扩充。完全采用软件来实现以往由硬件完成的功能,其中一项关键的技术就是如何获得精确的采样与控制定时,也就是实现实时数据采集和控制。本文在虚拟仪器开发和研制的基础上,总结出虚拟仪器采样和控制定时的方法和措施,并对利用主板定时器和A/D板上的定时器定时进行了比较和研究,最后阐述利用动态链接库(DLL)实现实时数据采集的原理和方法。<Abstrcat>One important characteristics of the Virtual Instrument is that most hardware of the traditional instruments is replaced with software and their functions are expanded .TO realize the function ,one pivotal technology is how to gain accurate timing of the adopting and controlling ,that is to realize real-time adopting and controlling . Based on developing and research of the VI , the timing methods to adopting and controlling in VI are summarized ,and the timing method with timer in main board is compared with one in the A/D board , at last the theory and the method to real-time adopting with DLL are stated in this paper.

关 键 词：虚拟仪器 采样与控制定时 实时数据采集 动态链接库(DLL) 

分 类 号：TP311.1[自动化与计算机技术—计算机软件与理论]