数据采集系统中的触发设计

Trigger Design in the Data Acquisition System

数据采集系统如果要获取有用的数据进行分析、处理和显示,那么就要靠系统中的触发来进行有用数据的截取。触发技术的研究是数据采集技术中重要的一环。通过实际工程应用,对于触发的概念、分类和实现方法都作了总结,并提出了一些新的看法,而且对触发技术的实现进行了较详细的探讨。硬件触发和软件触发中的某些方法已经在基于VXI总线的数据采集卡的设计中有所应用,并且有了很好的应用效果。这些方法对于其它数据采集系统中的触发设计同样能起到一定的借鉴作用。

The trigger design is important in the data acquisition system. The right trigger can make the acquisition credible and make the system get the valid measurement data. Through the summarizing and analyzing of the technology of trigger design, many methods to the designs in the DAQ system are introduced. The methods have had many good applications in the DAQ system.