数据采集中触发同步和精确定时的实现  

The Implementation of Trigger Synchronous and Precise Timing in Data Acquisition

作　　者：谭震[1] 蒋洪明[1] 

机构地区：[1]东南大学仪器科学与工程系,江苏南京210096

出　　处：《自动化仪表》1998年第5期8-9,12,共3页Process Automation Instrumentation

摘　　要：指出提高数据采集系统的精度仅仅依靠提高信号幅值的精度是不够的,还应保证采样间隔的精度和采样同步性,提出了保证采样间隔精度的措施.通过触发同步和精确定时,实现了对信号起点的精确采集,保证了连续采集时采样间隔的精确性和恒等性.To enhance the accuracy of the data acquisition system besides increasing the accuracy of the amplitude of the signals it is also necessary for ensuring the accuracy of the scanning duration and synchronisation of scanning. Thus the measure of ensuring the accuracy of scanning duration is stated. By using trigger synchronous and precise timing, the accurate acquisition on the starting point of the signal is implemented. The precision and identity of the scanning duration in continuous data acquisition are ensured.

关 键 词：数据采集 精度 采样间隔 定时 触发同步 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置]