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对于嵌入式计算机系统,在线实时采集数据是其工作的基础。数据采集质量的好坏,决定了实时系统工作的优劣,特别是对模拟量信息的采集更要给予重视。1 数据采集不论系统采用何种监控方式,不论系统是在单机环境还是在分布式环境下工作,都离不开数据采集。人们往往以为数据采集只要在主机上加数据输入通道,并配以采样程序即可。实践证明问题并非那么简单,这里以模拟量为例,把问题归结为实时性、可靠性和精确性三个方面加以讨论。
For embedded computer systems, online real-time data acquisition is the basis of its work. Data acquisition quality is good or bad, determines the merits of real-time system work, especially for analog information collection should pay more attention. A data collection No matter what kind of monitoring system used, whether the system is in a stand-alone environment or in a distributed environment, are inseparable from data collection. People often think that data acquisition as long as the data input channel on the host, and with sampling procedures can be. Practice has proved that the problem is not so simple, here analogy, for example, the problem boils down to real-time, reliability and accuracy of the three aspects to be discussed.