描述
输入板的分辨率应该是毫秒级的。它的难点是事件顺序记录(SOE)。在输入板应该有存储历史数据的功能。当人机界面调出查看时,能把事件的时间顺序显示出来。SOE(SEQUENCE OF
应用比较多的数据采集系统是美国的OPTO22产,一路一个小模块,分别有开关量(DI、DO)和模拟量(AI、AO)的小模块。
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