Based on discussion , the significance of the paper is summarized and the main contents of the paper are listed . 2 . some schemes are compared in the design of mcu - based protection equipment ' s control section 数据采集方面,比较了vfc与逐次逼近型a / d ,片内a刃与片外a了d的优缺点,考虑到将来的功能扩展和通用性设计了本装置的数据采集系统。