Design of Mine-used Feed Switch with Double-controller

A design scheme of mine-used feed switch based on double-controller was introduced.The feed switch is designed with double-controller of single-chip microcomputer and DSP,so as to separate data collection with fault judgment,which improves running speed and intelligence level.And the feed switch has functions of overload protection、open-phase protection、short circuit protection、unbalance protection、leakage locking protection、leakage protection and selective leakage protection.The test result showed that the feed switch has stable performance,quick running speed and high precision.