Research on Current Signal Acquisition of Soft-Start Controller

To study of current signal acquisition circuit the mine explosion-proof and intrinsically safe type AC motor soft starter controller, which carries on AC sampling according to the soft start controller. the system adopts AC sampling method for sensor two information without any deformation processing, it is high-speed sampling. At the same time, the system uses root-mean-square algorithm to process AC signal and obtain the required current parameters. The experiment proves that this method enhances the overall system performance.