Power electronic monitoring system and working method thereof

The invention discloses a power electronic monitoring system and a working method thereof, the system comprises a host and a sub-machine, the host detects whether a person approaches through a microwave module, and sends a field picture to the sub-machine through a wireless transmission module; a pneumatic actuating mechanism is also included and is respectively connected with the host and power equipment, and the host controls a switch of the power equipment through the pneumatic actuating mechanism. Whether a person approaches or not is detected through a microwave probe, a data model is designed through waveform changes, and the approximate approaching distance of the person and whether the person walks into the device or is away from the device are effectively calculated; the system effectively solves the problems that on-site dangerous points exist, the number of first web parts is large, and the number of full-time guardians is small, prevents the dangerous points which are not very high in danger due t