In 2016, the new installed capacity of wind power in the world exceeded 54GW. In 2017, the annual global wind power generation capacity is expected to reach 60GW. The electric fan is developing towards the large, complicated, automatic and high - speed. However, the problems arising from the operation of power fans are becoming more and more prominent, resulting in great loss of manpower, material resources and financial resources. However, monitoring system lacks real time and reliability, and can not monitor and diagnose fan status in time.