Online monitoring and early warning system for vibration of intelligent motor

Abstract

The invention relates to an online monitoring and early warning system for vibration of an intelligent motor, which belongs to the field of intelligent motor monitoring. The system comprises a vibration sensor, a processing and analysis module, a calendar module, a storage module, a communication module, a field alarming module and a portable device. the vibration sensor measures the real-time vibration data of the motor, the data are transmitted to the processing and analysis module, the operation and the working state of the motor are analyzed and judged in combination of data measured by an electric parameter measuring module and a rotation speed measuring module, and in view of abnormal vibration features under different load rates, field alarming or early warning to the portable device is carried out. Besides, early warning is also carried out for the changing trend of the vibration frequency and the changing trend of the amplitude. The system can realize online vibration monitoring and early warning when the motor is abnormal or in an abnormal working state, timely finding and timely processing are carried out, expanding of motor fault can be effectively avoided, the maintenance efficiency is greatly improved, the structure is simple, the cost is low, the measurement is accurate, and the system can be widely applied to intelligent and online vibration monitoring on middle and small-sized motors.

Description

technical field [0001] The invention relates to an intelligent motor vibration on-line monitoring and early warning system, in particular to a system capable of performing early warning while realizing intelligent on-line monitoring of motor vibration, belonging to the field of intelligent motor monitoring. Background technique [0002] The safe and reliable operation of the motor depends to a large extent on its vibration. During actual operation, if the key mechanical parts of the motor are damaged or abnormal and continue to run, abnormal vibration changes of the motor will be induced. For a motor that has been in abnormal vibration operation for a long time, its mechanical and electrical performance will be greatly reduced. If it is not repaired in time, it will often cause irreversible damage to the key components of the motor, reduce the service life of the motor, and destroy the stability of the system. The production of enterprises brings potential safety hazards, s...

AI Technical Summary

Problems solved by technology

However, this patent only proposes a method that can identify partial faults of hydroelectric units, and requires the establishment of a basic database and a fault database. The required equipment and algorithms are complex, and the cost of hardware is high. It is difficult to realize on-site monitoring and early warning; abnormalities are not considered The impact of vibration precursors, power fluctuations and load rates can easily lead to missed or false alarms

Moreover, the causes and characteristics of the vibration of hydroelectric units are very different from those of small and medium-sized motors. This method cannot be used for small and medium-sized motors.

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