System for monitoring vibration of rotating machinery rolling bearing in wireless mode

Abstract

The invention relates to a system for monitoring the vibration of a rotating machinery rolling bearing in a wireless mode. In the system, a rotating machinery rolling bearing is used as a monitoring object, acceleration transducers are used for detecting a vibration signal of the bearing, the signal is changed into a digital signal through filtering, amplifying and A / D (Analog / Digital) conversion, the digital signal is sent to an upper computer in a wireless transmission mode, characteristic parameters are obtained by the upper computer through data analysis, a three-dimensional vibration signal eigenvector is constituted jointly by the characteristic parameters of three detection points, a neural network is used for analyzing whether a fault exists or not, pattern recognition is used forjudging the specific type of the fault, and finally, a fault message is processed, and the functions of data storage and display and fault alarm are provided. The system for monitoring vibration in awireless mode is suitable for the application occasions of the rotating machinery in metallurgy, electricity, petroleum, chemical industry, automobile, ship building and the like, and has the characteristics of simple structure, reliable performance, long service life, strong real-time property and the like.

Description

technical field [0001] The invention belongs to the technical field of detection, and in particular relates to a wireless vibration monitoring system for rolling bearings of rotating machinery. . Background technique [0002] Rolling bearings are the most commonly used components in various types of rotating machinery. 30% of the failures of rotating machinery are directly or indirectly caused by cracks, spalling, shocks, vibrations, etc. of rolling bearings. Some key equipment plays an important role in the production process. Once a failure occurs, the direct and indirect losses will be huge. [0003] For the diagnosis of rolling bearings, from the regular patrol inspection and diagnosis by staff in the 1980s to today's network-based distributed structure, the structure of the system is becoming more and more complex, and the real-time performance is getting higher and higher. The current related technologies include handheld vibration analyzers, ultrasonic flaw detector...

AI Technical Summary

Problems solved by technology

From the perspective of these related technologies, the performance of handheld vibration analyzers and ultrasonic flaw detectors is relatively single, and there are few points that can be monitored at the same time, requiring staff to operate; the online detection series is traditional cabinet type, bulky, scalable and maintainable Not strong; at the same time, there are a lot of wiring problems, installation, use, and maintenance are inconvenient, and it is not optimal in terms of system use and cost, and the fault detection rate is not high

Images