Vibration and noise online monitoring and fault diagnosis system of scroll compressor

Abstract

The invention comprises a vibration and noise online monitoring device and a fault diagnosis system of a scroll compressor. The vibration and noise online monitoring device of the scroll compressor is composed of a scroll compressor, a piezoelectric-type accelerometer, a sound microphone, a preamplifier, an adapter, a signal conditioning module, an A / D (analog / digital) conversion module, a signal analysis module and a result displaying module, wherein the piezoelectric-type accelerometer is fixed on a shell of the scroll compressor; the sound microphone is arranged near the scroll compressor; the piezoelectric-type accelerometer and the sound microphone respectively collect the vibration amount and the noise amount of the scroll compressor; an analog signal is amplified and converted into a digital signal by the preamplifier, the adapter, the signal conditioning module and the A / D conversion module, and then the digital signal is sent to a computer and is analyzed by a computer software; and the analysis result is displayed. The fault diagnosis system of the scroll compressor is characterized in that the signal analysis module analyzes the vibration amount and the noise amount, and the operation stability and the faults of the scroll compressor device are judged through the result displaying module.

Description

technical field [0001] The on-line vibration, noise monitoring and fault diagnosis system of a scroll compressor of the present invention relates to a detection and diagnosis system, specifically an on-line vibration, noise monitoring and fault diagnosis system of a scroll compressor. Background technique [0002] At present, hermetic refrigeration scroll compressors are mostly used in household appliances such as air conditioners, refrigerators, and freezers, and these appliances play a very important role in people's daily life, so their performance directly affects people's life. Quality of Life. With the development of science and technology and the continuous improvement of human requirements for the living environment, its noise has been paid more and more attention by people. Then, as the heart of this type of household appliances, the scroll compressor must become the main source of noise, and it is also the main object of vibration and noise reduction for this type...

AI Technical Summary

Problems solved by technology

Most of the analysis methods currently use traditional spectrum analysis techniques, but rarely apply modern signal analysis methods and other issues.

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