Crusher bearing monitoring device based on multi-cantilever acoustic array technology

The invention belongs to engineering machinery, and particularly discloses a crusher bearing monitoring device based on a multi-cantilever acoustic array technology, which is characterized in that a sensor collects original signals, the original signals comprise original images and original audio signals, and the original signals are analyzed and processed to obtain effective target crushing bearing equivalent source intensity; based on the frequency domain of the effective target crushing bearing equivalent source intensity, frequency spectrum data on each filtering channel are obtained through calculation; obtaining feature data based on logarithm of the spectrum data, performing discrete cosine transform on the feature data to obtain feature parameters of the audio, and obtaining a digital relationship between the feature parameters and the number of filter channels corresponding to the filtering channels; and comparing the characteristic parameters with a crusher bearing fault audio reference template lib