Newly added peak point frequency positioning method, device and equipment based on DBSCAN algorithm

The invention discloses a newly added peak point frequency positioning method, device and equipment based on a DBSCAN algorithm, and the method comprises the steps: obtaining a noise time domain signal and a vibration time domain signal of machine equipment, converting the noise time domain signal and the vibration time domain signal into a frequency spectrum through FFT, and extracting a frequency sequence and an amplitude sequence of the frequency spectrum; acquiring the peak point frequency in the frequency spectrum by using the frequency sequences and the amplitude sequences of the plurality of pairs of frequency spectrums; clustering the peak point frequencies by using a DBSCAN (Density-Based Spatial Clustering of Applications with Noise) algorithm, and after eliminating noise peak point frequencies, recording center point frequencies of all clusters and cluster radiuses corresponding to the center point frequencies to generate a peak point frequency template; and acquiring a peak point frequency in a to