Abnormal vibration signal extraction method for methanol generator

The invention relates to the technical field of data processing, in particular to an abnormal vibration signal extraction method for a methanol generator, and the method comprises the steps: obtaining a gray scale image corresponding to a vibration signal, obtaining the gray scale corresponding to each image block according to the gray scale corresponding to the gray scale image, obtaining a gray scale run matrix of each image block according to the gray scale corresponding to each image block, obtaining a high-gray-scale low-run-degree value and a low-gray-scale low-run-degree value in each image block, and obtaining an abnormal image block according to the high-gray-scale low-run-degree value and the low-gray-scale low-run-degree value in each image block, and S3, obtaining the shielded abnormal image block, obtaining the abnormal position in the abnormal image block according to the abnormal degree of the shielded abnormal image block obtained in the step S3 and the difference degree of the abnormal image