Pipeline defect detecting and positioning method based on multi-sensing information fusion

The invention discloses a pipeline defect detecting and positioning method based on multi-sensing information fusion, which belongs to the technical field of pipeline nondestructive testing. The method comprises the following steps of performing state segmentation processing on a pipeline according to a pipeline defect detection signal and/or a three-axis attitude signal of pipeline detection equipment in the pipeline; positioning a pipeline defect signal in the pipeline defect detection signal to a pipeline section in a corresponding state; and calculating the position of the pipeline defect signal in each state pipeline section according to the running speed, the three-axis attitude signal and the mileage information of the pipeline detection equipment in the corresponding state pipeline section. According to the invention, the pipeline is segmented so that the defect of the pipeline can be preliminarily positioned in the pipeline section in a certain state, and the position of the defect in the pipeline se