Method for judging and identifying blast furnace pipeline stroke based on charge level thermal image

The invention provides a method for judging and identifying the stroke of a blast furnace pipeline based on a charge level thermal image, and relates to the technical field of blast furnace metallurgy, and the method comprises the following steps: S1, establishing a furnace throat charge level coordinate system; s2, taking the center of the furnace throat as a starting point, and equally dividing the central angle of the furnace throat into a sectors along the clockwise direction; s3, dividing the section of the blast furnace throat into n * a units by taking the diameter coordinate of the circular ring as an abscissa and the sector as an ordinate; s4, enabling the thermal imager to scan the material surface once at the same time interval; s5, starting from the second scanning of the thermal imager, calculating the temperature change amplitude of each unit after each scanning; s6, judging whether the local section of the blast furnace throat has a pipeline stroke or not based on the unit temperature change am