Method and device for detecting liquid level of resin solution tank

The invention belongs to the field of precious metal production, and provides a method and device for detecting a liquid level of a resin solution tank which are more intelligent and stable and can realize automatic adjustment, so that the concentration efficiency of a precious metal solution is maximized. The method comprises the following steps of step 1), directly aligning a resin solvent tankwith a camera and collecting videos; step 2), performing tilt correction on a video image, and extracting a G component of the image as an original image for gray scale enhancement; step 3), performing binarization processing on the image and obtaining a binary image; step 4), performing expansion and corrosion calculations; step 5), extracting a bottle body; and step 6), determine the liquid level height through an SOM clustering algorithm. The method for detecting the liquid level of the resin solution tank provided by the invention realizes the automatic adjustment of liquid level control by collecting a liquid lev