Ladle slag measuring device and method

The invention discloses a steel ladle slag measuring device and method. The steel ladle slag measuring device comprises a stock rod, an insertion device, a camera, a placement frame, a machine vision system and a man-machine interface control system, the stock rod is used for detecting the thickness of the steel slag; the insertion device is in communication connection with the man-machine interface control system and is used for being controlled by the man-machine interface control system to convey the stock rod from the placing frame to a measuring position, inserting the stock rod into a steel ladle to be fully contacted with a molten steel layer and a steel slag layer and then placing the stock rod back to the placing frame; the camera is respectively in communication connection with the machine vision system and the man-machine interface control system, and is used for being controlled by the man-machine interface control system to shoot and transmitting shooting data to the machine vision system; the pl