Slope crack monitoring device and method based on digital microscope technology

The invention relates to a slope crack monitoring device and method based on a digital microscope technology, the slope crack monitoring device comprises a main case fixed on the fixed side of a slope through a fixed point A, an outer steel stay wire and two fixed points, the steel stay wire is connected to a hook outside the main case, crosses a crack and is fixed on another fixed point B, and the fixed point B is fixed on the movable side of the slope. A digital microscope camera A, a digital microscope camera B, a reel, an inner steel stay wire and a digital mobile phone are installed in the mainframe box, a spring piece is installed in a reel shaft, one end of the inner steel stay wire is fixed to the reel, and the other end of the inner steel stay wire penetrates through a mainframe box hole and is connected to an outer steel stay wire through a hook. A length micrometer graduated scale and an angle micrometer graduated scale are fixed on the inner steel stay wire, a digital microscope camera A is fixedl