Cylindrical surface information continuous acquisition device, acquisition method and analysis method

The invention discloses a cylindrical surface information continuous acquisition device, acquisition method and analysis method, the device comprises a detection unit and a control processing unit, in the detection unit, a horizontal positioning rod and vertical positioning rods at two sides enclose a clamping space for a rod piece to be detected; the vertical measuring assembly is installed on the horizontal positioning rod and comprises a vertical direction measuring sensor and a first roller used for being in rolling connection with the outer circle face of the top of the to-be-measured rod piece. The horizontal measurement assembly is installed at the lower end of the vertical positioning rod, and comprises a horizontal direction measurement sensor and a second roller which is used for rolling connection with the outer circular surface of the side part of the to-be-measured rod piece. The detection unit is installed on the outer side of the upper portion of a to-be-detected rod piece so that the detection