Scanner capable of walking on surface of planar material to scan and extract surface patterns thereof

The invention discloses a scanner capable of walking on the surface of a planar material to scan and extract surface patterns thereof. Rollers are arranged on the front and rear of a scanning machinehead through wheel shafts; two ends of each wheel shaft are in transmission connection through transmission belts; one end of one wheel shaft is in transmission connection with a driving motor througha belt pulley assembly; a reference white strip is arranged on a lower strip of the transmission belt and stretches across the lower portion of a scanning window of the scanning machine head, a metalsheet is arranged at one end of the reference white strip and corresponds to a proximity switch, a white strip limiting block is arranged on the scanning machine head and located on the side portionof the reference white strip, and the driving motor and the proximity switch are in electric control connection with a circuit mainboard arranged in the scanning machine head; a driving motor can drive the rollers to walk on the