The invention discloses an automatic-tracking type
landslide displacement measurer with high accuracy and a wide range, comprising an
infrared displacement sensing device, a
stepper motor tracking device and a
data collecting and
processing system, wherein the
infrared displacement sensing device comprises a guide wheel, a traction steel wire, a light-stopping sheet, a light-shielding fixed box, an
infrared transmitting tube, a light-through hole, an infrared receiving tube, an upper
pulley, a base plate, a lower
pulley, a spring and a box body, wherein the traction steel wire is fixedly connected with the middle of the light-stopping sheet; the infrared receiving tube over against the infrared transmitting tube via the light-through hole in the light-stopping sheet; the light-shielding fixed box is installed on the
stepper motor tracking device; the light-shielding fixed box horizontally moves along with the movement of a
stepper motor; and the
data collecting and
processing system in a control box is electrically connected with the
stepper motor tracking device, the infrared transmitting tube and the infrared receiving tube. The automatic-tracking type
landslide displacement measurer disclosed by the invention is simple in structure, good in stability, wide in range, high in accuracy, and capable of performing automatic tracking and real-time monitoring under the condition of a
landslide displacement according to a preset measurement mode.