Hydraulic engineering displacement data acquisition device and acquisition method thereof

The invention discloses a hydraulic engineering displacement data acquisition device and an acquisition method thereof, and relates to the technical field of displacement data acquisition, the hydraulic engineering displacement data acquisition device comprises a bottom plate, a fixed disc is arranged right above the bottom plate, a supporting plate is arranged above the fixed disc, four rectangular sliding holes are formed in the top surface of the fixed disc, and T-shaped sliding plates are inserted into the rectangular sliding holes; the top ends of the T-shaped sliding plates are fixedly connected with the bottom face of the supporting plate, and the bottom plate is connected with the four T-shaped sliding plates through a swing arm mechanism. Four U-shaped steel channels are fixedly arranged on the top face of the supporting plate, rectangular sliding plates are clamped in the U-shaped steel channels, and the supporting plate is connected with the four rectangular sliding plates through a limiting mechan