The invention discloses a
transformer substation
civil engineering surveying and mapping
data processing method and
system based on multi-
source data, and the method comprises the steps: obtaining three-dimensional
point cloud data of a
transformer substation, importing
beam column coordinates and equipment basic parameters in a BIM design model, and building an initial space reference coordinate
system; performing coarse registration of the actually measured
point cloud and the BIM model by adopting an iterative
nearest point algorithm, and correcting a registration error by introducing a ground
control point coordinate; constructing a three-dimensional
difference analysis layer, automatically marking a deviation region, exceeding a preset deviation value, between the actually measured
point cloud and the BIM model, and generating alarm data including coordinate positions and the deviation value; performing deformation trend
verification on the deviation area based on
monitoring data of the
optical fiber sensor, and triggering
model reconstruction when the change rate of continuous three times of sampling data is greater than 1mm / h; and outputting a three-dimensional
visualization report integrating the BIM model, the actual
measurement point cloud and the deviation area. The problem that early deformation of a
civil engineering structure cannot be captured according to
civil engineering surveying and mapping data of a
transformer substation in the prior art is solved.