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CN-121982193-A - Large-diameter pipeline space modeling method based on total station three-dimensional scanning

CN121982193ACN 121982193 ACN121982193 ACN 121982193ACN-121982193-A

Abstract

The invention relates to a large-diameter pipeline space modeling method based on total station three-dimensional scanning, which comprises the steps of erecting a total station at a preset position to enable the total station to scan target pipelines with different angles, planning a scanning path according to the distribution range and the shape of the pipelines, scanning the target pipelines according to the planned scanning path to obtain scanning points, calculating three-dimensional coordinates of each scanning point under the total station coordinate system, converting the coordinates under the total station coordinate system into coordinates under a unified coordinate system of engineering practical application through a coordinate conversion algorithm to obtain processed coordinate data, and importing the processed coordinate data into a three-dimensional modeling tool to complete construction of a pipeline three-dimensional model. According to the invention, through high-precision measurement of the total station and a precise coordinate calculation and error correction method, the coordinates of each point position of the pipeline can be accurately obtained, the measurement precision of the spatial position information of the pipeline is greatly improved, and a reliable data base is provided for subsequent modeling and drawing.

Inventors

  • CHEN LIN
  • LI ZHANXU
  • WANG XIAONAN
  • TIAN FEI
  • LI JIANQIANG
  • YANG YI
  • GUAN XUDONG

Assignees

  • 包头钢铁（集团）有限责任公司

Dates

Publication Date
20260505
Application Date
20251217

Claims (6)

  1. 1. The large-diameter pipeline space modeling method based on total station three-dimensional scanning is characterized by comprising the following steps of: Step 1, erecting a total station at a preset position, so that the total station scans target pipelines with different angles; step 2, planning a scanning path according to the distribution range and the shape of the pipeline; step 3, scanning the target pipeline according to the planned scanning path to obtain scanning points; Calculating three-dimensional coordinates of each scanning point under the total station coordinate system, and converting the coordinates under the total station coordinate system into coordinates under a unified coordinate system of engineering practical application through a coordinate conversion algorithm to obtain processed coordinate data; And 5, importing the processed coordinate data into a three-dimensional modeling tool to complete the construction of the three-dimensional model of the pipeline.
  2. 2. The method for modeling a large-diameter pipeline space based on three-dimensional scanning of a total station according to claim 1, wherein in step 2, a scanning path is planned by adopting a mode of combining continuous scanning and sectional scanning, the continuous scanning is performed on a straight-line pipeline, and the sectional scanning is performed on a curved-section pipeline and a branched-section pipeline.
  3. 3. The method for modeling a large-diameter pipeline space based on three-dimensional scanning of a total station according to claim 2, wherein continuous scanning is performed at a scanning point of every 0.5 m for a straight pipeline and segmented scanning is performed at 0.1-0.2 m for a pipeline of a bending section and a branching section.
  4. 4. The large-diameter pipeline spatial modeling method based on total station three-dimensional scanning according to claim 1, wherein in step 4, three-dimensional coordinates of each scanning point in a total station coordinate system are calculated by using a triangulation formula, wherein the triangulation formula is: X1=X0+S×cos(H) Y1=Y0+S×sin(H) Z1=Z0+S×tan(V)+i-r wherein, (X1, Y1, Z1) is the three-dimensional coordinate of the scanning point under the total station coordinate system, (X0, Y0, Z0) is the original scanning point coordinate, S is the slant distance, V is the vertical angle, H is the horizontal angle, i is the instrument height, and r is the prism height.
  5. 5. The large-diameter pipeline spatial modeling method based on total station three-dimensional scanning according to claim 1, wherein in step 4, a least square fitting algorithm is adopted to correct errors of the processed coordinates.
  6. 6. The method for modeling large-diameter pipeline space based on total station three-dimensional scanning according to claim 1, wherein in step 5, a model drawing of four view directions of a front view, a top view, a side view and an axonometric view is generated by utilizing a pipeline three-dimensional model, and in each view, the pipeline model is marked with dimensions, wherein the dimension marking content comprises the length, the pipe diameter and the elbow angle of the pipeline.

Description

Large-diameter pipeline space modeling method based on total station three-dimensional scanning Technical Field The invention relates to the technical field of engineering measurement and modeling drawing, in particular to a large-diameter pipeline space modeling method based on total station three-dimensional scanning. Background At present, in the construction and maintenance of pipeline engineering and the management of related industrial facilities, it is important to accurately acquire the spatial position information of a pipeline and draw detailed drawings. Traditional pipeline measurement and drawing modes often have the problems of low measurement precision and poor efficiency for complex pipelines with different angles. The manual measurement not only consumes a great deal of manpower and time, but also is difficult to accurately acquire the accurate coordinates of the pipeline in space, so that the generated drawing has deviation from the actual pipeline condition, and the subsequent engineering design, construction and maintenance work are affected. Disclosure of Invention In order to solve the problems, an object of an embodiment of the present invention is to provide a large-diameter pipeline spatial modeling method based on total station three-dimensional scanning. A large-diameter pipeline space modeling method based on total station three-dimensional scanning comprises the following steps: Step 1, erecting a total station at a preset position, so that the total station scans target pipelines with different angles; step 2, planning a scanning path according to the distribution range and the shape of the pipeline; step 3, scanning the target pipeline according to the planned scanning path to obtain scanning points; Calculating three-dimensional coordinates of each scanning point under the total station coordinate system, and converting the coordinates under the total station coordinate system into coordinates under a unified coordinate system of engineering practical application through a coordinate conversion algorithm to obtain processed coordinate data; And 5, importing the processed coordinate data into a three-dimensional modeling tool to complete the construction of the three-dimensional model of the pipeline. Preferably, in step 2, a scan path is planned by combining continuous scanning and sectional scanning, the continuous scanning is performed for the straight-line segment pipeline, and the sectional scanning is performed for the curved segment and the branch segment pipeline. Preferably, the continuous scanning is performed at a scanning point of every 0.5 m for straight-line section pipelines, and the sectional scanning is performed at 0.1-0.2 m for curved section and branched section pipelines. Preferably, in step 4, three-dimensional coordinates of each scanning point in the total station coordinate system are calculated by using a triangulation formula, wherein the triangulation formula is as follows: X1=X0+S×cos(H) Y1=Y0+S×sin(H) Z1=Z0+S×tan(V)+i-r wherein, (X1, Y1, Z1) is the three-dimensional coordinate of the scanning point under the total station coordinate system, (X0, Y0, Z0) is the original scanning point coordinate, S is the slant distance, V is the vertical angle, H is the horizontal angle, i is the instrument height, and r is the prism height. Preferably, in step 4, a least square fitting algorithm is used to correct errors in the processed coordinates. Preferably, in step 5, a model drawing in four view directions of a front view, a top view, a side view and an axonometric view is generated by using the pipeline three-dimensional model, and in each view, the pipeline model is subjected to dimension marking, wherein the dimension marking comprises the length, the pipe diameter and the elbow angle of the pipeline. According to the specific embodiment provided by the invention, the invention discloses the following technical effects: Compared with the prior art, the method can accurately acquire the coordinates of each point position of the pipeline through the high-precision measurement of the total station and the strict coordinate calculation and error correction method, greatly improves the measurement precision of the spatial position information of the pipeline, and provides a reliable data basis for subsequent modeling and drawing. In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below. Drawings In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled