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Three-dimensional laser scanner positioning device and laser point cloud absolute positioning method

A three-dimensional laser and positioning device technology, applied in the direction of using optical devices, measuring devices, instruments, etc., can solve the problems of limited number of scanning stations, time-consuming and labor-intensive, increased splicing time, etc., to achieve convenient automatic matching and calculation, and easy to use. , accurate positioning and fast effect

Active Publication Date: 2014-07-09
南京数联空间测绘科技有限公司
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Problems solved by technology

The disadvantage of this method is that the splicing and coordinate transformation are divided into two steps, which is time-consuming and labor-intensive.
Another big disadvantage of this method is that a computer with a large memory and CPU processing power is required for overall point cloud stitching, and as the number of scanning stations increases, the stitching time will continue to increase, and the number of scanning stations that can be stitched Quantities are absolutely bound by processing computer performance

Method used

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  • Three-dimensional laser scanner positioning device and laser point cloud absolute positioning method
  • Three-dimensional laser scanner positioning device and laser point cloud absolute positioning method
  • Three-dimensional laser scanner positioning device and laser point cloud absolute positioning method

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Embodiment

[0053] In September 2012, on the eve of the upcoming operation of Hangzhou Metro Line 1, in the tunnel section near Hangzhou East Railway Station, water seepage was found from cracks in the segment, and the leakage continued after repeated repairs. The engineering consultant needed to investigate the deformation of the overall segment to judge What factors caused the pipe ring to break. Therefore, for the first time, a total of 3 tunnels with a total length of 450 meters were required to conduct a comprehensive three-dimensional laser scan at a distance of 75 meters before and after the cracked pipe ring observed by the naked eye. Using the positioning method provided by the present invention, it took only 2.5 hours for 3 people to complete the comprehensive three-dimensional laser scanning detection of three tunnels with a total length of 450 meters. The distance between the three-dimensional point clouds reached 4mm*4mm; The scope of scanning detection was expanded to center...

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Abstract

The invention discloses a three-dimensional laser scanner positioning device which comprises a three-dimensional laser scanner positioning base and two positioning prisms. The two positioning prisms are arranged on the two sides of the three-dimensional laser scanner positioning base through positioning prism connecting rods respectively, wherein the positioning prism connecting rods are fixed to the three-dimensional laser scanner positioning base, and each positioning prism is arranged at one end of the corresponding positioning prism connecting rod in a screw connection mode. The invention further provides a three-dimensional laser scanner laser point cloud absolute positioning method. According to the three-dimensional laser scanner laser point cloud absolute positioning method, on the premise that position and direction transmission accuracy can be guaranteed, the operational process of field positioning data acquisition is simplified, automatic data matching and calculation can be conducted rapidly and conveniently through software, and splicing and absolute positioning of massive point cloud data obtained by a three-dimensional laser scanner are no longer limited by the performance of a computer. In addition, three-dimensional laser point cloud data consistent with an engineering coordinate system of a user can be directly acquired, so that usage is more convenient, and positioning is more accurate and rapid.

Description

technical field [0001] The invention belongs to the technical field of three-dimensional laser measurement and engineering measurement, and in particular relates to a three-dimensional laser scanner positioning device and a laser point cloud absolute positioning method. Background technique [0002] As a new type of fast, high-precision, high-density measurement technology equipment, the 3D laser scanner has quickly become a high-tech equipment for 3D measurement and detection because it can quickly obtain high-precision, high-density spatial position points on the surface of objects. Compared with the traditional total station, the advantages of this device in application are mainly reflected in the rapid, comprehensive and accurate acquisition of geometric shape information on the surface of complex objects. Unlike the traditional total station and other measurement methods that obtain discrete sampling feature points on the surface of an object at a time, a scanner can ob...

Claims

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Application Information

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IPC IPC(8): G01B11/00
Inventor 尤相骏倪涵
Owner 南京数联空间测绘科技有限公司
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