Three-dimensional laser scanning device

Abstract

The invention relates to the field of laser scanning, and particularly provides a three-dimensional laser scanning device which comprises a rotation module, a fixed module and a laser generation unit, wherein the rotation module is arranged on the fixed module in a rotating manner, and comprises a laser transmission assembly, a laser receiving assembly and a data processing assembly. According to the three-dimensional laser scanning device, laser is generated by the laser generation unit, is shaped into linear laser with a field angle by the laser transmission assembly, and is projected into the space of an object; the linear laser reflected by the object is received by the laser receiving assembly, and is subjected to photoelectric conversion to obtain an electric signal; and the electric signal is processed by the data processing assembly to obtain spatial three-dimensional data of the target object. The target object is scanned by linear laser in a rotating manner, so that the scanning efficiency of the three-dimensional laser scanning device is improved. The three-dimensional laser scanning device is simple in structure, easy to mount and low in price.

Description

technical field [0001] The invention relates to the field of laser scanning, in particular to a three-dimensional laser scanning device. Background technique [0002] A 3D laser scanner is a device that uses laser light for non-contact measurement and extracts spatial three-dimensional (3D) data of an object in a short time. The 3D data collected by the 3D laser scanner is composed of points, and the complete 3D model data can be obtained by solving the point cloud data through software. The use of 3D laser scanners to obtain 3D data information in the external space and use it as the underlying data for further development is becoming more and more extensive. Existing 3D laser scanners mainly include: (1) The laser emitting module adopts single-point laser emission, and the laser receiving module adopts single-point reception. 3D point cloud data in . For example, Chinese patent CN201280010933.8; (2) The laser emitting module adopts multi-element laser emission, and the ...

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Problems solved by technology

In addition, when this method is assembled and debugged in the later stage, the transmitting unit and the receiving unit need to be adjusted on the same optical axis so that each transmitting unit corresponds to the receiving unit one by one. Therefore, the more lines there are, the more difficult it is to assemble and debug.

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