A three-dimensional laser scanning method and device

Abstract

The invention discloses a three-dimensional laser scanning method and device. The method comprises the following steps that a three-dimensional coordinate system is generated with the central point of laser transmitting in a scanning head as the scanning origin in a vertical scanning surface, azimuth Theta and apex angle Phi of a laser beam transmitted by a ranging sensor are worked out according to azimuth Theta and pitch angle Beta of the scanning head when laser ranging is acquired every time, and a calculation formula of the three-dimensional laser corner coordinate is acquired. The device comprises the scanning head, a shaft driving unit, a ranging unit, a motor driving unit and an embedded control unit. The scanning head comprises a reflector, a bearing, a laser hole and a mechanical bracket. The mechanical bracket comprises a transverse bracket, a longitudinal bracket and a bearing support. The shaft driving unit comprises a bearing direct drive motor, an apex direct drive motor, a bearing driving shaft, an apex driving shaft, a bearing round grating and an apex round grating. The laser ranging unit comprises a one-dimensional laser ranging sensor, an adjustable bracket and a connecting piece. By means of the three-dimensional laser scanning method and device, the measurement accuracy of the three-dimensional scanning is improved, volume of the scanning device is reduced, and the small, exquisite and portable device is achieved.

Description

technical field [0001] The invention belongs to the technical field of laser scanning, and more specifically relates to a three-dimensional laser scanning method and device. Background technique [0002] Three-dimensional laser scanning technology is a high-tech developed in recent years that integrates optical, mechanical, electrical and computer technologies. It can complete and high-precision three-dimensional scanning of the shape and structure of space objects, and quickly obtain the spatial coordinate point set of the surface of the object. . At present, the research on 3D laser scanning technology is being carried out in many developed countries, and many products have been launched, basically forming a situation of industrialization, but the price is expensive. Some domestic scientific research institutions have also launched their own products, most of which are in the existing two On the basis of the three-dimensional laser sensor, a one-dimensional rotating platf...

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Problems solved by technology

[0003] In view of the above defects or improvement needs of the prior art, the present invention provides a three-dimensional laser scanning method, which aims to solve the technical problems of low measurement accuracy of three-dimensional scanning and expensive scanning devices in the prior art

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