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 that integrates optical, mechanical, electrical and computer technology developed in recent years. It can complete and high-precision three-dimensional scanning of the shape and structure of space objects, and quickly obtain the space coordinate point set of the object surface . At present, the research of 3D laser scanning technology is in-depth in many developed countries, and many products have been launched, basically forming a situation of industrialization, but the price is expensive, and some domestic scientific research institutions have launched their own products. A one-dimensional rotating platform is added to the three-dimensional laser sensor to form a laser radar device that can scan three-dimensionally. F...

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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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