Three-dimensional laser scanning device with adjustable visual field and area resolution

Abstract

The invention discloses a three-dimensional laser scanning device with adjustable visual field and area resolution. The three-dimensional laser scanning device comprises a two-dimensional laser scanner, a scanner fixing bracket, a U-shaped rotating frame, a sliding block, an L-shaped bracket, a piston rod, a hinge, a motor and a motor rotating arm. The two-dimensional laser scanner is mounted on the scanner fixing bracket and the U-shaped rotating frame. The bottom of the scanner fixing bracket is connected with a rotating shaft of the motor through the piston rod, and the hinge and the motor rotating arm, so that an included angle is formed by a scanning plane and the horizontal plane of the two-dimensional laser scanner, and the two-dimensional laser scanner linearly rotates around the rotating shaft of the motor under the drive of the motor. With the adoption of the manner, the maximum value and the minimum value of the scanning resolution cannot be limited within a certain area at a position in the view field. The resolutions of a horizontal component and a vertical component in the view field are adjusted simultaneously by adjusting a rotating speed of an additional motor. Furthermore, even if the motor rotates at a constant speed without controlling the rotating speed of the motor, the view field angle and the resolution are adjusted by adjusting the height of the sliding block.

Description

technical field [0001] The invention belongs to the technical field of three-dimensional information, in particular to a three-dimensional laser scanning device with adjustable visual field and area resolution. Background technique [0002] There are two main types of three-dimensional scanning devices for single-point laser lines in the prior art: one is to fix the two-dimensional laser scanner on a horizontal shaft, and use a motor to make the scanner and its two-dimensional scanning plane swing around the horizontal shaft. In this way, the scanning of the three-dimensional environment is realized. If it is necessary to increase the resolution of a specific area, then reduce the motor speed when the two-dimensional scanning plane of the two-dimensional laser scanner swings to this area, thereby increasing the scanning time of this area, thereby improving the resolution; if it is necessary to reduce If the resolution of a specific area is high, the motor speed when sca...

AI Technical Summary

Problems solved by technology

[0006] In order to artificially adjust the resolution when the additional motor rotates at a constant speed, and overcome the inability to adjust the resolution of the horizontal and vertical components at the same time in the prior art and the inability to arbitrarily set the position of the maximum value of the resolution in the field of view etc., the present invention provides a three-dimensional laser scanning device with adjustable field of view and area resolution

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