Laser radar three-dimensional scanning rotating mirror system

Abstract

The invention provides a laser radar three-dimensional scanning rotating mirror system comprising a pitching motor and an azimuth motor. The pitching motor and the azimuth motor are disposed below a support bottom plate. A pitching mirror carrier, an azimuth mirror carrier, a pitching bevel gear, a transmission bevel gear and an L-shaped bevel gear are disposed above the support bottom plate; the pitching bevel gear is perpendicular to the transmission bevel gear and meshes with the same; the pitching bevel gear is parallelly mounted on the side of a vertical plate of the bevel gear carrier; a first spindle of the pitching mirror carrier penetrates the vertical plate and is fixedly connected with the pitching bevel gear; the transmission bevel gear is parallelly mounted above a transverse plate of the bevel gear carrier; the transmission bevel gear is in transmission connection with the pitching motor; an azimuth mirror is disposed at the upper end of the azimuth mirror carrier; the upper portion of the azimuth mirror carrier is fixedly connected with a side plate of the bevel gear carrier. The laser radar three-dimensional scanning rotating mirror system has the advantages that the size and weight of the system is greatly reduced, hardware cost is saved, and three-dimensional continuous scanning is available.

Description

technical field [0001] The invention relates to the technical field of laser equipment, in particular to a laser radar three-dimensional scanning rotating mirror system. Background technique [0002] Wind lidar detection needs to obtain laser echo signals in multiple directions, which is realized by a three-dimensional scanning mirror installed on the top of the lidar. Traditional radar scanning mirrors are bulky and cumbersome, and cannot be applied to small wind measuring radars. Some of the small coherent wind radars launched on the market in the early stage can only achieve azimuth rotation, but cannot change the pitch angle at the same time, and the other part is just the opposite, that is, they cannot realize vertical and horizontal three-dimensional scanning at the same time. The lidar scanning mirror provided by the prior art is bulky and heavy. Moreover, the driving motor for controlling the pitch, the pitch reducer and the pitch synchronous gear train are all ins...

AI Technical Summary

Problems solved by technology

Traditional radar scanning mirrors are bulky and cumbersome, and cannot be applied to small wind measuring radars

Some of the small coherent wind radars launched on the market in the early stage can only achieve azimuth rotation, but cannot change the elevation angle at the same time, and the other part is just the opposite, that is, it cannot realize vertical and horizontal three-dimensional scanning at the same time

The lidar scanning mirror provided by the prior art is bulky and cumbersome

Moreover, the drive motor for controlling the pitch, the pitch reducer and the pitch synchronous gear train are all installed in the main mirror housing, which has a complex structure and is difficult to manufacture and install. In order to maintain the balance of the pitch rotating mirror, it is necessary to add structural modules on the symmetrical plane

Since both the motor and the reducer need power supply, an electric slip ring (or slip ring) must be used, which increases the hardware cost

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