Multi-line lidar and control method of multi-line lidar

Abstract

The invention belongs to the technical field of photoelectric detection, and discloses multi-line lidar and a control method of the multi-line lidar. The multi-line lidar includes laser emitting ends,laser receiving ends, a motor, an angle encoder and a main control piece. The laser emitting ends realize emitting of laser light beams. The laser receiving ends realize receiving of reflection signals. The number of the laser emitting ends is at least two. The number of the laser receiving ends is at least two. The laser emitting ends and the laser receiving ends are all arranged in a dislocation distribution manner. The motor is used to generate driving torque, and thus drive the laser emitting ends and the laser receiving ends to generate synchronous rotation. The angle encoder is adaptedto motor rotation parameters, converts rotation angles, which are formed by motor driving, into electrical signals, and feeds back the same to the main control piece to precisely control a rotation angle of the multi-line lidar. On the basis of motor-driven rotation and dislocation distribution of the laser emitting ends, the number of light beams emitted by the multi-line lidar is effectively increased, and thus an effect of improving vertical angle resolution is achieved.

Description

technical field [0001] The invention belongs to the technical field of photoelectric detection, and in particular relates to a multi-line laser radar and a control method for the multi-line laser radar. Background technique [0002] Lidar is a radar system that emits laser beams to detect the target's position, speed and other characteristic quantities; its working principle is to first emit a detection laser beam to the target, and then compare the received signal reflected from the target with the transmitted signal After proper algorithm processing, the relevant information of the target can be obtained, such as target distance, shape, orientation, height, speed, attitude and other information [0003] Multi-line lidar includes multiple laser transmitters, which can emit multiple laser beams at the same time. In theory, the more laser beams emitted by multi-line lidar, the finer the scanning of the surrounding environment and the faster the scanning speed. Point cloud Th...

AI Technical Summary

Problems solved by technology

[0003] Multi-line lidar includes multiple laser transmitters, which can emit multiple laser beams at the same time. In theory, the more laser beams emitted by multi-line lidar, the finer the scanning of the surrounding environment and the faster the scanning speed. Point cloud The faster the speed is updated, but the multi-line lidar is limited by the height of the components and cannot be made very small, so it is impossible to increase the line bundles per unit height infinitely, so that higher vertical resolution cannot be obtained.

[0004] In summary, the multi-line lidar in the prior art has a large volume and low vertical resolution

Images