Laser radar detection system and laser radar detection method

Abstract

The invention provides a laser radar detection system and a laser radar detection method. The laser radar detection system comprises a scanning unit and a receiving unit, the scanning element comprises a light source and a first reflection element. Light beams emitted by the light source, the first reflecting element is arranged on the emergent side of the light source; the first reflecting element is driven to rotationally reflect the light beam projected by the light source to a target area; the light beam is projected to the target area and moves in the target region as the first reflectiveelement rotates so as to scan the target area, and after the scanning unit emits a light beam to the target area, the receiving unit is used for receiving the light beam which is reflected by the target area after the scanning unit emits the light beam to the target area and detecting the target area.

Description

technical field [0001] The invention relates to the field of optics, in particular to a laser radar detection system and a laser radar detection method. Background technique [0002] The laser radar system emits laser light to the target area through the laser, and the target area reflects the light beam for the detector to receive. The light beam reflected by the target area carries image information, and the detector receives the light beam and information to realize the detection of the target area. [0003] Compared with the single-line radar, the multi-line lidar system can obtain more information, detect a wider range, and have higher accuracy. [0004] Such as Figure 1A Shown is an existing multi-line laser radar system, the multi-line laser radar system includes a scanning unit 10P and a receiving unit 20P, the scanning unit 10P includes a laser 11P, and the laser 11P emits a beam. The multi-line laser radar system also includes a base 30P and a rotating mechanism...

AI Technical Summary

Problems solved by technology

Therefore, the assembly and adjustment of each component is difficult. The scanning element 10P and the receiving unit 20P need to rotate together, and the volume cannot be controlled. It is necessary to ensure a certain volume so as not to affect the detection.

However, the scanning element 10P and the receiving unit 20P rotate together, which puts a heavy load on the rotating mechanism 40P, resulting in greater power consumption.

The height of the transmitter module is limited by the height of the components and cannot be made very small, and it is difficult to increase the number of lines per unit height, so it is difficult to obtain a higher vertical resolution

[0009] The multi-line laser radar detection system with a large volume cannot be well adapted to the small space constraints of vehicles, and there are many rotating parts, and the stability will also be affected when it is applied on vehicles

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