Galvanometer panoramic scanning device and scanning method thereof

Abstract

The invention provides a galvanometer panoramic scanning device and a scanning method thereof. The galvanometer panoramic scanning device comprises a control and processing module as well as a laser emitting module, a scanning module and a laser receiving module which are connected with the control and processing module; the laser emitting module comprises a laser and a collimator lens group, wherein the collimating lens collimates a detection laser beam emitted by the laser and sends out the collimated detection laser beam; the scanning module comprises a galvanometer and a first reflector, wherein the galvanometer sends the collimated detection laser beam to the first reflector in a deflecting manner, and the first reflector reflects the detection laser beam to a target object; the laser receiving module includes a receiving telescope and a light detector, wherein the receiving telescope receives laser echoes which are reflected or diffusely reflected by the surface of the target object; and the control and processing module controls and senses the working states of the laser, the galvanometer and the light detector and performs data processing analysis. The installation adjustment difficult of the galvanometer panoramic scanning device of the invention is low, a user does not need to adjust a plurality of distance measurement systems one by one; the frequency of the galvanometer is higher than the frequency of a mechanical rotating component, so that the scanning speed of the galvanometer panoramic scanning device is faster.

Description

Technical field [0001] The invention relates to the field of laser radar, in particular to a galvanometer panoramic scanning device and a scanning method thereof. Background technique [0002] In recent years, with the development of artificial intelligence, the rise of autonomous driving and assisted driving has promoted the application of lidar in the civil field. [0003] From the perspective of technical principles, there are two main types of scanning lidars used for civil use: the first is that multiple lasers are rotated side by side by 360° around the axis, and each laser scans a plane; the second is solid-state lidar, which uses optics The phased array scanning method scans the target; the first mechanical rotary scanning lidar is a combination of multiple single-point ranging systems and then rotates around the mechanical axis to achieve three-dimensional panoramic scanning; and the second solid-state lidar technology The scanning angle of the existing optical phased arr...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a new laser radar in order to overcome the problems of fixed scanning angle, low scanning speed, and heavy installation and adjustment workload of the existing mechanically rotating laser radar.

Images