Solid-state two-dimensional scanning laser radar and scanning method thereof

Abstract

The invention discloses a solid-state two-dimensional scanning laser radar and a scanning method thereof. The solid-state two-dimensional scanning laser radar comprises a control processing module and also comprises a laser transmitting module and a laser receiving module connected to the control processing module. The laser transmitting module includes a laser, a collimating lens and a vibrating lens. The collimating mirror collimates a detection laser beam emitted by the laser to the vibrating lens, and the detection laser beam is transmitted in different angles by the vibrating lens. The laser receiving module comprises a first mirror, the vibrating lens, a receiving telescope and a light detector, laser echo reflected from the surface of a target object is reflected to the vibrating lens through the first mirror and then is emitted to the receiving telescope in a fixed direction. The control processing module controls and perceives the working states of the laser, the vibrating lens and the light detector and carries out data processing and analysis. The MEMS vibrating lens is used as a scanning device and also is used as a receiving device, the structure is simplified, the cost is reduced, and the synchronization of the attitudes of the scanning device and the receiving device is not needed.

Description

technical field [0001] The invention relates to the field of laser radar, in particular to a solid-state two-dimensional scanning laser radar and a scanning method thereof. Background technique [0002] Lidar is a radar system that emits laser beams to detect the position, speed, angular position and other characteristic quantities of target objects. Its working principle is to emit laser beams to target objects, and then receive the laser echoes reflected from the target objects and After comparing and processing with the emission information, the relevant information of the target object is obtained, such as the distance information of the target object and the angle information of the target object, so as to detect, track and identify the target object. [0003] In the scanning method of laser radar, the existing laser radar needs to use mechanical rotating parts to realize scanning. Due to factors such as structure and process limitations, the laser radar using mechanica...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a new laser radar in order to overcome the problems of the existing mechanically rotating laser radar, such as large volume, low scanning speed, and sensitivity to its own movement.

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