Multi-line lidar device

A radar equipment, multi-line laser technology, applied in the field of lidar, can solve the problems of low adaptability and limited detection accuracy, and achieve the effect of improving accuracy, improving adaptability, and reducing system blind spots

Pending Publication Date: 2022-03-01
WUHAN WANJI INFORMATION TECH
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Problems solved by technology

[0004] The purpose of the present invention is to provide a multi-line laser radar device, which aims to solve the problems of low adaptability and limited detection accuracy of traditional laser radar

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Embodiment Construction

[0038] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0040] The first aspect of the embodiments of the present invention provides a multi-line laser radar d...

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Abstract

A multi-line laser radar device provided by the present invention comprises a laser emission circuit, a laser receiving circuit and a controller, the laser receiving circuit comprises a multiplexing circuit, a multistage amplification circuit and a plurality of laser receiving assemblies, the laser receiving assemblies convert received optical signals into echo signals, and the echo signals are output through the same channel of the multiplexing circuit. The multi-stage amplification circuit realizes different stages of signal amplification functions, and the controller can determine an effective feedback signal according to the power of a received echo signal and determine a detection distance according to the effective feedback signal, so that the dynamic application range of the multi-stage amplification circuit is expanded, the blind area of the system is reduced, and the accuracy of the detection distance is improved. And the adaptability of the multi-line laser radar equipment is improved.

Description

technical field [0001] The invention belongs to the technical field of laser radar, and in particular relates to a multi-line laser radar device. Background technique [0002] With the increasing development of artificial intelligence and unmanned driving, the requirements for the detection accuracy and detection distance of lidar are also increasing. [0003] Among them, in order to increase the detection distance of the laser radar, the peak power of the laser can be increased. With the increase of the peak power, the saturation area of ​​the nearby received signal becomes larger, the blind area of ​​the field of view increases, the adaptability is low, and the detection accuracy is limited. Contents of the invention [0004] The purpose of the present invention is to provide a multi-line laser radar device, aiming to solve the problems of low adaptability and limited detection accuracy of traditional laser radar. [0005] The first aspect of the embodiments of the pres...

Claims

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Application Information

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IPC IPC(8): G01S17/06G01S7/481
CPCG01S17/06G01S7/481
Inventor 黄玲玲潘奇胡攀攀
Owner WUHAN WANJI INFORMATION TECH
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