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Laser radar

A technology of laser radar and radar, which is applied in the field of distance measurement, can solve problems such as short service life, inevitable wear and tear, easy friction and heat generation, etc., and achieve the effect of saving space and improving space utilization

Active Publication Date: 2019-05-31
HESAI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantage of this method is that when using slip rings to realize coaxial data transmission, the slip rings inevitably have wear problems, are prone to friction and heat, and have a short service life.
[0006] Moreover, if multiple data lines are to be transmitted, the electromagnetic shielding between the lines needs to be considered, which will make the signal transmission more complicated.

Method used

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  • Laser radar
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Embodiment 1. A laser radar, including a main shaft, a radar rotor and a communication component;

[0068] The main shaft is configured as a hollow structure;

[0069] The communication component includes a first communication module and a second communication module;

[0070] The first communication module is relatively fixed to the radar rotor;

[0071] The second communication module is fixedly arranged relative to the main shaft;

[0072] At least a part of the second communication module is disposed inside the main shaft.

Embodiment 2

[0073] Embodiment 2. The lidar according to embodiment 1, the second communication module includes a second optical fiber, and a part of the second optical fiber is disposed inside the main shaft.

Embodiment 3

[0074] Embodiment 3. According to the laser radar described in embodiment 1 or 2, the first communication module includes a first optical fiber, the first end of the first optical fiber is far away from the upper end of the main shaft, and the first end of the first optical fiber is The second end is adjacent to the upper end of the main shaft. And the end face of the second end of the first optical fiber is opposite to the end face of the first end of the second optical fiber at the upper end of the main shaft.

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Abstract

This application discloses a laser radar. The laser radar of the present invention comprises a main shaft, a radar rotor and a communication assembly; the main shaft is set to be of a hollow structure; the communication assembly comprises a first communication module and a second communication module; the first communication module is fixedly arranged relative to the radar rotor; the second communication module is fixedly disposed relative to the main shaft; and at least a portion of the second communication module is disposed inside the main shaft. The laser radar of the present application has the advantages of decreased size and improved integration.

Description

technical field [0001] This application relates to the field of distance measurement, in particular to a laser radar. Background technique [0002] As an important part of the intelligent vehicle environment perception hardware system, Lidar (LIDAR) undertakes important tasks such as roadside detection, obstacle recognition, and real-time localization and mapping (SLAM) in automatic driving. Under the condition of coaxial rotation, the communication between the device on the radar rotor and other fixed devices mainly has the following channels: [0003] 1. Use slip rings to realize coaxial data transmission. For example, in a mechanical rotating lidar, the stator of the slip ring is connected to the stator of the lidar, and the signal is transmitted to a rotating brush-slip ring connector at the input end, and then the signal is output at the output end of the connector. The rotor of the slip ring is connected to the rotor of the lidar; when rotating, the electrical signal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/93G01S7/481
Inventor 李家盛向少卿
Owner HESAI TECH CO LTD
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