A laser radar system

A technology of laser radar and laser beam, applied in the field of environmental perception, to achieve the effect of increasing the scanning field of view, reducing interference, and ensuring the ability of long-distance measurement

Active Publication Date: 2022-04-01
HESAI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing laser radar system is difficult to achieve a balance between small size and multiple performance parameters. How to reasonably arrange the internal space of the laser radar system to improve space utilization and make its structure More compactness and improved heat dissipation performance are still areas in urgent need of improvement

Method used

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  • A laser radar system
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Embodiment Construction

[0070] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0071] Reference herein to "one embodiment" or "an embodiment" refers to a particular feature, structure or characteristic that can be included in at least one implementation of the present invention. In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "top", "bottom" etc. is based on the orientation or positional relationship shown in the drawings, and i...

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Abstract

The invention provides a laser radar system, comprising at least one transceiver module, used to transmit detection optical signals and receive echo signals reflected by the target to be measured; The beam is reflected to the three-dimensional space, and is used to reflect the echo signal to the corresponding transceiver module; at least one scanning module is located on one side of at least one transceiver module, and the transceiver module includes a transmitting module, and the transmitting module has a plurality of first light sources arranged at intervals , the plurality of first light sources sequentially emit pulsed laser beams according to a preset time sequence. Each transmitting module of the laser radar system of the invention includes a plurality of light sources arranged at intervals in the vertical direction, which effectively improves the scanning trajectory line density of the vertical field of view, and multiple light sources are transmitted at time-sharing intervals, which effectively reduces the cost of the receiving optical path. interference.

Description

technical field [0001] The invention relates to the technical field of environment perception, in particular to a laser radar system. Background technique [0002] In the autonomous driving technology, the environmental perception system is a basic and crucial part, and it is the guarantee of the safety and intelligence of the autonomous driving vehicle. The lidar in the environmental perception sensor has great advantages in terms of reliability, detection range, and ranging accuracy. Incomparable advantages. [0003] As an important sensor for perceiving surrounding information, vehicle-mounted lidar has field of view and scanning accuracy as its important parameters. For the vertical field of view, the greater the density of scanning trajectory lines in the vertical direction, the higher the scanning resolution and the richer the information, which is more conducive to automatic driving decision-making. For laser radars that use scanning methods such as galvanometers, t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/481
CPCG01S17/931G01S7/4817G01S7/483
Inventor 申士林向少卿
Owner HESAI TECH CO LTD
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