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Obstacle information acquisition method and laser radar system

A lidar and obstacle technology, applied in the field of environmental perception, can solve the problems of inconvenient adjustment, low data fusion matching, and high implementation cost, achieve low cost, avoid leveling problems, and improve the effect of accuracy

Inactive Publication Date: 2018-03-20
HESAI TECH CO LTD
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AI Technical Summary

Problems solved by technology

This method has a large amount of calculation, and the matching degree of data fusion is low, and the implementation cost is high.
In addition, the combination of lidar and camera system has low integration, inconvenient adjustment, and low reliability.

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  • Obstacle information acquisition method and laser radar system
  • Obstacle information acquisition method and laser radar system
  • Obstacle information acquisition method and laser radar system

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Embodiment Construction

[0026] In the existing product solution, the laser radar and the camera measure the obstacle scene separately, and then the laser point cloud data and the red green blue (Red Green Blue, RGB) color data of the camera are fused through an algorithm. This method has a large amount of calculation, and the matching degree of data fusion is low, and the implementation cost is high. In addition, the combination of lidar and camera system has low integration, inconvenient adjustment, and low reliability.

[0027] An embodiment of the present invention provides a laser radar system. The transmitting module generates and emits laser pulses, and the detection module receives and processes the reflection signals of laser pulses reflected at different positions in space and the reflection signals of visible light beams. Since the detection module can simultaneously receive and Processing laser pulses and reflected signals of visible light beams, and at the same time obtaining one-to-one d...

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Abstract

The invention provides an obstacle information acquisition method and a laser radar system. The laser radar system comprises a transmitting module which is used to generate and transmit a laser pulse,a detecting module which is used to receive and process the reflected signal of the laser pulse transmitted by the transmitting module and the reflected signal of a visible light beam to simultaneously acquire the distance information and color information of the same point of an obstacle. The laser radar system comprises a filtering sub-module and a detecting sub-module. According to the radar system, since the detecting module can receive and process the reflected signals of the laser pulse and the visible light beam at the same time, complicated fusion operation can be eliminated. The distance information and color information of the same point of the obstacle can be reliably acquired at a low cost at the same time.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of environment perception, and in particular, to a method for obtaining obstacle information and a laser radar system. Background technique [0002] With the development of artificial intelligence, autonomous driving technology is also maturing. For autonomous driving, environmental perception is a necessary prerequisite for automatic driving, and obstacle detection is an important part of environmental perception. Common obstacle detection sensors include lidar, camera, millimeter wave radar, ultrasonic sensor, etc. LiDAR measures the distance by measuring the time difference between the emitted laser signal and the laser signal reflected from the surface of the obstacle. It can obtain the distance data of the obstacle and is not easily affected by light, smoke, and the environment. Compared with lidar, the camera can obtain richer color information and has higher concealment, but it...

Claims

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Application Information

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IPC IPC(8): G01S7/481G01S17/93G01S17/931
CPCG01S7/4812G01S17/931
Inventor 吴世祥王瑞张子夏向少卿李一帆
Owner HESAI TECH CO LTD
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