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Laser radar system

A laser radar and laser beam technology, applied in radio wave measurement systems, instruments, etc., can solve the problems of laser radar life limit, complex wireless power supply module, low power supply efficiency, etc., achieve high signal-to-noise ratio, and less difficult to process and assemble , power consumption and low cost effect

Pending Publication Date: 2021-06-25
觉芯电子(无锡)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to solve the problem of power supply and signal transmission, some systems use wireless power supply and signal transmission. This kind of power supply efficiency is low, and the wireless power supply module is more complicated, which increases the cost; LiDAR has a limited lifespan

Method used

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  • Laser radar system

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Embodiment Construction

[0033] 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.

[0034] 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, and the system comprises a laser transmitting module which is used for transmitting a detection laser beam; a first reflection unit which is used for receiving and changing the transmission direction of the detection laser beam emitted by the laser emission module; a second reflection unit which is used for reflecting the detection laser beam reflected by the first reflection unit to a to-be-detected target and receiving and reflecting an echo signal reflected by the to-be-detected target; a laser receiving module which is used for receiving and processing the echo signal transmitted by the second reflecting unit, wherein the first reflection unit is located between the second reflection unit and the laser receiving module, and the effective reflection area of the first reflection unit is smaller than that of the second reflection unit. According to the invention, the defect that a non-coaxial laser radar has a close-range optical detection blind area is overcome, and a relatively high signal-to-noise ratio during close-range detection can be ensured.

Description

technical field [0001] The invention relates to the technical field of laser radar, in particular to a laser radar system. Background technique [0002] Lidar is an active detection system. Its working principle is to actively transmit laser signals to the target to be measured, and receive the laser signal reflected by the target. By comparing and analyzing the characteristics of the transmitted and received signals, the information of the target to be measured is obtained. . [0003] At present, many lidars are based on the pulse time-of-flight (PTOF) ranging principle to detect the distance and contour of the target. Due to the problems of optical path and system structure design, many 2D or 3D lidar systems based on the PTOF principle have problems such as large short-range blind spots, power supply and signal transmission through cables, etc. In order to reduce short-range blind spots, some systems solve the problem by adding compensation mirrors. The compensation mir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/481G01S7/48
CPCG01S7/481G01S7/4802
Inventor 马宏
Owner 觉芯电子(无锡)有限公司
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