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Laser radar, autonomous mobile robot and intelligent vehicle

A technology of lidar and laser beam, applied in the field of detection, can solve problems such as high cost and complex manufacturing process

Pending Publication Date: 2020-01-07
SUZHOU LEIZHI SENSOR TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the common short-range lidars on the market are assembled and manufactured by discrete optoelectronic components, such as discrete laser sources, photodetectors, signal processing circuits, etc., which have problems such as high cost and complicated manufacturing process.

Method used

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  • Laser radar, autonomous mobile robot and intelligent vehicle
  • Laser radar, autonomous mobile robot and intelligent vehicle
  • Laser radar, autonomous mobile robot and intelligent vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040]An embodiment of the present invention provides a laser radar, including a ranging unit; the ranging unit includes a photoelectric proximity sensor chip and a collimating and focusing element, and the collimating and focusing element is arranged in the ranging optical path of the ranging unit; wherein, the ranging The optical path includes an emitting optical path between the emitting window of the photoelectric proximity sensor chip and the object to be measured, and a receiving optical path between the object to be measured and the receiving window of the photoelectric proximity sensor chip. The working principle of the laser radar is as follows: the distance measuring unit emits a laser beam through the emission window, and the laser beam is collimated or focused by the collimating and focusing element and reflected by the object to be measured, and then received by the receiving window to realize the distance measurement of the object to be measured .

[0041] Specif...

Embodiment 2

[0068] An embodiment of the present invention provides an autonomous mobile robot, including the laser radar in the first embodiment above. Specifically, the autonomous mobile robot may be, but not limited to, a sweeping robot. The lidar can be used for local landmark detection and map matching of autonomous mobile robots, establishment of terrain maps during travel, and obstacle detection.

[0069] In the embodiment of the present invention, the laser radar includes a ranging unit; the ranging unit includes a photoelectric proximity sensor chip and a collimating and focusing element, and the collimating and focusing element is arranged in the ranging optical path of the ranging unit; wherein, the ranging optical path includes a photoelectric The emitting optical path between the emitting window of the type proximity sensor chip and the object to be measured and the receiving optical path between the object to be measured and the receiving window of the photoelectric proximity...

Embodiment 3

[0071] An embodiment of the present invention provides a smart vehicle, including the laser radar in the first embodiment above. The lidar can be used for local road sign detection and map matching of intelligent vehicles, establishment of traveling topographic maps, obstacle detection, side-view or rear-view ranging sensing, high-precision gesture recognition, etc. for automatic car parking systems.

[0072] In the embodiment of the present invention, the laser radar includes a ranging unit; the ranging unit includes a photoelectric proximity sensor chip and a collimating and focusing element, and the collimating and focusing element is arranged in the ranging optical path of the ranging unit; wherein, the ranging optical path includes a photoelectric The emitting optical path between the emitting window of the type proximity sensor chip and the object to be measured and the receiving optical path between the object to be measured and the receiving window of the photoelectric ...

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Abstract

The invention provides a laser radar, an autonomous mobile robot and an intelligent vehicle, and relates to the technical field of detection. The laser radar comprises a ranging unit; the ranging unitcomprises a photoelectric proximity sensor chip and a collimation focusing element, and the collimation focusing element is arranged in a ranging light path of the ranging unit; the ranging light path comprises an emitting light path between an emitting window of the photoelectric proximity sensor chip and an object to be measured and a receiving light path between the object to be measured and areceiving window of the photoelectric proximity sensor chip; the ranging unit emits laser beams through the emitting window, and the laser beams are received by the receiving window after being collimated or focused by the collimation focusing element and reflected by the object to be measured so as to realize the distance measurement of the object to be measured. Therefore, the angle resolutionin the distance measurement is improved by focusing a detection laser beam through the collimation focusing element; and by adopting the mass-produced highly integrated photoelectric proximity sensorchip, the cost and the manufacturing difficulty of the laser radar are reduced.

Description

technical field [0001] The invention relates to the technical field of detection, in particular to a laser radar, an autonomous mobile robot and an intelligent vehicle. Background technique [0002] For low-cost distance sensors with a relatively short measurement range (for example, within a few meters), common solutions include ultrasonic distance measurement and infrared LED (Light Emitting Diode, light emitting diode) triangulation distance measurement. Ultrasonic ranging is by measuring the time required for the ultrasonic pulse to return after being reflected by the target to be measured, and the measured distance is calculated by using the air speed of sound. Ultrasonic distance sensors are cheap, reliable, and mature in technology. However, limited by the physical characteristics of ultrasound, the sampling rate it can provide is slow, and the angular resolution is extremely low. The measurement results obtained cannot be used for point cloud imaging and subsequent i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/08G01S7/481
CPCG01S17/08G01S7/4817
Inventor 梁伟杨昆云
Owner SUZHOU LEIZHI SENSOR TECH CO LTD
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