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A preparation method of laser retro-reflective unmanned vehicle coating

A retro-reflective and unmanned vehicle technology, applied in the direction of reflective/signal coatings, coatings, and devices for coating liquid on the surface, etc., can solve the problem of weak signal strength of the return receiver, affecting detection accuracy and distance, and high-energy laser damage and other problems, to achieve the effect of simple, convenient, fast and reliable operation, improved accuracy, and good total reflection effect

Active Publication Date: 2021-07-09
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing types of unmanned vehicle signal acquisition devices include electromagnetic wave radar, ultrasonic radar, laser radar, etc. Among them, the laser radar system has attracted widespread attention due to its high efficiency and accuracy. The emitted light energy of the radar is strictly controlled and the optical signal is further attenuated due to the loss during transmission in the air and the scattering on the surface of the detected object, resulting in a weak signal strength that finally returns to the receiver, seriously affecting the detection accuracy and distance
Take the commercially available 64-line laser radar from velodyne company as an example. In order to avoid damage to human eyes, this type of laser radar uses 905nm near-infrared light as the signal source with an output power of 9w. Its effective detection range is 150m, which is far lower than the traditional The detection distance of electromagnetic wave radar seriously hinders its application

Method used

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  • A preparation method of laser retro-reflective unmanned vehicle coating
  • A preparation method of laser retro-reflective unmanned vehicle coating
  • A preparation method of laser retro-reflective unmanned vehicle coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Metal-organic framework (MOF) material preparation: Weigh Cr(NO 3 ) 3 9H 2 O 0.50g and H 2 bdc-NH 2 0.23g\H 2 bdc 0.21g\H 2 bdc-Cl (Aladdin Reagent Co., Ltd.) 0.25g, add 7mL of water, stir to obtain a suspension, then add it into an autoclave lined with Teflon, place it at room temperature for 3h, and then heat it at 130°C under autogenous pressure 24h. After the reaction is over, take out the reaction kettle and allow it to cool naturally to room temperature, then open the reaction kettle, take out the product by centrifugation, repeatedly wash with absolute ethanol for more than 5 times to remove impurities, place the washed product in a nitrogen atmosphere and cool it at room temperature. Drying under conditions for 12h, and finally get the green pure product MIL-101(Cr)-NH 2 , MIL-101(Cr)-H and MIL-101(Cr)-Cl.

[0030] Preparation of coated glass microspheres: MIL-101(Cr)-Cl containing electron-withdrawing side groups was added to acetonitrile to make a sus...

Embodiment 2

[0034] Preparation of metal organic framework materials:

[0035] Metal-organic framework (MOF) material preparation: Weigh Cr(NO 3 ) 3 9H 2 O 0.50g and H 2 bdc0.21g\H 2 bdc-NH 2 0.23g\H 2 0.24g of bdc-CN was added to 7mL of water, stirred to obtain a suspension, then added to a Teflon-lined autoclave, left at room temperature for 3h, and then heated at 130°C for 24h under autogenous pressure. After the reaction is over, take out the reaction kettle and allow it to cool naturally to room temperature, then open the reaction kettle, take out the product by centrifugation, repeatedly wash with absolute ethanol for more than 5 times to remove impurities, place the washed product in a nitrogen atmosphere and cool it at room temperature. Drying for 12 hours under the condition, the green pure products MIL-101(Cr)-H, MIL-101(Cr)-NH are finally obtained 2 and MIL-101(Cr)-CN.

[0036]Preparation of coated glass microspheres 3: MIL-101(Cr)-CN containing electron-withdrawing sid...

Embodiment 3

[0040] Preparation of metal-organic framework materials:

[0041] Metal-organic framework (MOF) material preparation: Weigh Cr(NO 3 ) 3 9H 2 O 0.50g and H 2 bdc0.21g\H 2 bdc-CH 3 0.23g\H 2 0.24 g of bdc-CN was added to 7 mL of water, stirred to obtain a suspension, then added to a Teflon-lined autoclave, left at room temperature for 3 h, and then heated at 130 °C for 24 h under autogenous pressure. After the reaction is over, take out the reaction kettle and allow it to cool naturally to room temperature, then open the reaction kettle, take out the product by centrifugation, repeatedly wash with absolute ethanol for more than 5 times to remove impurities, place the washed product in a nitrogen atmosphere and cool it at room temperature. Drying for 12 hours under the condition, finally get green pure product MIL-101(Cr)-H, MIL-101(Cr)-CH 3 and MIL-101(Cr)-CN.

[0042] Preparation of coated glass microspheres 3: MIL-101(Cr)-CN containing electron-withdrawing side groups...

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Abstract

The invention discloses a method for preparing a laser retroreflective unmanned vehicle coating, which comprises the following steps: (1) obtaining modified glass microspheres with lipophilic surfaces; The outside is coated with the first reflective film, the second reflective film and the third reflective film successively to obtain coated glass microspheres, and the optical thicknesses of the first to the third reflective films increase successively; (3) prepare a primer layer on the substrate surface; (4) Coating the bonding composition to the thickness of half the diameter of the glass microspheres on the primer layer, evenly scattering the coated glass microspheres in the bonding composition, and forming a bonding layer after the bonding composition is cured , using peroxide water to destroy the first to third reflective films on the surface of the coated glass microspheres that expose the bonding layer, and then coat the epoxy protective coating to obtain the final product. The product prepared by the invention has excellent reliability and good total reflection effect.

Description

technical field [0001] The invention belongs to the technical field of coating materials for unmanned vehicles, and in particular relates to a method for preparing laser retroreflective coatings for unmanned vehicles. Background technique [0002] With the huge investment of international Internet giants headed by Google in the unmanned car industry, domestic Baidu, Alibaba, Tencent, etc. have also successively established their own unmanned car research and development departments. The unmanned car market has ushered in great development. High-signal reflective coatings for automobiles have also attracted widespread attention as materials with special properties. For unmanned cars, how to quickly and accurately grasp the road conditions around the driving route is much more important and complicated than developing a smart driving software with various functions. The variable of the vehicle comes from the same driving cars nearby, so in the study of unmanned vehicles, how ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D5/00C09D7/43C09D179/04C09D5/33C09D7/62C08G83/00B05D7/24B05D7/00B05D5/00
CPCB05D5/00B05D7/24B05D7/54B05D2504/00C08G83/008C09D5/002C09D5/004C09D163/00C09D179/04C09D7/43C09D7/62C09D7/70C08L1/284C08K9/08C08K7/20
Inventor 戴李宗鹿振武黄楚红袁丛辉许一婷陈国荣
Owner XIAMEN UNIV
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