Smart road marking construction method, smart road markings and autonomous driving system using the same

Patent metadata

Field	Value
Publication number	US-2024301637-A1
Application number	US-202318495439-A
Country	US
Kind code	A1
Filing date	Oct 26, 2023
Priority date	Mar 10, 2023
Publication date	Sep 12, 2024
Grant date	—

Abstract

The present invention relates to a smart road marking construction method, a smart road marking, and an autonomous driving system using the same. To this end, the smart road marking construction method according to an embodiment of the present invention comprises: a step (S 10 ) of preparing a road marking composition by mixing a paint and a hardener; a step (S 20 ) of forming a base layer 10 by applying the road marking composition to an upper surface of a road 1 ; a step (S 30 ) of forming a bead layer 20 by applying glass beads 21 containing magnetic materials (M) to an upper surface of the base layer 10 ; and a step (S 40 ) of allowing the resulting bead layer to be cured for a certain period of time. As a result, the lane recognition rate of autonomous vehicles by means of radar sensors can be improved, thereby addressing the limitations of conventional vision-based road markings.

First claim

What is claimed is:

1 . A smart road marking construction method comprising:
a step (S 10 ) of preparing a road marking composition by mixing a paint and a hardener; a step (S 20 ) of forming a base layer 10 by applying the road marking composition to an upper surface of a road 1 ; a step (S 30 ) of forming a bead layer 20 by applying glass beads 21 containing magnetic materials (M) to an upper surface of the base layer 10 ; and a step (S 40 ) of allowing the resulting bead layer to be cured for a certain period of time.

2 . The smart road marking construction method of claim 1 , wherein the magnetic material (M) is coated on the surface of the glass bead 21 or inserted therein.

3 . A smart road marking 100 comprising an adhesive sheet (AS) to be attached to an upper surface of a road 1 , wherein the adhesive sheet (AS) is provided with an adhesive layer 70 to be attached to the asphalt or road surface, a road marking layer 80 is integrally laminated on the top of the adhesive layer 70 , and a bead layer 20 comprising glass beads 21 containing magnetic materials (M) is integrally attached to an upper surface of the road marking layer 80 .

4 . The smart road marking 100 of claim 3 , a magnetic marker 40 is attached to an upper surface of the road marking layer 80 .

5 . The smart road marking 100 of claim 4 , wherein the magnetic marker 40 comprises an RFID tag 50 inserted therein.

6 . A smart road marking construction method comprising:
a step (S 10 ) of preparing a road marking composition by mixing a paint and a hardener; a step (S 20 ) of forming a base layer 10 by applying the road marking composition to an upper surface of a road 1 ; a step (S 30 ) of forming a bead layer 20 by applying glass beads 21 to an upper surface of the base layer 10 ; a step (S 40 ) of allowing the resulting bead layer to be cured for a certain period of time; a step (S 50 ) of forming an insertion hole 30 by grinding the bead layer 20 and the base layer 10 to a predetermined diameter and depth; a step (S 60 ) of applying an adhesive 31 to the inside of the insertion hole 30 ; and a step (S 70 ) of inserting a magnetic marker 40 into the insertion hole 30 .

7 . The smart road marking construction method of claim 6 , wherein the magnetic marker 40 comprises an RFID tag 50 inserted therein.

8 . The smart road marking construction method of claim 6 , further comprising a step ( 80 ) of forming the same level as the adjacent bead layer 20 in the insertion hole 30 by applying glass beads 21 to the top of the magnetic marker 40 .

9 . The smart road marking construction method of claim 6 , wherein the insertion hole 30 comprises a deformation inducing portion 35 whose cross-section is extended toward one side, and the magnetic marker 40 is made of a ductile material to be deformed into the deformation inducing portion 35 by an upper load.

10 . An autonomous driving system using a smart road marking comprising:
a smart road marking 100 including a magnetic material (M) or a magnetic marker 40 ; a radar sensor 200 that is mounted on a vehicle to recognize road marking information including the location from the smart road marking 100 ; and a driving assistance device 300 that controls the vehicle's movement based on the road marking information recognized by the radar sensor 200 .

11 . The autonomous driving system using a smart road marking of claim 10 , wherein the smart road marking 100 comprises an RFID tag 50 , and
wherein the autonomous driving system further comprises: an RFID receiver 400 that is mounted on the vehicle to recognize road marking information including the location from the RFID tag 50 ; and
a central control server 500 that receives information about the driving vehicle in real time from the RFID receiver 400 .

Assignees

• Korea Inst Civil Eng & Building Tech

Inventors

• Lee Suk-Ki
• Kim Yongseok
• Park Won Il
• Park Ki-Soo

Classifications

• E01F9/512

  Preformed road surface markings, e.g. of sheet material; Methods of applying preformed markings · CPC title

• E01F9/518

  formed in situ, e.g. by painting, by casting into the road surface or by deforming the road surface · CPC title

• E01F9/524

  Reflecting elements specially adapted for incorporation in or application to road surface markings · CPC title

• E01C23/166

  Means for dispensing particulate material on to freshly applied markings or into the marking material after discharge thereof, e.g. reflective beads, grip-improving particles · CPC title

• E01F9/30 Primary

  Arrangements interacting with transmitters or receivers otherwise than by visible means, e.g. using radar reflectors or radio transmitters (E01F11/00 takes precedence) · CPC title