Vehicle-mounted radar calibration device and method

Patent metadata

Field	Value
Publication number	US-11740325-B2
Application number	US-202117452278-A
Country	US
Kind code	B2
Filing date	Oct 26, 2021
Priority date	Dec 25, 2017
Publication date	Aug 29, 2023
Grant date	Aug 29, 2023

Abstract

The present invention relates to the technical field of vehicle maintenance and device calibration, and discloses a vehicle-mounted radar calibration device and method. The vehicle-mounted radar calibration device includes a bracket apparatus and a radar calibration component. The radar calibration component is configured to be installed on the bracket apparatus and includes a base board. After calibration on the vertical plane of the base board is completed, the radar calibration component is configured to reflect a radar wave, emitted by a vehicle-mounted radar of a to-be-calibrated vehicle, to the vehicle-mounted radar, to calibrate the vehicle-mounted radar. In the present invention, after the vertical plane of the base board is calibrated, the radar calibration component is used to reflect the radar wave emitted by the vehicle-mounted radar to the vehicle-mounted radar.

First claim

What is claimed is:

1. A vehicle-mounted radar calibration device, comprising:
a bracket apparatus;
a radar calibration component, configured to be installed on the bracket apparatus;
the radar calibration component comprising a base board, an adjustment bracket, an adjustment rod, mounting brackets, and angle adjustment assemblies, the adjustment bracket being hinged to the adjustment rod, wherein:
each angle adjustment assembly comprises a cam disc and a cam spring plate, the cam disc is provided with a cam groove, and the cam spring plate is fixedly installed in the cam groove, the cam spring plate comprises at least three through holes and each of a first positioning hole, a second positioning hole and a third positioning hole is aligned with a corresponding through hole;
each mounting bracket is provided with a convex column, the convex column is abutted against the cam spring plate, and a sliding friction occurs between the convex column and the cam spring plate when the convex column slides in the cam groove;
the radar calibration component is configured to reflect a radar wave, emitted by a vehicle-mounted radar of a to-be-calibrated vehicle, to the vehicle-mounted radar after calibration on the vertical plane of the base board is completed, to calibrate the vehicle-mounted radar; and
the angle adjustment assemblies are configured to adjust the base board, so that the base board can stay in at least two positions and therefore the radar calibration component reflects the radar wave emitted by the vehicle-mounted radar to the vehicle-mounted radar in the at least two positions.

2. The vehicle-mounted radar calibration device according to claim 1 , wherein the bracket apparatus comprises guide rails; and
the radar calibration component is configured to be installed on the guide rails and the radar calibration component can horizontally slide along the guide rails.

3. The vehicle-mounted radar calibration device according to claim 2 , wherein the bracket apparatus comprises a sliding component;
the sliding component is movably installed on the guide rails and can slide along the guide rails; and
the radar calibration component is configured to be installed on the guide rails through the sliding component and the radar calibration component can horizontally slide with the sliding component along the guide rails.

4. The vehicle-mounted radar calibration device according to claim 2 , wherein the bracket apparatus comprises:
a bracket assembly; and
a beam assembly, installed on the bracket assembly, wherein the beam assembly can move in the vertical direction relative to the bracket assembly, the beam assembly comprises the guide rails and the guide rails are horizontally disposed.

5. The vehicle-mounted radar calibration device according to claim 4 , wherein the beam assembly comprises a level instrument configured to check whether the guide rails are horizontally disposed.

6. The vehicle-mounted radar calibration device according to claim 2 , wherein the bracket assembly comprises a bracket body and height adjustment components; and
at least three height adjustment components are installed on a bottom surface of the bracket body and configured to adjust a horizontal angle of the bracket body and a pitching angle of the bracket body.

7. The vehicle-mounted radar calibration device according to claim 6 , wherein there are three height adjustment components distributed as an isosceles triangle, the three height adjustment components are configured to collaboratively adjust the horizontal angle of the bracket body, and the height adjustment component at the apex of the isosceles triangle is configured to adjust the pitching angle of the bracket body.

8. The vehicle-mounted radar calibration device according to claim 6 , wherein the bracket assembly comprises a base bracket and a pole bracket, one end of the pole bracket is connected to the base bracket and the base bracket supports the pole bracket;
the beam assembly is installed on the pole bracket;
the base bracket comprises rolling wheels, the bracket body and the height adjustment components; and
there are at least three rolling wheels installed on the bottom surface of the bracket body for convenience of moving the base bracket.

9. The vehicle-mounted radar calibration device according to claim 8 , wherein the pole bracket comprises a lifting screw rod;
the lifting screw rod is disposed in the vertical direction; and
the beam assembly is sleeved on the lifting screw rod and fits the thread of the lifting screw rod, and when rotating around the central axis of the lifting screw rod, the lifting screw rod can drive the beam assembly to move along the lifting screw rod in the vertical direction.

10. The vehicle-mounted radar calibration device according to claim 9 , wherein the pole bracket comprises a lifting guide rail;
the lifting guide rail comprises poles disposed in the vertical direction; and
the beam assembly is movably installed on the poles and the poles are configured to guide the beam assembly to move in the vertical direction.

11. The vehicle-mounted radar calibration device according to claim 10 , wherein the lifting guide rail comprises a rail installed on the poles in the horizontal direction; and
one end of the lifting screw rod is installed on the rail and the other end of the lifting screw rod is installed on the bracket body.

12. The vehicle-mounted radar calibration device according to claim 10 , wherein the lifting guide rail comprises a rail and a bottom rail;
two poles are disposed in the vertical direction, in parallel and at a preset interval;
the rail is disposed in the horizontal direction and two ends of the rail are respectively installed on the two poles;
the bottom rail is fixedly installed on the bracket body and an end of each pole far away from the rail is fixedly installed on the bottom rail; and
one end of the lifting screw rod is fixedly installed on the rail and the other end of the lifting screw rod is fixedly installed on the bottom rail.

13. The vehicle-mounted radar calibration device according to claim 10 , wherein the pole bracket comprises a height gauge installed on the poles in the vertical direction and configured to measure a moving distance of the beam assembly in the vertical direction.

14. The vehicle-mounted radar calibration device according to claim 9 , wherein the beam assembly comprises a support component and the guide rails;
the support component comprises a support body and a moving block;
the moving block is fixedly installed on the support body and sleeved on the lifting screw rod, and the moving block fits the thread of the lifting screw rod; and
the guide rails are fixedly installed on the support body in the horizontal direction.

15. The vehicle-mounted radar calibration device according to claim 14 , wherein the pole bracket comprises poles disposed in the vertical direction; and
the support component comprises sliding blocks fixedly installed on the support body and the sliding blocks are movably installed on the poles and can slide along the poles.

16. The vehicle-mounted radar calibration device according to claim 14 , wherein
two clamping portions respectively extend from two opposite sides of the support body, the two clamping portions are strip-shaped and disposed in the horizontal direction, in parallel and at a preset interval;
two guide rails are respectively installed on the two clamping portions and disposed in the horizontal direction at a preset interval; and
the sliding component is movably installed on the guide rails th

Assignees

• Autel Intelligent Tech Corp Ltd

Inventors

• Wang Xiaolong
• Qiu Longxue
• CHEN Jin
• Tang Xinguang

Classifications

• G01S7/40 Primary

  Means for monitoring or calibrating · CPC title

• G01S13/931

  of land vehicles · CPC title

• G01S7/027

  Constructional details of housings, e.g. form, type, material or ruggedness · CPC title

• G01S2013/93271

  in the front of the vehicles · CPC title

• G01S7/4026 Primary

  Antenna boresight · CPC title