Vehicle-mounted radar calibration device and method

Patent metadata

Field	Value
Publication number	US-2020319298-A1
Application number	US-202016910750-A
Country	US
Kind code	A1
Filing date	Jun 24, 2020
Priority date	Dec 25, 2017
Publication date	Oct 8, 2020
Grant date	—

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 ( 500 ), comprising:
a bracket apparatus ( 100 ); a radar calibration component ( 400 ), configured to be installed on the bracket apparatus ( 100 ), wherein the radar calibration component ( 400 ) comprises a base board ( 401 ) and the radar calibration component ( 400 ) 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 ( 401 ) is completed, to calibrate the vehicle-mounted radar; wherein the radar calibration component ( 400 ) comprises the base board ( 401 ) and angle adjustment assemblies ( 406 ), the angle adjustment assemblies ( 406 ) are configured to adjust the base board ( 401 ), so that the base board ( 401 ) 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 ( 500 ) according to claim 1 , wherein the radar calibration component ( 400 ) further comprises mounting brackets ( 402 ), an adjustment bracket ( 405 ) and an adjustment rod ( 407 );
the adjustment bracket ( 405 ) is hinged to the adjustment rod ( 407 ); each angle adjustment assembly ( 406 ) comprises a cam disc ( 410 ), wherein the cam disc ( 410 ) is provided with a cam groove ( 4100 ), the cam groove ( 4100 ) is provided with at least two positioning holes at the bottom wall and the cam disc ( 410 ) is sleeved on the adjustment rod ( 407 ); and each mounting bracket ( 402 ) is provided with a convex column ( 4026 ), which is accommodated in the cam groove ( 4100 ) and can slide in the cam groove ( 4100 ) and be inserted into any of the at least two positioning holes.

3 . The vehicle-mounted radar calibration device ( 500 ) according to claim 2 , wherein the cam groove ( 4100 ) comprises at least three arcs with different curvatures and the arcs with different curvatures are connected in descending order of curvatures.

4 . The vehicle-mounted radar calibration device ( 500 ) according to claim 1 , wherein the angle adjustment assembly ( 406 ) further comprises a cam spring plate ( 412 ), the cam spring plate ( 412 ) is fixedly installed in the cam groove ( 4100 ), the cam spring plate ( 412 ) comprises at least three through holes ( 4120 ) and each of a first positioning hole ( 4102 ), a second positioning hole ( 4104 ) and a third positioning hole ( 4106 ) is aligned with a corresponding through hole ( 4120 ); and
the convex column ( 4026 ) is abutted against the cam spring plate ( 412 ), wherein when the convex column ( 4026 ) slides in the cam groove ( 4100 ), sliding friction occurs between the convex column ( 4026 ) and the cam spring plate ( 412 ).

5 . The vehicle-mounted radar calibration device ( 500 ) according to claim 1 , wherein the angle adjustment assembly ( 406 ) further comprises a first clasping piece ( 414 ), a second clasping piece ( 416 ), and pins ( 418 );
the first clasping piece ( 414 ) is fixedly installed on the cam disc ( 410 ); the adjustment rod ( 407 ) is clasped between the first clasping piece ( 414 ) and the second clasping piece ( 416 ); and one end of each pin ( 418 ) penetrates through the first clasping piece ( 414 ) and is fixed on the second clasping piece ( 416 ), locking the first clasping piece ( 414 ) into the second clasping piece ( 416 ), so that the adjustment rod ( 407 ) is clasped between the first clasping piece ( 414 ) and the second clasping piece ( 416 ) and the angle adjustment assembly ( 406 ) can rotate with the adjustment rod ( 407 ).

6 . The vehicle-mounted radar calibration device ( 500 ) according to claim 1 , wherein
each mounting bracket ( 402 ) comprises at least one first mounting protrusion ( 4022 ) and at least one second mounting protrusion ( 4024 ); the adjustment bracket ( 405 ) comprises at least one first mounting lug ( 4052 ) and at least one second mounting lug ( 4054 ); the at least one first mounting protrusion ( 4022 ) and the at least one first mounting lug ( 4052 ) are separately sleeved on a fixed rotating shaft ( 403 ), so that the mounting brackets ( 402 ) are hinged to the adjustment bracket ( 405 ) through the fixed rotating shaft ( 403 ); there is at least one angle adjustment assembly ( 406 ); each second mounting protrusion ( 4024 ) is provided with one convex column ( 4026 ), which is accommodated in a cam groove ( 4100 ) of a corresponding cam disc ( 410 ); and the adjustment rod ( 407 ) passes through the at least one second mounting lug ( 4054 ) and the cam disc ( 410 ) of the at least one angle adjustment assembly ( 406 ).

7 . The vehicle-mounted radar calibration device ( 500 ) according to claim 1 , wherein there are two mounting brackets ( 402 ), which are disposed in parallel at a preset interval and each mounting bracket ( 402 ) comprises a first mounting protrusion ( 4022 ) and a second mounting protrusion ( 4024 );
the adjustment bracket ( 405 ) comprises two first mounting lugs ( 4052 ) and two second mounting lugs ( 4054 ); the two first mounting protrusions ( 4022 ) and the two first mounting lugs ( 4052 ) are separately sleeved on the fixed rotating shaft ( 403 ), so that the mounting brackets ( 402 ) are hinged to the adjustment bracket ( 405 ) through the fixed rotating shaft ( 403 ); the adjustment rod ( 407 ) sequentially passes through one second mounting lug ( 4054 ), two cam discs ( 410 ) and the other second mounting lug ( 4054 ); and each of the second mounting protrusions ( 4024 ) is provided with a convex column ( 4026 ).

8 . The vehicle-mounted radar calibration device ( 500 ) according to claim 7 , wherein two convex columns ( 4026 ) of the two second mounting protrusions ( 4024 ) are disposed along a same straight line and opposite to each other.

9 . The vehicle-mounted radar calibration device ( 500 ) according to claim 1 , wherein
the radar calibration component ( 400 ) comprises the fixed rotating shaft ( 403 ), wherein when the calibration on the vertical plane of the base board ( 401 ) is completed, the central axis of the fixed rotating shaft ( 403 ) is perpendicular to the central axis plane of the to-be-calibrated vehicle; the base board ( 401 ) can rotate around the central axis of the fixed rotating shaft ( 403 ) and stay at least in a first position, a second position and a third position; when the base board ( 401 ) stays in the first position, the base board ( 401 ) is vertically disposed; when the base board ( 401 ) stays in the second position, the base board ( 401 ) is at an angle to the vertical direction; and when the base board ( 401 ) stays in the third position, the base board ( 401 ) is at the angle to the vertical direction; wherein the base board ( 401 ) in the second position and the base board ( 401 ) in the third position are symmetrical relative to the base board ( 401 ) in the first position; and the angle is less than an allowable angle deviation value of the vehicle-mounted radar.

10 . The vehicle-mounted radar calibration device ( 500 ) according to claim 1 , comprising:
a laser ( 200 ), installed in the to-be-calibrated vehicle and configured to emit a laser beam to the base board ( 401 ); and a diaphragm ( 300 ), configured to control the laser beam emitted by the laser ( 200 ) to penetrate through the diaphragm ( 300 ), wherein the base board ( 401 ) is configured to reflect the laser beam penetrating through the diaphragm ( 300 ) back to the laser ( 200 ) along an original route, to calibrate the vertical plane of the base board ( 401 ).

Assignees

• Autel Intelligent Tech Corp Ltd

Inventors

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

Classifications

• F16M11/42

  with arrangement for propelling the support {stands on wheels} · CPC title

• F16M11/24

  changeable in height or length of legs, also for transport only, {e.g. by means of tubes screwed into each other}(F16M11/42 takes precedence) · CPC title

• F16M11/2085

  comprising means allowing sideward adjustment, i.e. left-right translation of the head relatively to the undercarriage · CPC title

• F16M11/10

  around a horizontal axis {(F16M11/12 takes precedence)} · CPC title

• F16M11/18

  with mechanism for moving the apparatus relatively to the stand · CPC title