# US 12,181,601 B2 · Calibration device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,181,601 B2 - Document ID: US12181601B2 - Status: Granted - Kind: B2 - Application number: 17/535,552 - Filed: 2021-11-24 - Published: 2022-03-17 - Granted: 2024-12-31 - Earliest claimed: 2019-07-05 - Assignees: Autel Intelligent Technology Corp., Ltd. - Applicants: Autel Intelligent Technology Corp., Ltd. - Inventors: Kaikai Zhang; Lianjun Liu; Biwang Lai - Web page: https://patentgrep.com/patent/US12181601B2 ## CPC - G01S 7/40: Means for monitoring or calibrating - G01S 7/4082: {using externally generated reference signals, e.g. via remote reflector or transponder} - F16M 11/041: {Allowing quick release of the apparatus} - F16M 13/022: {repositionable} - G01M 11/00: Testing of optical apparatus; Testing structures by optical methods not otherwise provided for - G01S 7/4026: {Antenna boresight} - G01S 13/931: of land vehicles - G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - F16M: FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS - G01M: TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR ## Abstract A calibration device is provided. The calibration device includes a laser assembly, a calibration bracket and a magnetic element. The calibration bracket includes a loading platform which is configured to support the laser assembly. The magnetic element is mounted on one of the laser assembly and the loading platform, and is configured to attract the other of the laser assembly and the loading platform. By means of arranging the magnetic element on one of the loading platform and the laser assembly, the magnetic element can attract the other of the loading platform and the laser assembly, so that when the laser assembly needs to be mounted on the loading platform, the laser assembly only needs to approach the loading platform and the laser assembly will be attracted to the loading platform due to the magnetic force provided by the magnetic element. ## Claims ### Claim 1 A calibration device, comprising: a laser assembly; a calibration bracket, comprising a pole and a loading platform, the pole configured to support the loading platform, and the loading platform configured to support the laser assembly; a magnetic element, mounted on one of the laser assembly and the loading platform, and configured to attact the other of the laser assembly and the loading platform, the magnetic element being disposed on a front surface, facing a vehicle to be calibrated, of the loading platform, or the magnetic element being disposed on a surface, mating with the front surface in an attractive manner, of the laser assembly; wherein the laser assembly comprises a fixing seat and a laser; and the fixing seat being used to be attracted to the front surface of the loading platform, and the laser being mounted to the fixing seat and used for emitting laser light. ### Claim 2 (depends on 1) The calibration device according to claim 1, wherein the pole passes through the loading platform, and the loading platform is movable along a length direction of the pole. ### Claim 3 (depends on 1) The calibration device according to claim 1, wherein the loading platform is provided with a mounting surface for attracting and receiving the laser assembly, the mounting surface being a surface of the loading platform other than the front surface. ### Claim 4 (depends on 3) The calibration device according to claim 3, wherein the mounting surface is substantially parallel to the pole. ### Claim 5 (depends on 3) The calibration device according to claim 3, wherein the loading platform is provided with a mounting groove, and the mounting surface is located in the mounting groove. ### Claim 6 (depends on 3) The calibration device according to claim 3, wherein a positioning column is projected from the mounting surface, and the laser assembly is provided with a positioning hole; and the positioning column is received in the positioning hole when the laser assembly is attracted to and received in the mounting surface. ### Claim 7 (depends on 3) The calibration device according to claim 3, wherein two mounting surfaces are provided, and the laser assembly is configured to be attracted to and received in one of the two mounting surfaces. ### Claim 8 (depends on 1) The calibration device according to claim 1, wherein the calibration device further comprises a protection chain having one end connected to the loading platform and the other end connected to the laser assembly. ### Claim 9 (depends on 1) The calibration device according to claim 1, wherein the fixing seat is provided with a mounting cylinder, one end of the laser is configured to emit laser light, and the other end of the laser is sleeved by the mounting cylinder. ### Claim 10 (depends on 9) The calibration device according to claim 9, wherein a switch of the laser is provided at the other end of the laser; and the switch is exposed on a surface of the fixing seat facing away from the mounting cylinder. ### Claim 11 (depends on 10) The calibration device according to claim 10, wherein the mounting cylinder is provided with a fastening screw penetrating therethrough in a radial direction to fix the other end of the laser to the mounting cylinder. ### Claim 12 (depends on 9) The calibration device according to claim 9, wherein the mounting cylinder is provided with a moving channel therein, and the moving channel has a channel bottom; a switch of the laser is provided at the other end of the laser, and the switch is a push button; and the other end of the laser passes through the the moving channel to be sleeved by the mounting cylinder, and the laser is movable along the moving channel so that the push button approaches or moves away from the channel bottom. ### Claim 13 (depends on 12) The calibration device according to claim 12, wherein the laser assembly further comprises a resilient member for providing a resilient force to move the push button away from the the channel bottom. ### Claim 14 (depends on 13) The calibration device according to claim 13, wherein the resilient member is a compression spring; and two ends of the compression spring abut against the channel bottom and the other end of the laser, respectively. ### Claim 15 (depends on 14) The calibration device according to claim 14, wherein the end of the compression spring abutting against the channel bottom sleeves a bulge, the bulge being projected from the channel bottom and aligned with the push button. ### Claim 16 (depends on 12) The calibration device according to claim 12, wherein the moving channel is provided with an annular stop portion at an opening of the moving channel, the annular stop portion being smaller than the moving channel in cross-sectional dimension, and the moving channel sleeves the laser by means of the annular stop portion; and the other end of the laser is provided with an annular limit portion projected in a radical direction thereof, the annular limit portion being larger than the laser in cross-sectional dimension. ### Claim 17 (depends on 1) The calibration device according to claim 1, wherein the magnetic element is embedded in one of the laser or the loading platform. ### Claim 18 (depends on 1) The calibration device according to claim 1, wherein one of the laser assembly and the loading platform is provided with the magnetic element, and the other of the loading platform and the laser assembly is provided with an attracting plate to be attracted by the magnetic element. ### Claim 19 (depends on 1) The calibration device according to claim 1, wherein the calibration device further comprises a calibration element; and the calibration element and the laser are alternatively mounted on the loading platform.