US 12,493,109 B2
Systems and methods for tracking a position of a rotating platform of a LIDAR system
Mark D. Entwistle, New Egypt, NJ (US); Bayard G. Gardineer, IV, Princeton, NJ (US); Gary Burkholder, Morgan Hill, CA (US); Christopher John Trowbridge, Dexter, MI (US); Ryan Thomas Davis, Austin, TX (US); William Mordarski, Colts Neck, NJ (US); and Bilge Kocer, Sunnyvale, CA (US)
Assigned to LG INNOTEK CO., LTD., Seoul (KR)
Filed by LG INNOTEK CO., LTD., Seoul (KR)
Filed on Nov. 21, 2022, as Appl. No. 17/991,053.
Application 17/991,053 is a continuation in part of application No. 17/180,260, filed on Feb. 19, 2021, granted, now 12,276,757.
Prior Publication US 2023/0110828 A1, Apr. 13, 2023
Int. Cl. G01S 7/481 (2006.01); G01B 7/31 (2006.01); G01D 5/14 (2006.01); G01P 3/487 (2006.01); G01S 17/931 (2020.01); H02K 11/215 (2016.01)
CPC G01S 7/4817 (2013.01) [G01B 7/31 (2013.01); G01D 5/145 (2013.01); G01P 3/487 (2013.01); G01S 17/931 (2020.01); H02K 11/215 (2016.01)] 14 Claims
OG exemplary drawing
 
1. A LIDAR assembly comprising:
a stationary assembly configured to mount to an autonomous vehicle;
a rotating assembly for rotation about an axis and relative to the stationary assembly;
one or more emitting devices and receiving devices mounted to the rotating assembly and collectively configured to detect objects external to the autonomous vehicle;
a first printed circuit board mounted within the rotating assembly and a second printed circuit board mounted within the stationary assembly, the first printed circuit board being receiving sensed data from the one or more emitting devices, and the first printed circuit board being in communication with the second printed circuit board to transmit the sensed data;
a power transformer including a primary winding within the stationary assembly and a secondary winding within the rotating assembly, the power transformer being operable to wirelessly transmitting a predetermined voltage from the stationary assembly to the rotating assembly;
a first magnet has a north pole and a south pole and located on the rotating assembly and arranged with the north pole of the first magnet facing a first radial direction;
a second magnet has a north pole and a south pole and located on the rotating assembly and arranged with the south pole of the second magnet facing the first radial direction;
a first sensor located on the rotating assembly, wherein the first sensor is further configured to measure a first magnetic field of the first magnet and a second magnetic field of the second magnet as the rotating assembly and the stationary assembly rotate relative to one another; and
a center rod extending between the rotating assembly and the stationary assembly,
wherein the center rod includes a power cable connected to the first printed circuit board.