Abstract: A rotating device and a rotating radar device. The rotating device comprises a fixed platform and a rotating platform; the top of the fixed platform and the bottom of the rotating platform are rotatably connected by a rotating shaft, a first bearing, and a second bearing; the rotating shaft is connected to the inner ring; the fixed platform includes a carbon brush and a first magnetic member; the rotating platform includes a second magnetic member and a rotor conductive ring; an outer ring of the first bearing is connected to the fixed platform; an inner ring of the second bearing is connected to the fixed platform, and an outer ring of the second bearing is connected to the rotating platform.

Abstract: A method and device for drawing an outline of a region and a computer-readable storage medium are provided. The method includes: updating an original region outline map according to a first predetermined algorithm to obtain a first region outline map; updating the original region outline map according to a second predetermined algorithm to obtain a second region outline map; acquiring and processing first distance data obtained by a laser radar to generate a first to-be-matched outline map; comparing the first to-be-matched outline map with the first region outline map and the second region outline map, respectively; and replacing the second region outline map with the first region outline map if the similarity between the first region outline map and the first to-be-matched outline map is higher than the similarity between the second region outline map and the first to-be-matched outline map.

Abstract: Provided are communication relationship establishing method and device, computer readable storage medium, electronic device, and cleaning device.

Abstract: A rotating device and a rotating radar device. The rotating device comprises a fixed platform and a rotating platform; the top of the fixed platform and the bottom of the rotating platform are rotatably connected by a rotating shaft, a first bearing, and a second bearing; the rotating shaft is connected to the inner ring; the fixed platform includes a carbon brush and a first magnetic member; the rotating platform includes a second magnetic member and a rotor conductive ring; an outer ring of the first bearing is connected to the fixed platform; an inner ring of the second bearing is connected to the fixed platform, and an outer ring of the second bearing is connected to the rotating platform.

Abstract: Provided are communication relationship establishing method and device, computer readable storage medium, electronic device, and cleaning device.

Abstract: A method and device for drawing an outline of a region and a computer-readable storage medium are provided. The method includes: updating an original region outline map according to a first predetermined algorithm to obtain a first region outline map; updating the original region outline map according to a second predetermined algorithm to obtain a second region outline map; acquiring and processing first distance data obtained by a laser radar to generate a first to-be-matched outline map; comparing the first to-be-matched outline map with the first region outline map and the second region outline map, respectively; and replacing the second region outline map with the first region outline map if the similarity between the first region outline map and the first to-be-matched outline map is higher than the similarity between the second region outline map and the first to-be-matched outline map.