US 12,185,887 B2
AI robot cleaner and robot system having the same
Jaewon Jang, Seoul (KR); Yeongjae Lee, Seoul (KR); and Youngbin Kim, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 17/636,106
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Feb. 17, 2020, PCT No. PCT/KR2020/002200
§ 371(c)(1), (2) Date Feb. 17, 2022,
PCT Pub. No. WO2021/040161, PCT Pub. Date Mar. 4, 2021.
Claims priority of application No. 10-2019-0103764 (KR), filed on Aug. 23, 2019; and application No. 10-2020-0000785 (KR), filed on Jan. 3, 2020.
Prior Publication US 2022/0287532 A1, Sep. 15, 2022
Int. Cl. A47L 11/40 (2006.01); A47L 11/282 (2006.01); G05D 1/00 (2024.01)
CPC A47L 11/4011 (2013.01) [A47L 11/282 (2013.01); A47L 11/4002 (2013.01); A47L 11/4038 (2013.01); A47L 11/4066 (2013.01); A47L 11/4069 (2013.01); A47L 11/4088 (2013.01); A47L 2201/04 (2013.01); A47L 2201/06 (2013.01); G05D 1/021 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A robot cleaner comprising:
a main body forming an outer shape;
a pair of rotary mops moving the main body while rotating in contact with a surface;
a drive motor rotating the pair of rotary mops;
a pump connected to a water tank and driving a nozzle for spraying water to at least one of the rotary mops; and
a controller for, after receiving a cleaning start signal, reading an output current of the drive motor and determining a water content of at least one of the rotary mops in a preliminary step before wet cleaning, and controlling to start the wet cleaning after driving the pump until the determined water content of the at least one of the rotary mops satisfies a certain level.