公开(公告)号：US20210048831A1

公开(公告)日：2021-02-18

申请号：US16993325

申请日：2020-08-14

Applicant: LG ELECTRONICS INC.

Inventor： Hyungtae YUN ,  Byounghee KIM

IPC: G05D1/02 ,  B25J9/16 ,  G05D1/00

Abstract: A mobile robot includes a body, a propulsion module, an ultrasound sensor module that is configured to detect a boundary of a cleaning area using a sound wave, and a controller configured to control the propulsion module based on the determined boundary. The ultrasound sensor module may include an ultrasonic sensor unit and a boundary detector. The sensor unit may emit the sound wave, receive the reflected sound wave from a target, and output a sound wave signal. And, the boundary detector may analyze the sound wave signal to detect the boundary of the cleaning area.

公开(公告)号：US20180039275A1

公开(公告)日：2018-02-08

申请号：US15666987

申请日：2017-08-02

Applicant: LG ELECTRONICS INC.

Inventor： Hyungtae YUN ,  Seungjin AHN

IPC: G05D1/02 ,  A47L11/40 ,  A47L9/28 ,  A47L9/00 ,  A47L9/16

Abstract: A autonomous robot includes a main body, a driving unit to move the main body within an operation region, a battery to supply power to the driving unit, and a controller to control the driving unit in a manner that the main body travels along a wall of the operation region to move to a charging stand when a remaining power level of the battery drops below a reference power level, wherein the controller controls the driving unit in a manner that the main body escape from one region corresponding to a closed curve when a movement path of the main body forms the closed curve while the driving unit performs wall following.

公开(公告)号：US20210034061A1

公开(公告)日：2021-02-04

申请号：US16943122

申请日：2020-07-30

Applicant: LG ELECTRONICS INC.

Inventor： Hyungtae YUN

IPC: G05D1/02 ,  A47L11/40 ,  A47L11/282

Abstract: A mobile robot is configured to move a main body and rotate a cleaning cloth by means of a motor to clean a surface. A location change of the main body is analyzed to determine a traveling state of the robot. The absence of the cleaning cloth is detected and the operation of the robot is controlled based on the detected travelling state. A user is notified about the absence of the cleaning cloth.