Lg Electronics Inc.

Young-Gyu Jung

Woo-jin Choi

Moon-Kee Chung

Yong-Woo Lee

Jong-Il Park

Ho-Seon Rew

Choon-Myun Chung

Young-Gie Kim

Hyeun-Sik Nam

Dong-Hoon Yi

Sang-Cheon Kim

Tae-Woong Nah

Disclosed are a mobile robot and a controlling method thereof. The mobile robot comprises: a case; and a sensor unit having two or more sending portions and two or more receiving portions arranged on an outer surface of the case separately and alternately. The plurality of sending portions and receiving portions are arranged in an alternating manner, thereby having a directivity. Also, since signals received through the receiving portions are judged based on a reference value, an area unallowable to be detected for an obstacle sensing is minimized, which allows an obstacle to be detected more accurately. When the obstacle corresponds to a side wall on the basis of a moving path of the mobile robot, a distance between the side wall and the mobile robot is calculated based on signals received by the receiving portion closest to the side wall. Accordingly, the mobile robot can move with maintaining a constant distance from the side wall.

Mobile robot and controlling method thereof

A detecting apparatus and method of a robot cleaner is disclosed. The apparatus includes a detecting unit provided with a transmitting unit for sending a signal to detect the floor and a receiving unit for receiving a signal sent from the transmitting unit to be reflected on the floors an optic angle adjusting unit disposed at least one of the transmitting unit and the receiving unit and configured to adjust optic angles of the signals, and a light shielding unit configured to partially shield a signal sent through the optic angle adjusting unit in order to reduce a deviation of each signal of the transmitting unit and the receiving unit. Accordingly, a measurement deviation with respect to color and feel of the floor can be reduced. Also, an amount of light received at the receiving unit can be obtained as much as required, which allows an accurate detection of the detecting apparatus. In addition, even if there are both drop-off and bump on the floor, the robot cleaner can smoothly operate.

Detecting apparatus and method of robot cleaner

A suction head is provided for removing debris from a surface. The suction head includes a suction nozzle which has a generally semi-circular groove formed on an interior surface of the suction nozzle. Additionally, there is a suction hole formed at a generally central region of a rear surface of the nozzle and communicating with the semi-circular groove. Further, a uniform pressure forming region is provided at a longitudinally extending side of the semi-circular groove, and a suction pipe is mounted to the suction hole to guide air in the semi-circular groove through the suction hole.

Suction head for mobile robot

A vacuum cleaner comprises: a body; a suction head arranged at a lower side of the body and sucking dust or filth; a suction fan mounted at the body and generating a suction force; a dust collecting container mounted in the body and collecting dust or filth sucked into the suction head; and a compression unit mounted at the body and compressing dust or filth collected in the dust collecting container.

Vacuum cleaner

Growing community of inventors

Seoul, South Korea

Young-Gyu Jung