公开(公告)号：US11464160B2

公开(公告)日：2022-10-11

申请号：US16734942

申请日：2020-01-06

Applicant: LG ELECTRONICS INC.

Inventor： Kyungman Yu ,  Hyunsup Song ,  Hungkook Joo

IPC: A01D34/00 ,  G05D1/02 ,  A01D101/00

Abstract: A lawn mower robot may include a plurality of distance sensor units. Each distance sensor unit detects distance information between the lawn mower robot and a fence for partitioning a region. A controller calculates adjacent direction information using each detected distance information. In addition, the lawn mower robot includes a position sensor module. The position sensor module detects position information related to the lawn mower robot. The controller detects whether the lawn mower has deviated from a preset region by using the position information. When the lawn mower robot has deviated, the lawn mower robot can be moved in a direction according to the calculated adjacent direction information and return along the shortest path.