Patent ID: 7421338
Filing Date: 2008-09-02
Classification: G01S,G05D

Abstract:
1. A robot system including a beacon with a transmitting part to transmit light to determine location, and a mobile robot with a receiving part to receive the light, the beacon comprising: a rotation driving part to rotate the transmitting part; and an encoder to add phase information regarding rotation of the transmitting part to the light, and the mobile robot comprising: a location determiner to determine a location of the mobile robot based on the phase information of the light received by the receiving part, wherein the rotation driving part outputs information on a phase shift of the transmitting part relative to a reference direction of the rotation driving part of the beacon in accordance with the rotation of the rotation driving part, and wherein the location determiner determines the location of the mobile robot based on a displacement of the mobile robot, and the phase information received by the receiving part.