An embodiment of the present invention provides a
robot vacuum cleaner system characterized by comprising: one or more heterogeneous docking stations which can be arranged within a travel area and are assigned different docking signals according to the type; and a
robot cleaner that receives the docking signals from the one or more heterogeneous docking stations and attempts docking, wherein the
robot cleaner includes: a driving unit that moves a main body; a battery supplying power to the driving unit; and a sensor unit that receives the docking
signal from the one or more docking stations for charging the battery, and when docking is necessary, the robot cleaner docks onto a
docking station by determining the type of the
docking station from the docking signals sensed by the sensor unit and determining a docking mode according to the type of the
docking station. Therefore, when the heterogeneous docking stations are arranged in a single space, the robot cleaner can recognize a specific docking
station and perform a docking operation for docking thereon to prevent a docking error. In addition, when the plurality of heterogeneous docking stations are arranged in a single space, the plurality of heterogeneous docking stations transmit different docking signals, and the robot charger can read the corresponding docking signals and travel to a specific docking
station to reduce travel loss.