Abstract: The invention relates to a floor treatment system with a self-propelled and self-steering floor treatment unit, which comprises an electrically driven floor treatment assembly and also a rechargeable power supply unit, and with a central charging station for recharging the power supply unit, the floor treatment unit being capable of being electrically connected to the charging station by means of respective electrical connecting elements disposed on the charging station and the floor treatment unit. In order to develop the floor treatment system in such a way that improved electrical coupling of the respective connecting elements is made possible, it is proposed according to the invention that at least one of the respective connecting elements is spring-mounted.

Abstract: The invention relates to a floor treatment system with a self-propelled and self-steering floor treatment unit, which comprises an electrically driven floor treatment assembly and also a rechargeable power supply unit and an electrical control system, and with a central charging station for recharging the power supply unit, the charging station having a transmitting device for emitting an infrared target radiation, and it being possible for the target radiation to be sensed in a directionally dependent manner by a receiving device of the floor treatment unit for the automatic alignment and positioning of the floor treatment unit at the charging station.

Abstract: The invention relates to a floor treatment system with a self-propelled and self-steering floor treatment unit, which comprises an electrically driven floor treatment assembly and also a rechargeable power supply unit, and with a central charging station for recharging the power supply unit, the floor treatment unit being capable of being electrically connected to the charging station by means of electrical connecting elements that are associated with one another and are disposed on the charging station and the floor treatment unit. In order to develop the floor treatment system in such a way that improved electrical coupling of the connecting elements that are associated with one another is made possible, it is proposed according to the invention that at least one of the connecting elements that are associated with one another is mounted in a sprung manner.

Abstract: The invention relates to a method for operating a floor cleaning system having a central suction station with which there is associated a self-propelled and self-steering suction appliance, dirt being picked up from a floor surface that is to be cleaned by means of the suction appliance and being transferred into a dirt collection vessel of the suction appliance, and the suction station having a suction unit, and the dirt collection vessel being sucked out by means of the suction unit. To refine the method in such a manner that the levels of noise produced by the floor cleaning system can be reduced, it is proposed, according to the invention, that the suction unit is optionally operated with a maximum suction power or a reduced suction power. The invention also proposes a floor cleaning system for carrying out the method.

Abstract: The invention relates to a floor treatment system with a self-propelled and self-steering floor treatment unit, which comprises an electrically driven floor treatment assembly and also a rechargeable power supply unit and an electrical control system, and with a central charging station for recharging the power supply unit, the charging station having a transmitting device for emitting an infrared target radiation, and it being possible for the target radiation to be sensed in a directionally dependent manner by a receiving device of the floor treatment unit for the automatic alignment and positioning of the floor treatment unit at the charging station.