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    • 14. 发明专利
    • DE50312390D1
    • 2010-03-18
    • DE50312390
    • 2003-06-13
    • KAERCHER GMBH & CO KG ALFRED
    • DIEHL RALPHKEPPLER JOACHIMSKOUMAL ROGERBENZLER GOTTFRIED
    • G05D1/02
    • 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. In order to develop the floor treatment system in such a way that the floor treatment unit can reliably steer toward the central charging station, it is proposed according to the invention that the transmitting device has a first transmitting unit for the formation of a far field of the target radiation and a second transmitting unit for the formation of a near field of the target radiation, the near field extending over a wider and shorter area from the charging station than the far field.