Automatically displaceable floor dust collecting device i.e. cleaning robot, operating method, involves scanning marks with respect to structures having repetitions variable in scanning direction and recognizable by scanning processes

摘要

The method involves providing position marks (10) within an operational environment of an automatically displaceable floor dust collecting device (1). The environment is gradually scanned by ultrasound and/or infrared. The position marks are scanned with respect to structures (11) having repetitions variable in a scanning direction (a) and recognizable by the scanning processes. The structures are provided such that an unchanged structure section is detected twice during scanning process. The structures are formed by bright-dark-sections. An independent claim is also included for a floor dust collecting device.