Patent ID: 8871030
Filing Date: 2014-10-28
Classification: A47L,G05D

Abstract:
1. A cleaning path guidance method combined with a dirt detection mechanism, performed in an automatic cleaning device to generate a cleaning path for the automatic cleaning device to clean an area to be cleaned according to the clean path, wherein a plurality of grids is defined in the area to be cleaned, and the method comprises: moving the automatic cleaning device in the area to be cleaned, so as to clear dirt away with the automatic cleaning device; continuously performing a simultaneous localization and mapping (SLAM) algorithm to determine a current position of the automatic cleaning device, during said moving; detecting a flow of the dirt cleared away to obtain a dirt level of a current grid, during said moving; marking the grid as a dirty grid, when the dirt level of the current grid exceeds a threshold; finding a shortest path passing through all marked dirty grids as a cleaning path according to the marked dirty grids; and said moving including moving the automatic cleaning device to pass through each marked dirty grid according to the clean path, so as to clean each marked dirty grid sequentially.