发明名称 Self-propelled cleaning device and method of operation thereof
摘要 In cleaning using a self-propelled cleaning device, firstly the cleaning device moves alongside a wall surface and then a reference direction is set. Next, the cleaning device advances alongside the wall surface at a prescribed distance, makes a right-angle turn, and travels in the reference direction. When the cleaning device reaches the surface of an opposing wall, it moves in a spiraling manner. At that time, the orientation angle of the cleaning device, which is estimated using a gyro sensor, is checked and corrected. If an obstacle is encountered while traveling, the cleaning device travels on a path that avoids the obstacle or travels in a spiral manner in a region in front of the obstacle.
申请公布号 US7515991(B2) 申请公布日期 2009.04.07
申请号 US20040801861 申请日期 2004.03.17
申请人 HITACHI, LTD.;HITACHI HOME AND LIFE SOLUTIONS, INC. 发明人 EGAWA SAKU;ARAI YUTAKA;ICHINOSE RYOKO;ASA YASUHIRO;TANAKA HIROFUMI
分类号 A47L9/28;G05D1/02 主分类号 A47L9/28
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