| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an autonomous cleaning device which instantly detects collision of debris to be cleaned on a floor and can control its operation mode in response to the detected debris, moving pattern and actions, so that the device is operated toward a dirtier area. Ž<P>SOLUTION: By a piezoelectric debris sensor responding to the collision of the debris and a related signal processor, an autonomous or nonautonomous cleaning device detects presence of the debris, responds and allows selections of action modes like spot coverage, action conditions and moving patterns. Two or more sensor channels can be used to enable detection or generation of a difference in right/left debris signals and, therefore, the autonomous device can be guided in the direction of the debris. In addition, by locating the debris sensor at a position where the debris swept up by a brush assembly collides, the collision of the debris becomes more properly detected. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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