| 摘要 |
PROBLEM TO BE SOLVED: To provide a floor surface detector and a vacuum cleaner which allow the kind of floor surface to be discriminated more finely than a conventional distinction between a panel floor, a tatami mat, and a carpet, do not need to exchange even after many hours' use, and precisely and quickly discriminate the kind of floor surface slid in a wide range of use scenes. SOLUTION: The floor surface detector is provided with a vibration detection sensor 12 for detecting vibrations inside a casing of a suction tool 8. Vibration when the suction tool 8 slides or is placed is detected, a peak frequency giving a maximum value is calculated by a discrimination part 16 after a band 500 to 1,000 Hz is narrowed down to by BPF (Band-Pass Filter) with respect to an FFT output of the vibration signal, and further the peak frequency is compared with a threshold for two or more floor materials for discrimination preset. Thus, the kind of floor is discriminated more finely than the two conventional kinds, of a carpet and a wooden floor. COPYRIGHT: (C)2009,JPO&INPIT
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