Auto clean machine, cliff determining method and surface type determining method

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United States of America Patent

PATENT NO 11819184
APP PUB NO 20230044840A1
SERIAL NO

17970596

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Abstract

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An auto clean machine, comprising: a chassis; a first light source, configured to emit first light; a second light source, configured to emit second light; an optical sensor, configured to sense optical data generated according to reflected light of the second light or according to reflected light of the first light; and a control circuit, configured to analyze optical information of the optical data; wherein if the first light source is activated, the second light source is de-activated and the control circuit determines variation of the optical information is larger than a variation threshold, the control circuit changes the first light source to be non-activated and the second light source to be activated.

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Patent Owner(s)

Patent OwnerAddress
PIXART IMAGING INC5F NO 5 INNOVATION ROAD I HSINCHU SCIENCE PARK HSIN-CHU

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Hui-Hsuan Hsin-Chu, TW 90 339
Lim, Wan Piang Penang, MY 6 1
Ng, Muan Sian Penang, MY 3 1

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