US 11,690,490 B2
Auto clean machine and auto clean machine control method
Guo-Zhen Wang, Hsin-Chu (TW); and Ting-Yang Chang, Hsin-Chu (TW)
Assigned to PixArt Imaging Inc., Hsin-Chu (TW)
Filed by PixArt Imaging Inc., Hsin-Chu (TW)
Filed on Jul. 8, 2020, as Appl. No. 16/924,138.
Prior Publication US 2022/0007908 A1, Jan. 13, 2022
Int. Cl. A47L 9/28 (2006.01); A47L 11/40 (2006.01); G01B 11/02 (2006.01); G05D 1/02 (2020.01); A47L 9/00 (2006.01)
CPC A47L 9/2826 (2013.01) [A47L 9/009 (2013.01); A47L 11/4011 (2013.01); A47L 11/4061 (2013.01); G01B 11/02 (2013.01); G05D 1/0238 (2013.01); A47L 2201/04 (2013.01); A47L 2201/06 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An auto clean machine, comprising:
a height computing device; and
an obstacle determining device;
wherein the height computing device is turned on to compute a height or an overhang height of an obstacle when the obstacle determining device determines the obstacle exists in a predetermined region of the auto clean machine;
wherein the height computing device does not compute the height and the overhang height when the obstacle determining device does not determine the obstacle exists in the predetermined region;
wherein the height computing device comprises:
a first light source, configured to emit first light;
an optical sensor, configured to sense first optical data generated according to the first light; and
a processing circuit, configured to compute a height or an overhang height of the obstacle based on the first optical data;
wherein the first light source is turned on when the obstacle determining device determines the obstacle exists in the predetermined region;
wherein the first light source is turned off when the obstacle determining device does not determine the obstacle exists in the predetermined region;
wherein the obstacle determining device comprises the optical sensor and the processing circuit, and further comprises:
a second light source, configured to emit second light;
wherein the optical sensor senses second optical data generated according to the second light;
wherein the processing circuit determines whether the obstacle exists in the predetermined region or not based on the second optical data.