US 12,458,189 B2
Vacuum cleaner
Massimo Camplani, Bristol (GB); Andrew Collingwood Watson, Gloucester (GB); David Alan Millington, Swindon (GB); Nathan Lawson McLean, Bristol (GB); Nolan Thomas McCann, Oakton, VA (US); and Thomas Richard De Lange, Swindon (GB)
Assigned to Dyson Technology Limited, Wiltshire (GB)
Appl. No. 18/014,484
Filed by Dyson Technology Limited, Wiltshire (GB)
PCT Filed Jun. 16, 2021, PCT No. PCT/GB2021/051509
§ 371(c)(1), (2) Date Jan. 5, 2023,
PCT Pub. No. WO2022/008873, PCT Pub. Date Jan. 13, 2022.
Claims priority of application No. 2010660 (GB), filed on Jul. 10, 2020.
Prior Publication US 2023/0255422 A1, Aug. 17, 2023
Int. Cl. A47L 9/28 (2006.01)
CPC A47L 9/2826 (2013.01) [A47L 9/2821 (2013.01); A47L 9/2842 (2013.01); A47L 9/2847 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A vacuum cleaner comprising:
a vacuum motor;
one or more sensors configured to generate sensor signals associated with the vacuum cleaner; and
a controller configured to:
process the generated sensor signals to determine a type of surface on which the vacuum cleaner is being operated by comparing the generated sensor signals to surface type model stored on a memory of the controller, the surface type model being defined by a mapping between stored sensor signals and surface types, the mapping having a plurality of clusters, each cluster being defined by a plurality of the stored signals indicative of the vacuum cleaner operating on a respective type of surface, each cluster corresponding to a different type of surface;
control the power of the vacuum motor in dependence on the determined type of surface; and
update the surface type model based on the generated sensor signals and/or the determined type of surface.