US 12,478,239 B2
Device for conducting motor recognition and protection and vacuum cleaner using the same
Chia-Chang Hsu, Hsinchu County (TW); and Ren-Yuan Yu, Hsinchu County (TW)
Assigned to PROLIFIC TECHNOLOGY INC., Taipei (TW)
Filed by PROLIFIC TECHNOLOGY INC., Taipei (TW)
Filed on May 24, 2023, as Appl. No. 18/201,377.
Claims priority of application No. 111121219 (TW), filed on Jun. 8, 2022.
Prior Publication US 2023/0404346 A1, Dec. 21, 2023
Int. Cl. A47L 9/28 (2006.01); A47L 9/04 (2006.01); G01R 31/34 (2020.01); G01R 31/3835 (2019.01)
CPC A47L 9/2889 (2013.01) [A47L 9/0411 (2013.01); A47L 9/2831 (2013.01); A47L 9/2884 (2013.01); G01R 31/343 (2013.01); G01R 31/3835 (2019.01)] 14 Claims
OG exemplary drawing
 
1. A device for conducting motor recognition and protection, being allowed to be employed in a vacuum cleaner comprising a machine body and a dust suction device, wherein the dust suction device consists of a suction head and a connection tube, and the suction head including a roller brush and a roller brush driving motor; said device comprising:
a current detection circuit, being coupled to the roller brush driving motor for detecting an operation current; and
a microprocessor, being coupled to the current detection circuit;
wherein the microprocessor includes a memory storing an application program, and the application program including instructions, such that in case the application program is executed, the microprocessor being configured for:
receiving the operation current from the current detection circuit in a run-up time period of the roller brush driving motor;
determining a product model of the roller brush driving motor based on the operation current;
deciding a protection parameter set according to the product model; and
conducting a motor protection for the roller brush driving motor after loading at least one motor protection parameter contained by the protection parameter set.