Method and system for reminding replacement of filter of vacuum cleaner and vacuum cleaner

A system for reminding a replacement of a filter of a vacuum cleaner, comprising:

• a motor, a rotating speed detection apparatus, a controller, and a reminding apparatus;
• wherein,
• the motor is coupled with the rotating speed detection apparatus, and the rotating speed detection apparatus is used to detect rotating speed information of the motor;
• the rotating speed detection apparatus is coupled with the controller, and the controller is coupled with the reminding apparatus;
• the rotating speed detection apparatus feeds back the detected rotating speed information to the controller, the controller processes the rotating speed information to obtain a rotating speed difference of the motor within a set time interval, compares the rotating speed difference with a preset rotating speed difference threshold according to a working parameter of the vacuum cleaner to obtain a comparison result, wherein, the working parameter of the vacuum cleaner comprises:
• a non-constant motor power operating parameter, and controls the reminding apparatus to remind a user to replace the filter or not according to the comparison result;
• and
• if so, the controller controls the reminding apparatus to remind the user to replace the filter;
• wherein the rotating speed difference is compared with the preset rotating speed difference threshold according to the non-constant motor power operating parameter to obtain a comparison result;
• and wherein the non-constant motor power operating parameter is set when the motor is in a non-constant power operating mode, when the motor in the non-constant power operating mode is working, a rotating speed of the motor changes with a power supply voltage from time to time;
• and a modeling between the power supply voltage and the rotating speed is performed for different power supply voltages.

A vacuum cleaner, comprising:

• a motor, a rotating speed detection apparatus, a controller, and a reminding apparatus;
• wherein,
• the motor is coupled with the rotating speed detection apparatus, and the rotating speed detection apparatus is used to detect rotating speed information of the motor;
• the rotating speed detection apparatus is coupled with the controller, and the controller is coupled with the reminding apparatus;
• the rotating speed detection apparatus feeds back the detected rotating speed information to the controller, the controller processes the rotating speed information to obtain a rotating speed difference of the motor within a set time interval, compares the rotating speed difference with a preset rotating speed difference threshold according to a working parameter of the vacuum cleaner to obtain a comparison result, wherein, the working parameter of the vacuum cleaner comprises a non-constant motor power operating parameter, and controls the reminding apparatus to remind a user to replace the filter or not according to a comparison result;
• and
• if so, the controller controls the reminding apparatus to remind the user to replace the filter;
• wherein the rotating speed difference is compared with the preset rotating speed difference threshold according to the non-constant motor power operating parameter to obtain a comparison result;
• and wherein the non-constant motor power operating parameter is set when the motor is in a non-constant power operating mode, when the motor in the non-constant power operating mode is working, a rotating speed of the motor changes with a power supply voltage from time to time;
• and a modeling between the power supply voltage and the rotating speed is performed for different power supply voltages.