Method and device for calculating consumed lifespan

1. A method for calculating a consumed lifespan, comprising followings steps:

controlling an electric motor of a purifier to rotate at a predetermined speed;

acquiring a value of a sampled parameter of the electric motor rotating at the predetermined speed, the sampled parameter being at least one of a sampled current and a sampled voltage of the electric motor; and

determining a consumed lifespan of the purifier according to the acquired value of the sampled parameter and a pre-defined corresponding relationship, wherein the pre-defined corresponding relationship is used for storing relations between values of the sampled parameter and consumed lifespans, the relations between values of the sampled parameter and consumed lifespans are obtained under a condition that the electric motor of the purifier rotates at the predetermined speed, and the determined consumed lifespan is in positive correlation with the acquired value of the sampled parameter.

2. The method of claim 1 , wherein the step of determining a consumed lifespan of the purifier according to the acquired value of the sampled parameter comprises:

retrieving the pre-defined corresponding relationship; and

searching for a consumed lifespan corresponding to the acquired value of the sampled parameter in the pre-defined corresponding relationship.

3. The method of claim 2 , wherein the method further comprises following steps:

controlling the electric motor of the purifier to rotate at the predetermined speed;

measuring a first sampled parameter of the electric motor and a second sampled parameter of the electric motor rotating at the predetermined speed, the first sampled parameter being a value of the sampled parameter when the purifier is operated with a new filter core, and the second sampled parameter being a value of the sampled parameter when the purifier is operated with the filter core reaching an end of its rated service life;

determining a range between the first sampled parameter and the second sampled parameter; and

defining a corresponding relationship between the values in the range and consumed lifespans as the pre-defined corresponding relationship.

4. The method of claim 3 , wherein when the consumed lifespans are indicated in percentages, the step of defining a corresponding relationship between the values in the range and consumed lifespans comprises:

dividing the range into 100 equal parts to obtain a value of each of the parts; and

determining a consumed lifespan in percentage for the value of each of the parts according to a proportion of the value to the range to obtain the corresponding relationship.

5. The method of claim 1 , wherein the step of acquiring a value of a sampled parameter of the electric motor comprises:

when the sample parameter is a sampled current of the electric motor, acquiring a value of the sampled voltage of the electric motor; and

dividing the value of the sampled voltage by a resistance of the electric motor to obtain the value of the sampled parameter.

6. The method of claim 2 , wherein the step of acquiring a value of a sampled parameter of the electric motor comprises:

when the sample parameter is a sampled current of the electric motor, acquiring a value of the sampled voltage of the electric motor; and

dividing the value of the sampled voltage by a resistance of the electric motor to obtain the value of the sampled parameter.

7. The method of claim 3 , wherein the step of acquiring a value of a sampled parameter of the electric motor comprises:

when the sample parameter is a sampled current of the electric motor, acquiring a value of the sampled voltage of the electric motor; and

dividing the value of the sampled voltage by a resistance of the electric motor to obtain the value of the sampled parameter.

8. The method of claim 4 , wherein the step of acquiring a value of a sampled parameter of the electric motor comprises:

when the sample parameter is a sampled current of the electric motor, acquiring a value of the sampled voltage of the electric motor; and

dividing the value of the sampled voltage by a resistance of the electric motor to obtain the value of the sampled parameter.

9. A device for calculating a consumed lifespan, comprising:

a processor; and

a memory for storing instructions executable by the processor;

wherein the processor is configured to perform:

controlling an electric motor of a purifier to rotate at a predetermined speed;

acquiring a value of a sampled parameter of the electric motor rotating at the predetermined speed, the sampled parameter being at least one of a sampled current and a sampled voltage of the electric motor; and

determining a consumed lifespan of the purifier according to the acquired value of the sampled parameter and a pre-defined corresponding relationship, wherein the pre-defined corresponding relationship is used for storing relations between values of the sampled parameter and consumed lifespans, the relations between values of the sampled parameter and consumed lifespans are obtained under a condition that the electric motor of the purifier rotates at the predetermined speed, and the determined consumed lifespan is in positive correlation with the acquired value of the sampled parameter.

10. The device of claim 9 , wherein determining a consumed lifespan of the purifier according to the acquired value of the sampled parameter comprises:

retrieving the pre-defined corresponding relationship; and

searching for a consumed lifespan corresponding to the acquired value of the sampled parameter in the pre-defined corresponding relationship.

11. The device of claim 10 , wherein the processor is further configured to perform:

controlling the electric motor of the purifier to rotate at the predetermined speed;

measuring a first sampled parameter of the electric motor and a second sampled parameter of the electric motor rotating at the predetermined speed, the first sampled parameter being a value of the sampled parameter when the purifier is operated with a new filter core, and the second sampled parameter being a value of the sampled parameter when the purifier is operated with the filter core reaching an end of its rated service life;

determining a range between the first sampled parameter and the second sampled parameter; and

defining a corresponding relationship between the values in the range and consumed lifespans as the pre-defined corresponding relationship.

12. The device of claim 11 , wherein when the consumed lifespans are indicated in percentages, defining a corresponding relationship between the values in the range and consumed lifespans comprises:

dividing the range into 100 equal parts to obtain a value of each of the parts; and

determining a consumed lifespan in percentage for the value of each of the parts according to a proportion of the value to the range to obtain the corresponding relationship.

13. The device of claim 9 , wherein acquiring a value of a sampled parameter of the electric motor comprises:

when the sample parameter is a sampled current of the electric motor, acquiring a value of the sampled voltage of the electric motor; and

dividing the value of the sampled voltage by a resistance of the electric motor to obtain the value of the sampled parameter.

14. The device of claim 10 , wherein acquiring a value of a sampled parameter of the electric motor comprises:

when the sample parameter is a sampled current of the electric motor, acquiring a value of the sampled voltage of the electric motor; and

dividing the value of the sampled voltage by a resistance of the electric motor to obtain the value of the sampled parameter.

15. The device of claim 11 , wherein acquiring a value of a sampled parameter of the electric motor comprises:

when the sample parameter is a sampled current of the electric motor, acquiring a value of the sampled voltage of the electric motor; and

dividing the value of the sampled voltage by a resistance of the electric motor to obtain the value of the sampled parameter.

16. A non-transitory computer-readable storage medium having stored therein instructions that, when executed by a processor of a purifier, causes the purifier to perform a method for calculating a consumed lifespan, the method comprising the following steps:

controlling an electric motor of a purifier to rotate at a predetermined speed;

acquiring a value of a sampled parameter of the electric motor rotating at the predetermined speed, the sampled parameter being at least one of a sampled current and a sampled voltage of the electric motor; and

determining a consumed lifespan of the purifier according to the acquired value of the sampled parameter and a pre-defined corresponding relationship, wherein the pre-defined corresponding relationship is used for storing relations between values of the sampled parameter and consumed lifespans, the relations between values of the sampled parameter and consumed lifespans are obtained under a condition that the electric motor of the purifier rotates at the predetermined speed, and the determined consumed lifespan is in positive correlation with the acquired value of the sampled parameter.