WO2022068638A1

WO2022068638A1 - Blockage determination method and apparatus for air duct in cleaning equipment, and equipment, and storage medium

Info

Publication number: WO2022068638A1
Application number: PCT/CN2021/119534
Authority: WO
Inventors: 吴军; 孙佳佳
Original assignee: 追觅创新科技(苏州)有限公司
Priority date: 2020-09-29
Filing date: 2021-09-22
Publication date: 2022-04-07
Also published as: CN112168065A; CN112168065B

Abstract

A blockage determination method and apparatus for an air duct (101) in cleaning equipment, and equipment, and a storage medium. The method comprises: obtaining an operating parameter of a fan (103), the operating parameter comprising at least one of an operating voltage, an operating current, and a fan rotating speed of the fan (103), or the operating parameter comprising at least one of a fan power and the fan rotating speed of the fan (103) (301); and determining a degree of blockage of an air duct (101) according to the operating parameter (302). The degree of blockage of the air duct (101) can be determined according to the operating parameter of the fan (103), and a blockage condition of the cleaning equipment can be determined without adding a sensor to the cleaning equipment. Therefore, the structure of the cleaning equipment can be simplified, and the accuracy is further improved.

Description

Method, device, device and storage medium for determining blockage of air duct in cleaning equipment

technical field

The present application relates to a method, device, device and storage medium for determining the blockage of an air duct in a cleaning device, and belongs to the technical field of computers.

Background technique

A filter assembly is usually installed in the vacuum cleaner to filter the dust in the air. Using the vacuum cleaner for a long time will cause the filter components in it to be blocked, which will reduce the ventilation rate of the air duct of the vacuum cleaner and affect the vacuuming effect of the vacuum cleaner. Therefore, it is an urgent problem to detect whether the air duct in the vacuum cleaner is blocked.

A typical method for detecting the blockage of the air duct in the vacuum cleaner includes: using an air pressure sensor to detect the blockage of the filter assembly in the air duct of the vacuum cleaner, using an infrared sensor to detect the dust accumulation of the dust box in the air duct of the vacuum cleaner; combining the blockage of the filter assembly and the dust accumulation of the dust box, etc. to determine if the air duct is blocked.

However, to determine the blockage of the air duct through the sensor, a corresponding sensor needs to be installed in the vacuum cleaner, which leads to the problem of complex structure of the vacuum cleaner; and when the sensor fails, it is impossible to determine the blockage of the air duct.

SUMMARY OF THE INVENTION

The present application provides a method, device, device and storage medium for determining the clogging degree of an air duct in a cleaning device, which can solve the problem that the clogging of an air duct cannot be determined when a sensor fails.

This application provides the following technical solutions:

In a first aspect, a method for determining blockage of an air duct in a cleaning device is provided, the method comprising:

Acquire the working parameters of the fan in the cleaning device, where the working parameters include at least one of the working voltage, the working current, and the fan speed of the fan; or, the working parameters include the fan power of the fan and the fan speed of the fan. at least one;

The blockage degree of the air passage in the cleaning device is determined according to the working parameter.

Optionally, determining the degree of blockage of the air duct in the cleaning device according to the working parameter includes:

Input the working parameters into a preset blockage degree calculation model to obtain the blockage degree.

Optionally, inputting the working parameters into a preset blockage degree calculation model to obtain the blockage degree includes:

When the model parameter of the blockage degree calculation model includes one of the working voltage, the working current and the fan speed, control the working voltage, the working current and the fan speed to remove all the parameters. The other two parameters other than the one parameter are unchanged; the one parameter is input into the blockage degree calculation model to obtain the blockage degree;

or,

When the model parameters of the blockage degree calculation model include two parameters of the working voltage, the working current and the fan speed, control the working voltage, the working current and the fan speed to remove all the parameters. The other parameter other than the above two parameters remains unchanged; the two parameters are input into the blockage degree calculation model to obtain the blockage degree;

or,

When the model parameters of the blockage degree calculation model include the working voltage, the working current and the fan speed, the working voltage, the working current and the fan speed are all input into the blockage degree calculation model , to obtain the blockage degree;

or,

When the model parameter of the blockage degree calculation model includes one parameter of the fan power and the fan speed, control the fan power and the fan speed to another parameter except the one parameter The parameter remains unchanged; the one parameter is input into the blockage degree calculation model to obtain the blockage degree;

or,

When the model parameters of the blockage degree calculation model include the fan power and the fan speed, both the fan power and the fan speed are input into the blockage degree calculation model to obtain the blockage degree.

The working parameter includes one parameter among the working voltage, the working current and the rotational speed of the fan, and controls the working voltage, the working current and the rotational speed of the fan except the one parameter. The other two parameters are unchanged; the blockage degree is determined based on the one parameter;

or,

The working parameter includes one parameter of the fan power and the fan speed, and the other parameter other than the one parameter in the fan power and the fan speed is controlled to remain unchanged; based on the A parameter determines the degree of blockage.

Optionally, the working parameter is the working voltage, and the blockage degree is negatively correlated with the working voltage;

Alternatively, the working parameter is the working current, and the blockage degree is negatively correlated with the working current;

Alternatively, the working parameter is the rotational speed of the blower, and the blockage degree is positively correlated with the rotational speed of the blower;

Alternatively, the working parameter is the power of the fan, and the degree of blockage is negatively correlated with the rotational speed of the fan.

Optionally, after the degree of blockage of the air duct in the cleaning device is determined according to the working parameter, the method further includes:

comparing the blockage level to a target level threshold;

When the blockage degree is greater than the target degree threshold, determining that the air duct is blocked;

When the blockage degree is less than or equal to the target degree threshold, it is determined that the air duct is not blocked.

Optionally, before the comparing the blockage degree with the target degree threshold, the method further includes:

The target level threshold is determined according to the working state of the fan.

Optionally, when the blockage degree is greater than the target degree threshold, the method further includes:

Output congestion alarm information;

The output mode of the alarm information includes at least one of the following: output through the flashing indicator light, output through an audio player, and output to a designated device through a communication component.

In a second aspect, a cleaning device is provided, the cleaning device comprising:

Air ducts, including air inlets and outlets;

a filter assembly located in the air duct for filtering the target medium;

a fan, used for introducing the target medium input from the air inlet into the air duct, and outputting the target medium from the air outlet after passing through the filter assembly, so as to filter the target medium;

a control component for acquiring working parameters of the fan, the working parameters including at least one of working voltage, working current, fan power and fan speed of the fan; and determining the air duct according to the working parameters degree of blockage.

In a third aspect, a device for determining blockage of an air duct in a cleaning device is provided, the device comprising:

a parameter acquisition module, configured to acquire at least one of the working voltage, the working current, and the fan speed of the fan in the cleaning device; or, to obtain at least one of the fan power and the fan speed of the fan;

A degree determination module, configured to determine the degree of blockage of the air duct in the cleaning device according to the working parameter.

In a fourth aspect, a device for determining blockage of an air duct in a cleaning device is provided, the device includes a processor and a memory; the memory stores a program, and the program is loaded and executed by the processor to implement the first aspect. The method for determining the blockage of the air duct in the cleaning equipment described above.

According to a fifth aspect, a computer-readable storage medium is provided, and a program is stored in the storage medium, and the program is loaded and executed by the processor to implement the method for determining the blockage of an air duct in a cleaning device according to the first aspect.

The beneficial effect of the present application is: by obtaining the working parameters of the fan in the cleaning equipment, the working parameters include at least one of the working voltage, the working current and the rotating speed of the fan; or, the working parameters include the fan power of the fan and the rotating speed of the fan. At least one; determine the degree of blockage of the air duct in the cleaning equipment according to the working parameters; it can solve the problem of installing a corresponding sensor in the cleaning equipment to determine the blockage of the air duct, resulting in a complex structure of the cleaning equipment, and when the sensor fails, it is impossible to determine the air duct. Since the blockage of the air duct can be determined according to the working parameters of the fan, the blockage of the cleaning equipment can be determined without adding a sensor to the cleaning equipment, so the structure of the cleaning equipment can be simplified; The blockage degree of the air outlet can be determined by using the working parameters of the fan. The determination result of the blockage degree has nothing to do with the normal operation of the sensor. It can ensure that the blockage degree of the air outlet can still be determined when the sensor fails. Accuracy of the degree of air duct blockage.

In addition, by entering the working parameters into the blockage degree calculation model, the specific value of the blockage degree can be obtained, which can quantify the blockage degree of the air duct and provide users with more detailed blockage information.

In addition, by controlling the two parameters of the working voltage, the working current and the fan speed to remain unchanged, the blockage degree can be directly determined according to one of the parameters, without using the blockage degree calculation model to quantify the blockage degree, which can reduce the complexity of quantifying the blockage degree.

In addition, by determining whether the air duct is blocked according to the degree of blockage, the blockage alarm information is output when it is determined that the blockage occurs; the user can be reminded to replace the filter and clean the dust box in time, thereby improving the working effect of the cleaning equipment.

The above description is only an overview of the technical solutions of the present application. In order to understand the technical means of the present application more clearly and implement them in accordance with the contents of the description, the preferred embodiments of the present application and the accompanying drawings are described in detail below.

Description of drawings

1 is a schematic structural diagram of a cleaning device provided by an embodiment of the present application;

2 is a schematic structural diagram of a cleaning device provided by an embodiment of the present application;

3 is a flowchart of a method for determining blockage of an air duct in a cleaning device provided by an embodiment of the present application;

4 is a flowchart of a method for determining blockage of an air duct in a cleaning device provided by another embodiment of the present application;

5 is a block diagram of a device for determining blockage of an air duct in a cleaning device provided by an embodiment of the present application;

Fig. 6 is a block diagram of an apparatus for determining blockage of an air duct in a cleaning device provided by an embodiment of the present application.

Detailed ways

The specific implementations of the present application will be described in further detail below with reference to the accompanying drawings and embodiments. The following examples are used to illustrate the present application, but are not intended to limit the scope of the present application.

FIG. 1 is a schematic structural diagram of a cleaning device provided by an embodiment of the present application, and the cleaning device may be a sweeper, a vacuum cleaner, or the like. This embodiment does not limit the type of cleaning equipment. As shown in FIG. 1 , the cleaning device includes: an air duct 101 , a filter assembly 102 , a fan 103 and a dust box 104 .

Referring to FIG. 2 , the air duct 101 refers to a passage through which the target medium passes in the cleaning device. The air duct 101 includes an air inlet 201 and an air outlet 202 . The air inlet 201 is the inlet for the target medium to enter the cleaning device from outside the cleaning device, and the air outlet 202 is the outlet for the target medium to be discharged from the cleaning device after being filtered by the air duct 101 . When using the cleaning device, the air inlet 201 is opposite to the object to be cleaned, and the air outlet 202 and the air inlet 201 are communicated with each other through the air duct 101 and are arranged in different positions, for example, the air outlet 202 is located on the housing of the cleaning device. In actual implementation, the position of the air outlet 202 may also be located at other positions, and the position of the air outlet 202 is not limited in this embodiment.

Among them, the target medium refers to the medium entering the cleaning device. Illustratively, the target medium includes a mixture of air and impurities, such as a mixture of air and dust, hair, and/or paper scraps, etc. Of course, the target medium can also be only air.

The filter assembly 102 is installed in the air duct 101 . The filter assembly 102 is used to filter impurities in the target medium. Optionally, the filter assembly 102 includes one or more filters, for example, the filter assembly 102 includes a primary filter, a secondary filter, a tertiary filter, etc., wherein the filter level is based on the target medium in ascending order The subsequent sequence is determined. where one or more filters are of the same or different type. In one example, the filter assembly 102 includes a Hepa filter, so that impurities with smaller diameters can be filtered out and the filtering effect of the target medium can be improved. Of course, when the filter assembly 102 includes multi-stage filters, the size of impurities filtered by the filters at each stage can be reduced step by step, and the present embodiment does not limit the arrangement of the filter assembly 102 .

The inlet of the dust box 104 is communicated with the air duct 101 , and the dust box 104 is adjacent to the filter assembly 102 , so that the impurities filtered by the filter assembly 102 fall into the dust box 104 . The dust box 104 is used for containing the impurities filtered by the filter assembly 102 . Optionally, the number of dust boxes 104 may be one or more.

The fan 103 is used to guide the target medium input from the air inlet 201 into the air duct 101, and then output from the air outlet 202 after passing through the filter assembly 102, so as to filter the target medium. The fan 103 may be an axial-flow fan, a cross-flow fan, a mixed-flow fan, or the like, and the type of the fan is not limited in this embodiment.

During use, the target medium enters the air duct 101 from the air inlet 201, and after being filtered by the filter assembly 102, the impurities in the target medium fall into the dust box 104, and finally the filtered medium is discharged through the air outlet 202.

In the present application, the cleaning device further includes a control assembly (not shown), and the control assembly is connected in communication with the fan 103, so that the fan 103 operates under the control of the control assembly.

The control component is used for: acquiring the working parameters of the fan 103, where the working parameters include at least one of the working voltage, the working current and the rotating speed of the fan; or, the working parameters include at least one of the fan power and the rotating speed of the fan; according to The operating parameters determine the degree of blockage of the air duct.

Figures 1 and 2 take the cleaning device as a sweeper as an example. According to Figures 1 and 2, a cleaning mechanism 203 is installed at the air inlet 201, and the air duct 103 sequentially includes a cleaning mechanism 203, a dust cleaning mechanism 203 from the air inlet 201 to the air outlet 202 Box 104 , filter assembly 102 and fan 103 . During the operation of the cleaning device, the cleaning mechanism 203 cleans the target medium from outside the cleaning device to the air inlet 201 of the cleaning device. After that, the target medium is introduced into the air duct 101 from the air inlet 201 through the fan 103. After the target medium passes through the dust box 104 and the filter assembly 102 in sequence, the filter assembly 102 will filter out the impurities in the target medium, and the impurities will remain in the dust box 104. , the filtered gas is discharged from the air outlet 202 through the filter assembly 102 and the fan 103 . With the increase of the usage time of the cleaning equipment, on the one hand, the impurities attached to the filter assembly 102 will gradually increase, which will gradually cause blockage of the air duct; on the other hand, the impurities contained in the dust box 104 will gradually increase, which will reduce the ventilation flow of the air duct. resulting in blockage of the air duct. At this time, the working parameters of the fan 103 change, and the control component obtains the working parameters of the fan 103 to determine the blockage of the air outlet, replace the filter assembly 102 in time according to the blockage of the air duct, and clean the dust box 104, thereby improving the cleaning equipment. work effect.

It should be added that the cleaning device may further include: a power supply, a communication component, a cleaning component, etc., which are not listed one by one in this embodiment.

According to the above structure, as the usage time of the cleaning equipment increases, the filter assembly may be blocked, and the impurities contained in the dust box gradually increase. Based on this, the cleaning device provided by this application does not need to use sensors to collect the blockage of the filter assembly and the dust accumulation of the dust box, and the blockage of the air outlet can be determined by using the working parameters of the fan, which can reduce the number of sensors used and simplify cleaning. The structure of the device.

Optionally, the present application is described by taking as an example that the execution body of each of the following embodiments is the control component (not shown) in the cleaning device shown in FIG. 1 .

3 is a flowchart of a method for determining blockage of an air duct in a cleaning device provided by an embodiment of the present application, and the method includes at least the following steps:

Step 301: Obtain working parameters of the fan, where the working parameters include at least one of working voltage, working current, and fan speed of the fan; or, the working parameters include at least one of fan power and fan speed.

The way of obtaining the working voltage includes: collecting the working voltage of the fan in real time through a voltage detection circuit in the cleaning device. The voltage detection circuit is respectively connected with the control component and the fan. After collecting the working voltage of the fan, the voltage detection circuit outputs the voltage value of the working voltage to the control component; accordingly, the control component obtains the working voltage.

The way of obtaining the working current includes: collecting the working current of the fan in real time through the current detection circuit in the cleaning device. The current detection circuit is respectively connected with the control component and the fan. After collecting the working current of the fan, the current detection circuit outputs the current value of the working current to the control component; accordingly, the control component obtains the working current.

The way of obtaining the fan power includes: collecting the fan power of the fan in real time through the power detection circuit in the cleaning device. The power detection circuit is respectively connected with the control component and the fan. After collecting the fan power of the fan, the power detection circuit outputs the power value of the fan power to the control component; accordingly, the control component obtains the fan power.

The method of obtaining the rotational speed of the fan includes: detecting the number of rotations of the fan by a sensor installed on the fan; sending the number of rotations to the control component; correspondingly, the control component receives the number of rotations and the rotation duration corresponding to the number of rotations, The ratio between the number of rotations and the duration of rotation is determined as the fan speed. Wherein, the sensor may be a Hall sensor, in this case, a magnet is provided at the fixed position corresponding to the fan; or, the sensor may be a photoelectric sensor, in this case, an optical signal transmitter is provided at the fixed position corresponding to the fan, which is not correct in this embodiment. The type of sensor is limited.

Step 302: Determine the blockage degree of the air duct according to the working parameters.

Optionally, the manner of determining the blockage degree of the air duct according to the working parameters includes but is not limited to at least one of the following:

The first one: input the working parameters into the preset clogging degree calculation model to obtain the clogging degree.

The total power of the fan operation in the cleaning equipment is expressed by the following formula:

P=U×I=T×n+I ² ×r+t×n,

Among them, U is the working voltage of the fan; I is the working current of the fan; T is the effective torque of the fan; n is the speed of the fan; r is the equivalent internal resistance of the heat loss of the fan; t is the equivalent friction torque of the fan loss .

The effective torque T of the fan mainly acts on the target medium to generate suction, and the effective torque is expressed by the following formula:

T=kρn ² ,

Among them, k is the proportional coefficient (k is a constant); ρ is the air density; n is the fan speed.

In the above total power formula, if the heat loss and friction loss of the fan are ignored, the total power formula of the fan can be expressed as: U×I≈kρn ³ .

The air density in the air duct can be expressed by the following formula:

The air density is related to the blockage of the air duct (the blockage of the air duct and the dust accumulation state of the dust box will affect the blockage of the air duct). , the air density in the air duct decreases. Therefore, the degree of blockage of the air duct can be detected by detecting changes in air density. That is, a blockage degree calculation model can be established based on a mathematical model of air density.

Since the blockage degree is negatively correlated with the air density, the blockage degree calculation model can be established based on the following mathematical model:

S=τn ³ /(U×I)

Among them, S represents the degree of clogging, and τ is a constant.

In one example, the model parameters of the blockage degree calculation model include one parameter of the working voltage, the working current and the rotational speed of the fan. At this time, input the working parameters into the preset clogging degree calculation model to obtain the clogging degree corresponding to the working parameters, including: controlling the working voltage, working current and fan speed, the other two parameters except one parameter remain unchanged; A parameter is input into the blockage degree calculation model to obtain the blockage degree.

In this application, model parameters refer to variable parameters in the congestion degree calculation model.

Assuming that the model parameter is the fan speed n, in order to satisfy the above mathematical model, it is necessary to ensure that U×I is a constant, so that the model parameters only include the fan speed. At this time, the calculation model of the blockage degree can be S=An ³ , where A is a constant. Illustratively, A is τ/(U×I). Optionally, the control component can keep U×I constant by controlling the working voltage and working current to be constant; or, can also keep U×I constant by controlling the product of the working voltage and working current to keep constant.

Assuming that the model parameter is the working voltage U, in order to satisfy the above mathematical model, it is necessary to ensure that n ³ /I is a constant, so that the model parameters only include the working voltage. At this time, the calculation model of the blockage degree can be S=B/U, where , B is a constant. Illustratively, B is τn ³ /I. Optionally, the control component can keep n ³ /I constant by controlling the fan speed and the working current ^;

Assuming that the model parameter is the working current I, in order to satisfy the above mathematical model, it is necessary to ensure that n ³ /U is a constant, so that the model parameters only include the fan speed. At this time, the calculation model of the blockage degree can be S=C/I, where , C is a constant. Illustratively, C is τn ³ /U. Optionally, the control component can keep n ³ /U constant by controlling the working voltage and the fan speed to be constant; or, it can also control the ratio of the cube of the fan speed to the working voltage to keep n ³ /U constant.

In another example, the model parameters of the blockage degree calculation model include two parameters in the working voltage, the working current and the rotational speed of the fan. At this time, input the working parameters into the preset clogging degree calculation model, and obtain the clogging degree corresponding to the working parameters, including: controlling the working voltage, the working current and the fan speed, the other parameter except the two parameters remains unchanged; Input the two parameters into the blockage degree calculation model to obtain the blockage degree.

Assuming that the model parameters are the fan speed n and the working voltage U, in order to satisfy the above mathematical model, it is necessary to ensure that the working current I is constant, so that the model parameters only include the fan speed n and the working voltage U. At this time, the blockage degree calculation model can be is S=Dn ³ /U, where D is a constant. Illustratively, D is τ/I.

Assuming that the model parameters are the fan speed n and the working current I, in order to satisfy the above mathematical model, it is necessary to ensure that the working voltage U is constant, so that the model parameters only include the fan speed n and the working current I. At this time, the calculation model of the blockage degree is S=En ³ /I, where E is a constant. Illustratively, E is τ/U.

Assuming that the model parameters are the working current I and the working voltage U, in order to satisfy the above mathematical model, it is necessary to ensure that the fan speed n is constant, so that the model parameters only include the working current I and the working voltage U. At this time, the calculation model of the blockage degree is S=F/UI, where F is a constant. Illustratively, F is τ×n.

In yet another example, the model parameters of the blockage degree calculation model include working voltage, working current and fan speed. At this time, input the working parameters into the preset clogging degree calculation model to obtain the clogging degree corresponding to the working parameters, including inputting the operating voltage, working current and fan speed into the clogging degree calculation model to obtain the clogging degree.

For example, the congestion degree calculation model may be S=τn ³ /UI.

In yet another example, the model parameters of the blockage degree calculation model include one of the fan power and the fan speed. At this time, the working parameters are input into the preset blockage degree calculation model, and the blockage degree corresponding to the working parameters is obtained, including: controlling the fan power and fan speed in addition to one parameter unchanged; Enter the blockage degree calculation model to obtain the blockage degree.

Assuming that the model parameter is the fan speed n, in order to satisfy the above mathematical model, it is necessary to ensure that the product of the working current I and the working voltage U (that is, the fan power) is a constant, so that the model parameters only include the fan speed n. At this time, the degree of blockage The computational model may be S=Gn ³ , where G is a constant. Illustratively, G is τ/UI.

Assuming that the model parameter is the fan power P, in order to satisfy the above mathematical model, it is necessary to ensure that the fan speed n is constant, so that the model parameters only include the fan power P. At this time, the calculation model of the blockage degree can be S=H/P, where , and H is a constant. Illustratively, H is τ×n.

In yet another example, the model parameters of the blockage degree calculation model include fan power and fan speed. At this time, input the working parameters into the preset blockage degree calculation model to obtain the blockage degree corresponding to the work parameters, including: inputting both the fan power and the fan speed into the blockage degree calculation model to obtain the blockage degree.

For example, the blockage degree calculation model may be S=τn ³ /P.

It should be added that the above-mentioned congestion degree calculation model is only schematic, and in actual implementation, a simple transformation can be made based on the establishment principle of the congestion degree calculation model, and the specific model content of the congestion degree calculation model is not limited in this embodiment.

The second type: the working parameters include one parameter of the working voltage, the working current and the fan speed, and the other two parameters except one parameter in the control working voltage, working current and fan speed remain unchanged; determined based on one parameter degree of blockage.

Among them, the working parameter is the working voltage, and the clogging degree is negatively correlated with the working voltage; or, the working parameter is the working current, and the clogging degree has a negative correlation with the working current; or, the working parameter is the fan speed, and the clogging degree has a positive relationship with the fan speed. relationship.

In the second manner, the control component does not need to use the blockage degree calculation model to calculate the blockage degree, but determines the current blockage degree of the air duct according to the corresponding relationship between the blockage degree and the working parameters. For example, the reciprocal of the working voltage is determined as the blockage degree, or the reciprocal of the operating current is determined as the blockage degree, or the fan speed is determined as the blockage degree.

The third type: the working parameters include one of the fan power and the fan speed, and the other parameters other than one of the fan power and fan speed are controlled to remain unchanged; the degree of blockage is determined based on one parameter.

Wherein, the working parameter is the fan speed, and the blockage degree is positively correlated with the fan speed; or, the working parameter is the fan power, and the blockage degree is negatively correlated with the fan power.

The third method has the same principle as the second method. The control component does not need to use the blockage degree calculation model to calculate the blockage degree, but determines the current blockage degree of the air duct according to the corresponding relationship between the blockage degree and the working parameters. For example, the reciprocal of the fan power is determined as the degree of blockage, or the rotational speed of the fan is determined as the degree of blockage.

Optionally, after step 302, the control component may further determine whether the air duct is blocked according to the degree of blockage. Illustratively, the blockage degree is compared with the target degree threshold; when the blockage degree is greater than the target degree threshold, it is determined that the air duct is blocked; when the blockage degree is less than or equal to the target degree threshold, it is determined that the air duct is not blocked.

Optionally, the target level threshold value is fixed, or changes with the change of the working state of the fan. In the following, the two cases are introduced respectively, referring to the first case and the second case below.

The first case: the target degree threshold is fixed. At this time, the target degree threshold may be set by the user; or, it may be set by default in the cleaning device, and this embodiment does not limit the setting method of the target degree threshold. The target level threshold is within the preset value range. For example, the value range is [H _min , H _max ], H _min is the minimum value of the target degree threshold value range, H _max is the maximum value range of the target degree threshold value, at this time, the target degree threshold value H is greater than Equal to H _min and less than or equal to H _max .

The second case: the target degree threshold changes with the change of the working state of the fan.

In the actual use process, as the working time of the fan becomes longer or the working voltage of the fan is too low, the fan will age. At this time, if a fixed target level threshold is used, the determined blockage result may be inaccurate. Based on this, in this embodiment, the cleaning device may determine the target level threshold according to the working time and the working voltage of the fan. At this time, the working state of the fan includes the working time of the fan and the working voltage of the fan.

Among them, the target level threshold determined according to the working time and working voltage of the fan is expressed by the following formula:

h=H+f(VV _rated )-f(T);

f(x)=ax ⁺ bx2+ ^cx3 +...+ ^kxn .

Among them, h is the determined target level threshold; H is the initial value of the target level threshold, H is a constant; V is the current working voltage of the fan; V _rated is the rated working voltage of the fan; f(x) is the n-order fitting formula, the n-order fitting formula is used to compensate the change of the target degree threshold; n is a positive integer; a, b, c, ..., k are all constants.

Optionally, the dynamically determined target level threshold needs to be controlled within a preset value range. At this time, after the target level threshold is determined based on the above formula, the target level threshold is compared with the value range; when the target level threshold is less than the minimum value of the value range, the minimum value of the value range is determined as the final When the target degree threshold is greater than the maximum value of the value range, the maximum value of the value range is determined as the final target degree threshold.

For example, the value range is [H _min , H _max ], if the target degree threshold h<H _min , determine h=H _min ; if the target degree threshold h>H _max , determine h=H _max .

Optionally, when the congestion level is greater than the target level threshold, the control component outputs congestion warning information. The blockage alarm information is used to indicate that the air duct is blocked. Wherein, the output mode of the alarm information includes at least one of the following: output through the flashing indicator light, output through an audio player, and output to a designated device through a communication component.

In order to more clearly understand the method for determining the blockage of the air duct in the cleaning equipment provided by the present application, an example of the method will be described below, referring to FIG. The blockage degree calculation model calculates the blockage degree, and the blockage degree calculation model is S=τn ³ /UI as an example to illustrate, the method at least includes the following steps:

Step 401, controlling the operation of the fan;

Step 402, obtaining the working voltage, working current and rotating speed of the fan;

Step 403, input the working voltage, working current and fan speed into the blockage degree calculation model to obtain the blockage degree;

Step 404, compare the blockage degree with the target degree threshold to determine whether the air duct is blocked; if so, execute step 405; if not, execute step 402 again;

Step 405, output the congestion alarm information.

To sum up, the method for determining the blockage of the air duct in the cleaning device provided in this embodiment can obtain the working parameters of the fan in the cleaning device; determine the degree of blockage of the air duct in the cleaning device according to the working parameters; The sensor is used to determine the blockage of the air duct, which leads to the complex structure of the cleaning equipment, and the problem that the blockage of the air duct cannot be judged when the sensor fails; since the degree of blockage of the air duct can be determined according to the working parameters of the fan, there is no need to Adding a sensor to the equipment can determine the blockage of the cleaning equipment, therefore, the structure of the cleaning equipment can be simplified; in addition, the blockage degree of the air outlet can be determined only by using the working parameters of the fan, and whether the blockage degree is determined and the sensor is normal. Regardless of the work, it can be ensured that the blockage degree of the air duct can still be determined when the sensor fails immediately, so the accuracy of determining the blockage degree of the air duct can be improved.

FIG. 5 is a block diagram of a device for determining blockage of an air duct in a cleaning device provided by an embodiment of the present application. The device includes at least the following modules: a parameter acquisition module 510 and a degree determination module 520 .

A parameter obtaining module 510, configured to obtain at least one of the working voltage, working current, and fan speed of the fan in the cleaning device; or, to obtain at least one of the fan power and the fan speed of the fan;

The degree determination module 520 is used for determining the degree of blockage of the air duct in the cleaning device according to the working parameter.

For relevant details, refer to the above method embodiments.

It should be noted that: when the device for determining the blockage of the air duct in the cleaning equipment provided in the above-mentioned embodiment, when determining the blockage, only the division of the above-mentioned functional modules is used as an example for illustration. In practical applications, the above-mentioned functions can be allocated according to needs. Different functional modules are completed, that is, the internal structure of the device for determining the blockage of the air duct in the cleaning equipment is divided into different functional modules, so as to complete all or part of the functions described above. In addition, the device for determining the blockage of the air duct in the cleaning equipment provided in the above embodiments and the embodiment of the method for determining the blockage of the air duct in the cleaning equipment belong to the same concept.

FIG. 6 is a block diagram of a device for determining blockage of an air duct in a cleaning device provided by an embodiment of the present application, and the device may be the cleaning device shown in FIG. 1 . The apparatus includes at least a processor 601 and a memory 602 .

The processor 601 may include one or more processing cores, such as a 4-core processor, an 8-core processor, and the like. The processor 601 can adopt at least one hardware form among DSP (Digital Signal Processing, digital signal processing), FPGA (Field-Programmable Gate Array, field programmable gate array), PLA (Programmable Logic Array, programmable logic array) accomplish.

Memory 602 may include one or more computer-readable storage media, which may be non-transitory. Memory 602 may also include high-speed random access memory, as well as non-volatile memory, such as one or more disk storage devices, flash storage devices. In some embodiments, a non-transitory computer-readable storage medium in the memory 602 is used to store at least one instruction, and the at least one instruction is used to be executed by the processor 601 to implement the cleaning apparatus provided by the method embodiments of the present application A method for determining the blockage of the stroke duct.

In some embodiments, the device for determining the blockage of the air duct in the cleaning device may optionally further include: a peripheral device interface and at least one peripheral device. The processor 601, the memory 602 and the peripheral device interface can be connected through a bus or a signal line. Each peripheral device can be connected to the peripheral device interface through bus, signal line or circuit board. Illustratively, peripheral devices include, but are not limited to, radio frequency circuits, audio circuits, and power supplies.

Certainly, the device for determining the blockage of the air duct in the cleaning device may further include fewer or more components, which is not limited in this embodiment.

Optionally, the present application further provides a computer-readable storage medium, where a program is stored in the computer-readable storage medium, and the program is loaded and executed by a processor to implement the blockage of the air duct in the cleaning device according to the above method embodiment. Determine the method.

Optionally, the present application further provides a computer product, the computer product includes a computer-readable storage medium, where a program is stored in the computer-readable storage medium, and the program is loaded and executed by a processor to implement the above method embodiments The method for determining the blockage of the air duct in the cleaning equipment.

The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above-described embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be regarded as the scope described in this specification.

The above-mentioned embodiments only represent several embodiments of the present application, and the descriptions thereof are relatively specific and detailed, but should not be construed as a limitation on the scope of the invention patent. It should be noted that, for those skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the scope of protection of the patent of the present application shall be subject to the appended claims.

Claims

A method for determining blockage of an air duct in a cleaning device, characterized in that the method comprises:

Acquire the working parameters of the fan in the cleaning device, where the working parameters include at least one of the working voltage, the working current, and the fan speed of the fan; or, the working parameters include the fan power of the fan and the fan speed of the fan. at least one;

The blockage degree of the air passage in the cleaning device is determined according to the working parameter.
The method according to claim 1, wherein the determining the degree of blockage of the air duct in the cleaning device according to the working parameter comprises:

Input the working parameters into a preset blockage degree calculation model to obtain the blockage degree.
The method according to claim 2, wherein the inputting the working parameters into a preset blockage degree calculation model to obtain the blockage degree comprises:

When the model parameter of the blockage degree calculation model includes one of the working voltage, the working current and the fan speed, control the working voltage, the working current and the fan speed to remove all the parameters. The other two parameters other than the one parameter are unchanged; the one parameter is input into the blockage degree calculation model to obtain the blockage degree;

or,

When the model parameters of the blockage degree calculation model include two parameters of the working voltage, the working current and the fan speed, control the working voltage, the working current and the fan speed to remove all the parameters. The other parameter other than the above two parameters remains unchanged; the two parameters are input into the blockage degree calculation model to obtain the blockage degree;

or,

When the model parameters of the blockage degree calculation model include the working voltage, the working current and the fan speed, the working voltage, the working current and the fan speed are all input into the blockage degree calculation model , to obtain the blockage degree;

or,

When the model parameter of the blockage degree calculation model includes one parameter of the fan power and the fan speed, control the fan power and the fan speed to another parameter except the one parameter The parameters remain unchanged; the one parameter is input into the blockage degree calculation model to obtain the blockage degree;

or,

When the model parameters of the blockage degree calculation model include the fan power and the fan speed, both the fan power and the fan speed are input into the blockage degree calculation model to obtain the blockage degree.
The method according to claim 1, wherein the determining the degree of blockage of the air duct in the cleaning device according to the working parameter comprises:

The working parameter includes one parameter among the working voltage, the working current and the rotational speed of the fan, and controls the working voltage, the working current and the rotational speed of the fan except the one parameter. The other two parameters are unchanged; the blockage degree is determined based on the one parameter;

or,

The working parameter includes one parameter of the fan power and the fan speed, and the other parameter other than the one parameter in the fan power and the fan speed is controlled to remain unchanged; based on the A parameter determines the degree of blockage.
The method of claim 4, wherein:

The working parameter is the working voltage, and the blockage degree is negatively correlated with the working voltage;

Alternatively, the working parameter is the working current, and the blockage degree is negatively correlated with the working current;

Alternatively, the working parameter is the rotational speed of the blower, and the blockage degree is positively correlated with the rotational speed of the blower;

Alternatively, the working parameter is the power of the fan, and the degree of blockage is negatively correlated with the rotational speed of the fan.
The method according to any one of claims 1 to 5, characterized in that, after determining the degree of blockage of the air duct in the cleaning device according to the working parameter, the method further comprises:

comparing the blockage level to a target level threshold;

In the case that the blockage degree is greater than the target degree threshold, determining that the air duct is blocked;

In a case where the blockage degree is less than or equal to the target degree threshold, it is determined that the air duct is not blocked.
The method of claim 6, wherein before the comparing the blockage level with a target level threshold, further comprising:

The target level threshold is determined according to the working state of the fan.
The method according to claim 6, characterized in that, when the blockage degree is greater than the target degree threshold, the method further comprises:

Output congestion alarm information;

The output mode of the alarm information includes at least one of the following: output through the flashing indicator light, output through an audio player, and output to a designated device through a communication component.
A cleaning device, characterized in that the cleaning device comprises:

Air ducts, including air inlets and outlets;

a filter assembly located in the air duct for filtering the target medium;

a fan, used for introducing the target medium input from the air inlet into the air duct, and outputting the target medium from the air outlet after passing through the filter assembly, so as to filter the target medium;

a control component for acquiring working parameters of the fan, the working parameters including at least one of working voltage, working current, fan power and fan speed of the fan; and determining the air duct according to the working parameters degree of blockage.
A device for determining blockage of an air duct in a cleaning device, characterized in that the device comprises a processor and a memory; the memory stores a program, and the program is loaded and executed by the processor to realize the steps of claim 1 to 8. The method for determining the blockage of an air duct in a cleaning device according to any one of the items.
A computer-readable storage medium, characterized in that, a program is stored in the storage medium, and when the program is executed by a processor, the program is used to realize blocking of an air duct in the cleaning device according to any one of claims 1 to 8 Determine the method.