CN113521893A - Method and device for detecting blockage of filter screen, electronic equipment and storage medium - Google Patents
Method and device for detecting blockage of filter screen, electronic equipment and storage medium Download PDFInfo
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- CN113521893A CN113521893A CN202110771300.XA CN202110771300A CN113521893A CN 113521893 A CN113521893 A CN 113521893A CN 202110771300 A CN202110771300 A CN 202110771300A CN 113521893 A CN113521893 A CN 113521893A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0084—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours provided with safety means
- B01D46/0086—Filter condition indicators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/429—Means for wireless communication
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/44—Auxiliary equipment or operation thereof controlling filtration
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/04—Signal transfer or data transmission arrangements
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/14—Arrangements for detecting or measuring specific parameters
- D06F34/20—Parameters relating to constructional components, e.g. door sensors
Abstract
The embodiment of the disclosure discloses a method and a device for detecting blockage of a filter screen, electronic equipment and a storage medium. The filter screen is arranged in an air duct, and air flow flows through the air duct through rotation of the fan, and the method comprises the following steps: acquiring the current value of a target working parameter of the fan, wherein the current values of the target working parameter corresponding to different blockage degrees are different under the condition that the blockage degree of the filter screen is smaller than a preset blockage degree; and determining whether the filter screen is blocked or not based on the current value of the target working parameter and the comparison value of the target working parameter. The embodiment of the disclosure provides a novel method for detecting the blockage of a filter screen, which can find that the filter screen is blocked in time.
Description
Technical Field
The present disclosure relates to the field of blockage detection technologies, and in particular, to a method and an apparatus for detecting blockage of a filter screen, an electronic device, and a storage medium.
Background
In the prior art, a filter screen has a very wide application scene.
For example, in a washing and drying machine, a dryer and other devices, a filter screen is generally provided. However, when the above-mentioned equipment is used for a period of time, the filter screen will be full of thread scraps and hair scraps, which not only reduces the air intake of the equipment, but also affects the use effect of the equipment.
At present, due to the installation of a filter screen and the structural design, a user can hardly find the blockage condition of the filter screen in time. The filter screen can not be cleaned in time usually, the using effect of equipment is influenced, the user experience is influenced, and even the user complaints are caused.
Disclosure of Invention
In view of this, in order to solve the technical problem of how to find the filter screen is blocked in time, embodiments of the present disclosure provide a method and an apparatus for detecting the blockage of the filter screen, an electronic device, and a storage medium.
In a first aspect, an embodiment of the present disclosure provides a method for detecting blockage of a filter screen, where the filter screen is disposed in an air duct, and an air flow flows through the air duct by rotation of a fan, and the method includes:
acquiring the current value of a target working parameter of the fan, wherein the current values of the target working parameter corresponding to different blockage degrees are different under the condition that the blockage degree of the filter screen is smaller than a preset blockage degree;
and determining whether the filter screen is blocked or not based on the current value of the target working parameter and the comparison value of the target working parameter.
Optionally, in the method according to any embodiment of the present disclosure, the determining whether the filter screen is blocked based on the current value of the target operating parameter and the comparison value of the target operating parameter includes:
calculating the ratio of the current value of the target working parameter to the comparison value of the target working parameter;
if the ratio is greater than or equal to a preset threshold value, determining that the filter screen is blocked;
and if the ratio is smaller than the preset threshold value, determining that the filter screen is not blocked.
Optionally, in the method according to any embodiment of the present disclosure, the comparison value of the target operating parameter is determined as follows:
acquiring a set of static pressure values of the air duct and a set of values of target operating parameters of the fan under a plurality of different blockage degrees, wherein each blockage degree in the plurality of different blockage degrees corresponds to at least one static pressure value of the air duct and at least one value of the target operating parameters of the fan;
determining a value relationship between the static pressure value of the air duct and the value of the target working parameter of the air duct based on the static pressure value set and the value set of the target working parameter;
and determining a comparison value of the target working parameter based on the static pressure value of the air duct and the value relation when the filter screen is in the critical blockage state.
Optionally, in the method of any embodiment of the present disclosure, the predetermined blockage degree is determined based on the value relationship.
Optionally, in the method according to any embodiment of the present disclosure, the obtaining a current value of a target operating parameter of the wind turbine includes:
and when the fan is in a fixed frequency state, acquiring the value of the working parameter of the fan after the fan is started and rotated for a preset time, and taking the acquired value of the working parameter as the current value of the target working parameter.
Optionally, in the method according to any embodiment of the present disclosure, the fan is in a frequency conversion state, the frequency conversion state corresponds to a wind gear sequence in which a wind speed increases or decreases, and the comparison value of the target operating parameter represents: the value range of the target working parameter under the condition that the fan can start to operate; and
the above-mentioned current value of obtaining the target operating parameter of above-mentioned fan includes:
determining the value of the working parameter after the first gear is started for a preset time period aiming at the first gear in the gear sequence, and taking the obtained value of the working parameter as the current value of the target working parameter of the fan under the condition that the first gear is operated; and
the determining whether the filter screen is blocked based on the current value of the target operating parameter and the comparison value of the target operating parameter includes:
and determining whether the filter screen is blocked or not based on whether the current value of the target working parameter belongs to the value range of the target working parameter or not.
Optionally, in the method of any embodiment of the present disclosure, the reference value of the target operating parameter further includes a rated value of the target operating parameter; and
the method further comprises the following steps:
under the condition that the fan is determined not to be blocked, taking a sequence consisting of other wind gears except the first wind gear in the wind gear sequence as a wind gear subsequence, sequentially selecting the wind gears from the wind gear subsequence according to the sequence of the wind gears indicated by the wind gear subsequence, and executing the following blockage determination steps based on the selected wind gears: calculating the ratio of the value of the working parameter of the fan after the selected wind shield is started for a preset time to the rated value of the target working parameter; and if the calculated ratio is greater than or equal to a preset threshold value, determining that the filter screen is blocked.
Optionally, in the method according to any embodiment of the present disclosure, if the calculated ratio is smaller than the preset threshold, a next wind gear is selected from the wind gear subsequence, and the congestion determination step is continuously performed based on a most recently selected wind gear.
Optionally, in the method of any embodiment of the present disclosure, the target operating parameter includes an operating current or an operating power.
In a second aspect, an embodiment of the present disclosure provides a blockage detection device for a filter screen, where the filter screen is disposed in an air duct, and an air flow flows through the air duct by rotating a fan, and the device includes:
an obtaining unit configured to obtain a current value of a target operating parameter of the fan, wherein the current values of the target operating parameter corresponding to different clogging degrees are different when the clogging degree of the filter screen is smaller than a predetermined clogging degree;
and the determining unit is configured to determine whether the filter screen is blocked or not based on the current value of the target working parameter and the comparison value of the target working parameter.
Optionally, in an apparatus according to any embodiment of the present disclosure, the determining unit includes:
a calculation subunit configured to calculate a ratio of a current value of the target operating parameter to a comparison value of the target operating parameter;
a first determining subunit configured to determine that the filter screen is clogged if the ratio is greater than or equal to a preset threshold;
a second determining subunit configured to determine that the filter screen is not clogged if the ratio is smaller than the preset threshold.
Optionally, in the apparatus according to any embodiment of the present disclosure, the comparison value of the target operating parameter is determined as follows:
acquiring a set of static pressure values of the air duct and a set of values of target operating parameters of the fan under a plurality of different blockage degrees, wherein each blockage degree in the plurality of different blockage degrees corresponds to at least one static pressure value of the air duct and at least one value of the target operating parameters of the fan;
determining a value relationship between the static pressure value of the air duct and the value of the target working parameter of the air duct based on the static pressure value set and the value set of the target working parameter;
and determining a comparison value of the target working parameter based on the static pressure value of the air duct and the value relation when the filter screen is in the critical blockage state.
Optionally, in the apparatus according to any embodiment of the present disclosure, the predetermined blockage degree is determined based on the value relationship.
Optionally, in an apparatus according to any embodiment of the present disclosure, the acquiring unit includes:
and the acquisition subunit is configured to acquire the value of the working parameter of the fan after the fan is started and rotated for a preset time period when the fan is in a fixed frequency state, and take the acquired value of the working parameter as the current value of the target working parameter.
Optionally, in the apparatus according to any embodiment of the present disclosure, the fan is in a frequency conversion state, the frequency conversion state corresponds to a wind gear sequence in which a wind speed increases or decreases, and the comparison value of the target operating parameter represents: the value range of the target working parameter under the condition that the fan can start to operate; and
the above-mentioned acquisition unit includes:
a third determining subunit, configured to determine, for a first gear in the sequence of gears, a value of the operating parameter after the first gear is started for a predetermined time period, and use the obtained value of the operating parameter as a current value of a target operating parameter of the fan in a case where the first gear is operated; and
the determining unit includes:
and the fourth determining subunit is configured to determine whether the filter screen is blocked or not based on whether the current value of the target working parameter belongs to the value range of the target working parameter or not.
Optionally, in the apparatus according to any embodiment of the present disclosure, the reference value of the target operating parameter further includes a rated value of the target operating parameter; and
the above-mentioned device still includes:
a first selecting unit, configured to, when it is determined that the fan is not blocked, take a sequence of other wind gears in the wind gear sequence except for the first wind gear as a wind gear subsequence, sequentially select wind gears from the wind gear subsequence according to an order of the wind gears indicated by the wind gear subsequence, and perform the following blockage determining step based on the selected wind gears: calculating the ratio of the value of the working parameter of the fan after the selected wind shield is started for a preset time to the rated value of the target working parameter; and if the calculated ratio is greater than or equal to a preset threshold value, determining that the filter screen is blocked.
Optionally, in an apparatus according to any embodiment of the present disclosure, the apparatus further includes:
a second selecting unit configured to select a next wind gear from the wind gear subsequence if the calculated ratio is smaller than the preset threshold value, and to continue to perform the congestion determining step based on a most recently selected wind gear.
Optionally, in the apparatus of any embodiment of the present disclosure, the target operating parameter includes an operating current or an operating power.
In a third aspect, an embodiment of the present disclosure provides an electronic device, including:
a memory for storing a computer program;
a processor for executing the computer program stored in the memory, and when the computer program is executed, the method of any embodiment of the clogging detection method for a filter screen of the first aspect of the present disclosure is implemented.
In a fourth aspect, the present disclosure provides a computer readable medium, and when being executed by a processor, the computer program implements the method of any embodiment of the method for detecting clogging of a filter screen according to the first aspect.
In a fifth aspect, embodiments of the present disclosure provide a computer program comprising computer readable code which, when run on an apparatus, causes a processor in the apparatus to execute instructions for implementing the steps in the method according to any one of the embodiments of the method for detecting clogging of a filter screen according to the first aspect described above.
In the method for detecting clogging of a filter screen provided by the embodiment of the present disclosure, the filter screen is disposed in an air duct, and an air flow flows through the air duct by rotation of a fan. Therefore, the current value of the target working parameter of the fan is obtained, wherein under the condition that the blockage degree of the filter screen is smaller than the preset blockage degree, the current values of the target working parameter corresponding to different blockage degrees are different, and then whether the filter screen is blocked or not is determined based on the current value of the target working parameter and the comparison value of the target working parameter.
The technical solution of the present disclosure is further described in detail by the accompanying drawings and examples.
Drawings
Other features, objects and advantages of the disclosure will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a diagram illustrating an exemplary system architecture of a method for detecting clogging of a filter screen or an apparatus for detecting clogging of a filter screen according to an embodiment of the present disclosure;
fig. 2 is a flowchart of a method for detecting clogging of a filter screen according to an embodiment of the present disclosure;
FIGS. 3A and 3B are schematic diagrams of one application scenario for the embodiment of FIG. 2;
fig. 4 is a flowchart of another method for detecting clogging of a filter screen according to an embodiment of the present disclosure;
fig. 5A is a schematic diagram illustrating a value relationship between a steady current and a static pressure value provided by an embodiment of the present disclosure;
fig. 5B is a schematic diagram of a stable current detection method provided by an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a blockage detection device for a filter screen according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of an electronic device provided in an embodiment of the present disclosure.
Detailed Description
Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of parts and steps, numerical expressions, and values set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise.
It will be understood by those within the art that the terms "first," "second," and the like in the embodiments of the present disclosure are used merely to distinguish one object, step, device, or module from another object, and do not denote any particular technical meaning or logical order therebetween.
It is also understood that in embodiments of the present disclosure, "a plurality" may refer to two or more and "at least one" may refer to one, two or more.
It is also to be understood that any reference to any component, data, or structure in the embodiments of the disclosure, may be generally understood as one or more, unless explicitly defined otherwise or stated otherwise.
In addition, the term "and/or" in the present disclosure is only one kind of association relationship describing an associated object, and means that three kinds of relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in the present disclosure generally indicates that the former and latter associated objects are in an "or" relationship.
It should also be understood that the description of the various embodiments of the present disclosure emphasizes the differences between the various embodiments, and the same or similar parts may be referred to each other, so that the descriptions thereof are omitted for brevity.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
It should be noted that, in the present disclosure, the embodiments and features of the embodiments may be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Fig. 1 is a diagram illustrating an exemplary system architecture of a method for detecting clogging of a filter screen or an apparatus for detecting clogging of a filter screen according to an embodiment of the present disclosure.
As shown in fig. 1, the system architecture 100 may include at least one of the electronic devices 101, 102, 103. Optionally, when the number of electronic devices that the system architecture 100 may include is greater than or equal to 2, the system architecture 100 may further include a network 103, and the network 103 may provide a medium for communication links between at least two of the electronic devices 101, 102, 103. Network 103 may include various connection types, such as wired, wireless communication links, or fiber optic cables, to name a few.
The electronic devices 101, 102, 103 may interact with each other via the network 103 to receive or transmit data and the like. Here, at least one of the electronic devices 101, 102, and 103 may be an execution subject of each step in the clogging detection method of the filter screen described in the embodiment of the present disclosure.
It should be noted that an execution main body of the method for detecting clogging of a filter screen provided in the embodiment of the present disclosure may be hardware or software, and is not limited specifically herein.
In addition, the execution subject of the method for detecting the blockage of the filter screen provided by the embodiment of the disclosure may be one or more electronic devices, for example, when the execution subject of the method for detecting the blockage of the filter screen provided by the embodiment of the disclosure is a plurality of electronic devices, the method for detecting the blockage of the filter screen provided by the embodiment of the disclosure may be executed by at least two electronic devices in cooperation with each other.
In addition, the electronic device may be an electronic device (e.g., a system having a drying function, such as a washing and caring machine or a clothes dryer) having a filter screen, an air duct, and a fan, wherein the filter screen is disposed in the air duct, and air flows through the air duct by rotation of the fan, or an electronic device (e.g., a server or a user device) having no filter screen, air duct, or fan but capable of interacting with the device having the filter screen, air duct, and fan.
It should be understood that the number of electronic devices and networks in fig. 1 is merely illustrative. There may be any number of electronic devices and networks, as desired for implementation. Furthermore, when the execution subject of the method for detecting the blockage of the filter screen provided by the embodiment of the present disclosure does not need to interact with other electronic devices, the above system architecture 100 may only include the execution subject of the method for detecting the blockage of the filter screen, and not include other electronic devices and networks.
Fig. 2 shows a flow 200 of a method for detecting clogging of a filter screen according to an embodiment of the present disclosure. The filter screen is arranged in the air duct, and the air flow flows through the air duct through the rotation of the fan. The method for detecting the blockage of the filter screen comprises the following steps:
In this embodiment, an execution main body of the method for detecting the blockage of the filter screen (for example, an electronic device such as the washing and drying all-in-one machine and the dryer shown in fig. 1) may obtain the current value of the target operating parameter of the fan from other electronic devices or locally in a wired or wireless manner.
And when the blockage degree of the filter screen is smaller than the preset blockage degree, the current values of the target working parameters corresponding to different blockage degrees smaller than the preset blockage degree are different.
In some optional implementations of the present embodiment, the target operating parameter includes an operating current or an operating power.
As an example, the target operating parameter may be an operating current, an operating power, and both the operating current and the operating power.
It can be understood that in the above alternative implementation, the target operating parameter includes an operating current or an operating power, and since the operating current and the operating power are obtained without adding an additional measuring device, the cost of detecting the blockage of the filter screen is reduced.
Alternatively, the target operating parameter may be a temperature of the fan when the fan is rotated for a predetermined time.
In some optional implementation manners of this embodiment, when the fan is in a constant frequency state, the executing main body may execute the step 201 in the following manner:
and acquiring the value of the working parameter of the fan after the fan is started and rotated for a preset time, and taking the acquired value of the working parameter as the current value of the target working parameter.
It can be understood that, when the fan is in the fixed frequency state, the value of the working parameter of the fan after the fan is started and rotated for the predetermined time period can be regarded as the value of the working parameter of the fan in the stable state, so that the result of determining whether the filter screen is blocked in the subsequent steps can be more accurate based on the value of the working parameter of the fan after the fan is started and rotated for the predetermined time period.
In this embodiment, the execution body may determine whether the filter screen is clogged based on the current value of the target operating parameter and the comparison value of the target operating parameter.
In some optional implementation manners of this embodiment, the executing main body may execute the step 202 in the following manner:
first, a ratio of a current value of the target operating parameter to a reference value of the target operating parameter is calculated.
Then, if the ratio is larger than or equal to a preset threshold value, determining that the filter screen is blocked; and if the ratio is smaller than the preset threshold value, determining that the filter screen is not blocked.
It can be understood that, in the above alternative implementation manner, whether the filter screen is blocked is determined by calculating the ratio of the current value of the target operating parameter to the comparison value of the target operating parameter, so that the complexity of determining whether the filter screen is blocked is reduced, and the accuracy of determining whether the filter screen is blocked is improved.
Optionally, the executing main body may also execute the step 202 in the following manner:
first, a ratio of the comparison value of the target operating parameter to the current value of the target operating parameter is calculated.
Then, if the ratio is smaller than or equal to a preset threshold value, determining that the filter screen is blocked; and if the ratio is larger than the preset threshold value, determining that the filter screen is not blocked.
Alternatively, the control value of the target operating parameter may also be a value of the target operating parameter measured at a predetermined time period (e.g., 1 minute) before or after the time of obtaining the current value of the target operating parameter.
Optionally, the executing main body may further execute the step 202 in the following manner:
first, the difference between the current value of the target operating parameter and the comparison value of the target operating parameter is calculated, and then the ratio of the difference to the comparison value of the target operating parameter is calculated.
Then, if the ratio is larger than or equal to a preset threshold value, determining that the filter screen is blocked; and if the ratio is smaller than the preset threshold value, determining that the filter screen is not blocked.
In some optional implementation manners of this embodiment, the comparison value of the target operating parameter may be determined by the execution subject or other electronic device in the following manner:
first, a set of static pressure values of the air duct and a set of values of target operating parameters of the fan at a plurality of different blockage levels are obtained. Wherein each of the plurality of different blockage levels corresponds to at least one static pressure value of the air duct and a value of at least one target operating parameter of the fan.
And then, determining the value relationship between the static pressure value of the air duct and the value of the target working parameter of the air duct based on the static pressure value set and the value set of the target working parameter.
Here, curve fitting may be performed on the set of static pressure values and the set of values of the target operating parameter, so that a fitting result is used as a value relationship between the static pressure value of the air duct and the value of the target operating parameter of the air duct. Or determining a functional relation between the static pressure value of the air duct and the target working parameter of the air duct based on the static pressure value set and the target working parameter value set, and taking the obtained functional relation as a value relation between the static pressure value of the air duct and the target working parameter value of the air duct.
And finally, determining a comparison value of the target working parameter based on the static pressure value of the air duct and the value relation when the filter screen is in the critical blockage state. Wherein the state of critical occlusion may be a predetermined occlusion state.
As an example, when the value relationship is represented by a fitting result, a value of a target working parameter corresponding to a static pressure value of the air duct when the filter screen is in a critical blockage state may be determined in an image corresponding to the fitting result, so that the determined value of the target working parameter is used as a comparison value of the target working parameter.
As another example, when the value relationship is represented by a functional relation, a value of the target operating parameter corresponding to the static pressure value of the air duct in the state where the filter screen is in the critical blockage, which is calculated based on the functional relation, may be used as a comparison value of the target operating parameter.
It can be understood that, in the above alternative implementation manner, the comparison value of the target working parameter may be determined based on a value relationship between the static pressure value of the air duct and the value of the target working parameter of the air duct, so that the comparison values of different target working parameters may be set according to different blockage states, so that the blockage detection method may be applicable to more devices with different structures, and the accuracy of the blockage detection method of the filter screen of each device may be improved.
In some optional implementations of this embodiment, the predetermined blockage degree is determined based on the value relationship. As an example, the predetermined clogging degree may be a clogging degree of the filter screen characterized by a state in which the filter screen is in a critical clogging state.
Alternatively, the reference value of the target operating parameter may be a value set empirically.
In some optional implementation manners of this embodiment, when the fan is in a frequency conversion state, the executing main body may execute the step 201 in the following manner:
and determining the value of the working parameter after the first gear is started for a preset time period aiming at the first gear in the gear sequence, and taking the obtained value of the working parameter as the current value of the target working parameter of the fan under the condition that the first gear is operated.
On this basis, the executing body may execute the step 202 by adopting the following steps:
and determining whether the filter screen is blocked or not based on whether the current value of the target working parameter belongs to the value range of the target working parameter or not.
Specifically, if the current value of the target working parameter belongs to the value range of the target working parameter, it can be determined that the filter screen is not blocked; and if the current value of the target working parameter does not belong to the value range of the target working parameter, determining that the filter screen is blocked.
Wherein, the frequency conversion state corresponds to a wind gear sequence with wind speed increasing or wind speed decreasing, and the comparison value of the target working parameter represents: and the value range of the target working parameter is obtained under the condition that the fan can start to operate.
It can be understood that the above optional implementation manner realizes the detection of whether the filter screen is blocked or not under the first wind gear of the fan in the frequency conversion state. Therefore, more precise blockage detection is realized by distinguishing the running state (variable frequency or fixed frequency) of the fan from the wind gear.
In some application scenarios of the above alternative implementation, the comparison value of the target operating parameter further includes a rated value of the target operating parameter. On this basis, the execution main body may further perform the following steps:
under the condition that the fan is determined not to be blocked, taking a sequence consisting of other wind gears except the first wind gear in the wind gear sequence as a wind gear subsequence, sequentially selecting the wind gears from the wind gear subsequence according to the sequence of the wind gears indicated by the wind gear subsequence, and executing the following blockage determination steps based on the selected wind gears: calculating the ratio of the value of the working parameter of the fan after the selected wind shield is started for a preset time to the rated value of the target working parameter; and if the calculated ratio is greater than or equal to a preset threshold value, determining that the filter screen is blocked.
In some cases of the application scenario, if the calculated ratio is smaller than the preset threshold, then selecting a next wind gear from the sub-sequence of wind gears, and continuing to perform the congestion determination step based on the last selected wind gear, that is: calculating the ratio of the value of the working parameter of the fan after the selected wind shield is started for a preset time to the rated value of the target working parameter; and if the calculated ratio is greater than or equal to a preset threshold value, determining that the filter screen is blocked.
It can be understood that, under the above application scenario, it can be determined one by one whether the filter screen is blocked under each wind shield. Therefore, whether the filter screen is blocked or not can be detected more accurately and accurately.
With continuing reference to fig. 3A and 3B, fig. 3A and 3B are schematic diagrams of an application scenario of the clogging detection method of the filter screen according to the present embodiment. In fig. 3A, the dryer has a filter screen, a fan, an air inlet duct set, and a program controller module. The filter screen is arranged in the air duct, and air flow flows through the air duct through rotation of the fan. The programmer module may be used to perform steps in a method of detecting clogging of a filter screen. For example, as shown in fig. 3B, the dryer 310 obtains a current value 301 of a target operating parameter of the fan (e.g., a current value of an operating current in a steady operating state) through the above-mentioned program controller module. The dryer 310, via the programmer module, can then determine whether the filter screen is clogged based on the current value 301 of the target operating parameter and the comparison value 302 of the target operating parameter (e.g., the rated value of the operating current). In the illustration, the dryer 310, via the program controller module, can determine that the filter screen is jammed based on the current value 301 of the target operating parameter and the comparison value 302 of the target operating parameter, so as to generate a prompt message 303 indicating that the filter screen is jammed.
In the method for detecting clogging of a filter screen provided in the above embodiment of the present disclosure, the filter screen is disposed in an air duct, and an air flow flows through the air duct by rotation of a fan. Therefore, the current value of the target working parameter of the fan is obtained, wherein under the condition that the blockage degree of the filter screen is smaller than the preset blockage degree, the current values of the target working parameter corresponding to different blockage degrees are different, and then whether the filter screen is blocked or not is determined based on the current value of the target working parameter and the comparison value of the target working parameter.
With further reference to fig. 4, fig. 4 shows a flow of yet another embodiment of a method of clogging detection of a filter screen. Here, the execution main body of the method for detecting the blockage of the filter screen is taken as a drying device which has a drying function and is provided with the filter screen, the fan, the air inlet duct set and the program controller module, and the method for detecting the blockage of the filter screen is exemplarily described. The filter screen is arranged in the air duct, and air flow flows through the air duct through rotation of the fan. The flow of the filter screen blockage detection method comprises the following steps:
in step 401, it is determined whether the drying apparatus is running the drying program. If yes, go to step 403; otherwise, go to step 402.
And step 402, the drying equipment does not perform filter screen detection.
In step 403, the program controller in the drying device determines whether the drying fan is a fixed-frequency fan. If yes, go to step 405; if not, go to step 404.
And step 404, determining that a fan in the drying equipment is a variable frequency fan and the rotating speed is variable.
And step 409, judging that the filter screen does not reach the condition needing to be cleaned.
In step 413, the user has processed.
Specifically, when the fixed-frequency fan is used for operation, the method for detecting the blockage of the filter screen may include the following steps:
firstly, a current static pressure value p is obtained1Stable working current I of lower fanStable. Wherein the working current I is stabilizedStableFor example, may be the current value of the operating current after a predetermined time (e.g., 2 minutes) of fan start-up. In addition, the filter is in a brand new state (e.g., factory shipment)Former) static pressure value (i.e. initial static pressure value) p0The rated current (i.e. the comparison value of the working current) of the corresponding fan is IForehead (forehead)。
And then, carrying out information processing and judgment on the acquired data to determine whether the filter screen is blocked.
In hardware, the blockage detection device of the filter screen can comprise the following modules:
and the acquisition module is used for judging the wind resistance condition of the system by utilizing the current value change of the stable operation of the fan under different static pressures.
The judgment processing module is used for utilizing the program controller to acquire the stable working current of the drying fan corresponding to the current static pressure value of the air duct where the filter screen is positioned and the rated working current of the drying fan corresponding to the initial static pressure value; according to IStableAnd IForehead (forehead)And (4) judging whether the filter screen is blocked or not.
A prompt module: the method comprises the steps of displaying panel light prompt, code prompt and sending blockage prompt to user terminals such as a mobile phone and the like so as to prompt a user to clean.
Here, the fixed frequency fan has a constant rotating speed; the integrated program controller controls the drying fan to stably operate for Xmin, and the detection module obtains the stable working current I of the fan under the current static pressure value PStable(ii) a Judgment of IStable/IForehead (forehead)Whether greater than or equal to 1.2. If the conditions are met, judging that the filter screen needs to be cleaned; the system presets a normal operation static pressure range: [ P ]a，Pb]The corresponding relation between the static pressure range preset by the system and capable of normally operating and the rated current is [0.8I ]Forehead (forehead)，1.2IForehead (forehead)](ii) a If the condition is met, sending a prompt signal to remind a user to clean the filter screen; if the condition is not met, the filter screen detection is ended.
In addition, when the variable frequency fan is used for operation, the method for detecting the blockage of the filter screen can comprise the following steps:
firstly, a current static pressure value p is obtained1Stable working current I of lower fanStable. Wherein the working current I is stabilizedStableFor example, the current of the working current after the preset time (for example, 2 minutes) for starting the fanThe value is obtained. Furthermore, the static pressure value (i.e. the initial static pressure value) p in a completely new state of the filter (e.g. before factory shipment)0The rated current (i.e. the comparison value of the working current) of the corresponding fan is IForehead (forehead)。
And then, carrying out information processing and judgment on the acquired data to determine whether the filter screen is blocked.
In addition, the clogging detecting device of the filter screen may include the following modules:
and the acquisition module is used for judging the wind resistance condition of the system by utilizing the current value change of the stable operation of the fan under different static pressures.
The judgment processing module is used for utilizing the program controller to acquire the stable working current of the drying fan corresponding to the current static pressure value of the air duct where the filter screen is located and the rated working current of the drying fan corresponding to the initial static pressure value; according to IStableAnd IForehead (forehead)And (4) judging whether the filter screen is blocked or not.
And the prompt module comprises a display panel light prompt, a code prompt and a blockage prompt which is sent to a user terminal such as a mobile phone and the like so as to prompt a user to clean.
Next, please refer to fig. 5A, wherein fig. 5A is a schematic diagram illustrating a value relationship between the steady current and the static pressure provided by the embodiment of the disclosure.
The fan stable current detection method comprises the following steps: after the fan runs stably for X minutes, at X1The average value of the current is taken within min and is marked as I1(ii) a At X2The average value of the current within min is taken as I2(ii) a At X3The average value of the current within min is taken as I3… … wherein X1May be at a predetermined time (e.g., 20 seconds) after reaching X minutes, X2Can be in the range of up to X1A time, X, spaced a predetermined time (e.g. 20 seconds) after the time3Can be in the range of up to X2A time that is spaced a predetermined time (e.g., 20 seconds) after the time, and so on.
The stable current calculation formula:
wherein x in the above formula characterizes the number of times the current is taken.
In addition, for the variable frequency fan, according to different wind grades, the I of each wind gradeStableI can be calculated as aboveStable. Fig. 5B is a schematic diagram of a stable current detection method provided by the embodiment of the present disclosure.
Here, in the case where the clogging degree of the filter screen is smaller than a predetermined clogging degree (for example, the clogging degree corresponding to the current peak in fig. 5A), the current values of the target operating parameters corresponding to different clogging degrees are different. For example, the static pressure value p in FIG. 5Aa、p0、pbRespectively corresponding to different target operating parameters (the operating current values are respectively 0.8I)Forehead (forehead)、IForehead (forehead)±5％IForehead (forehead)、1.2IForehead (forehead)) And also respectively correspond to different blockage degrees.
It should be noted that, besides the contents described above, the present embodiment can also be implemented in a manner corresponding to that described in the embodiment described in the above method, and details are not described herein.
In the method for detecting the blockage of the filter screen in the embodiment, the control panel and the drying fan can be integrated together through the integrated program controller, and after the drying program is started, the control panel judges the wind resistance condition of the current system by measuring the working current of the stable operation of the drying fan (or calculating the working power of the drying fan, which is described by taking the working current as an example). Setting rated current of fan as I under initial static pressure value (static pressure value of filter screen in brand new state) in storage medium of integrated program controllerForehead (forehead)(ii) a Current static pressure value p1Stable working current I of lower fanStableStable working current of fan IStableWith rated current IForehead (forehead)The relationship of (1) is: i isStable＝IForehead (forehead)Plus or minus 5 percent (considering the fluctuation condition of the actual voltage, the stable current and the rated current are within the deviation range of 5 percent); simultaneously setting the preset normal operation static pressure range of the system as Pa，Pb]The corresponding relation between the static pressure range preset by the system and capable of normally operating and the rated current is [0.8I ]Forehead (forehead)，1.2IForehead (forehead)]I.e. PaCorresponds to 0.8IForehead (forehead)，PbCorresponds to 1.2IForehead (forehead). Then, obtaining the current stable working current I of the fan in the air duct where the filter screen is locatedStableAccording to the current stable working current I of the fanStableWith initial static pressure value p0Lower rated current IForehead (forehead)Performing ratio judgment, if IStable/IForehead (forehead)If the filter screen is larger than or equal to 1.2, judging that the filter screen needs to be cleaned; if IStable/IForehead (forehead)And if the water content is less than 1.2, judging that the filter screen does not reach the condition needing to be cleaned.
The embodiment can judge whether the thread scraps of the filter screen are seriously accumulated according to the stable working current of the drying fan and the rated current under the initial static pressure value in the using process of the washing and protecting machine and the drying system of the clothes dryer. The accumulation of the filter screen thread scraps can be detected in time so as to remind a user of cleaning in time, and the phenomena that the air outlet resistance is increased, the air quantity is reduced and the heat exchange effect of the two devices is poor after the accumulation of the filter screen thread scraps is prevented from affecting the drying and nursing effects; the drying performance of the drying device is ensured, and the use experience of a user is greatly improved.
With further reference to fig. 6, as an implementation of the methods shown in the above figures, the present disclosure provides an embodiment of a clogging detection apparatus for a filter screen, which corresponds to the above method embodiment, and which may include the same or corresponding features as the above method embodiment and produce the same or corresponding effects as the above method embodiment, in addition to the features described below. The device can be applied to various electronic equipment.
As shown in fig. 6, the filter screen of the blockage detection device 600 of the filter screen of the present embodiment is disposed in an air duct, and the air flow flows through the air duct by the rotation of the fan. The above apparatus 600 includes: an acquisition unit 601 and a determination unit 602. The acquiring unit 601 is configured to acquire a current value of a target operating parameter of the fan, where the current values of the target operating parameter corresponding to different blockage degrees are different when the blockage degree of the filter screen is smaller than a predetermined blockage degree; a determining unit 602, configured to determine whether the filter screen is clogged based on the current value of the target operating parameter and the comparison value of the target operating parameter.
In this embodiment, the obtaining unit 601 of the filter screen blockage detection apparatus 600 may obtain a current value of a target operating parameter of the fan, where the current values of the target operating parameters corresponding to different blockage degrees are different when the blockage degree of the filter screen is smaller than a predetermined blockage degree.
In this embodiment, the determining unit 602 may determine whether the filter screen is clogged based on the current value of the target operating parameter and the comparison value of the target operating parameter.
In some optional implementations of this embodiment, the determining unit 602 includes:
a calculating subunit (not shown in the figure) configured to calculate a ratio of a current value of the target operating parameter to a comparison value of the target operating parameter;
a first determining subunit (not shown in the figures) configured to determine that the filter screen is blocked if the ratio is greater than or equal to a preset threshold;
a second determining subunit (not shown in the figures) configured to determine that the filter screen is not blocked if the ratio is smaller than the preset threshold.
In some optional implementations of the present embodiment, the comparison value of the target operating parameter is determined by:
acquiring a set of static pressure values of the air duct and a set of values of target operating parameters of the fan under a plurality of different blockage degrees, wherein each blockage degree in the plurality of different blockage degrees corresponds to at least one static pressure value of the air duct and at least one value of the target operating parameters of the fan;
determining a value relationship between the static pressure value of the air duct and the value of the target working parameter of the air duct based on the static pressure value set and the value set of the target working parameter;
and determining a comparison value of the target working parameter based on the static pressure value of the air duct and the value relation when the filter screen is in the critical blockage state.
In some optional implementations of this embodiment, the obtaining unit 601 includes:
and the acquisition subunit (not shown in the figures) is configured to acquire the value of the working parameter of the fan after the fan is started and rotated for a preset time period when the fan is in the fixed-frequency state, and take the acquired value of the working parameter as the current value of the target working parameter.
In some optional implementation manners of this embodiment, the fan is in a frequency conversion state, the frequency conversion state corresponds to a wind gear sequence in which a wind speed increases or decreases, and the comparison value of the target operating parameter represents: the value range of the target working parameter under the condition that the fan can start to operate; and
the acquisition unit 601 includes:
a third determining subunit (not shown in the figures), configured to determine, for a first gear in the sequence of gears, a value of the operating parameter after a predetermined time period of starting the first gear, and use the obtained value of the operating parameter as a current value of a target operating parameter of the fan in the case of operating the first gear; and
the determining unit 602 includes:
and a fourth determining subunit (not shown in the figure) configured to determine whether the filter screen is blocked based on whether the current value of the target operating parameter belongs to the value range of the target operating parameter.
In some optional implementations of this embodiment, the comparison value of the target operating parameter further includes a nominal value of the target operating parameter; and
the apparatus 600 further comprises:
a first selecting unit (not shown in the figures) configured to, in a case where it is determined that the fan is not blocked, take a sequence of other wind gears in the wind gear sequence except for the first wind gear as a wind gear subsequence, sequentially select wind gears from the wind gear subsequence according to an order of the wind gears indicated by the wind gear subsequence, and perform the following blockage determining step based on the selected wind gears: calculating the ratio of the value of the working parameter of the fan after the selected wind shield is started for a preset time to the rated value of the target working parameter; if the calculated ratio is greater than or equal to a preset threshold value, determining that the filter screen is blocked;
a second selecting unit (not shown in the figures) configured to select a next wind gear from the wind gear subsequence if the calculated ratio is smaller than the preset threshold value, and to continue to perform the congestion determining step based on the last selected wind gear.
In some optional implementations of the present embodiment, the target operating parameter includes an operating current or an operating power.
In some optional implementations of this embodiment, the predetermined blockage degree is determined based on the value relationship.
In the device 600 provided by the above embodiment of the present disclosure, the filter screen is disposed in an air duct, and an air flow flows through the air duct by rotation of the fan. The obtaining unit 601 may obtain a current value of a target operating parameter of the fan, where the current values of the target operating parameters corresponding to different degrees of clogging are different when the degree of clogging of the filter screen is less than a predetermined degree of clogging, and then the determining unit 602 may determine whether the filter screen is clogged based on the current value of the target operating parameter and a comparison value of the target operating parameter. Therefore, the novel filter screen blockage detection device is provided, and the filter screen can be found to be blocked in time.
Fig. 7 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure, where the electronic device 700 shown in fig. 7 includes: at least one processor 701, memory 702, and at least one network interface 704 and other user interfaces 703. The various components in the electronic device 700 are coupled together by a bus system 705. It is understood that the bus system 705 is used to enable communications among the components. The bus system 705 includes a power bus, a control bus, and a status signal bus in addition to a data bus. But for clarity of illustration the various busses are labeled in figure 7 as the bus system 705.
The user interface 703 may include, among other things, a display, a keyboard, or a pointing device (e.g., a mouse, trackball, touch pad, or touch screen, among others.
It is to be understood that the memory 702 in embodiments of the present disclosure may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (ddr Data Rate SDRAM, ddr SDRAM), Enhanced Synchronous SDRAM (ESDRAM), synchlronous SDRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 702 described herein is intended to comprise, without being limited to, these and any other suitable types of memory.
In some embodiments, memory 702 stores the following elements, executable units or data structures, or a subset thereof, or an expanded set thereof: an operating system 7021 and application programs 7022.
The operating system 7021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, for implementing various basic services and processing hardware-based tasks. The application 7022 includes various applications, such as a Media Player (Media Player), a Browser (Browser), and the like, for implementing various application services. Programs that implement methods in accordance with embodiments of the present disclosure can be included within application program 7022.
In the embodiment of the present disclosure, by calling a program or an instruction stored in the memory 702, specifically, a program or an instruction stored in the application 7022, the processor 701 is configured to execute steps in the method for detecting a blockage of a filter screen provided in the embodiments of the method, for example, the steps include: acquiring the current value of a target working parameter of the fan, wherein the current values of the target working parameter corresponding to different blockage degrees are different under the condition that the blockage degree of the filter screen is smaller than a preset blockage degree; and determining whether the filter screen is blocked or not based on the current value of the target working parameter and the comparison value of the target working parameter.
The method disclosed by the embodiment of the present disclosure may be applied to the processor 701, or implemented by the processor 701. The processor 701 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 701. The Processor 701 may be a general-purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present disclosure may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present disclosure may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software elements in the decoding processor. The software elements may be located in ram, flash, rom, prom, or eprom, registers, among other storage media that are well known in the art. The storage medium is located in the memory 702, and the processor 701 reads the information in the memory 702 and performs the steps of the above method in combination with the hardware thereof.
It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the Processing units may be implemented within one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units configured to perform the functions described herein, or a combination thereof.
For a software implementation, the techniques described herein may be implemented by means of units performing the functions described herein. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.
The electronic device provided in this embodiment may be the electronic device shown in fig. 7, and may perform all the steps of the method for detecting the blockage of the filter screen, so as to achieve the technical effect of the method for detecting the blockage of the filter screen.
The disclosed embodiments also provide a storage medium (computer-readable storage medium). The storage medium herein stores one or more programs. Among others, the storage medium may include volatile memory, such as random access memory; the memory may also include non-volatile memory, such as read-only memory, flash memory, a hard disk, or a solid state disk; the memory may also comprise a combination of memories of the kind described above.
When one or more programs in the storage medium are executable by one or more processors, the method for detecting clogging of a filter screen executed on the electronic device side is realized.
The processor is used for executing the communication program stored in the memory so as to realize the following steps of the method for detecting the blockage of the filter screen, which is executed on the electronic equipment side: acquiring the current value of a target working parameter of the fan, wherein the current values of the target working parameter corresponding to different blockage degrees are different under the condition that the blockage degree of the filter screen is smaller than a preset blockage degree; and determining whether the filter screen is blocked or not based on the current value of the target working parameter and the comparison value of the target working parameter.
Those of skill would further appreciate that the various illustrative components and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied in hardware, a software module executed by a processor, or a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The above-mentioned embodiments, objects, technical solutions and advantages of the present disclosure are described in further detail, it should be understood that the above-mentioned embodiments are merely illustrative of the present disclosure and are not intended to limit the scope of the present disclosure, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.
Claims (10)
1. A method for detecting blockage of a filter screen is characterized in that the filter screen is arranged in an air duct, and air flow flows through the air duct by rotation of a fan, and the method comprises the following steps:
acquiring the current value of a target working parameter of the fan, wherein the current values of the target working parameter corresponding to different blockage degrees are different under the condition that the blockage degree of the filter screen is smaller than a preset blockage degree;
and determining whether the filter screen is blocked or not based on the current value of the target working parameter and the comparison value of the target working parameter.
2. The method of claim 1, wherein determining whether the filter screen is clogged based on the current value of the target operating parameter and the comparison value of the target operating parameter comprises:
calculating the ratio of the current value of the target working parameter to the comparison value of the target working parameter;
if the ratio is larger than or equal to a preset threshold value, determining that the filter screen is blocked;
and if the ratio is smaller than the preset threshold value, determining that the filter screen is not blocked.
3. The method of claim 1, wherein the control value of the target operating parameter is determined by:
acquiring a set of static pressure values of the air duct and a set of values of target operating parameters of the fan under a plurality of different blockage degrees, wherein each blockage degree in the plurality of different blockage degrees corresponds to at least one static pressure value of the air duct and at least one value of the target operating parameters of the fan;
determining a value relationship between the static pressure value of the air duct and the value of the target working parameter of the air duct based on the static pressure value set and the set of the values of the target working parameter;
and determining a comparison value of a target working parameter based on the static pressure value of the air duct and the value relation when the filter screen is in a critical blockage state.
4. The method of any one of claims 1-3, wherein said obtaining a current value of a target operating parameter of the wind turbine comprises:
and when the fan is in a fixed frequency state, acquiring the value of the working parameter of the fan after the fan is started and rotated for a preset time, and taking the acquired value of the working parameter as the current value of the target working parameter.
5. A method according to any one of claims 1 to 3, wherein the wind turbine is in a variable frequency state corresponding to a sequence of wind steps with increasing wind speed or decreasing wind speed, and the reference value of the target operating parameter is indicative of: the value range of the target working parameter is within the condition that the fan can be started to operate; and
the obtaining of the current value of the target working parameter of the fan comprises:
determining the value of the working parameter after the first gear is started for a preset time period aiming at the first gear in the gear sequence, and taking the obtained value of the working parameter as the current value of the target working parameter of the fan under the condition that the first gear is operated; and
the determining whether the filter screen is blocked or not based on the current value of the target working parameter and the comparison value of the target working parameter comprises the following steps:
and determining whether the filter screen is blocked or not based on whether the current value of the target working parameter belongs to the value range of the target working parameter or not.
6. The method of claim 5, wherein the reference value of the target operating parameter further comprises a nominal value of the target operating parameter; and
the method further comprises the following steps:
under the condition that the fan is determined not to be blocked, taking a sequence formed by other wind gears except the first wind gear in the wind gear sequence as a wind gear subsequence, sequentially selecting the wind gears from the wind gear subsequence according to the sequence of the wind gears indicated by the wind gear subsequence, and executing the following blockage determination steps based on the selected wind gears: calculating the ratio of the value of the working parameter of the fan after the selected wind shield is started for a preset time to the rated value of the target working parameter; if the calculated ratio is greater than or equal to a preset threshold value, determining that the filter screen is blocked;
if the calculated ratio is less than the preset threshold, selecting a next gear from the subsequence of gears, and continuing to perform the blockage-determining step based on the most recently selected gear.
7. The method of any of claims 1-3, wherein the target operating parameter comprises an operating current or an operating power.
8. The utility model provides a jam detection device of filter screen, its characterized in that, the filter screen sets up in the wind channel, rotate through the fan in the wind channel and the air current of flowing through, the device includes:
the acquisition unit is configured to acquire the current value of a target working parameter of the fan, wherein the current values of the target working parameter corresponding to different blockage degrees are different under the condition that the blockage degree of the filter screen is smaller than a preset blockage degree;
a determination unit configured to determine whether the filter screen is clogged based on the current value of the target operating parameter and the comparison value of the target operating parameter.
9. An electronic device, comprising:
a memory for storing a computer program;
a processor for executing a computer program stored in the memory, and when executed, implementing the method of any of the preceding claims 1-7.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the method of any one of the preceding claims 1 to 7.
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Application publication date: 20211022 |