A method and device for detecting clogging of a filter screen

Abstract

An embodiment of the present invention discloses a method and device for detecting the clogging of a filter screen, which relates to the field of household appliances and can reduce costs and improve detection efficiency when detecting the clogging situation of the filter screen. The specific solution is as follows: after a clogging detection sensor emits light of a preset intensity, the reflected light of the filter screen is received, the type of the filter screen is determined according to the intensity of the reflected light, the algorithm and parameters corresponding to the type of the filter screen are determined, and the algorithm and parameters are used to detect the clogging situation of the filter screen. The embodiment of the present invention is used to detect the clogging situation of the filter screen when the distances between different types of filter screens and the clogging detection sensor are the same.

Description

Technical Field

[0001] Embodiments of the present invention relate to the field of household appliances, and in particular, to a method and device for detecting filter clogging. Background Art

[0002] In the prior art, an air conditioner can determine the clogging condition of a filter through a clogging detection sensor installed in an indoor unit, so as to timely remind a user to clean or replace the filter. Among clogging detection sensors, an infrared filter clogging detection sensor is widely used for detecting filter clogging due to characteristics such as simple application and low cost.

[0003] However, air conditioners of different models (such as ducted air conditioners, ceiling-mounted air conditioners, wall-mounted air conditioners, and cabinet air conditioners) use filters with different functions, such as coarse filters, electronic dust collection filters, High Efficiency Particulate Air (HEPA) filters, etc. For different types of filters, different parameters and algorithms are used by the sensor to determine the clogging condition. If different sensors are used to cooperate with different types of filters, it will increase the procurement, production, and operation costs of the sensors and reduce the detection efficiency of the filters. Therefore, how to use the same type of sensor to cooperate with different types of filters is the key to reducing costs and improving efficiency. Summary of the Invention

[0004] The present invention provides a method and device for detecting filter clogging, which can reduce costs and improve detection efficiency when detecting the clogging condition of a filter.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] In a first aspect, the present invention provides a method for detecting filter clogging, which is applied to a device for detecting filter clogging. The device for detecting filter clogging includes a clogging detection sensor. The method may include: after the clogging detection sensor emits light with a preset intensity, receiving the reflected light of the filter; determining the type of the filter according to the intensity of the reflected light; determining the algorithm and parameters corresponding to the type of the filter; and using the algorithm and parameters to detect the clogging condition of the filter.

[0007] In combination with the first aspect, in a possible implementation manner, determining the type of the filter according to the intensity of the reflected light includes: searching for at least one pre-stored light intensity range, determining the target light intensity range of the intensity of the reflected light; and determining the type of the filter according to the target light intensity range.

[0008] Combined with the first aspect and the above possible implementation manners, in another possible implementation manner, it may further include: if the intensity of the reflected light does not belong to any of at least one light intensity range, record the number of failures, and re-emit light with a preset intensity to determine the type of the filter screen; when the number of failures reaches a preset value, output an alarm message, and the alarm message is used to prompt the user that the detection device for filter screen clogging has failed.

[0009] Combined with the first aspect and the above possible implementation manners, in another possible implementation manner, the light emitted by the clogging detection sensor is any one of infrared light, laser, and visible light.

[0010] In a second aspect, the present invention provides a detection device for filter screen clogging, and the detection device for filter screen clogging may include: a clogging detection sensor, a receiving unit, a determining unit, and a detecting unit. The receiving unit is configured to receive the reflected light of the filter screen after the clogging detection sensor emits light with a preset intensity. The determining unit is configured to determine the type of the filter screen according to the intensity of the reflected light; determine the algorithm and parameters corresponding to the type of the filter screen. The detecting unit is configured to detect the clogging condition of the filter screen by using the algorithm and parameters.

[0011] Combined with the second aspect, in a possible implementation manner, the determining unit is specifically configured to: search for at least one pre-stored light intensity range, determine the target light intensity range where the intensity of the reflected light is located; determine the type of the filter screen according to the target light intensity range.

[0012] Combined with the second aspect and the above possible implementation manners, in another possible implementation manner, the detection device for filter screen clogging further includes: a storage unit and an output unit. The storage unit is configured to record the number of failures if the intensity of the reflected light does not belong to any of at least one light intensity range; the determining unit is further configured to re-emit light with a preset intensity to determine the type of the filter screen. The output unit is configured to output an alarm message when the number of failures reaches a preset value, and the alarm message is used to prompt the user that the detection device for filter screen clogging has failed.

[0013] The specific implementation manner may refer to the behavior functions of the detection device for filter screen clogging in the filter screen clogging detection method provided in the first aspect or the possible implementation manners of the first aspect.

[0014] In a third aspect, a detection device for filter screen clogging is provided, and the detection device for filter screen clogging includes: at least one processor, a memory, a communication interface, and a communication bus. The processor is connected to the memory and the communication interface through the communication bus, and the memory is used to store computer execution instructions. When the detection device for filter screen clogging runs, the processor executes the computer execution instructions stored in the memory, so that the detection device for filter screen clogging executes the filter screen clogging detection method according to any one of the first aspect or the possible implementation manners of the first aspect.

[0015] In a fourth aspect, a computer storage medium is provided, on which computer-executable instructions are stored. When the computer-executable instructions run on a filter screen clogging detection device, the filter screen clogging detection device is caused to execute the filter screen clogging detection method according to any one of the first aspect or the possible implementation manners of the first aspect.

[0016] In the filter screen clogging detection method provided by the present invention, after a preset-intensity light is emitted by a clogging detection sensor, the reflected light of the filter screen is received. According to the intensity of the reflected light, the type of the filter screen is determined, the algorithm and parameters corresponding to the type of the filter screen are determined, and the algorithm and parameters are used to detect the clogging condition of the filter screen. In this way, when the distances between different types of filter screens and the clogging detection sensor are the same, and the intensity of the light emitted by the clogging detection sensor is constant, since the light reflection capabilities of different types of filter screens are different, the type of the filter screen is determined by the intensity of the reflected light of the filter screen, and then the corresponding algorithm and parameters are determined, realizing the standardization of the clogging detection sensor, that is, the same sensor can be used to detect the clogging conditions of different types of filter screens, reducing the cost and improving the detection efficiency. Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the composition of a filter screen clogging detection device provided by an embodiment of the present invention;

[0018] Figure 2 It is a schematic diagram of the composition of another filter screen clogging detection device provided by an embodiment of the present invention;

[0019] Figure 3 It is a flowchart of a filter screen clogging detection method provided by an embodiment of the present invention;

[0020] Figure 4 It is a schematic diagram of the composition of another filter screen clogging detection device provided by an embodiment of the present invention;

[0021] Figure 5 It is a schematic diagram of the composition of another filter screen clogging detection device provided by an embodiment of the present invention;

[0022] Figure 6 It is a schematic diagram of the composition of another filter screen clogging detection device provided by an embodiment of the present invention;

[0023] Figure 7 It is a schematic diagram of the composition of another filter screen clogging detection device provided by an embodiment of the present invention. Detailed Embodiments

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0025] In order to reduce costs and improve detection efficiency when detecting the dirt blockage of the filter screen, an embodiment of the present invention provides a method for detecting the dirt blockage of the filter screen, which is applied to a detection device for the dirt blockage of the filter screen. The detection device for the dirt blockage of the filter screen can be an indoor unit of an air conditioner, a fresh air machine, an air purifier, or other devices including an air filter screen.

[0026] In one possible implementation, as Figure 1 shown, the detection device for the dirt blockage of the filter screen may specifically include: a dirt blockage detection sensor 11, a filter screen 12, and an electronic control module 13. Among them, the dirt blockage detection sensor 11 may include a transmitting module, a receiving module, a first communication module, and a first processor. The electronic control module 13 may include a second communication module and a second processor.

[0027] Among them, both the transmitting module and the receiving module are connected to the first processor. The first processor controls the transmitting module to emit light of a preset intensity, and the light is reflected after encountering the filter screen 12. The receiving module receives the reflected light of the filter screen and sends the intensity of the reflected light to the first processor. The first processor searches for at least one pre-stored light intensity range according to the intensity of the reflected light, determines the target light intensity range in which the intensity of the reflected light is located, and determines the corresponding type of the filter screen, so as to detect the dirt blockage situation of the filter screen by using the corresponding algorithm and parameters. The first processor is connected to the second communication module via the first communication module, and is used to transmit the detection situation to the second processor via the first communication module and the second communication module.

[0028] In another possible implementation, as Figure 2 shown, the detection device for the dirt blockage of the filter screen may specifically include: a dirt blockage detection sensor 21, a filter screen 22, and an electronic control module 23. Among them, the dirt blockage detection sensor 21 may include a transmitting module and a receiving module. The electronic control module 23 may include a processor.

[0029] Among them, both the transmitting module and the receiving module are connected to the processor. The processor controls the transmitting module to emit light of a preset intensity, and the light is reflected after encountering the filter screen 22. The receiving module receives the reflected light of the filter screen and sends the intensity of the reflected light to the processor. The processor searches for at least one pre-stored light intensity range according to the intensity of the reflected light, determines the target light intensity range in which the intensity of the reflected light is located, and determines the corresponding type of the filter screen, so as to detect the dirt blockage situation of the filter screen.

[0030] It should be noted that Figure 1 and Figure 2 The processor in the filter may be a microprogrammed control unit (MCU). In addition, the light emitted by the filter blockage detection sensor may be any one of infrared light, laser light, and visible light. Of course, the emitted light may also be other light sources that can be reflected on the filter to determine the type of filter. Accordingly, when infrared light is used, the filter blockage detection sensor is an infrared filter blockage detection sensor; when laser light is used, the filter blockage detection sensor is a laser sensor; when visible light is used, the filter blockage detection sensor is a photosensitive sensor.

[0031] based on Figure 1 and Figure 2 , Figure 3 A filter blockage detection method provided by an embodiment of the present invention is applied to a scenario where the distances between different types of filters and a blockage detection sensor are the same and the light intensity emitted by the blockage detection sensor is constant. The method may include:

[0032] 301. After the dirt and blockage detection sensor emits light of a preset intensity, it receives reflected light from the filter.

[0033] Among them, after the dirty blockage detection sensor is activated, Figure 1 The first processor or Figure 2 The processor controls the transmitting module to emit light of a preset intensity, such as infrared light. The light is reflected by the filter, and the receiving module can receive the reflected light of the filter.

[0034] 302. Determine the type of filter based on the intensity of the reflected light.

[0035] After receiving the reflected light from the filter, the receiving module can Figure 1 The first processor in Figure 2 The processor in the Figure 1 Taking this as an example, since different types of filters have different abilities to reflect light, and the first processor pre-stores at least one light intensity range and a one-to-one corresponding filter type, the first processor can determine the target light intensity range within which the intensity of the reflected light lies, thereby determining the type of filter corresponding to the target light intensity range.

[0036] It should be noted that, in an embodiment of the present invention, experiments can be conducted in advance to obtain that the distances between different types of filters and the dirt and blockage detection sensor are all preset values ​​L, and when the light intensity emitted by the dirt and blockage detection sensor is constant, the intensity of the received reflected light is obtained, and the correspondence between the filter type and the light intensity range is pre-stored.

[0037] 303. Determine the algorithm and parameters corresponding to the type of filter screen.

[0038] Among them, since the materials and designs of different types of filter screens are different, different algorithms and parameters are required to detect the fouling conditions of different types of filter screens. Therefore, after determining the type of filter screen, the algorithm and parameters corresponding to the type of filter screen can be determined according to the pre-stored correspondence between the type and the algorithm and parameters.

[0039] 304. Use the algorithm and parameters to detect the fouling condition of the filter screen.

[0040] Furthermore, when initially determining the type of filter screen, it may occur that the intensity of the reflected light does not belong to any of at least one light intensity range. To ensure the accuracy of the detection, multiple detections can be performed. Specifically: a failure count can be set, and the initial value of this failure count is zero. Each time it is determined that the intensity of the reflected light does not belong to any of at least one light intensity range, the failure count is incremented by 1. When the failure count reaches the preset value, it is determined that the detection device for the filter screen fouling has failed, and an alarm message is output. This alarm message is used to prompt the user that the detection device for the filter screen fouling has failed, and the cause of the failure can be abnormal installation of the filter screen or the fouling detection sensor, failure of the fouling detection sensor, damage to the filter screen, etc.

[0041] For the method for detecting the fouling of the filter screen provided by the present invention, after the fouling detection sensor emits light of a preset intensity, the reflected light of the filter screen is received, the type of the filter screen is determined according to the intensity of the reflected light, the algorithm and parameters corresponding to the type of the filter screen are determined, and the algorithm and parameters are used to detect the fouling condition of the filter screen. In this way, when the distances between different types of filter screens and the fouling detection sensor are the same, and the intensity of the light emitted by the fouling detection sensor is constant, since the light reflection capabilities of different types of filter screens are different, the type of the filter screen is determined by the intensity of the reflected light of the filter screen, and then the corresponding algorithm and parameters are determined, realizing the standardization of the fouling detection sensor, that is, the same sensor can be used to detect the fouling conditions of different types of filter screens, reducing the cost and improving the detection efficiency.

[0042] The above mainly introduced the solution provided by the embodiments of the present invention from the perspective of the detection device for filter clogging. It can be understood that in order to implement the above functions, the detection device for filter clogging includes the corresponding hardware structures and / or software modules for performing each function. Those skilled in the art should easily realize that in combination with the algorithm steps of each example described in the embodiments disclosed herein, the present invention can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed in the way of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present invention.

[0043] The embodiments of the present invention can divide the function modules of the detection device for filter clogging according to the above method examples. For example, each function module can be divided corresponding to each function, or two or more functions can be integrated into one processing module. The above integrated module can be implemented in the form of hardware or in the form of a software function module. It should be noted that the division of modules in the embodiments of the present invention is illustrative, only a logical function division, and there can be other division methods in actual implementation.

[0044] In the case of dividing each function module corresponding to each function, Figure 4 Fig. shows another possible composition schematic diagram of the detection device for filter clogging involved in the above embodiments, as Figure 4 shown, the detection device for filter clogging may include: a receiving unit 41, a determining unit 42, and a detecting unit 43.

[0045] Among them, the receiving unit 41 is used to support the detection device for filter clogging to execute Figure 3 step 301 in the detection method for filter clogging shown in

[0046] The determining unit 42 is used to support the detection device for filter clogging to execute Figure 3 step 302 and step 303 in the detection method for filter clogging shown in

[0047] The detecting unit 43 is used to support the detection device for filter clogging to execute Figure 3 step 304 in the detection method for filter clogging shown in

[0048] Furthermore, in the embodiments of the present invention, as Figure 5 shown, the detection device for filter clogging may further include: a storage unit 44 and an output unit 45.

[0049] The storage unit 44 is used to support the detection device for filter clogging to execute Figure 3In the method for detecting clogging of the filter screen shown, when the intensity of the reflected light does not belong to any of at least one light intensity range, the number of faults is recorded.

[0050] An output unit 45, configured to support the filter screen clogging detection device to execute Figure 3 In the method for detecting clogging of the filter screen shown, when the number of faults reaches a preset value, an alarm message is output.

[0051] It should be noted that all relevant contents of each step involved in the above method embodiments can be cited in the function descriptions of the corresponding functional modules, and will not be elaborated here.

[0052] The filter screen clogging detection device provided by the embodiment of the present invention is used to execute the above method for detecting clogging of the filter screen, and thus can achieve the same effect as the above method for detecting clogging of the filter screen.

[0053] In the case of adopting an integrated unit, Figure 6 Another possible composition schematic diagram of the filter screen clogging detection device involved in the above embodiment is shown. As Figure 6 shown, the filter screen clogging detection device includes: a processing module 51, a communication module 52, and a storage module 53.

[0054] Among them, the processing module 51 is used to control and manage the actions of the filter screen clogging detection device. For example, the processing module 51 is used to support the filter screen clogging detection device to execute Figure 3 Steps 301, 302, 303, 304 in, and / or other processes of the technologies described herein. The communication module 52 is used to support the communication of the filter screen clogging detection device with other network entities. The storage module 53 is used to store the program code and data of the filter screen clogging detection device.

[0055] Among them, the processing module 51 may be a processor. It can implement or execute various exemplary logic blocks, modules, and circuits described in combination with the disclosure of the present invention. The communication module 52 may be a communication interface. The storage module 53 may be a memory.

[0056] When the processing module is a processor, the communication module is a communication interface, and the storage module is a memory, the filter screen clogging detection device may be Figure 7 the device shown.

[0057] Figure 7 A composition schematic diagram of a filter screen clogging detection device provided by an embodiment of the present invention is shown. As Figure 7 shown, the filter screen clogging detection device may include: at least one processor 61, a memory 62, a communication interface 63, and a communication bus 64.

[0058] Next, in combination withFigure 7 Specifically introduce each component of the detection device for filter clogging:

[0059] Among them, the processor 61 is the control center of the detection device for filter clogging, which can be a single processor or a collective term for multiple processing elements. For example, the processor 61 is a central processing unit (CPU), or it can be an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present invention, such as: one or more digital signal processors (DSP), or one or more field programmable gate arrays (FPGA).

[0060] In a specific implementation, as an embodiment, the processor 61 may include one or more CPUs, such as Figure 7 the CPU0 and CPU1 shown in. And, as an embodiment, the detection device for filter clogging may include multiple processors, such as Figure 7 the processor 61 and the processor 65 shown in. Each of these processors can be a single-core processor (Single-CPU) or a multi-core processor (Multi-CPU). Here, the processor may refer to one or more devices, circuits, and / or processing cores for processing data (such as computer program instructions).

[0061] The memory 62 can be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, or it can also be an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but not limited to this. The memory 62 can exist independently and be connected to the processor 61 through the communication bus 64. The memory 62 can also be integrated with the processor 61.

[0062] In a specific implementation, the memory 62 is used to store the data in the present invention and execute the software program of the present invention. The processor 61 can execute various functions of the detection device for filter clogging by running or executing the software program stored in the memory 62 and calling the data stored in the memory 62.

[0063] The communication interface 63 uses any device such as a transceiver to communicate with other devices or communication networks, such as a radio access network (RAN), a wireless local area network (WLAN), etc. The communication interface 63 can include a receiving unit to implement the receiving function and a transmitting unit to implement the transmitting function.

[0064] The communication bus 64 can be an industry standard architecture (ISA) bus, a peripheral component interconnect (PCI) bus, or an extended industry standard architecture (EISA) bus, etc. This bus can be divided into an address bus, a data bus, a control bus, etc. For the sake of representation, Figure 7 only a thick line is used to represent it in the figure, but it does not mean that there is only one bus or one type of bus.

[0065] Through the description of the above embodiments, those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above function modules is used as an example. In actual applications, the above functions can be allocated to different function modules as needed, that is, the internal structure of the device can be divided into different function modules to complete all or part of the functions described above.

[0066] In several embodiments provided by the present invention, it should be understood that the disclosed device and method can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the modules or units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections between each other can be through some interfaces. The indirect couplings or communication connections of the devices or units can be in electrical, mechanical or other forms.

[0067] The units described as separate components may or may not be physically separated. The components displayed as units can be one physical unit or multiple physical units, that is, they can be located in one place, or they can be distributed to multiple different places. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0068] In addition, each functional unit in various embodiments of the present invention can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above integrated units can be implemented in the form of hardware or in the form of software functional units.

[0069] If the above integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on such an understanding, the technical solution of the embodiments of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. The software product is stored in a storage medium and includes several instructions to enable a device (which can be a single-chip microcomputer, a chip, etc.) or a processor to execute all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: USB flash drives, mobile hard disks, ROM, RAM, magnetic disks or optical disks and other various media that can store program codes.

[0070] As described above, it is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the said claims.

Claims

1. A detection method for filter clogging, applied to a detection device for filter clogging, the detection device for filter clogging comprising a clogging detection sensor, characterized in that, The method includes: After the dirt blockage detection sensor emits light of a preset intensity, receiving the reflected light of the filter screen; Determining the type of the filter screen according to the intensity of the reflected light; Determining the algorithm and parameters corresponding to the type of the filter screen; Using the algorithm and the parameters to detect the dirt blockage condition of the filter screen.

2. The detection method for filter clogging according to claim 1, wherein The determining the type of the filter screen according to the intensity of the reflected light includes: Searching for at least one pre-stored light intensity range and determining the target light intensity range in which the intensity of the reflected light is located; Determining the type of the filter screen according to the target light intensity range.

3. The detection method for filter clogging according to claim 2, characterized in that, The method further includes: If the intensity of the reflected light does not belong to any of the at least one light intensity range, recording the number of failures, and re-emitting the light of the preset intensity to determine the type of the filter screen; When the number of failures reaches a preset value, outputting an alarm message, where the alarm message is used to prompt the user that the detection device for dirt blockage of the filter screen fails.

4. The detection method for clogging of the filter screen according to claim 1, wherein The light emitted by the dirt blockage detection sensor is any one of infrared light, laser light, and visible light.

5. A detection device for clogging of a filter screen, characterized in that, The detection device for dirt blockage of the filter screen includes a dirt blockage detection sensor, a receiving unit, a determining unit, and a detecting unit; The receiving unit is configured to receive the reflected light of the filter screen after the dirt blockage detection sensor emits light of a preset intensity; The determining unit is configured to determine the type of the filter screen according to the intensity of the reflected light; and determine the algorithm and parameters corresponding to the type of the filter screen; The detecting unit is configured to use the algorithm and the parameters to detect the dirt blockage condition of the filter screen.

6. The detection device for the dirty blockage of the filter screen according to claim 5, wherein, The determining unit is specifically configured to: Search for at least one pre-stored light intensity range and determine the target light intensity range in which the intensity of the reflected light is located; Determine the type of the filter screen according to the target light intensity range.

7. The detection device for the filter clogging according to claim 6, wherein, The detection device for dirt blockage of the filter screen further includes a storage unit and an output unit; The storage unit is configured to record the number of failures if the intensity of the reflected light does not belong to any of the at least one light intensity range; the determining unit is further configured to re-emit the light of the preset intensity to determine the type of the filter screen; The output unit is configured to output an alarm message when the number of failures reaches a preset value, where the alarm message is used to prompt the user that the detection device for dirt blockage of the filter screen fails.

8. A detection device for clogging of a filter screen, characterized in that, The detection device for dirt blockage of the filter screen includes a processor, a memory, a communication interface, and a communication bus; The processor is connected to the memory and the communication interface through the communication bus. The memory is used to store computer execution instructions. When the detection device for dirt blockage of the filter screen runs, the processor executes the computer execution instructions stored in the memory, so that the detection device for dirt blockage of the filter screen executes the method for detecting dirt blockage of the filter screen according to any one of claims 1-4.

9. A computer storage medium, characterized in that, The computer storage medium includes computer execution instructions. When the computer execution instructions run on the detection device for dirt blockage of the filter screen, the detection device for dirt blockage of the filter screen is enabled to execute the method for detecting dirt blockage of the filter screen according to any one of claims 1-4.

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