Fault reminding method and device of air filter, vehicle and storage medium

Abstract

The invention relates to the technical field of fuel cells, in particular to a fault reminding method and device for an air filter, a vehicle and a storage medium, and the method comprises the steps that the rear end dust value of the air filter, the current outlet pressure value of an air compressor, the current gas flow and the current rotating speed are obtained; the rear end pressure value of the air filter is calculated according to the current outlet pressure value, the current gas flow and the current rotating speed, and the current state of the air filter is determined according to the rear end dust value and the rear end pressure value; if the current state is the fault state, corresponding fault reminding information is generated based on the current state, and the current vehicle is controlled to conduct reminding based on the corresponding fault reminding information. Therefore, the problem that the state of the air filter cannot be detected in time in the prior art is solved, the health state of the air filter is monitored in real time by monitoring the dust value and the pressure value of the rear end of the air filter, and meanwhile the cost of the system is greatly reduced.

Description

Technical Field

[0001] The present application relates to the technical field of fuel cells, and particularly relates to a method and device for fault reminder of an air filter, a vehicle, and a storage medium. Background Art

[0002] In recent years, the global energy crisis and environmental pollution have been intensifying. In order to alleviate environmental pollution and reduce greenhouse gas emissions, hydrogen fuel cell technology provides a new technical route. Since the fuel cell system has high requirements for the cleanliness of air, an air filter is installed at the air inlet. The air filter can filter a large amount of dust and some harmful gases in the air. However, when the air filter is used for a long time or works in a harsh environment for a period of time, a large amount of substances such as dust and oil will accumulate inside the filter element, and even freeze at low temperatures. At this time, the resistance of the air passing through the filter element will increase greatly, resulting in the engine being unable to work properly. Therefore, it is necessary to replace the new filter element in time.

[0003] In the related art, to determine whether the air filter fails, the methods usually adopted are regular maintenance or opening the air filter housing for manual observation.

[0004] However, the above methods cannot detect the state of the air filter in time. When the environment is harsh, the air filter may fail quickly, resulting in an increase in engine failure rates such as compressor surge, and dust and toxic gases will reduce the durability of the fuel cell stack, which urgently needs to be improved. Summary of the Invention

[0005] The present application provides a method and device for fault reminder of an air filter, a vehicle, and a storage medium to solve the problem that the related art cannot detect the state of the air filter in time.

[0006] The first aspect embodiment of the present application provides a method for fault reminder of an air filter, including the following steps:

[0007] Obtain the dust value at the rear end of the air filter, the current outlet pressure value of the air compressor, the current gas flow rate, and the current rotational speed;

[0008] Calculate the pressure value at the rear end of the air filter according to the current outlet pressure value, the current gas flow rate, and the current rotational speed, and determine the current state of the air filter according to the dust value at the rear end and the pressure value at the rear end;

[0009] If the current state is a fault state, generate a corresponding fault reminder message based on the current state, and control the current vehicle to give a reminder based on the corresponding fault reminder message.

[0010] In combination with the first aspect, in some possible implementation manners, determining the current state of the air filter according to the backend dust value and the backend pressure value includes:

[0011] Determine whether the backend dust value is greater than or equal to a first preset threshold;

[0012] If the backend dust value is greater than or equal to the first preset threshold, then determine whether the backend pressure value is less than or equal to a second preset threshold;

[0013] If the backend pressure value is less than or equal to the second preset threshold, then determine that the current state of the air filter is the fault state, and the air filter has a fault of filter element blockage and breakage. Otherwise, determine that the current state of the air filter is the fault state, and the air filter has a fault of filter element breakage.

[0014] In combination with the first aspect and the above implementation manners, in some possible implementation manners, after determining whether the backend dust value is greater than or equal to the first preset threshold, it further includes:

[0015] If the backend dust value is less than the first preset threshold, then determine whether the backend pressure value is less than or equal to a third preset threshold;

[0016] If the backend pressure value is less than or equal to the third preset threshold, then obtain the current ambient temperature;

[0017] If the current ambient temperature is less than or equal to a preset temperature, then determine that the current state of the air filter is the fault state, and the air filter has a fault of filter element freezing. Otherwise, determine that the current state of the air filter is the fault state, and the air filter has a fault of filter element dust blockage.

[0018] In combination with the first aspect and the above implementation manners, in some possible implementation manners, after determining whether the backend pressure value is less than or equal to the third preset threshold, it further includes:

[0019] If the backend pressure value is greater than the third preset threshold, then determine that the current state of the air filter is a fault-free state.

[0020] In combination with the first aspect and the above implementation manners, in some possible implementation manners, calculating the backend pressure value of the air filter according to the current outlet pressure value, the current gas flow rate, and the current rotation speed includes:

[0021] P in = P out / F(f,r)

[0022] Wherein, P inis the back-end pressure value of the air filter, P out is the current outlet pressure value of the air compressor, F(f, r) is the look-up table function of the air compressor MAP (Manifold Absolute Pressure), f is the current gas flow rate of the air compressor, and r is the current rotational speed of the air compressor.

[0023] According to the air filter fault reminder method provided by the embodiments of the present application, the back-end pressure value of the air filter is calculated based on the current outlet pressure value, the current gas flow rate, and the current rotational speed, and if the air filter is in a fault state according to the back-end dust value and the back-end pressure value, a corresponding fault reminder message is generated and a reminder is given. Thus, the problem that the state of the air filter cannot be detected in time in the related art is solved. By monitoring the back-end dust value and the pressure value of the air filter, the health state of the air filter is monitored in real time with low cost, and at the same time, the cost of the system is greatly reduced.

[0024] The second aspect of the embodiments of the present application provides a fault reminder device for an air filter, including:

[0025] An acquisition module, configured to acquire the back-end dust value of the air filter, the current outlet pressure value of the air compressor, the current gas flow rate, and the current rotational speed;

[0026] A state determination module, configured to calculate the back-end pressure value of the air filter according to the current outlet pressure value, the current gas flow rate, and the current rotational speed, and determine the current state of the air filter according to the back-end dust value and the back-end pressure value;

[0027] A reminder module, configured to, if the current state is a fault state, generate a corresponding fault reminder message based on the current state, and control the current vehicle to give a reminder based on the corresponding fault reminder message.

[0028] In combination with the second aspect, in some possible implementation manners, the state determination module is configured to:

[0029] Judge whether the back-end dust value is greater than or equal to a first preset threshold;

[0030] If the back-end dust value is greater than or equal to the first preset threshold, judge whether the back-end pressure value is less than or equal to a second preset threshold;

[0031] If the back-end pressure value is less than or equal to the second preset threshold, determine that the current state of the air filter is the fault state, and the air filter is a filter element blockage and damage fault, otherwise, determine that the current state of the air filter is the fault state, and the air filter is a filter element damage fault.

[0032] Combined with the second aspect and the above implementation manners, in some possible implementation manners, after determining whether the backend dust value is greater than or equal to the first preset threshold, the status determination module is further configured to:

[0033] If the backend dust value is less than the first preset threshold, determine whether the backend pressure value is less than or equal to a third preset threshold;

[0034] If the backend pressure value is less than or equal to the third preset threshold, obtain the current ambient temperature;

[0035] If the current ambient temperature is less than or equal to a preset temperature, determine that the current state of the air filter is the fault state, and the air filter has a frozen filter element fault; otherwise, determine that the current state of the air filter is the fault state, and the air filter has a filter element dust blockage fault.

[0036] Combined with the second aspect and the above implementation manners, in some possible implementation manners, after determining whether the backend pressure value is less than or equal to the third preset threshold, the status determination module is further configured to:

[0037] If the backend pressure value is greater than the third preset threshold, determine that the current state of the air filter is a fault-free state.

[0038] Combined with the second aspect and the above implementation manners, in some possible implementation manners, the obtaining module 100 includes:

[0039] P in = P out / F(f, r)

[0040] where P in is the backend pressure value of the air filter, P out is the current outlet pressure value of the air compressor, F(f, r) is the look-up table function of the air compressor MAP, f is the current gas flow rate of the air compressor, and r is the current rotation speed of the air compressor.

[0041] According to the air filter fault reminder device of the embodiment of the present application, by calculating the backend pressure value of the air filter based on the current outlet pressure value, the current gas flow rate, and the current rotation speed, and judging whether the air filter is in a fault state according to the backend dust value and the backend pressure value, a corresponding fault reminder message is generated and reminded. Thereby, the problem that the related art cannot detect the state of the air filter in time is solved. By monitoring the backend dust value and the pressure value of the air filter, the health state of the air filter is monitored in real time with low cost, and at the same time, the cost of the system is greatly reduced.

[0042] A third aspect embodiment of the present application provides a vehicle, including: a memory, a processor, and a computer program stored on the memory and executable on the processor, where the processor executes the program to implement the fault reminder method of the air filter as described in the above embodiments.

[0043] A fourth aspect embodiment of the present application provides a computer-readable storage medium storing computer instructions for causing the computer to execute the fault reminder method of the air filter as described in the above embodiments.

[0044] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. Description of the Drawings

[0045] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description of the embodiments in conjunction with the drawings, where:

[0046] Figure 1 is a flowchart of a fault reminder method for an air filter according to an embodiment of the present application;

[0047] Figure 2 is a schematic diagram of the installation position of a dust sensor according to an embodiment of the present application;

[0048] Figure 3 is a flowchart of the state judgment of an air filter according to an embodiment of the present application;

[0049] Figure 4 is a block diagram of a fault reminder device for an air filter according to an embodiment of the present application;

[0050] Figure 5 is a schematic diagram of the structure of a vehicle provided by an embodiment of the present application. Detailed Embodiments

[0051] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present application and should not be construed as limiting the present application.

[0052] The following describes a method, device, vehicle, and storage medium for fault reminder of an air filter according to an embodiment of the present application. In view of the problem that the related art in the above-mentioned background art cannot detect the state of the air filter in time, the present application provides a method for fault reminder of an air filter, which solves the problem that the related art cannot detect the state of the air filter in time. By monitoring the dust value and pressure value at the rear end of the air filter, the health state of the air filter can be monitored in real time with low cost, and at the same time, the cost of the system is greatly reduced.

[0053] Specifically, Figure 1 FIG. is a schematic flow chart of a method for fault reminder of an air filter provided by an embodiment of the present application.

[0054] As Figure 1 shown, the method for fault reminder of the air filter includes the following steps:

[0055] In step S101, obtain the dust value at the rear end of the air filter, the current outlet pressure value of the air compressor, the current gas flow rate, and the current rotational speed.

[0056] Optionally, the dust value at the rear end of the air filter may be the value of PM2.5 (Particulate Matter 2.5, particulate matter with a diameter less than or equal to 2.5 μm), and no specific limitation is made here.

[0057] Specifically, as Figure 2 shown, in an embodiment of the present application, the dust value at the rear end of the air filter can be obtained by installing a dust sensor at the rear end of the air filter to monitor the dust filtration effect of the air filter. It should be noted that the above method of obtaining the dust value at the rear end of the air filter through the dust sensor is only exemplary and does not limit the present application. Those skilled in the art can obtain the dust value at the rear end of the air filter by other means according to the actual situation. To avoid redundancy, no detailed description is given here.

[0058] Preferably, in an embodiment of the present application, the current outlet pressure value of the air compressor can be obtained by a pressure sensor installed at the outlet of the air compressor. The current gas flow rate of the air compressor can be obtained by an air flow sensor. The current rotational speed of the air compressor can also be obtained according to the specifications of the air compressor, and no specific limitation is made here.

[0059] It can be understood that when the air filter is blocked, the pressure value at the rear end of the air filter will decrease. However, if a pressure sensor is added at the rear end of the air filter to obtain the pressure value at the rear end of the air filter, it will increase the system development cost. Therefore, the embodiment of the present application can estimate the pressure value at the rear end of the air filter through an algorithm only by using a dust sensor without adding a sensor at the rear end of the air compressor, thereby simplifying the structure of the system and saving the actual application cost of the system.

[0060] In step S102, the pressure value at the rear end of the air filter is calculated according to the current outlet pressure value, the current gas flow rate, and the current rotational speed, and the current state of the air filter is determined according to the dust value at the rear end and the pressure value at the rear end.

[0061] Specifically, when the air filter is blocked, the pressure value at the rear end of the air filter will decrease. Without changing the discharge pressure of the system, the air compressor will surge. Therefore, the embodiment of the present application can determine whether there is a fault in the current state of the air filter through logical judgment based on the obtained dust value at the rear end and the pressure value at the rear end of the air filter, which is convenient for subsequently reminding the user to repair the air filter or replace the filter element in time.

[0062] Further, in some embodiments, calculating the pressure value at the rear end of the air filter according to the current outlet pressure value, the current gas flow rate, and the current rotational speed includes:

[0063] P in =P out / F(f,r)

[0064] Wherein, P in is the pressure value at the rear end of the air filter, P out is the current outlet pressure value of the air compressor, F(f,r) is the look-up table function of the air compressor MAP, f is the current gas flow rate of the air compressor, and r is the current rotational speed of the air compressor.

[0065] Specifically, the embodiment of the present application can obtain the look-up table function of the air compressor MAP through the current gas flow rate and the current rotational speed of the air compressor, and then calculate the pressure value at the rear end of the air filter according to the current outlet pressure value of the air compressor and the look-up table function of the air compressor MAP.

[0066] Thus, by using the existing sensors of the air compressor to obtain the current outlet pressure value and the current gas flow rate of the air compressor and combining with the current rotational speed to calculate the pressure value at the rear end of the air filter, the algorithm design is simple and effective, and the cost of the system is reduced.

[0067] Further, in some embodiments, determining the current state of the air filter according to the backend dust value and the backend pressure value includes: judging whether the backend dust value is greater than or equal to a first preset threshold; if the backend dust value is greater than or equal to the first preset threshold, then judging whether the backend pressure value is less than or equal to a second preset threshold; if the backend pressure value is less than or equal to the second preset threshold, then determining that the current state of the air filter is a fault state, and the air filter has a fault of blocked and damaged filter element, otherwise, determining that the current state of the air filter is a fault state, and the air filter has a fault of damaged filter element.

[0068] Wherein, the first preset threshold and the second preset threshold can be thresholds preset by those skilled in the art, can be thresholds obtained through a limited number of experiments, or can be thresholds obtained through a limited number of computer simulations, and are not specifically limited herein.

[0069] Specifically, when the backend dust value is greater than or equal to the first preset threshold and the backend pressure value is less than or equal to the second preset threshold, the air filter has a fault of blocked and damaged filter element, and when the backend dust value is greater than or equal to the first preset threshold and the backend pressure value is greater than the second preset threshold, the air filter has a fault of damaged filter element.

[0070] Thus, by real-time monitoring of the backend dust value, it can be accurately judged whether the backend dust value exceeds the preset threshold, and the monitoring result of the backend pressure value can intuitively reflect the operating state of the device, timely understand the situation of filter element blockage, and according to the backend dust value and the backend pressure value, the current state of the air filter can be accurately judged, which is convenient for timely discovering faults and taking corresponding maintenance measures to avoid the decline of device performance caused by poor air circulation.

[0071] Further, in some embodiments, after judging whether the backend dust value is greater than or equal to the first preset threshold, it further includes: if the backend dust value is less than the first preset threshold, then judging whether the backend pressure value is less than or equal to a third preset threshold; if the backend pressure value is less than or equal to the third preset threshold, then obtaining the current ambient temperature; if the current ambient temperature is less than or equal to the preset temperature, then determining that the current state of the air filter is a fault state, and the air filter has a fault of frozen filter element, otherwise, determining that the current state of the air filter is a fault state, and the air filter has a fault of dust-blocked filter element.

[0072] Wherein, the third preset threshold can be a threshold preset by those skilled in the art, can be a threshold obtained through a limited number of experiments, or can be a threshold obtained through a limited number of computer simulations, and is not specifically limited herein. The preset temperature can be a temperature preset by those skilled in the art, can be a temperature obtained through a limited number of experiments, or can be a temperature obtained through a limited number of computer simulations, and is not specifically limited herein. Preferably, the preset temperature can be 0°C.

[0073] It is understandable that when the environment is harsh, the air filter may quickly fail, resulting in an increase in engine failure rates such as compressor surges, and dust and toxic gases will reduce the durability of the fuel cell stack. Therefore, the embodiments of the present application consider the situation where the air filter fails due to the influence of environmental temperature factors.

[0074] Specifically, when the dust value at the rear end is less than the first preset threshold, if the pressure value at the rear end is less than or equal to the third preset threshold and the current environmental temperature is less than or equal to the preset temperature, it is determined that the air filter has a frozen filter element failure. If the pressure value at the rear end is less than or equal to the third preset threshold and the current environmental temperature is greater than the preset temperature, it is determined that the air filter has a dust-blocked filter element failure.

[0075] Thus, by monitoring the dust value at the rear end, the pressure value at the rear end, and the current environmental temperature, it is possible to more accurately determine the failure state of the air filter according to different conditions and situations under different environmental conditions, and then determine whether the failure type is a frozen filter element failure or a dust-blocked filter element failure, so as to more precisely locate the failure problem and improve the efficiency and accuracy of maintenance.

[0076] In step S103, if the current state is a failure state, a corresponding failure reminder message is generated based on the current state, and the current vehicle is controlled to give a reminder based on the corresponding failure reminder message.

[0077] It is understandable that when the current state of the air filter is a failure state, it means that the air filter needs to be inspected, repaired, or the filter element needs to be replaced to prevent damage to other equipment. Therefore, the embodiments of the present application can generate corresponding failure reminder messages according to different failure types to remind the user.

[0078] For example, when it is determined that the current state of the air filter is a failure state, the vehicle's voice horn or in-vehicle speaker can be controlled to issue an acoustic alarm reminder of "The current air filter has a XXX failure, please check it in time!", and the vehicle instrument can be controlled to flash an optical text reminder of "The current air filter has a XXX failure, please check it in time!". At the same time, the failure reminder message can also be sent to the user's mobile terminal to remind the user to check the air filter in time.

[0079] Thus, the user can accurately understand the failure situation of the vehicle's air filter, and then make corresponding decisions according to the actual situation, such as: repairing the air filter, replacing the filter element, or other related requirements, saving the user's time and energy, and enhancing the user's experience.

[0080] Further, in some embodiments, after determining whether the backend pressure value is less than or equal to the third preset threshold, it further includes: if the backend pressure value is greater than the third preset threshold, it is determined that the current state of the air filter is a fault-free state.

[0081] Specifically, when the backend dust value of the air filter is less than the first preset threshold and the backend pressure value of the air filter is greater than the third preset threshold, it indicates that the filter element of the air filter has not been damaged or blocked, and it is determined that the current state of the air filter is a fault-free state, that is, the air filter is in a healthy state.

[0082] To enable those skilled in the art to further understand the method for judging the state of the air filter in the embodiments of the present application, the following will be elaborated in detail with specific embodiments.

[0083] As Figure 3 shown, when the first preset threshold is A, the second preset threshold is B, the third preset threshold is C, and the preset temperature is 0°C, the method for judging the state of the air filter includes the following steps:

[0084] S301, the system powers on at low voltage, and the controller starts to work.

[0085] S302, determine whether the backend dust value of the air filter is greater than or equal to A. If so, execute S303; otherwise, execute S306.

[0086] S303, determine whether the backend pressure value of the air filter is less than or equal to B. If so, execute S304; otherwise, execute S305.

[0087] S304, determine that the air filter has a filter element blockage and breakage fault.

[0088] S305, determine that the air filter has a filter element breakage fault.

[0089] S306, determine whether the backend pressure value of the air filter is less than or equal to C. If so, execute S307; otherwise, execute S310.

[0090] S307, determine whether the ambient temperature is less than or equal to 0°C. If so, execute S308; otherwise, execute S309.

[0091] S308, determine that the air filter has a filter element freezing fault.

[0092] S309, determine that the air filter has a filter element dust blockage fault.

[0093] S310, determine that the air filter has no filter element fault.

[0094] Thus, by making a detailed judgment on the fault type of the air filter according to the dust value at the rear end, the pressure value at the rear end, and the ambient temperature of the air filter, the specific fault types of the air filter are refined, so that it is convenient for users to take corresponding maintenance measures according to the specific fault types of the air filter, improving the user experience.

[0095] According to the fault reminder method of the air filter proposed in the embodiment of the present application, the rear-end pressure value of the air filter is calculated based on the current outlet pressure value, the current gas flow rate, and the current rotational speed, and if it is determined that the air filter is in a fault state according to the dust value at the rear end and the rear-end pressure value, a corresponding fault reminder message is generated and a reminder is given. Thus, the problem that the state of the air filter cannot be detected in time in the related art is solved. By monitoring the dust value and pressure value at the rear end of the air filter, the health state of the air filter is monitored in real time at low cost, and at the same time, the cost of the system is greatly reduced.

[0096] Next, a fault reminder device for an air filter proposed in the embodiment of the present application will be described with reference to the accompanying drawings.

[0097] Figure 4 It is a block diagram of a fault reminder device 10 for an air filter according to an embodiment of the present application.

[0098] As Figure 4 shown, the fault reminder device 10 for the air filter includes: an acquisition module 100, a state determination module 200, and a reminder module 300.

[0099] Among them, the acquisition module 100 is used to acquire the dust value at the rear end of the air filter, the current outlet pressure value of the air compressor, the current gas flow rate, and the current rotational speed; the state determination module 200 is used to calculate the rear-end pressure value of the air filter based on the current outlet pressure value, the current gas flow rate, and the current rotational speed, and determine the current state of the air filter according to the dust value at the rear end and the rear-end pressure value; the reminder module 300 is used to, if the current state is a fault state, generate a corresponding fault reminder message based on the current state, and control the current vehicle to give a reminder based on the corresponding fault reminder message.

[0100] Further, in some embodiments, the state determination module 200 is configured to: determine whether the dust value at the rear end is greater than or equal to a first preset threshold; if the dust value at the rear end is greater than or equal to the first preset threshold, determine whether the rear-end pressure value is less than or equal to a second preset threshold; if the rear-end pressure value is less than or equal to the second preset threshold, determine that the current state of the air filter is a fault state, and the air filter has a fault of a clogged and damaged filter element, otherwise, determine that the current state of the air filter is a fault state, and the air filter has a fault of a damaged filter element.

[0101] Further, in some embodiments, after determining whether the backend dust value is greater than or equal to the first preset threshold, the status determination module 200 is further configured to: if the backend dust value is less than the first preset threshold, determine whether the backend pressure value is less than or equal to the third preset threshold; if the backend pressure value is less than or equal to the third preset threshold, obtain the current ambient temperature; if the current ambient temperature is less than or equal to the preset temperature, determine that the current state of the air filter is a fault state, and the air filter has a frozen filter element fault, otherwise, determine that the current state of the air filter is a fault state, and the air filter has a filter element dust blockage fault.

[0102] Further, in some embodiments, after determining whether the backend pressure value is less than or equal to the third preset threshold, the status determination module 200 is further configured to: if the backend pressure value is greater than the third preset threshold, determine that the current state of the air filter is a fault-free state.

[0103] Further, in some embodiments, the acquisition module 100 includes:

[0104] P in = P out / F(f, r)

[0105] Wherein, P in is the backend pressure value of the air filter, P out is the current outlet pressure value of the air compressor, F(f, r) is the look-up table function of the air compressor MAP, f is the current gas flow rate of the air compressor, and r is the current rotational speed of the air compressor.

[0106] It should be noted that the foregoing explanation of the embodiments of the fault reminder method for the air filter also applies to the fault reminder device for the air filter in this embodiment, and will not be elaborated here.

[0107] According to the fault reminder device for the air filter provided by the embodiments of the present application, the backend pressure value of the air filter is calculated based on the current outlet pressure value, the current gas flow rate, and the current rotational speed, and according to the backend dust value and the backend pressure value, if the air filter is in a fault state, a corresponding fault reminder message is generated and reminded. Thus, the problem that the related art cannot detect the state of the air filter in time is solved. By monitoring the backend dust value and the pressure value of the air filter, the health state of the air filter is monitored in real time with low cost, and at the same time, the cost of the system is greatly reduced.

[0108] Figure 5 The structural schematic diagram of the vehicle provided by the embodiments of the present application. The vehicle may include:

[0109] A memory 501, a processor 502, and a computer program stored on the memory 501 and executable on the processor 502.

[0110] When the processor 502 executes the program, it implements the fault reminder method of the air filter provided in the above embodiments.

[0111] Furthermore, the vehicle further includes:

[0112] A communication interface 503, which is used for communication between the memory 501 and the processor 502.

[0113] A memory 501, which is used to store computer programs that can run on the processor 502.

[0114] The memory 501 may include a high-speed RAM memory, and may also include non-volatile memory, such as at least one disk memory.

[0115] If the memory 501, the processor 502, and the communication interface 503 are implemented independently, the communication interface 503, the memory 501, and the processor 502 can be interconnected through a bus and complete communication with each other. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For the sake of simplicity of representation, Figure 5 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.

[0116] Optionally, in a specific implementation, if the memory 501, the processor 502, and the communication interface 503 are integrated on a chip, the memory 501, the processor 502, and the communication interface 503 can complete communication with each other through an internal interface.

[0117] The processor 502 may be a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application.

[0118] This embodiment also provides a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, it implements the above-mentioned fault reminder method of the air filter.

[0119] In the description of this specification, the descriptions with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or N embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0120] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of this application, the meaning of "N" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0121] Any process or method description shown in the flowchart or described in other ways herein can be understood as representing a module, segment, or portion of code including one or more N executable instructions for implementing a customized logic function or process, and the scope of the preferred embodiments of this application includes additional implementations, where the functions can be executed in a substantially simultaneous manner or in the reverse order according to the involved functions, rather than in the order shown or discussed, which should be understood by those skilled in the art to which the embodiments of this application pertain.

[0122] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a definable sequence list of executable instructions for implementing logical functions, which can be specifically implemented in any computer-readable medium for use by an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processor, or other systems that can fetch and execute instructions from the instruction execution system, apparatus, or device), or used in conjunction with these instruction execution systems, apparatuses, or devices. For the purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by or in conjunction with an instruction execution system, apparatus, or device. More specific examples (non-exhaustive list) of computer-readable media include the following: an electrical connection part (electronic device) having one or N wirings, a portable computer disk cartridge (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium can even be paper or other suitable media on which the program can be printed, because the program can be obtained electronically, for example, by optically scanning the paper or other media, followed by editing, interpretation, or other suitable processing as necessary, and then stored in a computer memory.

[0123] It should be understood that various parts of the present application can be implemented using hardware, software, firmware, or combinations thereof. In the above-described embodiments, the N steps or methods can be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented using hardware, as in another embodiment, any one or a combination of the following techniques well known in the art can be used: discrete logic circuits having logic gate circuits for implementing logical functions on data signals, application-specific integrated circuits having suitable combinational logic gate circuits, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0124] Those of ordinary skill in the art of this technology can understand that all or part of the steps carried by the methods of the above embodiments can be completed by a program instructing relevant hardware, and the program can be stored in a computer-readable storage medium. When the program is executed, it includes one or a combination of the steps of the method embodiments.

[0125] In addition, each functional unit in various embodiments of the present application may be integrated into one processing module, or each unit may exist physically alone, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. When the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0126] The above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disc, etc. Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present application.

Claims

1. A method for reminding an air filter of a fault, characterized in that: The following steps are involved: Obtain the rear dust value of the air filter, the current outlet pressure value of the air compressor, the current gas flow rate and the current speed; Calculating a rear end pressure value of the air filter according to the current outlet pressure value, the current gas flow rate and the current speed, and determining a current state of the air filter according to the rear end dust value and the rear end pressure value; If the current state is a fault state, corresponding fault reminder information is generated based on the current state, and the current vehicle is controlled to give a reminder based on the corresponding fault reminder information.

2. The method according to claim 1, characterized in that: The determining the current state of the air filter according to the rear end dust value and the rear end pressure value comprises: Determining whether the rear dust value is greater than or equal to a first preset threshold; If the rear dust value is greater than or equal to the first preset threshold, determining whether the rear pressure value is less than or equal to a second preset threshold; If the rear end pressure value is less than or equal to the second preset threshold value, it is determined that the current state of the air filter is the fault state, and the air filter has a filter element clogged and damaged fault; otherwise, it is determined that the current state of the air filter is the fault state, and the air filter has a filter element damaged fault.

3. The method according to claim 2, characterized in that After determining whether the rear end dust value is greater than or equal to the first preset threshold, the method further includes: If the rear dust value is less than the first preset threshold, determining whether the rear pressure value is less than or equal to a third preset threshold; If the rear end pressure value is less than or equal to the third preset threshold, obtaining the current ambient temperature; If the current ambient temperature is less than or equal to the preset temperature, the current state of the air filter is determined to be the fault state, and the air filter has a filter element freezing fault; otherwise, the current state of the air filter is determined to be the fault state, and the air filter has a filter element dust clogging fault.

4. The method according to claim 3, characterized in that After determining whether the rear end pressure value is less than or equal to the third preset threshold, the method further includes: If the rear end pressure value is greater than the third preset threshold, it is determined that the current state of the air filter is a non-fault state.

5. The method according to claim 1, characterized in that The calculating the rear end pressure value of the air filter according to the current outlet pressure value, the current gas flow rate and the current speed includes: Among them, P in is the rear end pressure value of the air filter, P out is the current outlet pressure value of the air compressor, F(f,r) is the table lookup function of the air compressor MAP, f is the current gas flow rate of the air compressor, and r is the current speed of the air compressor.

6. A fault reminder device for an air filter, characterized in that: include: The acquisition module is used to obtain the rear dust value of the air filter, the current outlet pressure value of the air compressor, the current gas flow rate and the current speed; a state determination module, configured to calculate a rear pressure value of the air filter according to the current outlet pressure value, the current gas flow rate and the current rotation speed, and determine a current state of the air filter according to the rear dust value and the rear pressure value; The reminder module is used to generate corresponding fault reminder information based on the current state if the current state is a fault state, and control the current vehicle to remind based on the corresponding fault reminder information.

7. The device according to claim 6, characterized in that The state determination module is used to: Determining whether the rear dust value is greater than or equal to a first preset threshold; If the rear dust value is greater than or equal to the first preset threshold, determining whether the rear pressure value is less than or equal to a second preset threshold; If the rear end pressure value is less than or equal to the second preset threshold value, it is determined that the current state of the air filter is the fault state, and the air filter has a filter element clogged and damaged fault; otherwise, it is determined that the current state of the air filter is the fault state, and the air filter has a filter element damaged fault.

8. The device according to claim 7, characterized in that After determining whether the rear dust value is greater than or equal to the first preset threshold, the state determination module is further used to: If the rear dust value is less than the first preset threshold, determining whether the rear pressure value is less than or equal to a third preset threshold; If the rear end pressure value is less than or equal to the third preset threshold, obtaining the current ambient temperature; If the current ambient temperature is less than or equal to the preset temperature, the current state of the air filter is determined to be the fault state, and the air filter has a filter element freezing fault; otherwise, the current state of the air filter is determined to be the fault state, and the air filter has a filter element dust clogging fault.

9. A vehicle, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the air filter fault reminder method according to any one of claims 1 to 5.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: The program is executed by a processor to implement a fault reminder method for an air filter as claimed in any one of claims 1 to 5.

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