Traffic fault diagnosis method, device and equipment and storage medium

Abstract

The application discloses a flow fault diagnosis method, device, equipment and storage medium, and belongs to the technical field of vehicle control. The method comprises the following steps: obtaining the valve opening state of an exhaust gas recirculation system (EGR) based on the fact that an engine meets a detection condition; obtaining the first intake pressure of the EGR based on the fact that the valve opening state of the EGR is closed; controlling the valve of the EGR to open; obtaining the second intake pressure of the EGR according to a reference frequency; obtaining a second detection result for indicating whether the second intake pressure is stable; calculating the difference between the second intake pressure and the first intake pressure based on the fact that the second detection result indicates that the second intake pressure is stable; and determining that the EGR has a flow fault based on the fact that the difference is less than a first threshold. Whether the EGR has a flow fault is reflected by the difference between the first intake pressure and the second intake pressure, the EGR flow fault is diagnosed, and the monitoring of the normal use of the EGR function is ensured.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of vehicle control, and in particular, relate to a flow fault diagnosis method, device, equipment and storage medium. BACKGROUND

[0002] With the increasing importance of environmental protection, how to reduce the emission of harmful gases from the engine is valued. The EGR (Exhaust Gas Recirculation) can reduce the amount of harmful gases generated by the engine. When the amount of gas in the EGR is lower than the expected value, i.e. the EGR flow fault occurs, it will cause abnormal function of the EGR. Therefore, diagnosing the EGR flow fault can ensure the normal use of the EGR function by timely maintaining the EGR. SUMMARY

[0003] Embodiments of the present application provide a flow fault diagnosis method, device, equipment and storage medium, which can be used to diagnose the flow fault of the EGR. The technical solution is as follows:

[0004] In one aspect, the present application provides a flow fault diagnosis method, which comprises:

[0005] obtaining a first detection result for indicating whether the engine meets a detection condition;

[0006] based on the first detection result indicating that the engine meets the detection condition, obtaining an opening state of a valve of an exhaust gas recirculation system (EGR);

[0007] based on the opening state of the valve of the EGR being closed, obtaining a first intake pressure of the EGR;

[0008] controlling the valve of the EGR to open;

[0009] obtaining a second intake pressure of the EGR according to a reference frequency;

[0010] obtaining a second detection result for indicating whether the second intake pressure is stable;

[0011] based on the second detection result indicating that the second intake pressure is stable, calculating a difference between the second intake pressure and the first intake pressure;

[0012] based on the difference being less than a first threshold value, determining that the EGR has the flow fault.

[0013] In another aspect, a flow fault diagnosis device is provided, which comprises:

[0014] The first obtaining module is configured to obtain a first detection result indicating whether the engine meets a detection condition;

[0015] The second obtaining module is configured to obtain a valve opening state of an exhaust gas recirculation (EGR) system based on the first detection result indicating that the engine meets the detection condition.

[0016] The third obtaining module is configured to obtain a first intake pressure of the EGR based on the valve opening state of the EGR being closed.

[0017] The control module is configured to control the valve of the EGR to open.

[0018] The fourth obtaining module is configured to obtain a second intake pressure of the EGR at a reference frequency.

[0019] The fifth obtaining module is configured to obtain a second detection result indicating whether the second intake pressure is stable.

[0020] The calculation module is configured to calculate a difference between the second intake pressure and the first intake pressure based on the second detection result indicating that the second intake pressure is stable.

[0021] The determination module is configured to determine that the EGR has the flow fault based on the difference being less than the first threshold.

[0022] In another aspect, a computer device is provided, which includes a processor and a memory. The memory stores at least one computer program. The at least one computer program is loaded and executed by the processor, so that the computer device implements the flow fault diagnosis method described above.

[0023] In another aspect, a computer readable storage medium is also provided, which stores at least one computer program. The at least one computer program is loaded and executed by a processor, so that the computer implements the flow fault diagnosis method described above.

[0024] In another aspect, a computer program product or computer program is also provided, which includes computer instructions stored in a computer readable storage medium. A processor of a computer device reads the computer instructions from the computer readable storage medium. The processor executes the computer instructions, so that the computer device executes the flow fault diagnosis method described above.

[0025] The technical scheme provided by the embodiments of the present application at least brings the following beneficial effects:

[0026] The application obtains the first intake pressure before the valve opening of the EGR and the second intake pressure after the valve opening of the EGR in the case that the engine meets the detection condition. The difference between the second intake pressure and the first intake pressure is calculated, and the difference is compared with the first threshold value. Whether the EGR has a flow fault is reflected by the difference between the first intake pressure and the second intake pressure, so that the EGR flow fault is diagnosed to ensure the monitoring of the normal use of the EGR function. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0028] Figure 1 is a schematic diagram of an implementation environment provided by an embodiment of the application;

[0029] Figure 2 is a flowchart of a flow fault diagnosis method provided by an embodiment of the application;

[0030] Figure 3 is a diagnostic principle diagram of a flow fault provided by an embodiment of the application;

[0031] Figure 4 is a structural schematic diagram of a flow fault diagnosis device provided by an embodiment of the application;

[0032] Figure 5 is a structural schematic diagram of a server provided by an embodiment of the application;

[0033] Figure 6 is a structural schematic diagram of a flow fault diagnosis device provided by an embodiment of the application. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the application more clear, the embodiments of the application will be further described in detail below with reference to the drawings.

[0035] An embodiment of the application provides a flow fault diagnosis method, please refer to Figure 1 which shows a schematic diagram of a method implementation environment provided by an embodiment of the application. The implementation environment can include a vehicle 11 and a vehicle control system 12.

[0036] Optionally, the vehicle control system 12 obtains a first detection result indicating whether the engine of the vehicle 11 meets a detection condition; based on the first detection result indicating that the engine of the vehicle 11 meets the detection condition, the vehicle control system 12 obtains a valve opening state of the EGR; based on the valve opening state of the EGR being closed, the vehicle control system 12 obtains a first intake pressure of the EGR; the vehicle control system 12 controls the valve of the EGR to open; the vehicle control system 12 obtains a second intake pressure of the EGR at a reference frequency; the vehicle control system 12 obtains a second detection result indicating whether the second intake pressure is stable; based on the second detection result indicating that the second intake pressure is stable, the vehicle control system 12 calculates a difference between the second intake pressure and the first intake pressure; based on the difference being less than a first threshold, the vehicle control system 12 determines that the EGR has a flow fault.

[0037] In the above embodiment, the vehicle control system 12 can store the first intake pressure and the second intake pressure, for diagnosing whether the EGR of the vehicle 11 has a flow fault.

[0038] Optionally, the vehicle 11 and the vehicle control system 12 are communicatively connected through a wired or wireless network.

[0039] Those skilled in the art should understand that the vehicle 11 and the vehicle control system 12 described above are only examples, and other existing or future vehicles 11 or vehicle control systems 12 can also be applicable to the present application and should be included in the protection scope of the present application.

[0040] Based on the above Figure 1 embodiments provide a flow fault diagnosis method as shown in Figure 2 The method is applied to the vehicle control system as an example, and the method comprises steps 201-208.

[0041] In step 201, a first detection result indicating whether the engine meets a detection condition is obtained.

[0042] In one possible implementation, obtaining the first detection result indicating whether the engine meets the detection condition comprises: obtaining a third detection result and a fourth detection result, the third detection result indicating whether the engine is in an oil-off state, and the fourth detection result indicating whether the engine speed is less than a second threshold; based on the third detection result indicating that the engine is in the oil-off state and the fourth detection result indicating that the engine speed is less than the second threshold, the first detection result indicating that the engine meets the detection condition.

[0043] Optionally, the third detection result for indicating whether the engine is in the fuel cut state is obtained, including but not limited to: the vehicle control system detects the fuel injector, if the fuel injector is not in the injection state, the third detection result indicates that the engine is in the fuel cut state, wherein the fuel injector is located on the vehicle and sprays fuel to the engine.

[0044] For example, the vehicle control system detects the fuel injector in the following manner: the vehicle control system detects whether the fuel injector is in the injection state through the fuel injection tester installed on the vehicle.

[0045] Optionally, the fourth detection result for indicating whether the engine speed is less than the second threshold value is obtained, including but not limited to: the vehicle control system obtains the engine speed from the instrument control system through the CAN (Controller Area Network) bus, compares the obtained engine speed with the second threshold value, and if the engine speed is less than the second threshold value, the fourth detection result indicates that the engine speed is less than the second threshold value.

[0046] The second threshold value is not limited in the embodiments of the present application, for example, the second threshold value can be set based on experience, or the second threshold value can be adjusted according to actual conditions.

[0047] In step 202, based on the first detection result indicating that the engine meets the detection condition, the valve opening state of the EGR is obtained.

[0048] The types of EGR include mechanical EGR or electrically controlled electromagnetic valve EGR. In one possible implementation, after determining that the first detection result indicates that the engine meets the detection condition, the valve opening state is obtained in the following manner for different types of EGR.

[0049] (1) Mechanical EGR

[0050] For example, the vehicle control system detects the valve opening state of the EGR through the video recognition device installed on the vehicle, and determines the valve opening state of the EGR based on the detection result. For example, the video recognition device is installed at the valve of the EGR, and can detect the valve opening state of the EGR.

[0051] In one possible implementation, the video recognition device photographs the opening state of the valve, and identifies the valve opening degree in the photographed result. Based on the photographed valve being in the open state, the valve of the EGR is in the open state; based on the photographed valve being in the closed state, the valve of the EGR is in the closed state.

[0052] (2) Electrically controlled electromagnetic valve EGR

[0053] Exemplarily, the vehicle control system can also detect the opening state of the EGR valve by a video recognition device installed on the vehicle. The vehicle control system can also monitor the opening degree of the EGR valve by an EGR valve opening degree sensor installed on the vehicle. When the opening degree of the EGR valve is less than or equal to the second reference value, the valve of the EGR is in the closed state. When the opening degree of the EGR valve is greater than the second reference value, the valve of the EGR is in the open state.

[0054] Exemplarily, monitoring the opening degree of the EGR valve by an EGR valve opening degree sensor installed on the vehicle includes: the EGR valve opening degree sensor acquires the opening degree of the EGR valve, and converts the opening degree of the EGR valve into a signal voltage and sends it to the engine control system of the vehicle. The vehicle control system can acquire the opening degree of the EGR valve from the engine control system.

[0055] Exemplarily, the vehicle control system can acquire the opening degree of the EGR valve from the engine control system through CAN. The second reference value is not limited in the embodiments of the application. Exemplarily, the reference value can be set to 0 based on experience, or the second reference value can be adjusted according to actual conditions.

[0056] In step 203, based on the opening state of the valve of the EGR being closed, the first intake pressure of the EGR is acquired.

[0057] If the detected opening state of the valve of the EGR is closed, the first intake pressure of the EGR is acquired, including: detecting the first intake pressure of the EGR by an intake pressure sensor installed on the vehicle.

[0058] Exemplarily, the intake pressure sensor is located inside the EGR, which can detect the first intake pressure of the EGR and convert the detected first intake pressure into a signal voltage and send it to the engine control system of the vehicle. The vehicle control system can acquire the first intake pressure of the EGR from the engine control system.

[0059] In step 204, the valve of the EGR is opened.

[0060] For different types of EGR, the valve of the EGR is opened in the following manner.

[0061] (1) Mechanical EGR

[0062] Exemplarily, the vehicle control system controls the opening of the valve of the EGR by controlling the vacuum degree of the EGR intake pipeline, including: the vehicle control system controls the opening of the valve of the EGR by controlling the vacuum degree of the EGR intake pipeline to overcome the resistance of the spring of the valve of the EGR.

[0063] The vehicle control system does not limit the degree of vacuum increase of the EGR intake pipeline, and the degree of vacuum increase of the EGR intake pipeline corresponding to the opening of the EGR valve can be determined based on experiments.

[0064] (2) Electrically controlled electromagnetic valve EGR

[0065] The vehicle control system directly controls the opening of the electrically controlled electromagnetic valve EGR through the engine control system to control the opening of the EGR valve.

[0066] In step 205, the second intake pressure of the EGR is obtained according to the reference frequency.

[0067] In one possible implementation, the second intake pressure of the EGR is detected by the intake pressure sensor installed on the vehicle in the same way as in step 203. The intake pressure sensor converts the detected second intake pressure into a signal voltage and sends it to the engine control system of the vehicle, and the vehicle control system can obtain the second intake pressure of the EGR from the engine control system.

[0068] The reference frequency is not limited in the embodiments of the present application, and the reference frequency can be set based on experience or adjusted according to actual conditions.

[0069] In step 206, a second detection result indicating whether the second intake pressure is stable is obtained.

[0070] For example, obtaining the second detection result indicating whether the second intake pressure is stable includes: calculating the difference between the second intake pressure obtained this time and the second intake pressure obtained at the adjacent time last time; and based on the difference being less than a third threshold, the second detection result indicates that the second intake pressure is stable.

[0071] Optionally, the second intake pressure obtained this time and the second intake pressure obtained at the adjacent time last time refer to the second intake pressures obtained at adjacent two times when the second intake pressure of the EGR is obtained according to the reference frequency. For example, the way of setting the third threshold includes but is not limited to setting based on experience.

[0072] In step 207, based on the second detection result indicating that the second intake pressure is stable, the difference between the second intake pressure and the first intake pressure is calculated.

[0073] In one possible implementation, after determining that the second detection result indicates that the second intake pressure is stable, the difference between the second intake pressure and the first intake pressure is calculated, including: the vehicle control system takes the calculation result of the second intake pressure minus the first intake pressure as the difference between the second intake pressure and the first intake pressure.

[0074] In step 208, based on the difference being less than a first threshold, it is determined that there is a traffic fault in the EGR.

[0075] In one possible implementation, the vehicle control system compares the difference between the second intake pressure and the first intake pressure with a pre-set first threshold. If the difference is less than the first threshold, it increments a first reference value by one. This first reference value is used to count the number of times the difference is less than the first threshold. If the increment of the first reference value is greater than a fourth threshold, it is determined that there is a flow fault in the EGR. This avoids situations where the difference between the second and first intake pressures occasionally falls below the first threshold, but no flow fault occurs in the EGR.

[0076] Optionally, the increase in the first reference value can be determined by subtracting the value before the increase from the value after the increase. This application does not limit the initial value of the first reference value; for example, the first reference value can be any positive integer.

[0077] In another possible implementation, the vehicle control system compares the difference between the second intake pressure and the first intake pressure with a first threshold. Based on the fact that the difference is less than the first threshold within a reference time period, it determines that there is a flow fault in the EGR.

[0078] For example, after determining that there is a traffic failure in EGR, a prompt can be made regarding the traffic failure in EGR, which can be in the form of text, image or voice.

[0079] In one possible implementation, the vehicle control system controls the vehicle's instrument control system to indicate an EGR flow failure, including: the vehicle control system controlling the instrument control system to display text or image information indicating an EGR flow failure on its display screen, or the vehicle control system controlling the instrument control system to emit voice information indicating an EGR flow failure.

[0080] Combining the above methods and processes, with Figure 3 The following is an example of a diagnostic principle diagram for EGR flow fault provided in an embodiment of this application. First, it is determined whether the engine meets the detection conditions 301. If the engine meets the detection conditions, it is determined whether the EGR valve is open 302. If the EGR valve is closed, the first intake pressure of the EGR is obtained 303. Then, the EGR valve is controlled to open 304, and the second intake pressure of the EGR is obtained according to a reference frequency 305. It is then determined whether the second intake pressure is stable 306. If the second intake pressure is stable, the difference between the second intake pressure and the first intake pressure is calculated 307.

[0081] determining whether the difference between the second intake pressure and the first intake pressure is less than a first threshold value 308, in a case that the difference between the second intake pressure and the first intake pressure is greater than or equal to the first threshold value, the EGR does not exist flow failure 309; in a case that the difference between the second intake pressure and the first intake pressure is less than the first threshold value, the first reference value is added by one 310. Determining whether the increased reference value is greater than a fourth threshold value 311, in a case that the increased reference value is greater than the fourth threshold value, the EGR exists flow failure 312.

[0082] The embodiment of the present application acquires the first intake pressure before the valve of the EGR is opened and the second intake pressure after the valve of the EGR is opened in a case that the engine satisfies the detection condition. The difference between the second intake pressure and the first intake pressure is calculated, and the difference is compared with the first threshold value, whether the EGR exists flow failure is reflected by the difference between the first intake pressure and the second intake pressure, the diagnosis of the EGR flow failure is realized, and the monitoring of the normal use of the EGR function is ensured.

[0083] Referring to Figure 4 The embodiment of the present application provides a flow failure diagnosis device, which comprises:

[0084] The first acquisition module 401 is used for acquiring a first detection result used for indicating whether the engine satisfies a detection condition;

[0085] The second acquisition module 402 is used for acquiring a valve opening state of an exhaust gas recirculation system (EGR) based on the first detection result indicating that the engine satisfies the detection condition;

[0086] The third acquisition module 403 is used for acquiring a first intake pressure of the EGR based on the valve opening state of the EGR being closed;

[0087] The control module 404 is used for controlling the valve of the EGR to be opened;

[0088] The fourth acquisition module 405 is used for acquiring a second intake pressure of the EGR according to a reference frequency;

[0089] The fifth acquisition module 406 is used for acquiring a second detection result used for indicating whether the second intake pressure is stable;

[0090] The calculation module 407 is used for calculating the difference between the second intake pressure and the first intake pressure based on the second detection result indicating that the second intake pressure is stable;

[0091] The determination module 408 is used for determining that the EGR exists flow failure based on the difference being less than a first threshold value.

[0092] In a possible implementation, the first obtaining module 401 is configured to obtain a third detection result and a fourth detection result, the third detection result being used to indicate whether the engine is in the fuel cut state, and the fourth detection result being used to indicate whether the engine speed is less than a second threshold value; and the first detection result indicates that the engine meets the detection condition based on the third detection result indicating that the engine is in the fuel cut state and the fourth detection result indicating that the engine speed is less than the second threshold value.

[0093] In a possible implementation, the fifth obtaining module 406 is configured to calculate a difference between the current obtained second intake pressure and a second intake pressure obtained at a last adjacent time; and the second detection result indicates that the second intake pressure is stable based on the difference being less than a third threshold value.

[0094] In a possible implementation, the determining module 408 is configured to increase a first reference value by one based on the difference being less than the first threshold value, the first reference value being used to count the number of times that the difference is less than the first threshold value; and determine that the EGR has a flow fault based on the increased first reference value being greater than a fourth threshold value.

[0095] In a possible implementation, the determining module 408 is further configured to prompt that the EGR has the flow fault, and the prompting manner includes at least one of a text form, a picture form, or a voice form.

[0096] The device obtains the first intake pressure before the valve of the EGR is opened and the second intake pressure after the valve of the EGR is opened when the engine meets the detection condition. The difference between the second intake pressure and the first intake pressure is calculated, and the difference is compared with the first threshold value. Whether the EGR has the flow fault is reflected by the difference between the first intake pressure and the second intake pressure, so as to diagnose the EGR flow fault and monitor the normal use of the EGR function.

[0097] It should be noted that the device provided in the above embodiments is only used as an example for dividing the above functional modules in achieving the functions thereof, and in actual applications, the above functions can be completed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the above described functions. In addition, the device and method embodiments provided in the above embodiments belong to the same concept, and the specific implementation process is described in the method embodiments, which will not be repeated here.

[0098] Figure 5Fig. 1 is a structural schematic diagram of a server provided by an embodiment of the present application. The server can have great differences due to different configurations or performances, and can include one or more processors 901 and one or more memories 902, wherein the one or more memories 902 store at least one computer program, which is loaded and executed by the one or more processors 901, so that the server implements the traffic fault diagnosis method provided by each method embodiment. Of course, the server can also have a wired or wireless network interface, a keyboard, an input and output interface, and other components for realizing the functions of the device, and the details are not described herein.

[0099] Figure 6 Fig. 2 is a structural schematic diagram of a traffic fault diagnosis device provided by an embodiment of the present application. The device can be a terminal, for example, can be a vehicle-mounted system, a smart phone, a tablet computer, a player, a notebook computer or a desktop computer. The terminal can also be referred to as a user equipment, a portable terminal, a laptop terminal, a desktop terminal, and other names.

[0100] Generally, the terminal includes a processor 1501 and a memory 1502.

[0101] The processor 1501 can include one or more processing cores, such as a 4-core processor, an 8-core processor, etc. The processor 1501 can be implemented in at least one of a hardware form of a DSP (Digital Signal Processing), an FPGA (Field-Programmable Gate Array), and a PLA (Programmable Logic Array). The processor 1501 can also include a main processor and a coprocessor. The main processor is a processor for processing data in an awake state, also known as a CPU (Central Processing Unit). The coprocessor is a low-power processor for processing data in a standby state. In some embodiments, the processor 1501 can be integrated with a GPU (Graphics Processing Unit) for rendering and drawing the content required to be displayed by the display screen. In some embodiments, the processor 1501 can also include an AI (Artificial Intelligence) processor for processing machine learning-related computing operations.

[0102] The memory 1502 can include one or more computer-readable storage media. The computer-readable storage media can be non-transitory. The memory 1502 can also include high-speed random access memory and can include nonvolatile memory, such as one or more magnetic disk storage devices, optical storage devices, flash memory devices, or other nonvolatile solid-state storage devices. In some embodiments, the non-transitory computer-readable storage medium of the memory 1502 is used to store at least one instruction for execution by the processor 1501 to cause the terminal to implement the method of diagnosing a traffic fault provided by the method embodiments of the present application.

[0103] In some embodiments, the terminal can further optionally include a peripheral device interface 1503 and at least one peripheral device. The processor 1501, the memory 1502, and the peripheral device interface 1503 can be connected by a bus or a signal line. Each peripheral device can be connected to the peripheral device interface 1503 through a bus, a signal line, or a circuit board. Specifically, the peripheral device includes at least one of a radio frequency circuit 1504, a display screen 1505, a camera assembly 1506, an audio circuit 1507, and a power supply 1508.

[0104] The peripheral device interface 1503 can be used to connect at least one peripheral device related to I / O (Input / Output) to the processor 1501 and the memory 1502. In some embodiments, the processor 1501, the memory 1502, and the peripheral device interface 1503 are integrated on the same chip or circuit board; in some other embodiments, any one or two of the processor 1501, the memory 1502, and the peripheral device interface 1503 can be implemented on a separate chip or circuit board, and the present embodiment is not limited in this regard.

[0105] The radio frequency circuit 1504 is configured to receive and send RF (Radio Frequency) signals, also known as electromagnetic signals. The radio frequency circuit 1504 communicates with communication networks and other communication devices through electromagnetic signals. The radio frequency circuit 1504 converts electrical signals to electromagnetic signals for transmission, or vice versa. Optionally, the radio frequency circuit 1504 includes an antenna system, an RF transceiver, one or more amplifiers, a tuner, an oscillator, a digital signal processor, a codec chipset, a subscriber identity module card, and the like. The radio frequency circuit 1504 can communicate with other terminals through at least one wireless communication protocol. The wireless communication protocol includes, but is not limited to, a metropolitan area network, various generations of mobile communication networks (2G, 3G, 4G, and 5G), a wireless local area network, and / or a WiFi (Wireless Fidelity) network. In some embodiments, the radio frequency circuit 1504 can also include NFC (Near Field Communication) related circuitry, which is not limited in the present application.

[0106] The display screen 1505 is configured to display a UI (User Interface). The UI can include graphics, text, icons, video, and any combination thereof. When the display screen 1505 is a touch display screen, the display screen 1505 also has the ability to collect touch signals on or above the surface of the display screen 1505. The touch signals can be input as control signals to the processor 1501 for processing. At this time, the display screen 1505 can also be used to provide virtual buttons and / or virtual keyboards, also known as soft buttons and / or soft keyboards. In some embodiments, the display screen 1505 can be one, arranged on the front panel of the terminal; in other embodiments, the display screen 1505 can be at least two, arranged on different surfaces of the terminal or in a folding design; in other embodiments, the display screen 1505 can be a flexible display screen, arranged on a curved surface or a folding surface of the terminal. Even, the display screen 1505 can also be arranged in an irregular shape, that is, a special-shaped screen. The display screen 1505 can be made of materials such as LCD (Liquid Crystal Display) and OLED (Organic Light-Emitting Diode).

[0107] The camera component 1506 is configured to capture images or videos. Optionally, the camera component 1506 includes a front-facing camera and a rear-facing camera. Typically, the front-facing camera is disposed on the front panel of the terminal, and the rear-facing camera is disposed on the back of the terminal. In some embodiments, the rear-facing camera is at least two, which are any one of a main camera, a depth-of-field camera, a wide-angle camera, and a telephoto camera, to realize the background blur function by fusing the main camera and the depth-of-field camera, the panorama shooting and VR (Virtual Reality) shooting function by fusing the main camera and the wide-angle camera, or other fusion shooting functions. In some embodiments, the camera component 1506 can further include a flash. The flash can be a single-color-temperature flash or a dual-color-temperature flash. The dual-color-temperature flash refers to the combination of a warm light flash and a cold light flash, which can be used for light compensation at different color temperatures.

[0108] The audio circuit 1507 can include a microphone and a speaker. The microphone is configured to capture sound waves of a user and an environment, and convert the sound waves into an electrical signal input to the processor 1501 for processing or to the radio frequency circuit 1504 to realize voice communication. For the purpose of stereo sound collection or noise reduction, the microphone can be multiple, which are respectively disposed at different parts of the terminal. The microphone can also be an array microphone or an omnidirectional collection microphone. The speaker is configured to convert an electrical signal from the processor 1501 or the radio frequency circuit 1504 into sound waves. The speaker can be a traditional diaphragm speaker or a piezoelectric ceramic speaker. When the speaker is a piezoelectric ceramic speaker, it can not only convert an electrical signal into a sound wave audible to humans, but also convert an electrical signal into an inaudible sound wave to humans for ranging purposes, etc. In some embodiments, the audio circuit 1507 can further include a headphone jack.

[0109] The power supply 1508 is configured to supply power to each component in the terminal. The power supply 1508 can be an alternating current, a direct current, a disposable battery, or a rechargeable battery. When the power supply 1508 includes a rechargeable battery, the rechargeable battery can support wired charging or wireless charging. The rechargeable battery can also be used to support fast charging technology.

[0110] In some embodiments, the terminal further includes one or more sensors 1509. The one or more sensors 1509 include, but are not limited to, an acceleration sensor 1510, a gyroscope sensor 1511, a pressure sensor 1512, an optical sensor 1513, and a proximity sensor 1514.

[0111] The acceleration sensor 1510 can detect the acceleration magnitude in three coordinate axes of a coordinate system established by the terminal. For example, the acceleration sensor 1510 can be used to detect the components of the gravitational acceleration in three coordinate axes. The processor 1501 can control the display screen 1505 to display the user interface in a landscape view or a portrait view according to the gravitational acceleration signals collected by the acceleration sensor 1510. The acceleration sensor 1510 can also be used for game or user motion data collection.

[0112] The gyroscope sensor 1511 can detect the body orientation and rotation angle of the terminal. The gyroscope sensor 1511 can work with the acceleration sensor 1510 to collect the 3D motion of the user to the terminal. The processor 1501 can implement the following functions according to the data collected by the gyroscope sensor 1511: motion sensing (e.g., changing the UI according to the user's tilt operation), image stabilization when shooting, game control, and inertial navigation.

[0113] The pressure sensor 1512 can be arranged on the side frame of the terminal and / or the lower layer of the display screen 1505. When the pressure sensor 1512 is arranged on the side frame of the terminal, the user's holding signal to the terminal can be detected, and the left-hand or right-hand recognition or shortcut operation can be performed by the processor 1501 according to the holding signal collected by the pressure sensor 1512. When the pressure sensor 1512 is arranged on the lower layer of the display screen 1505, the controllable control on the UI interface can be controlled by the processor 1501 according to the user's pressure operation on the display screen 1505. The controllable control includes at least one of a button control, a scroll bar control, an icon control, and a menu control.

[0114] The optical sensor 1513 is used to collect the ambient light intensity. In one embodiment, the processor 1501 can control the display brightness of the display screen 1505 according to the ambient light intensity collected by the optical sensor 1513. Specifically, when the ambient light intensity is high, the display brightness of the display screen 1505 is increased; when the ambient light intensity is low, the display brightness of the display screen 1505 is decreased. In another embodiment, the processor 1501 can also dynamically adjust the shooting parameters of the camera assembly 1506 according to the ambient light intensity collected by the optical sensor 1513.

[0115] The proximity sensor 1514, also known as a distance sensor, is usually arranged on the front panel of the terminal. The proximity sensor 1514 is used to collect the distance between the user and the front of the terminal. In one embodiment, when the proximity sensor 1514 detects that the distance between the user and the front of the terminal gradually decreases, the display screen 1505 is switched from the bright screen state to the screen-off state by the processor 1501; when the proximity sensor 1514 detects that the distance between the user and the front of the terminal gradually increases, the display screen 1505 is switched from the screen-off state to the bright screen state by the processor 1501.

[0116] Those skilled in the art can understand that, Figure 6 The structure shown in the figure does not constitute a limitation on the terminal, and can include more or fewer components than the figure, or combine certain components, or adopt a different component arrangement.

[0117] In an example embodiment, a computer device is also provided, which includes a processor and a memory having at least one computer program stored therein. The at least one computer program is loaded and executed by one or more processors to enable the computer device to implement any of the above-described flow fault diagnosis methods.

[0118] In an example embodiment, a computer readable storage medium is also provided, which stores at least one computer program, which is loaded and executed by a processor of a computer device to enable the computer to implement any of the above-described flow fault diagnosis methods.

[0119] In a possible implementation manner, the above computer readable storage medium can be a read-only memory (ROM), a random access memory (RAM), a compact disc read-only memory (CD-ROM), a magnetic tape, a floppy disk, and an optical data storage device, etc.

[0120] In an example embodiment, a computer program product or computer program is also provided, which includes computer instructions stored in a computer readable storage medium. The processor of the computer device reads the computer instructions from the computer readable storage medium, and the processor executes the computer instructions to enable the computer device to implement any of the above-described flow fault diagnosis methods.

[0121] It should be noted that the information (including but not limited to user device information, user personal information, etc.), data (including but not limited to data for analysis, stored data, displayed data, etc.) and signals involved in the present application are all authorized by the user or fully authorized by all parties, and the collection, use and processing of related data need to comply with relevant laws, regulations and standards of relevant countries and regions. For example, the valve opening state of the EGR, the first intake pressure and the second intake pressure involved in the present application are obtained under sufficient authorization.

[0122] It should be understood that the "multiple" mentioned herein refers to two or more than two. The "and / or" describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent the three cases of A existing alone, A and B existing together, and B existing alone. The character " / " generally represents that the associated objects before and after it are in an "or" relationship.

[0123] It should be noted that the terms "first", "second", etc. (if any) in the specification and claims of the present application are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0124] The above is only an exemplary embodiment of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method of diagnosing a flow fault, characterized by, The method comprises: obtaining an engine fuel cut state and an engine speed, the engine fuel cut state comprising the engine being fuel cut or the engine not being fuel cut; obtaining an exhaust gas recirculation system (EGR) valve opening state based on the engine fuel cut state being the fuel cut state and the engine speed being less than a second threshold value; obtaining a first intake pressure of the EGR based on the EGR valve opening state being closed; controlling the EGR valve to open; obtaining a second intake pressure of the EGR at a reference frequency; calculating a first difference between the second intake pressure obtained this time and a second intake pressure obtained at a last adjacent time; calculating a second difference between the second intake pressure and the first intake pressure based on the first difference being less than a third threshold value; determining that the EGR has the flow fault based on the second difference being less than a first threshold value.

2. The method of claim 1, wherein, The determining that the EGR has the flow fault based on the second difference being less than the first threshold value comprises: controlling a first reference value to increase by one based on the second difference being less than the first threshold value, the first reference value being used to count a number of times that the difference is less than the first threshold value; determining that the EGR has the flow fault based on the first reference value increasing by a value greater than a fourth threshold value.

3. The method of claim 1, wherein, After the determining that the EGR has the flow fault, the method further comprises: prompting that the EGR has the flow fault, the prompting mode comprising at least one of a text form, a picture form, or a voice form.

4. A flow failure diagnostic apparatus characterized by comprising: The device comprises: a first obtaining module configured to obtain an engine fuel cut state and an engine speed, the engine fuel cut state comprising the engine being fuel cut or the engine not being fuel cut; a second obtaining module configured to obtain an exhaust gas recirculation system (EGR) valve opening state based on the engine fuel cut state being the fuel cut state and the engine speed being less than a second threshold value; a third obtaining module configured to obtain a first intake pressure of the EGR based on the EGR valve opening state being closed; a control module configured to control the EGR valve to open; a fourth obtaining module configured to obtain a second intake pressure of the EGR at a reference frequency; a fifth obtaining module configured to calculate a first difference between the second intake pressure obtained this time and a second intake pressure obtained at a last adjacent time; a calculation module configured to calculate a second difference between the second intake pressure and the first intake pressure based on the first difference being less than a third threshold value; a determination module configured to determine that the EGR has the flow fault based on the second difference being less than a first threshold value.

5. A computer device, comprising: The computer device comprises a processor and a memory, and the memory stores at least one computer program, which is loaded and executed by the processor, so that the computer device implements the flow fault diagnosis method according to any one of claims 1 to 3.

6. A computer-readable storage medium, characterized in that, The computer readable storage medium stores at least one computer program, which is loaded and executed by the processor, so that the computer implements the flow fault diagnosis method according to any one of claims 1 to 3.

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