Accelerator signal fault diagnosis method and device, electronic equipment and storage medium

Abstract

The application provides a throttle signal fault diagnosis method and device, electronic equipment and storage medium, and belongs to the technical field of automobile fault diagnosis. The method comprises the following steps: acquiring a fault detection signal of an engine; acquiring a clutch signal and a vehicle speed signal in the case that it is determined based on the fault detection signal that the engine has a non-target type fault; acquiring a throttle signal in the case that it is determined based on the clutch signal that the clutch is fully engaged and based on the vehicle speed signal that the current vehicle speed is greater than a target vehicle speed; and determining that there is a throttle signal fault in the case that it is determined based on the throttle signal that a throttle opening degree mutation occurs a target number of times within a set time length. The application determines whether a throttle opening degree mutation occurs a target number of times within a set time length through the throttle signal, and then determines whether the throttle signal has a fault, thereby solving the technical problem that the existing throttle signal fault diagnosis method cannot diagnose intermittent throttle faults.

Description

Technical Field

[0001] This invention relates to the field of automotive fault diagnosis technology, specifically to a method, device, electronic device, and storage medium for diagnosing throttle signal faults. Background Technology

[0002] Current diagnostic methods for throttle signal faults can only diagnose persistent throttle malfunctions. They fail to detect intermittent throttle malfunctions, such as when the throttle signal is lost for approximately 0.1 seconds and then immediately recovers. Therefore, existing throttle signal fault diagnosis methods cannot diagnose intermittent throttle malfunctions. Summary of the Invention

[0003] In view of this, it is necessary to provide a throttle signal fault diagnosis method, device, electronic device and storage medium to solve the technical problem that existing throttle signal fault diagnosis methods cannot diagnose intermittent throttle faults.

[0004] To address the above problems, this invention provides a throttle signal fault diagnosis method, comprising:

[0005] Acquire engine fault detection signals; if it is determined that the engine has a non-target type fault based on the fault detection signals, acquire clutch signals and vehicle speed signals.

[0006] If the clutch is determined to be fully engaged based on the clutch signal, and the current vehicle speed is determined to be greater than the target vehicle speed based on the vehicle speed signal, then the throttle signal is acquired.

[0007] If, based on the throttle signal, a target number of sudden changes in throttle opening occur within a set time period, a throttle signal fault is determined to exist.

[0008] In one possible implementation, the target type fault includes at least one of the following: open circuit fault, short circuit fault, jamming fault, and two-signal correlation fault.

[0009] In one possible implementation, determining a throttle signal fault based on the throttle signal, where a target number of sudden throttle opening changes occur within a set time period, includes:

[0010] If, based on the throttle signal, a first target number of sudden changes in throttle opening occurs within a first set time period, it is determined that a throttle signal fault exists.

[0011] Among them, the first sudden change in throttle opening is a sudden change in throttle opening with a change range greater than 20%.

[0012] In one possible implementation, determining a throttle signal fault based on the throttle signal, where a target number of sudden throttle opening changes occur within a set time period, further includes:

[0013] If, based on the throttle signal, a second throttle opening abrupt change occurs a second time within a second set time period, indicating a second target number of occurrences, it is determined that a throttle signal fault exists.

[0014] Among them, the second throttle opening sudden change is: within the third set time period, the throttle opening changes from more than 30% to 0, and then recovers from 0 to more than 30% of the throttle opening;

[0015] The third set duration is less than the second set duration.

[0016] In one possible implementation, the second set duration is longer than the first set duration.

[0017] In one possible implementation, the second target number is greater than the first target number.

[0018] In one possible implementation, obtaining the clutch signal includes:

[0019] Obtain the clutch signal sent by the VECU via a message, or obtain the clutch signal sent by the clutch contact switch.

[0020] On the other hand, the present invention also provides a throttle signal fault diagnosis device, comprising:

[0021] The first acquisition module is used to acquire the engine fault detection signal, and if it is determined that the engine has a non-target type fault based on the fault detection signal, it acquires the clutch signal and the vehicle speed signal.

[0022] The second acquisition module is used to acquire the throttle signal when it is determined that the clutch is fully engaged based on the clutch signal and the current vehicle speed is greater than the target vehicle speed based on the vehicle speed signal.

[0023] The fault diagnosis module is used to determine that there is a throttle signal fault when the throttle opening changes a target number of times within a set time period, based on the throttle signal.

[0024] On the other hand, the present invention also provides an electronic device, including a memory and a processor, wherein,

[0025] The memory is used to store programs;

[0026] The processor, coupled to the memory, is used to execute the program stored in the memory to implement the steps of the throttle signal fault diagnosis method as described in any of the preceding claims.

[0027] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the throttle signal fault diagnosis method as described in any of the preceding claims.

[0028] The beneficial effects of the above implementation are as follows: The throttle signal fault diagnosis method, device, electronic equipment, and storage medium provided by this invention, by acquiring the engine fault detection signal and determining that the engine has a non-target type fault, then acquires the clutch signal and vehicle speed signal; if the clutch is fully engaged based on the clutch signal and the current vehicle speed is greater than the target vehicle speed based on the vehicle speed signal, the throttle signal is acquired; if a target number of sudden changes in throttle opening occur within a set time period based on the throttle signal, a throttle signal fault is determined. This invention first needs to eliminate possible engine faults through the engine fault detection signal, and only after determining that the engine does not have a fault does it determine whether the throttle signal is faulty, thus avoiding misjudgment. When determining whether the throttle signal is faulty, generally speaking, if the clutch is fully engaged based on the clutch signal and the current vehicle speed is greater than the target vehicle speed based on the vehicle speed signal, the throttle opening will not experience frequent sudden changes. This invention determines whether the throttle opening changes a target number of times within a set time period by judging whether the throttle signal is faulty. Even if the throttle signal is lost for a short time and can be recovered immediately, the fault can still be accurately determined, thereby solving the technical problem that existing throttle signal fault diagnosis methods cannot diagnose intermittent throttle faults. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 A flowchart of an embodiment of the throttle signal fault diagnosis method provided by the present invention;

[0031] Figure 2 A flowchart of another embodiment of the throttle signal fault diagnosis method provided by the present invention;

[0032] Figure 3 A graph of the throttle signal in one embodiment of the present invention;

[0033] Figure 4A schematic block diagram of an embodiment of the throttle signal fault diagnosis device provided by the present invention;

[0034] Figure 5 A schematic diagram of an embodiment of the electronic device provided by the present invention. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0036] In the description of the embodiments of this application, unless otherwise stated, "a plurality of" means two or more.

[0037] In this embodiment of the invention, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, apparatus, product or device that includes a series of steps or modules is not necessarily limited to those steps or modules that are explicitly listed, but may include other steps or modules that are not explicitly listed or that are inherent to such process, method, product or device.

[0038] The naming or numbering of steps in the embodiments of the present invention does not mean that the steps in the method flow must be executed in the time / logical order indicated by the naming or numbering. The execution order of the named or numbered process steps can be changed according to the technical purpose to be achieved, as long as the same or similar technical effect can be achieved.

[0039] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0040] This invention provides a method, apparatus, electronic device, and storage medium for diagnosing throttle signal faults, which will be described below.

[0041] like Figure 1 As shown, the present invention provides a method for diagnosing throttle signal faults, comprising:

[0042] S101. Obtain the engine fault detection signal. If it is determined that the engine has a non-target type fault based on the fault detection signal, obtain the clutch signal and the vehicle speed signal.

[0043] S102. If it is determined that the clutch is fully engaged based on the clutch signal and the current vehicle speed is greater than the target vehicle speed based on the vehicle speed signal, obtain the throttle signal.

[0044] S103. If, based on the throttle signal, it is determined that a target number of sudden changes in throttle opening occur within a set time period, a throttle signal fault is identified.

[0045] It is understood that the throttle signal fault diagnosis method provided by the present invention needs to first rule out the possibility of engine failure through engine fault detection signals in order to avoid false detection of throttle signals.

[0046] When the clutch is fully engaged based on the clutch signal and the current vehicle speed is greater than the target vehicle speed based on the vehicle speed signal, the throttle signal will generally not change frequently. In this case, the presence of a fault can be determined by the change in the throttle signal (i.e., the change in throttle opening).

[0047] In some embodiments, the target type fault includes at least one of: open circuit fault, short circuit fault, jamming fault, and two-signal correlation fault.

[0048] Understandably, an open-circuit fault in a generator refers to an open circuit in a wire or winding within the generator, preventing it from operating normally. An engine short-circuit fault refers to a short circuit in the engine's internal electronic circuitry. The main causes of engine stalling faults include fuel system problems, battery and ignition system problems, engine oil problems, cooling system problems, and mechanical and electrical problems. An engine two-signal correlation fault typically refers to a problem with the correlation between two signals in the engine control system, causing the system to malfunction. This fault can be caused by various reasons, including sensor malfunctions, wiring problems, or control module failures.

[0049] In some embodiments, determining a throttle signal fault when a target number of sudden throttle opening changes occur within a set time period based on the throttle signal includes:

[0050] If, based on the throttle signal, a first target number of sudden changes in throttle opening occurs within a first set time period, it is determined that a throttle signal fault exists.

[0051] Among them, the first sudden change in throttle opening is a sudden change in throttle opening with a change range greater than 20%.

[0052] Understandably, the first set duration can be 1 second, and the first target number of times can be greater than or equal to 2 times, or it can be 3 or 4 times.

[0053] In some embodiments, when determining that a throttle signal fault exists based on the throttle signal, if a target number of sudden throttle opening changes occur within a set time period, the method further includes:

[0054] If, based on the throttle signal, a second throttle opening abrupt change occurs a second target number of times within a second set time period, a throttle signal fault is determined to exist; the second set time period is longer than the first set time period; and the second target number of times is greater than the first target number of times.

[0055] Among them, the second throttle opening sudden change is: within the third set time period, the throttle opening changes from more than 30% to 0, and then recovers from 0 to more than 30% of the throttle opening;

[0056] The third set duration is less than the second set duration.

[0057] Understandably, the second set duration can be 30 seconds or other durations, and the third set duration can be the same as or different from the second set duration, for example, both can be 1 second or other durations.

[0058] In some embodiments, acquiring the clutch signal includes:

[0059] Obtain the clutch signal sent by the VECU via a message, or obtain the clutch signal sent by the clutch contact switch.

[0060] In some embodiments, such as Figure 2 As shown, if no fault is found after the engine diagnoses the throttle signal according to the existing strategy, the next diagnostic step begins. The diagnostic logic marked 1 in the diagram only needs to count the throttle change characteristics within 1 second, because a real driver would not perform such an operation. The diagnostic logic marked 2 in the diagram requires the ECU to perform window analysis on the throttle signal, with each 30-second time window moving at second intervals. If a window meets the condition of 5 or more sudden throttle signal changes, then a throttle signal fault is determined.

[0061] Figure 2 In this system, clutch signals sometimes originate from other controllers, such as the VECU (Vehicle Virtual Controller), which sends them via messages, and sometimes from the clutch contact switch. Determining whether the clutch signal and vehicle speed exceed a certain value is crucial to ensuring the vehicle operates normally.

[0062] Gear shifting must be avoided during the diagnostic process to prevent it from affecting the throttle fault diagnosis. The throttle signal used for diagnosis must be the original throttle signal, not a filtered one.

[0063] In some embodiments, such as Figure 3 As shown, the vehicles on the market have exhibited the following throttle signals. The green curve represents the actual throttle signal collected. The throttle returned to zero multiple times. However, it can be seen from the throttle signal that the black curve represents the driver's true intention. Existing diagnostic methods cannot diagnose this type of throttle signal fault. The method proposed in this solution can quickly and accurately diagnose this type of throttle fault.

[0064] Key technical points of the throttle signal fault diagnosis method provided by this invention:

[0065] 1. A throttle malfunction can be diagnosed by judging whether the throttle returns to 0 multiple times within 1 second.

[0066] 2. Diagnose throttle malfunctions by analyzing the characteristics of the throttle curve through a time window and comparing it with the driver's actual intentions.

[0067] like Figure 4 As shown, the present invention also provides a throttle signal fault diagnosis device 400, comprising:

[0068] The first acquisition module 401 is used to acquire the engine fault detection signal, and when it is determined that the engine has a non-target type fault based on the fault detection signal, acquire the clutch signal and the vehicle speed signal.

[0069] The second acquisition module 402 is used to acquire the throttle signal when it is determined that the clutch is fully engaged based on the clutch signal and the current vehicle speed is greater than the target vehicle speed based on the vehicle speed signal.

[0070] The fault judgment module 403 is used to determine that there is a throttle signal fault when the throttle opening changes a target number of times within a set time period based on the throttle signal.

[0071] It is understood that the throttle signal fault diagnosis device 400 provided by this invention, after acquiring the engine fault detection signal and determining that the engine has a non-target type fault, acquires the clutch signal and vehicle speed signal; if the clutch is fully engaged based on the clutch signal and the current vehicle speed is greater than the target vehicle speed based on the vehicle speed signal, the throttle signal is acquired; if the throttle signal determines that a target number of sudden changes in throttle opening occur within a set time period, a throttle signal fault is determined to exist. This invention first needs to eliminate possible engine faults through the engine fault detection signal, and only after determining that the engine is not faulty does it determine whether the throttle signal is faulty, thus avoiding misjudgment. When determining whether the throttle signal is faulty, generally speaking, if the clutch is fully engaged based on the clutch signal and the current vehicle speed is greater than the target vehicle speed based on the vehicle speed signal, the throttle opening will not experience frequent sudden changes. This invention determines whether the throttle opening changes a target number of times within a set time period by judging whether the throttle signal is faulty. Even if the throttle signal is lost for a short time and can be recovered immediately, the fault can still be accurately determined, thereby solving the technical problem that existing throttle signal fault diagnosis methods cannot diagnose intermittent throttle faults.

[0072] In some embodiments, the target type fault includes at least one of: open circuit fault, short circuit fault, jamming fault, and two-signal correlation fault.

[0073] In some embodiments, the fault determination module 403 is used to determine that there is a throttle signal fault when a first target number of sudden changes in throttle opening occurs within a first set time period based on the throttle signal.

[0074] Among them, the first sudden change in throttle opening is a sudden change in throttle opening with a change range greater than 20%.

[0075] Understandably, the first set duration can be 1 second, and the first target number of times can be greater than or equal to 2 times, or it can be 3 or 4 times.

[0076] In some embodiments, the fault determination module 403 is further configured to determine that there is a throttle signal fault when a second target number of sudden changes in throttle opening occurs within a second set time period based on the throttle signal; the second set time period is longer than the first set time period; and the second target number of times is greater than the first target number of times.

[0077] Among them, the second throttle opening sudden change is: within the third set time period, the throttle opening changes from more than 30% to 0, and then recovers from 0 to more than 30% of the throttle opening;

[0078] The third set duration is less than the second set duration.

[0079] Understandably, the second set duration can be 30 seconds or other durations, and the third set duration can be the same as or different from the second set duration, for example, both can be 1 second or other durations.

[0080] In some embodiments, the first acquisition module 401 is used to acquire the clutch signal sent by the VECU via a message, or to acquire the clutch signal sent by the clutch contact switch.

[0081] The throttle signal fault diagnosis device provided in the above embodiments can realize the technical solutions described in the embodiments of the above throttle signal fault diagnosis method. The specific implementation principles of each module or unit can be found in the corresponding content in the embodiments of the above throttle signal fault diagnosis method, and will not be repeated here.

[0082] like Figure 5 As shown, the present invention also provides an electronic device 500. The electronic device 500 includes a processor 501, a memory 502, and a display 503. Figure 5 Only some components of the electronic device 500 are shown, but it should be understood that it is not required to implement all the components shown, and more or fewer components may be implemented instead.

[0083] In some embodiments, memory 502 may be an internal storage unit of electronic device 500, such as a hard disk or memory of electronic device 500. In other embodiments, memory 502 may also be an external storage device of electronic device 500, such as a plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, etc. equipped on electronic device 500.

[0084] Furthermore, the memory 502 may include both internal storage units of the electronic device 500 and external storage devices. The memory 502 is used to store application software and various types of data installed on the electronic device 500.

[0085] In some embodiments, processor 501 may be a central processing unit (CPU), microprocessor, or other data processing chip, used to run program code stored in memory 502 or process data, such as the throttle signal fault diagnosis method of the present invention.

[0086] In some embodiments, display 503 may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, or an OLED (Organic Light-Emitting Diode) touchscreen. Display 503 is used to display information from electronic device 500 and to display a visual user interface. Components 501-503 of electronic device 500 communicate with each other via a system bus.

[0087] In some embodiments of the present invention, when the processor 501 executes the throttle signal fault diagnosis program in the memory 502, the following steps can be implemented:

[0088] Acquire engine fault detection signals; if it is determined that the engine has a non-target type fault based on the fault detection signals, acquire clutch signals and vehicle speed signals.

[0089] If the clutch is determined to be fully engaged based on the clutch signal, and the current vehicle speed is determined to be greater than the target vehicle speed based on the vehicle speed signal, then the throttle signal is acquired.

[0090] If, based on the throttle signal, a target number of sudden changes in throttle opening occur within a set time period, a throttle signal fault is determined to exist.

[0091] It should be understood that when the processor 501 executes the throttle signal fault diagnosis program in the memory 502, in addition to the functions mentioned above, it can also perform other functions, as can be found in the description of the corresponding method embodiments above.

[0092] Furthermore, the embodiments of the present invention do not specifically limit the type of electronic device 500 mentioned. Electronic device 500 can be a mobile phone, tablet computer, personal digital assistant (PDA), wearable device, laptop computer, or other portable electronic device. Exemplary embodiments of portable electronic devices include, but are not limited to, portable electronic devices running iOS, Android, Microsoft, or other operating systems. The aforementioned portable electronic device can also be other portable electronic devices, such as a laptop computer with a touch-sensitive surface (e.g., a touch panel). It should also be understood that in some other embodiments of the present invention, electronic device 500 may not be a portable electronic device, but rather a desktop computer with a touch-sensitive surface (e.g., a touch panel).

[0093] In another aspect, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to perform the throttle signal fault diagnosis method provided by the methods described above, the method comprising:

[0094] Acquire engine fault detection signals; if it is determined that the engine has a non-target type fault based on the fault detection signals, acquire clutch signals and vehicle speed signals.

[0095] If the clutch is determined to be fully engaged based on the clutch signal, and the current vehicle speed is determined to be greater than the target vehicle speed based on the vehicle speed signal, then the throttle signal is acquired.

[0096] If, based on the throttle signal, a target number of sudden changes in throttle opening occur within a set time period, a throttle signal fault is determined to exist.

[0097] Those skilled in the art will understand that all or part of the processes of the methods described in the above embodiments can be implemented by a computer program instructing related hardware, and the program can be stored in a computer-readable storage medium. The computer-readable storage medium may be a disk, optical disk, read-only memory, or random access memory, etc.

[0098] The above provides a detailed description of the throttle signal fault diagnosis method, device, electronic equipment, and storage medium provided by the present invention. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, those skilled in the art will recognize that there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A method for diagnosing throttle signal faults, characterized in that, include: Acquire engine fault detection signals; if it is determined that the engine has a non-target type fault based on the fault detection signals, acquire clutch signals and vehicle speed signals. If the clutch is determined to be fully engaged based on the clutch signal, and the current vehicle speed is determined to be greater than the target vehicle speed based on the vehicle speed signal, then the throttle signal is acquired. If, based on the throttle signal, a target number of sudden changes in throttle opening occur within a set time period, it is determined that there is a throttle signal fault. If, based on the throttle signal, a target number of sudden throttle opening changes occur within a set time period, a throttle signal fault is determined, including: If, based on the throttle signal, a first target number of sudden changes in throttle opening occurs within a first set time period, it is determined that a throttle signal fault exists. Among them, the first sudden change in throttle opening is a sudden change in throttle opening with a change range greater than 20%; In determining that a throttle signal fault exists when a target number of sudden throttle opening changes occur within a set time period based on the throttle signal, the method further includes: If, based on the throttle signal, a second throttle opening abrupt change occurs a second time within a second set time period, indicating a second target number of occurrences, it is determined that a throttle signal fault exists. Among them, the second throttle opening sudden change is: within the third set time period, the throttle opening changes from more than 30% to 0, and then recovers from 0 to more than 30% of the throttle opening; The third set duration is less than the second set duration.

2. The throttle signal fault diagnosis method according to claim 1, characterized in that, The target type of fault includes at least one of the following: open circuit fault, short circuit fault, jamming fault, and two-signal correlation fault.

3. The throttle signal fault diagnosis method according to claim 1, characterized in that, The second set duration is longer than the first set duration.

4. The throttle signal fault diagnosis method according to claim 3, characterized in that, The number of times the second target is greater than the number of times the first target is.

5. The throttle signal fault diagnosis method according to any one of claims 1-4, characterized in that, Acquiring clutch signals includes: Obtain the clutch signal sent by the VECU via a message, or obtain the clutch signal sent by the clutch contact switch.

6. A throttle signal fault diagnosis device, characterized in that, include: The first acquisition module is used to acquire the engine fault detection signal, and if it is determined that the engine has a non-target type fault based on the fault detection signal, it acquires the clutch signal and the vehicle speed signal. The second acquisition module is used to acquire the throttle signal when it is determined that the clutch is fully engaged based on the clutch signal and the current vehicle speed is greater than the target vehicle speed based on the vehicle speed signal. The fault diagnosis module is used to determine that there is a throttle signal fault when the throttle opening changes a target number of times within a set time period based on the throttle signal. If, based on the throttle signal, a target number of sudden throttle opening changes occur within a set time period, a throttle signal fault is determined, including: If, based on the throttle signal, a first target number of sudden changes in throttle opening occurs within a first set time period, it is determined that a throttle signal fault exists. Among them, the first sudden change in throttle opening is a sudden change in throttle opening with a change range greater than 20%; In determining that a throttle signal fault exists when a target number of sudden throttle opening changes occur within a set time period based on the throttle signal, the method further includes: If, based on the throttle signal, a second throttle opening abrupt change occurs a second time within a second set time period, indicating a second target number of occurrences, it is determined that a throttle signal fault exists. Among them, the second throttle opening sudden change is: within the third set time period, the throttle opening changes from more than 30% to 0, and then recovers from 0 to more than 30% of the throttle opening; The third set duration is less than the second set duration.

7. An electronic device, characterized in that, Including memory and processor, among which, The memory is used to store programs; The processor, coupled to the memory, is used to execute the program stored in the memory to implement the steps of the throttle signal fault diagnosis method as described in any one of claims 1 to 5.

8. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the throttle signal fault diagnosis method as described in any one of claims 1 to 5.

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