A method, device, equipment and storage medium for avoiding false alarm of abnormal urea concentration

Abstract

The application discloses a method, device and equipment for avoiding false alarm of abnormal urea concentration and a storage medium, and the method comprises the following steps: when the controller is powered on or the vehicle is refueled with urea during power-on, the urea concentration in a preset detection time is pre-detected, and the abnormal fault diagnosis of the urea concentration is frozen before the pre-detection is completed; if the pre-detected urea concentration is unqualified, the abnormal fault diagnosis of the urea concentration is continuously frozen, and the urea concentration is detected again after the running mileage of the vehicle reaches a set value; and if the urea concentration detected again is qualified, the qualified urea concentration is locked and the fault diagnosis is performed. The application can pre-process the urea concentration, and effectively avoid false alarm of the abnormal fault of the urea concentration.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle engine, and particularly relates to a method, device and equipment for avoiding misreporting of abnormal urea concentration and a storage medium. BACKGROUND

[0002] A national six diesel engine aftertreatment system mainly adopts SCR technology to control NOx gas emission, and the SCR technology needs to use 32.5% concentration of vehicle urea as a reagent. The national six regulations require that the actual urea concentration is monitored by using a urea concentration sensor, and adding unqualified urea will report a fault and limit the torque and speed. At present, the mainstream urea concentration sensor on the market is based on the principle of ultrasonic wave, and relies on the physical phenomenon that the transmission speed of ultrasonic wave is different in different concentration liquids to measure the concentration value. When the urea is added and the vehicle is jolted, bubbles may be generated in the urea, and if the bubbles enter the detection area of the ultrasonic wave, the urea concentration measurement will be abnormal, and the urea concentration abnormality fault will be misreported.

[0003] Therefore, how to avoid misreporting of the urea concentration abnormality fault is a technical problem to be solved at present. SUMMARY

[0004] The main purpose of the present application is to provide a method, device, equipment and storage medium for avoiding misreporting of urea concentration abnormality, which can preprocess the urea concentration and effectively avoid misreporting of the urea concentration abnormality fault.

[0005] In a first aspect, the present application provides a method for avoiding misreporting of urea concentration abnormality, which comprises the following steps:

[0006] After the controller is powered on or the vehicle is filled with urea during power-on, the urea concentration in a preset time is pre-detected, and before the pre-detection is completed, the urea concentration abnormality fault diagnosis is frozen;

[0007] If the pre-detected urea concentration is unqualified, the urea concentration abnormality fault diagnosis is continued to be frozen, and after the vehicle running mileage reaches a set value, the urea concentration is detected again;

[0008] If the re-detected urea concentration is qualified, the qualified urea concentration is locked and the fault diagnosis is performed.

[0009] In combination with the first aspect, as an optional implementation manner, when the pre-detected urea concentration in the preset time after the controller is powered on or the vehicle is filled with urea during power-on is qualified, the qualified concentration is locked to perform the fault diagnosis.

[0010] In combination with the first aspect, as an optional implementation manner, when the vehicle running mileage reaches the set value and the detected urea concentration is unqualified, the urea concentration value collected in real time by the urea concentration sensor is used to perform the fault diagnosis.

[0011] With the first aspect, as an optional implementation, when it is determined that the urea concentration is unqualified within the preset detection time, and the accumulated vehicle running mileage reaches the preset value, the urea concentration of the vehicle is the detection value after the last accumulated mileage reaches the preset value.

[0012] With the first aspect, as an optional implementation, when it is detected that the urea is refilled, or the controller is powered on and the liquid level is lower than that before the controller is powered off, the vehicle running mileage is accumulated from zero.

[0013] With the first aspect, as an optional implementation, when the urea concentration exceeds the preset range value, it is determined that the urea concentration is unqualified.

[0014] The preset range value is 30% to 35%.

[0015] With the first aspect, as an optional implementation, the preset time is 5s to 10min, and the preset value is 10km to 100km.

[0016] The second aspect provides a device for avoiding abnormal misreporting of urea concentration, which comprises:

[0017] A detection module is configured to detect the urea concentration within a preset detection time after the controller is powered on or the vehicle is refilled with urea during power-on, and freeze the urea concentration abnormal fault diagnosis before the detection is completed.

[0018] A processing module is configured to continue to freeze the urea concentration abnormal fault diagnosis if the urea concentration detected is unqualified, and detect the urea concentration again after the vehicle running mileage reaches a preset value.

[0019] An execution module is configured to lock the qualified urea concentration and perform fault diagnosis if the urea concentration detected again is qualified.

[0020] The third aspect provides an electronic device, which comprises a processor and a memory having computer readable instructions stored thereon, wherein the computer readable instructions are executed by the processor to implement the method of any one of the first aspect.

[0021] The fourth aspect provides a computer readable storage medium having computer program instructions stored thereon, wherein the computer program instructions are executed by a computer to implement the method of any one of the first aspect.

[0022] The application provides a method, device, equipment and storage medium for avoiding false alarm of abnormal urea concentration, wherein the method comprises the following steps: when the controller is powered on or after the vehicle is refueled with urea, the urea concentration in a preset time is pre-detected, and the urea concentration abnormal fault diagnosis is frozen before the pre-detection is completed; if the pre-detected urea concentration is unqualified, the urea concentration abnormal fault diagnosis is continuously frozen, and the urea concentration is detected again after the vehicle running mileage reaches a set value; and if the re-detected urea concentration is qualified, the qualified urea concentration is locked and the fault diagnosis is performed. The application can pre-process the urea concentration, and effectively avoid false alarm of urea concentration abnormal fault.

[0023] It should be understood that the general description above and the following detailed description are only exemplary and do not limit the application. BRIEF DESCRIPTION OF DRAWINGS

[0024] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments consistent with the application and, together with the description, further serve to explain the principles of the application.

[0025] Figure 1 A flow chart of a method for avoiding false alarm of abnormal urea concentration provided in the embodiments of the application;

[0026] Figure 2 A schematic diagram of a device for avoiding false alarm of abnormal urea concentration provided in the embodiments of the application;

[0027] Figure 3 A schematic diagram of an electronic device provided in the embodiments of the application;

[0028] Figure 4 A schematic diagram of a computer readable program medium provided in the embodiments of the application. DETAILED DESCRIPTION

[0029] The exemplary embodiments will be described in detail herein below with reference to the drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the application. Instead, they are merely examples of apparatuses and methods consistent with some aspects of the application as detailed in the appended claims.

[0030] In addition, the accompanying drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. Some of the block diagrams shown in the accompanying drawings are functional entities, which do not necessarily correspond to physically or logically independent entities.

[0031] The embodiment of the application provides a method, device and equipment for avoiding false alarm of abnormal urea concentration, and can preprocess the urea concentration, thereby effectively avoiding false alarm of abnormal urea concentration.

[0032] To achieve the above technical effects, the general idea of the application is as follows:

[0033] A method for avoiding false alarm of abnormal urea concentration, the method comprising the steps of:

[0034] S101: When the controller is powered on or the vehicle is refueled with urea during power-on, the urea concentration in a preset time is pre-detected, and before the pre-detection is completed, the urea concentration abnormal fault diagnosis is frozen.

[0035] S102: If the pre-detected urea concentration is unqualified, the urea concentration abnormal fault diagnosis is continued to be frozen, and after the vehicle running mileage reaches a set value, the urea concentration is detected again.

[0036] S103: If the urea concentration detected again is qualified, the qualified urea concentration is locked and the fault diagnosis is performed.

[0037] The embodiments of the application are further described in detail below with reference to the accompanying drawings.

[0038] Referring to Figure 1 , Figure 1 Fig. 1 is a flow chart of a method for avoiding false alarm of abnormal urea concentration provided by the application, as shown in Figure 1 the method comprises the steps of:

[0039] Step S101: When the controller is powered on or the vehicle is refueled with urea during power-on, the urea concentration in a preset time is pre-detected, and before the pre-detection is completed, the urea concentration abnormal fault diagnosis is frozen.

[0040] Specifically, after the controller is powered on or refueled with urea during power-on, the urea concentration in a preset time is pre-detected, and before the pre-detection is completed, the urea concentration abnormal fault diagnosis is frozen, so as to determine whether the urea concentration pre-detected for a period of time is qualified.

[0041] It should be noted that when the controller is powered on or the vehicle is refueled with urea during power-on, the urea concentration in a preset time is pre-detected, and before the pre-detection is completed, the urea concentration abnormal fault diagnosis is frozen, which can effectively prevent false cure of the fault, wherein it can be understood that false cure means that the urea concentration has a fault and is cured in the normal direction of urea.

[0042] In addition, the pre-processing (pre-detection) needs a certain time, and before the pre-detection is completed, it is not suitable to compare any value with a limit value to determine whether to report a fault, so the function is frozen to prevent false alarm or false cure.

[0043] In one embodiment, when the controller is powered on or after refueling urea during power-on, the urea concentration is pre-detected within 5s-10min, and the urea concentration abnormality fault diagnosis is frozen at the same time. If the concentration is qualified, the qualified concentration is locked for fault diagnosis.

[0044] In one embodiment, when the vehicle is refueled with urea, if the urea concentration is qualified within the pre-detection set time, the qualified concentration is locked for fault diagnosis.

[0045] It can be understood that when the controller is powered on or after refueling urea during power-on, if the urea concentration is qualified within 5s-10min of pre-detection, the qualified concentration is locked for fault diagnosis.

[0046] Step S102: If the pre-detected urea concentration is not qualified, continue to freeze the urea concentration abnormality fault diagnosis, and detect the urea concentration again after the vehicle mileage reaches the set value.

[0047] Specifically, when the controller is powered on or after refueling urea during power-on, the urea concentration is pre-detected within 5s-10min, and the urea concentration abnormality fault diagnosis is frozen at the same time. If the concentration is qualified, the qualified concentration is locked for fault diagnosis. If the pre-detected urea concentration is not qualified, continue to freeze the urea concentration abnormality fault diagnosis, and detect the urea concentration again after the vehicle mileage reaches the set value.

[0048] It can be understood that when the controller is powered on or after refueling urea during power-on, the urea concentration is pre-detected within a set time, and the urea concentration abnormality fault diagnosis is frozen before the pre-detection is completed, to determine whether the urea concentration is qualified. If the pre-detected urea concentration is not qualified, the vehicle mileage is accumulated, and after the vehicle mileage reaches the set value, the urea concentration is pre-detected again, and the urea concentration abnormality fault diagnosis is frozen to determine whether the urea concentration is qualified.

[0049] In one embodiment, when the vehicle mileage reaches the set value, and the detected urea concentration is not qualified, the urea concentration value collected by the urea concentration sensor in real time is used for fault diagnosis.

[0050] In one embodiment, when the controller is powered on or after refueling urea during power-on, if the pre-detected urea concentration within the set pre-detection time is not qualified, and the accumulated vehicle mileage has reached the set value, the urea concentration of the vehicle uses the pre-detection judgment value after the last accumulated mileage reaches.

[0051] It can be understood that if the pre-detected concentration is not qualified, and the accumulated mileage has not reached the set value, continue to accumulate the vehicle mileage, and freeze the urea concentration abnormality fault diagnosis at the same time. After the accumulated mileage reaches the set value, pre-detect whether the urea concentration is qualified, freeze the urea concentration abnormality fault diagnosis at the same time, and if qualified, lock the qualified concentration for fault diagnosis, and if not qualified, use the sensor value.

[0052] If the pre-detected concentration is unqualified, and the accumulated mileage has reached the set value, the concentration uses the pre-detection judgment value after the last accumulated mileage reaches.

[0053] It can be understood that if the pre-detected concentration is unqualified, and the accumulated mileage does not reach 10km-100km, continue to accumulate the vehicle running mileage, and freeze the urea concentration abnormal fault diagnosis. After the accumulated mileage reaches 10km-100km, whether the pre-detected urea concentration is qualified, and the urea concentration abnormal fault diagnosis is frozen. If qualified, the qualified concentration is locked for fault diagnosis, and if unqualified, the sensor value is used. It should be noted that the sensor value is the real-time collected urea concentration value.

[0054] If the pre-detected concentration is unqualified, and the accumulated mileage has reached 10km-100km, the concentration uses the pre-detection judgment value after the last accumulated mileage reaches.

[0055] Step S103: If the re-detected urea concentration is qualified, the qualified urea concentration is locked and fault diagnosis is performed.

[0056] Specifically, after the controller is powered on or during power-on, the urea concentration in the pre-detection set time is detected, and before the pre-detection is completed, the urea concentration abnormal fault diagnosis is frozen. If the pre-detected urea concentration is unqualified, the urea concentration abnormal fault diagnosis is continued to be frozen, and after the vehicle running mileage reaches the set value, the urea concentration is detected again. If the re-detected urea concentration is qualified, the qualified urea concentration is locked and fault diagnosis is performed.

[0057] It can be understood that after the controller is powered on or during power-on, the urea concentration is first pre-detected for a period of time. If qualified, the qualified urea concentration is locked for fault diagnosis. If unqualified, the running mileage is accumulated, and then a pre-detection is performed to determine whether it is qualified. It can be understood that through two detections, the urea concentration can be accurately detected, and the problem of false positives can be effectively avoided. It should be noted that false positives and false cures are two different concepts. False positives can be understood as normal urea concentration but reported as abnormal. False cure can be understood as abnormal urea concentration but treated as normal (reverse direction).

[0058] In one embodiment, when the controller is powered on and the liquid level is lower than before powering off by a set value, or the controller is powered on and the liquid level is filled with urea, the urea concentration is pre-detected for a period of time, and the urea concentration abnormal fault diagnosis is frozen, if the concentration is within the set qualified range, the qualified concentration value is locked for fault diagnosis. If the pre-detected concentration is unqualified, the vehicle running mileage is accumulated from zero, and the urea concentration abnormal fault diagnosis is frozen. After the accumulated mileage reaches the set value, the pre-detection of the urea concentration is performed to determine whether it is within the set qualified range, and the urea concentration abnormal fault diagnosis is frozen. If it is qualified, the qualified concentration value is locked for fault diagnosis. If it is unqualified, the sensor value is used.

[0059] In one embodiment, when the controller is powered on and the liquid level is not lower than before powering off, the urea concentration is pre-detected for a period of time, and the urea concentration abnormal fault diagnosis is frozen, if the concentration is within the set qualified range, the qualified concentration value is locked for fault diagnosis. If the pre-detected concentration is unqualified, and the accumulated mileage has reached the set value, the concentration uses the pre-detection judgment value after the last time the accumulated mileage reaches. If the pre-detected concentration is unqualified, and the accumulated mileage has not reached the set value, the vehicle running mileage is continuously accumulated, and the urea concentration abnormal fault diagnosis is frozen. After the accumulated mileage reaches the set value, the pre-detection of the urea concentration is performed to determine whether it is within the set qualified range, and the urea concentration abnormal fault diagnosis is frozen. If it is qualified, the qualified concentration value is locked for fault diagnosis. If it is unqualified, the sensor value is used.

[0060] It can be understood that after the controller of the present application is powered on or the urea is filled during power-on, the urea concentration is pre-detected for a period of time, and the urea concentration abnormal fault diagnosis is frozen, if the concentration is qualified, the qualified concentration is locked for fault diagnosis;

[0061] If the pre-detected concentration is unqualified, and the accumulated mileage has not reached the set value, the vehicle running mileage is continuously accumulated, and the urea concentration abnormal fault diagnosis is frozen. After the accumulated mileage reaches the set value, the pre-detection of the urea concentration is performed to determine whether it is qualified, and the urea concentration abnormal fault diagnosis is frozen. If it is qualified, the qualified concentration is locked for fault diagnosis. If it is unqualified, the sensor value is used.

[0062] If the pre-detected concentration is unqualified, and the accumulated mileage has reached the set value, the concentration uses the pre-detection judgment value after the last time the accumulated mileage reaches.

[0063] In one embodiment, when the controller is powered on and the liquid level is lower than before powering off, the vehicle running mileage is accumulated from zero.

[0064] It can be understood that the present application first performs pretreatment (pre-detection and accumulated mileage), determines whether to use the sensor actual measurement value or lock the qualified value, and then compares with the limit value to determine whether to report a fault.

[0065] During the urea concentration pre-detection period and when the cumulative mileage does not reach the set value, the urea concentration abnormality fault diagnosis is frozen, which can effectively avoid the urea concentration fault mishealing; after the controller is powered on, if the urea liquid level is lower than that before power-off, or after urea is added, if the pre-detected concentration is unqualified, the fault diagnosis is performed after the cumulative mileage reaches the set value, the bubbles generated during urea addition can be eliminated by using the vibration of vehicle operation, and the fault misreporting can be avoided; the urea concentration is pre-detected for a period of time, if the concentration is qualified, the qualified concentration is locked for fault diagnosis, if the concentration is unqualified and the cumulative mileage has reached the set value, the pre-detection judgment value after the last cumulative mileage reaches is used for fault diagnosis. The urea concentration changes from qualified to unqualified, and the misreporting caused by the bubbles generated by the vehicle bumping can be avoided through the scheme.

[0066] To sum up, the application discloses a method, device, equipment and storage medium for avoiding urea concentration abnormality misreporting, wherein the method comprises the following steps: when the controller is powered on or the vehicle is added with urea during power-on, pre-detecting the urea concentration within a set time, and freezing the urea concentration abnormality fault diagnosis before the pre-detection is completed; if the pre-detected urea concentration is unqualified, continuing to freeze the urea concentration abnormality fault diagnosis, and detecting the urea concentration again after the vehicle running mileage reaches a set value; and if the urea concentration detected again is qualified, locking the qualified urea concentration and performing fault diagnosis. The application can pre-process the urea concentration, and effectively avoid urea concentration abnormality fault misreporting.

[0067] Referring to Figure 2 , Figure 2 As shown in FIG. 1, the device provided by the application is a device for avoiding urea concentration abnormality misreporting, and as shown in FIG. 2, the device comprises: Figure 2

[0068] The detection module 201 is configured to pre-detect the urea concentration within a set time when the controller is powered on or the vehicle is added with urea during power-on, and freeze the urea concentration abnormality fault diagnosis before the pre-detection is completed.

[0069] The processing module 202 is configured to continue to freeze the urea concentration abnormality fault diagnosis if the pre-detected urea concentration is unqualified, and detect the urea concentration again after the vehicle running mileage reaches a set value.

[0070] The execution module 203 is configured to lock the qualified urea concentration and perform fault diagnosis if the urea concentration detected again is qualified. Further, in a possible implementation, the detection module is further configured to lock the qualified concentration to perform fault diagnosis when the pre-detected urea concentration within a set time is qualified when the controller is powered on or the vehicle is added with urea during power-on.

[0071] ​Further, in a possible implementation, the detection module is further configured to, when the vehicle mileage reaches a set value, perform fault diagnosis on the urea concentration based on the urea concentration value collected by the urea concentration sensor in real time when the urea concentration is unqualified.

[0072] Further, in a possible implementation, the electronic device further comprises a judgment module configured to, when the vehicle is refueled with urea, judge that the urea concentration is unqualified within a pre-detection set time, and the accumulated vehicle mileage reaches a set value, use the pre-detection judgment value after the last accumulated mileage reaches as the urea concentration of the vehicle.

[0073] Further, in a possible implementation, the processing module is further configured to, when the refueling of urea is detected, or the controller is powered on and the liquid level is lower than that before the controller is powered off, start to accumulate the vehicle mileage from zero.

[0074] Further, in a possible implementation, the electronic device further comprises a judgment module configured to, when the urea concentration exceeds a set range value, judge that the urea concentration is unqualified.

[0075] The set range value is 30% to 35%.

[0076] Further, in a possible implementation, the processing module is further configured to set the set time to 5s to 10min, and the set value to 10km to 100km.

[0077] The electronic device 300 according to this embodiment of the present application will be described below with reference to Figure 3 The electronic device 300 is merely an example and should not impose any limitation on the functions and application scope of the embodiments of the present application. Figure 3 The electronic device 300 is merely an example and should not impose any limitation on the functions and application scope of the embodiments of the present application.

[0078] As shown in Figure 3 The electronic device 300 is in the form of a general computing device. The components of the electronic device 300 can include but are not limited to the above-mentioned at least one processing unit 310, the above-mentioned at least one storage unit 320, and a bus 330 connecting different system components including the storage unit 320 and the processing unit 310.

[0079] The storage unit stores program codes which can be executed by the processing unit 310, so that the processing unit 310 performs the steps described in the above “Embodiment Method” section according to various exemplary embodiments of the present application.

[0080] The storage unit 320 can include a readable medium in the form of a volatile storage unit, such as a random access memory (RAM) 321 and / or a cache memory 322, and can further include a read-only memory (ROM) 323.

[0081] The storage unit 320 can also include a program / utility 324 having a set (at least one) of program modules 325, including but not limited to an operating system, one or more application programs, other program modules, and program data, each of which can include implementations of the network environment in its entirety or a combination of the examples.

[0082] The bus 330 can represent one or more of several types of bus structures, including a storage bus or bus controller, a peripheral bus, a graphics acceleration port, a processor or local bus using any of a variety of bus architectures.

[0083] The electronic device 300 can also communicate with one or more external devices such as a keyboard or pointing device, a Bluetooth device, etc., through the I / O interface 350. Additionally, the electronic device 300 can communicate with one or more devices that enable user interaction with the electronic device 300, and / or one or more devices that enable communication of the electronic device 300 with one or more other computing devices. Such communication can be facilitated by an I / O interface 350. The electronic device 300 can also communicate with one or more networks, such as a local area network (LAN), a wide area network (WAN), and / or the public network, such as the Internet, through a network adapter 360. As depicted, the network adapter 360 is in communication with the other components of the electronic device 300 through the bus 330. It should be appreciated that other hardware and / or software modules can be used in conjunction with the electronic device 300, including but not limited to microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data archival storage systems, etc.

[0084] Those skilled in the art will readily understand that the example embodiments described herein can be implemented by software and / or by software in combination with the necessary hardware. Thus, the technical solutions according to the embodiments of the present disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash disk, a mobile hard disk, etc.) or a network, and includes a number of instructions to enable a computing device (which can be a personal computer, a server, a terminal device, or a network device, etc.) to perform the methods according to the embodiments of the present disclosure.

[0085] According to the scheme of the present disclosure, a computer readable storage medium is also provided, on which a program product capable of implementing the above-mentioned method of the present specification is stored. In some possible implementation manners, various aspects of the present application can also be implemented in the form of a program product, which includes program codes for causing a terminal device to perform the steps according to various exemplary embodiments of the present application described in the above-mentioned “Exemplary Method” section of the present specification when the program product is run on the terminal device.

[0086] Reference Figure 4 As shown, a program product 400 for implementing the above-mentioned method according to the embodiments of the present application is described, which can adopt a portable compact disc read-only memory (CD-ROM) and include program codes, and can be run on a terminal device, such as a personal computer. However, the program product of the present application is not limited thereto, and in the present document, the readable storage medium can be any tangible medium containing or storing a program, which can be used or combined with an instruction execution system, device or apparatus.

[0087] The program product can adopt any combination of one or more readable media. The readable medium can be a readable signal medium or a readable storage medium. The readable storage medium may, for example, be but is not limited to an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or apparatus, or any combination thereof. More specific examples (non-exhaustive list) of the readable storage medium include an electrical connection having one or more wires, a portable disc, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0088] The computer readable signal medium can include a data signal propagated in a baseband or as a part of a carrier wave, in which readable program codes are borne. Such a propagated data signal can adopt various forms, including but not limited to an electromagnetic signal, an optical signal, or any suitable combination thereof. The readable signal medium can also be any readable medium other than the readable storage medium, which can send, propagate or transmit a program for use by or in connection with an instruction execution system, device or apparatus.

[0089] The program codes contained on the readable medium can be transmitted by any suitable medium, including but not limited to wireless, wired, optical cable, RF, etc., or any suitable combination thereof.

[0090] The program code may be implemented in any of various ways, including procedure-based, object-oriented approaches, Java, C++, C#, or a similar programming language. The program code can execute entirely on the user's computing device, partly on the user's computing device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device or entirely on the remote computing device or server. In the latter scenario, the remote computing device can be connected to the user's computing device through any type of network, including a local area network (LAN) or a wide area network (WAN), or the connection can be made to an external computing device, such as through the Internet using an Internet Service Provider.

[0091] Furthermore, the above-described diagrams are only schematic and are non-limiting. It is expressly contended that the processes depicted in the diagrams are not intended to imply or to be limiting of the timing of the processes. Also, it is expressly contended that the processes can be performed in a different order than as shown in the diagrams. Further, it is expressly contended that the processes can be performed simultaneously or in a different order than as shown in the diagrams.

[0092] In summary, the present application provides a method, device, equipment and storage medium for avoiding false alarm of abnormal urea concentration, wherein the method comprises the following steps: when the controller is powered on or the vehicle is refueled with urea during power-on, pre-detecting the urea concentration within a set time, and freezing the fault diagnosis of abnormal urea concentration before the pre-detection is completed; if the pre-detected urea concentration is unqualified, continuing to freeze the fault diagnosis of abnormal urea concentration, and detecting the urea concentration again after the vehicle running mileage reaches a set value; and if the re-detected urea concentration is qualified, locking the qualified urea concentration and performing fault diagnosis. The present application can pre-process the urea concentration, effectively avoiding false alarm of abnormal urea concentration fault.

[0093] The specific embodiments described hereinabove are shown by way of example, and could be practiced not only as described but also in other ways. It is therefore noted that departures can be made from the specifics set forth above without departing from the spirit and scope of the present application. Accordingly, the claims should be accorded with the broadest reasonable interpretation so as to encompass all such alternatives and modifications.

[0094] The computer program instructions can also be loaded onto a computer, other programmable data processing apparatus, or other processing device to cause a series of operational steps to be performed on the computer, other programmable apparatus or other processing device to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide processes for implementing the functions specified in the flowchart block or blocks. Figure 1 The flowchart and / or block diagram in the variation of the present application illustrate the architecture, functionality, and operation of possible implementations of apparatuses and methods according to the present application. In this regard, each block in the flowchart and / or block diagrams can represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical functions. It should also be noted that, in some alternative implementations, the functions noted in the flowchart and / or block diagram can occur out of the order noted in the figures. For example, two Figure 1 The computer program instructions can also be loaded onto a computer, other programmable data processing apparatus, or other processing device to cause a series of operational steps to be performed on the computer, other programmable apparatus or other processing device to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide processes for implementing the functions specified in the flowchart block or blocks.

Claims

1. A method of avoiding false positives of urea concentration anomalies, characterized by, The method comprises the following steps: After the controller is powered on or the vehicle is refueled with urea during power-on, the urea concentration in a preset detection time is detected, and the urea concentration abnormal fault diagnosis is frozen before the pre-detection is completed; If the pre-detected urea concentration is unqualified, the urea concentration abnormal fault diagnosis is continued to be frozen, and the urea concentration is detected again after the vehicle running mileage reaches a set value; When the vehicle running mileage reaches the set value and the detected urea concentration is unqualified, the urea concentration value collected by the urea concentration sensor in real time is used for fault diagnosis; When it is judged that the urea concentration in the preset detection time is unqualified and the accumulated vehicle running mileage has reached the set value, the urea concentration of the vehicle is determined by the pre-detection value after the last accumulated mileage reaches the set value; If the detected urea concentration is qualified, the qualified urea concentration is locked and the fault diagnosis is performed.

2. The method of claim 1, wherein, The method comprises the following steps: When the controller is powered on or the vehicle is refueled with urea during power-on, the urea concentration in a preset detection time is detected, and the urea concentration abnormal fault diagnosis is frozen before the pre-detection is completed.

3. The method of claim 1, wherein, Further comprising the following steps: When the refueling of urea is detected, or the controller is powered on and the liquid level is lower than that before power-off, the vehicle running mileage is accumulated from zero.

4. The method of claim 1, wherein: When the urea concentration exceeds a set range value, it is judged that the urea concentration is unqualified; The set range value is 30% to 35%.

5. The method of claim 1, wherein: The set time is 5s to 10min; and the set value is 10km to 100km.

6. An apparatus for avoiding false alarms of urea concentration abnormalities, characterized by The method comprises the following steps: A detection module is configured to detect the urea concentration in a preset detection time after the controller is powered on or the vehicle is refueled with urea during power-on, and freeze the urea concentration abnormal fault diagnosis before the pre-detection is completed; A processing module is configured to continue to freeze the urea concentration abnormal fault diagnosis if the pre-detected urea concentration is unqualified, and detect the urea concentration again after the vehicle running mileage reaches a set value; The detection module is further configured to use the urea concentration value collected by the urea concentration sensor in real time for fault diagnosis when the vehicle running mileage reaches the set value and the detected urea concentration is unqualified; A judgment module is configured to use the pre-detection value after the last accumulated mileage reaches the set value for the urea concentration of the vehicle when it is judged that the urea concentration in the preset detection time is unqualified and the accumulated vehicle running mileage has reached the set value; An execution module is configured to lock the qualified urea concentration and perform the fault diagnosis if the detected urea concentration is qualified.

7. An electronic device, comprising: The electronic device comprises: A processor; A memory having computer readable instructions stored thereon, wherein the computer readable instructions, when executed by the processor, implement the method of any one of claims 1 to 5.

8. A computer-readable storage medium, characterized in that, The computer program instructions stored therein, when executed by a computer, enable the computer to perform the method of any one of claims 1 to 5.

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