Conversion efficiency detection method, device, apparatus and storage medium

Abstract

The application provides a conversion efficiency detection method, device, equipment and storage medium, and belongs to the technical field of data processing. The method comprises the following steps: obtaining a plurality of sub-temperature intervals corresponding to a target selective catalytic reduction technology system, wherein the plurality of sub-temperature intervals are included in a preset working temperature interval of the target selective catalytic reduction technology system; calculating a sub-conversion efficiency corresponding to each of the plurality of sub-temperature intervals; and determining whether the target selective catalytic reduction technology system is faulty based on the plurality of sub-conversion efficiencies and a conversion efficiency fault threshold corresponding to each of the plurality of sub-temperature intervals. The application calculates the sub-conversion efficiency corresponding to each of the plurality of sub-temperature intervals respectively, thereby improving the calculation accuracy and improving the accuracy of the judgment in the process of determining the SCR system based on the sub-conversion efficiency.

Description

Technical Field

[0001] This application belongs to the field of data processing technology, specifically relating to a conversion efficiency detection method, apparatus, device, and storage medium. Background Technology

[0002] Selective Catalytic Reduction (SCR) is an after-treatment technology for nitrogen oxides in engine exhaust. It involves injecting ammonia or urea, a reducing agent, into the exhaust gas under the action of a catalyst to reduce the nitrogen oxides in the exhaust gas into nitrogen and water.

[0003] SCR technology is widely used in diesel engines and other combustion equipment to meet stringent emission regulations and has shown good results in reducing nitrogen oxide emissions.

[0004] Currently, the SCR system can be faulty by detecting its conversion efficiency of nitrogen oxides. However, when the operating temperature of the SCR system changes continuously, the current method for calculating the conversion efficiency of nitrogen oxides may lead to inaccurate calculation results, resulting in an inaccurate judgment of whether the SCR system is faulty. Summary of the Invention

[0005] This application proposes a conversion efficiency detection method, apparatus, device, and storage medium, which can solve the current technical problem of mainly creating multiple tables to display multi-dimensional or complex data.

[0006] The first aspect of this application proposes a method for detecting conversion efficiency, including:

[0007] Multiple sub-temperature ranges corresponding to the target selective catalytic reduction technology system are obtained, and the multiple sub-temperature ranges are included in the preset operating temperature range of the target selective catalytic reduction technology system;

[0008] Calculate the sub-conversion efficiency corresponding to each of the multiple sub-temperature ranges;

[0009] Whether the target selective catalytic reduction technology system is faulty is determined based on the multiple sub-conversion efficiencies and the corresponding conversion efficiency fault thresholds for each of the multiple sub-temperature ranges.

[0010] An embodiment of the second aspect of this application provides a conversion efficiency detection device, comprising:

[0011] The acquisition module is used to acquire multiple sub-temperature ranges corresponding to the target selective catalytic reduction technology system, wherein the multiple sub-temperature ranges are included in the preset operating temperature range of the target selective catalytic reduction technology system;

[0012] The calculation module is used to calculate the sub-conversion efficiency corresponding to each of the plurality of sub-temperature ranges;

[0013] The determination module is used to determine whether the target selective catalytic reduction technology system is faulty based on the multiple sub-conversion efficiencies and the conversion efficiency fault thresholds corresponding to the multiple sub-temperature ranges.

[0014] An embodiment of the third aspect of this application provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the method described in the first aspect above.

[0015] An embodiment of the fourth aspect of this application provides a computer-readable storage medium having a computer program stored thereon, the program being executed by a processor to implement the method described in the first aspect above.

[0016] The technical solutions provided in this application embodiment have at least the following technical effects or advantages:

[0017] This application obtains multiple sub-temperature ranges corresponding to the target selective catalytic reduction (SCR) system, which are included within the system's preset operating temperature range. It calculates the sub-conversion efficiency for each of these sub-temperature ranges and determines whether the SCR system is faulty based on these sub-conversion efficiencies and corresponding conversion efficiency fault thresholds for each sub-temperature range. By calculating the sub-conversion efficiencies for each of the multiple sub-temperature ranges, this application improves the accuracy of the calculations, thereby enhancing the accuracy of the judgment in determining the SCR system based on these sub-conversion efficiencies.

[0018] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0019] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings.

[0020] In the attached diagram:

[0021] Figure 1 A flowchart of a conversion efficiency detection method provided in an embodiment of this application is shown;

[0022] Figure 2A schematic diagram comparing the conversion efficiency of an SCR system provided in an embodiment of this application under normal and fault conditions is shown.

[0023] Figure 3 A flowchart of a conversion efficiency detection method provided in an embodiment of this application is shown;

[0024] Figure 4 This illustration shows a schematic diagram of a conversion efficiency detection device according to an embodiment of this application;

[0025] Figure 5 This illustration shows a schematic diagram of the structure of an electronic device according to an embodiment of this application;

[0026] Figure 6 A schematic diagram of a storage medium provided in one embodiment of this application is shown. Detailed Implementation

[0027] Exemplary embodiments of this application will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of this application and to fully convey the scope of this application to those skilled in the art.

[0028] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application pertains.

[0029] The relevant technologies mainly calculate the efficiency of SCR systems by using an integrator, provided that the enabling and environmental conditions of the SCR system are met.

[0030] The enabling conditions for calculating SCR conversion efficiency are as follows:

[0031] 1) Upstream NOx signal status;

[0032] 2) Downstream NOx signal status;

[0033] 3) Urea injection state;

[0034] 4) Environmental stress state;

[0035] 5) Ambient temperature conditions;

[0036] 6) NOx monitoring is currently disabled due to a system malfunction.

[0037] 7) NH3 storage level;

[0038] 8) Current hydrocarbon levels.

[0039] The environmental conditions for calculating SCR conversion efficiency are as follows:

[0040] 1) Exhaust temperature; 2) Exhaust flow rate; 3) Exhaust temperature variation gradient; 4) Exhaust flow rate variation gradient.

[0041] Figure 1 This is a diagram comparing the conversion efficiency of a certain SCR system under normal and fault conditions, such as... Figure 1 As shown, the SCR system exhibits a significant difference in conversion efficiency between normal conditions (200℃-250℃) and fault conditions. However, once the temperature reaches 250℃, the difference in conversion efficiency between normal and fault conditions becomes relatively small.

[0042] During the integrator's calculation process, assuming the conversion efficiency of an SCR system at 200℃ is being calculated, the integration calculation takes a long time, and the temperature continuously rises during the integration process. When the integration calculation is completed, the current system temperature is 250℃. The calculated conversion efficiency is either the conversion efficiency corresponding to a certain temperature between 200℃ and 250℃, or simply the conversion efficiency corresponding to 250℃. If the SCR system is in a fault state at this time, the calculated conversion efficiency at 200℃ is actually the conversion efficiency at 250℃, which is not much different from the conversion efficiency at 200℃ under normal conditions, making it impossible to detect the fault in the SCR system at this time.

[0043] To address the aforementioned problems, this application provides a conversion efficiency detection method, apparatus, device, and storage medium. The method includes: acquiring multiple sub-temperature ranges corresponding to a target selective catalytic reduction (SCR) system, wherein the multiple sub-temperature ranges are included within a preset operating temperature range of the target SCR system; calculating the sub-conversion efficiency corresponding to each of the multiple sub-temperature ranges; and determining whether the target SCR system is faulty based on the multiple sub-conversion efficiencies and the corresponding conversion efficiency fault thresholds for each of the multiple sub-temperature ranges. This application improves the calculation accuracy by separately calculating the sub-conversion efficiencies corresponding to each of the multiple sub-temperature ranges, thereby enhancing the accuracy of the judgment in determining the SCR system based on the sub-conversion efficiencies.

[0044] Regarding the implementing entity, each embodiment of this application uses an efficiency detection system in a vehicle as an example for explanation.

[0045] The following description, in conjunction with the accompanying drawings, describes a conversion efficiency detection method, apparatus, device, and storage medium according to embodiments of this application.

[0046] See Figure 2 The method specifically includes the following steps:

[0047] S201. Obtain multiple sub-temperature ranges corresponding to the target selective catalytic reduction technology system.

[0048] Multiple sub-temperature ranges are included within the preset operating temperature range of the target selective catalytic reduction technology system.

[0049] Before calculating the conversion efficiency of the target SCR system, the temperature range to be calculated is manually configured.

[0050] Generally, each SCR system has a preset operating temperature range, which is typically the optimal operating temperature range for the SCR system. For example, for diesel vehicles, SCR systems usually operate between 200°C and 450°C. Temperatures within this range ensure the highest catalyst activity, thus achieving optimal NOx conversion efficiency. For heavy-duty diesel vehicles, because they typically produce higher emissions, their SCR systems may require higher operating temperatures. Therefore, these systems may operate in a temperature range of 250°C to 550°C or higher. For gasoline vehicles, compared to diesel vehicles, gasoline vehicles typically produce less NOx emissions. Therefore, gasoline vehicle SCR systems may operate in a lower temperature range, typically between 150°C and 300°C.

[0051] In the process of dividing multiple sub-temperature ranges, the division can be based on the conversion efficiency of the target SCR system within a preset operating temperature range, assuming... Figure 1 This is a diagram comparing the conversion efficiency of the target SCR system under normal and fault conditions, such as... Figure 1 As shown, the preset operating temperature range is between 200°C and 400°C. However, the SCR system exhibits a significant difference in conversion efficiency between normal conditions (200°C-250°C) and fault conditions, while the efficiency difference is smaller between normal and fault conditions (250°C-400°C). Therefore, it is advisable to set as many sub-temperature ranges as possible within the 200°C-250°C range and fewer sub-temperature ranges within the 250°C-400°C range, for example, dividing it into 5 ranges.

[0052] Temperature range 1: 200℃ < SCR temperature ≤ 220℃;

[0053] Temperature range 2: 220℃ < SCR temperature ≤ 240℃;

[0054] Temperature range 3: 240℃ < SCR temperature ≤ 260℃;

[0055] Temperature range 4: 260℃ < SCR temperature ≤ 350℃;

[0056] Temperature range 5: SCR temperature above 350℃.

[0057] In some embodiments, to improve the detection efficiency of conversion efficiency, no corresponding sub-temperature range is set in the temperature range where the difference in conversion efficiency between normal and fault conditions is small. (Assuming...) Figure 1 This diagram illustrates the comparison of conversion efficiency of the target SCR system under normal and fault conditions. Therefore, multiple sub-temperature ranges can be set within the 200℃-250℃ range, for example, divided into three ranges:

[0058] Temperature range 1: 200℃ < SCR temperature ≤ 220℃;

[0059] Temperature range 2: 220℃ < SCR temperature ≤ 240℃;

[0060] Temperature range 3: 240℃ < SCR temperature ≤ 250℃.

[0061] The conversion efficiency of the SCR system under fault conditions or at different temperatures under normal conditions can be determined through laboratory testing and simulation calculations.

[0062] S202. Calculate the sub-conversion efficiency corresponding to each of the multiple sub-temperature ranges.

[0063] In some embodiments, each sub-temperature range is provided with a corresponding integrator. When the operating temperature is detected to be within the corresponding sub-temperature range, the corresponding integrator can be controlled to calculate the sub-conversion efficiency within that sub-temperature range.

[0064] S203. Determine whether the target selective catalytic reduction technology system is faulty based on multiple sub-conversion efficiencies and the corresponding conversion efficiency fault thresholds for multiple sub-temperature ranges.

[0065] The conversion efficiency fault threshold can be determined based on the conversion efficiency of the SCR system under different temperatures under fault conditions or normal conditions. For example, if the conversion efficiency of the SCR system at 200℃-220℃ is 0.5 under fault conditions and 0.9 under normal conditions, then the conversion efficiency fault threshold can be any value between 0.5 and 0.9, or any value between 0.5 and 0.7. The specific setting can be flexibly set based on the actual situation.

[0066] In some embodiments, determining whether the target selective catalytic reduction technology system is faulty is based on the conversion efficiency of each sub-conversion efficiency and the conversion efficiency thresholds corresponding to each of the multiple sub-temperature ranges, including:

[0067] If the number of sub-temperature ranges where the sub-conversion efficiency is at the conversion efficiency fault threshold is greater than the preset number threshold, then the target selective catalytic reduction technology system is determined to be faulty.

[0068] The sub-conversion efficiency of each sub-temperature range is compared with the corresponding conversion efficiency threshold, and it is determined which sub-temperature ranges have a sub-conversion efficiency lower than the corresponding conversion efficiency threshold.

[0069] In general, other factors may cause inaccurate sub-conversion efficiency, such as insufficient ammonia / urea concentration, insufficient oxygen concentration, catalyst aging or contamination, etc. Therefore, when a sub-conversion efficiency is lower than the corresponding conversion efficiency threshold, the sub-conversion efficiency of that temperature range can be measured multiple times. For example, if the sub-conversion efficiency is lower than the corresponding conversion efficiency threshold after three measurements, then it is determined that the sub-conversion efficiency of that temperature range is lower than the corresponding conversion efficiency threshold.

[0070] If the number of sub-temperature ranges with sub-conversion efficiencies lower than the corresponding conversion efficiency threshold is greater than a preset threshold, then the target SCR system is determined to be faulty.

[0071] This application provides a conversion efficiency detection method. In this embodiment, multiple sub-temperature ranges corresponding to the target selective catalytic reduction (SCR) system are obtained, and these sub-temperature ranges are included within a preset operating temperature range of the target SCR system. The sub-conversion efficiency corresponding to each of the multiple sub-temperature ranges is calculated. Based on the multiple sub-conversion efficiencies and the corresponding conversion efficiency fault thresholds for each of the multiple sub-temperature ranges, it is determined whether the target SCR system is faulty. This application improves the calculation accuracy by separately calculating the sub-conversion efficiencies corresponding to each of the multiple sub-temperature ranges, thereby improving the accuracy of the judgment in the process of determining the SCR system based on the sub-conversion efficiencies.

[0072] In some embodiments, the sub-conversion efficiency corresponding to each of the multiple sub-temperature ranges is calculated, including:

[0073] When the operating temperature is within the first target temperature range, the sub-conversion efficiency corresponding to the first target temperature range is calculated using the integrator corresponding to the first target temperature range; the first target temperature range is one of multiple sub-temperature ranges.

[0074] When the operating temperature of the target SCR system is within the preset operating temperature range, the operating temperature is detected, and the sub-temperature range in which the operating temperature is located is determined. The sub-conversion efficiency corresponding to the first target temperature range is calculated using the integrator corresponding to the sub-temperature range.

[0075] The conversion efficiency is calculated as follows: (∑Upstream NOx value - ∑Downstream NOx value) / ∑Upstream NOx value. The upstream and downstream NOx values ​​can be obtained using emission testing instruments, by installing NOx sensors, or through real-time monitoring.

[0076] In some embodiments, the sub-conversion efficiency corresponding to the first target temperature range is calculated using an integrator corresponding to the first target temperature range, including:

[0077] The conversion efficiency of the first target sub-temperature range in the current calculation process is calculated using the target integrator corresponding to the first target sub-temperature range.

[0078] Get the computation time corresponding to the current computation process;

[0079] If the calculation time is greater than or equal to the calculation time threshold corresponding to the first target sub-temperature range, the conversion efficiency in the current calculation process is determined as the sub-conversion efficiency corresponding to the first target sub-temperature range.

[0080] Each sub-temperature range has a corresponding integrator. That is, the first target sub-temperature range has a target integrator. When the operating temperature is within the first target sub-temperature range, the conversion efficiency of the first target sub-temperature range is calculated using the target integrator.

[0081] It should be noted that the target integrator can only operate within the first target sub-temperature range. When the operating temperature is not within the first target sub-temperature range, the target integrator will not operate.

[0082] When the operating temperature is within the first target sub-temperature range, the target integrator begins to perform integration calculations. Integration calculations require a certain calculation time, and the calculation time threshold may vary for different integrators. If the calculation time is less than the preset calculation time of the target integrator and the operating temperature is not within the first target sub-temperature range, the target integrator may not output the calculated value, or the output calculated value may be inaccurate.

[0083] Therefore, the calculation time corresponding to the current calculation process is determined. If the calculation time is greater than or equal to the calculation time threshold corresponding to the first target sub-temperature range, the conversion efficiency of the current calculation process is determined as the sub-conversion efficiency corresponding to the first target sub-temperature range.

[0084] In some embodiments, the method further includes:

[0085] If the calculation time is less than the calculation time threshold, and the operating temperature is again within the first target sub-temperature range, the conversion efficiency of the first target sub-temperature range in the current calculation process is calculated using the target integrator until the total calculation time of the target integrator is greater than or equal to the calculation time threshold.

[0086] If the total computation time of the target integrator is greater than or equal to the computation time threshold, the sub-conversion efficiency corresponding to the first target sub-temperature range is determined based on the multiple computation results of the target integrator.

[0087] If the target integrator outputs a calculation result even though the preset calculation time is not met, and if it is determined that the calculation time is less than the calculation time threshold, the corresponding calculation result is output. Then, it waits for the next running temperature to be in the first target sub-temperature range, and uses the target integrator to continue calculating the sub-conversion efficiency corresponding to the first target sub-temperature range, and outputs the corresponding calculation result. If the current calculation time is still less than the previous calculation time threshold, it continues to wait for the next running temperature to be in the first target sub-temperature range, until the cumulative calculation time of the target integrator reaches the calculation time threshold.

[0088] If the total computation time of the target integrator is greater than or equal to the computation time threshold, the sub-conversion efficiency corresponding to the first target sub-temperature range is determined based on the multiple computation results of the target integrator.

[0089] In some embodiments, the sub-conversion efficiency corresponding to the first target sub-temperature range is determined based on multiple calculations of the target integrator, including:

[0090] The sub-conversion efficiency corresponding to the first target sub-temperature range is determined by averaging the results of multiple calculations of the target integrator.

[0091] If the target integrator does not output the calculation result if the preset calculation time is not met, and only the calculation value is saved, if it is determined that the calculation time is less than the calculation time threshold, it waits for the next running temperature to be in the first target sub-temperature range, and uses the target integrator to continue to calculate the sub-conversion efficiency corresponding to the first target sub-temperature range. If the calculation time of this time is still less than the calculation time threshold compared with the previous calculation time, it continues to wait for the next running temperature to be in the first target sub-temperature range, until the cumulative calculation time of the target integrator reaches the calculation time threshold.

[0092] During the final integration process of the target integrator, when the cumulative calculation time of the target integrator reaches the calculation time threshold, the target integrator outputs the calculation result, which can be determined as the sub-conversion efficiency of the first target sub-temperature range.

[0093] In some embodiments, the method further includes:

[0094] If the operating temperature is not detected to be in at least one second target sub-temperature range after a preset time period, the operating temperature is controlled to reach at least one second target sub-temperature range, and the multiple sub-temperature ranges include at least one second target sub-temperature range.

[0095] The integrators corresponding to at least one second target sub-temperature range calculate the conversion efficiency of at least one second target sub-temperature range in the current calculation process.

[0096] The preset time can be flexibly set based on the actual situation, which will not be elaborated here.

[0097] It is understandable that during the actual testing of conversion efficiency, the operating temperature may not completely cover the preset operating temperature range. That is, the sub-conversion efficiency of some temperature ranges within the preset operating temperature range may not be detected, leading to inaccurate results in determining whether the target SCR system is faulty. Therefore, in this case, the operating temperature of the target SCR can be changed by external means so that it can operate within the corresponding temperature range.

[0098] This can involve adjusting engine operating parameters or the operating mode of the emission system to ensure that the target SCR system can operate within the corresponding temperature range. This may involve adjusting the fuel injection quantity, increasing the exhaust gas recirculation rate, and changing the flow path of the exhaust gases.

[0099] Therefore, after a preset time period, if the operating temperature is not detected to be in at least one second target sub-temperature range, the operating temperature is controlled to reach at least one second target sub-temperature range, wherein at least one second target sub-temperature range is a temperature range in which the operating temperature has not been reached during the preset time period.

[0100] After detecting that the temperature has reached at least one of the temperature ranges in the second target sub-temperature range, the sub-conversion efficiency corresponding to that temperature range is calculated using the corresponding integrator.

[0101] To explain the conversion efficiency testing method described above in detail... Figure 3 A flowchart illustrating a conversion efficiency testing method is provided, as follows: Figure 3 As shown, the method includes:

[0102] When the operating temperature is within the preset operating temperature range, execute S301 to detect the target sub-temperature range corresponding to the operating temperature;

[0103] S302. Calculate the corresponding conversion efficiency using the integrator corresponding to the target sub-temperature range;

[0104] S303. Determine whether the computation time of the integrator is greater than or equal to the computation time threshold of the integrator.

[0105] If the computation time of the integrator is greater than or equal to the computation time threshold of the integrator, execute S304 and determine the computation result output by the integrator as the conversion efficiency corresponding to the target sub-temperature range;

[0106] S305. Determine whether the conversion efficiency is greater than or equal to the conversion efficiency threshold corresponding to the target sub-temperature range;

[0107] S306. If the number of sub-temperature ranges with sub-conversion efficiencies lower than the corresponding conversion efficiency threshold is greater than the preset number threshold, then the target SCR system is determined to be faulty.

[0108] If the integrator's calculation time is greater than or equal to the integrator's calculation time threshold, execute S307 and store the calculation result output by the integrator. If the operating temperature is again within the target sub-temperature range, use the integrator to calculate the conversion efficiency of the target sub-temperature range in the current calculation process until the total calculation time of the integrator is greater than or equal to the calculation time threshold.

[0109] S308. When the total computation time of the integrator is greater than or equal to the computation time threshold, the sub-conversion efficiency corresponding to the target sub-temperature range is determined based on the results of multiple calculations by the integrator.

[0110] This application also provides a conversion efficiency detection device, which is used to perform the conversion efficiency detection method provided in any of the above embodiments. Figure 4 As shown, the device includes: an acquisition module 401, a calculation module 402, and a determination module 403.

[0111] The acquisition module 401 is used to acquire multiple sub-temperature ranges corresponding to the target selective catalytic reduction technology system, wherein the multiple sub-temperature ranges are included in the preset operating temperature range of the target selective catalytic reduction technology system;

[0112] Calculation module 402 is used to calculate the sub-conversion efficiency corresponding to each of the plurality of sub-temperature ranges;

[0113] The determination module 403 is used to determine whether the target selective catalytic reduction technology system is faulty based on the multiple sub-conversion efficiencies and the conversion efficiency fault thresholds corresponding to the multiple sub-temperature ranges.

[0114] This application provides a conversion efficiency detection device. In this embodiment, multiple sub-temperature ranges corresponding to a target selective catalytic reduction (SCR) system are obtained, and these sub-temperature ranges are included within a preset operating temperature range of the target SCR system. The sub-conversion efficiency corresponding to each of the multiple sub-temperature ranges is calculated. Based on the multiple sub-conversion efficiencies and the corresponding conversion efficiency fault thresholds for each of the multiple sub-temperature ranges, it is determined whether the target SCR system is faulty. This application improves the calculation accuracy by separately calculating the sub-conversion efficiencies corresponding to each of the multiple sub-temperature ranges, thereby improving the accuracy of the judgment in the process of determining the SCR system based on the sub-conversion efficiencies.

[0115] In some embodiments, the calculation module 402 is specifically used for:

[0116] When the operating temperature is within the first target temperature range, the sub-conversion efficiency corresponding to the first target temperature range is calculated using the integrator corresponding to the first target temperature range; the first target temperature range is one of the plurality of sub-temperature ranges.

[0117] In some embodiments, the calculation module 402 is further specifically used for:

[0118] The conversion efficiency of the first target sub-temperature range in the current calculation process is calculated using the target integrator corresponding to the first target sub-temperature range.

[0119] Obtain the computation time corresponding to the current computation process;

[0120] If the calculation time is greater than or equal to the calculation time threshold corresponding to the first target sub-temperature range, the conversion efficiency in the current calculation process is determined as the sub-conversion efficiency corresponding to the first target sub-temperature range.

[0121] In some embodiments, the calculation module 402 is further specifically used for:

[0122] If the calculation time is less than the calculation time threshold, and if the operating temperature is again within the first target sub-temperature range, the conversion efficiency of the target sub-temperature range in the current calculation process is calculated using the target integrator until the total calculation time of the target integrator is greater than or equal to the calculation time threshold.

[0123] If the total computation time of the target integrator is greater than or equal to the computation time threshold, the sub-conversion efficiency corresponding to the first target sub-temperature range is determined based on the multiple computation results of the target integrator.

[0124] In some embodiments, the calculation module 402 is further specifically used for:

[0125] The sub-conversion efficiency corresponding to the target sub-temperature range is determined by averaging the results of multiple calculations of the target integrator.

[0126] In some embodiments, the calculation module 402 is further specifically used for:

[0127] If the operating temperature is not detected to be in at least one second target sub-temperature range after a preset time period, the operating temperature is controlled to reach the at least one second target sub-temperature range, wherein the plurality of sub-temperature ranges include the at least one second target sub-temperature range;

[0128] The integrators corresponding to the at least one second target sub-temperature range calculate the conversion efficiency of the at least one second target sub-temperature range in the current calculation process.

[0129] In some embodiments, the determining module 403 is specifically used for:

[0130] If the number of sub-temperature ranges where the sub-conversion efficiency is at the conversion efficiency fault threshold is greater than a preset threshold, then the target selective catalytic reduction technology system is determined to be faulty.

[0131] This application also provides an electronic device for performing the above-described conversion efficiency detection method. Please refer to... Figure 5 It illustrates a schematic diagram of an electronic device provided by some embodiments of this application. For example... Figure 5 As shown, the electronic device 5 includes: a processor 500, a memory 501, a bus 502 and a communication interface 503. The processor 500, the communication interface 503 and the memory 501 are connected through the bus 502. The memory 501 stores a computer program that can run on the processor 500. When the processor 500 runs the computer program, it executes the conversion efficiency detection method provided in any of the foregoing embodiments of this application.

[0132] The memory 501 may include high-speed random access memory (RAM) or non-volatile memory, such as at least one disk storage device. Communication between this device network element and at least one other network element is achieved through at least one communication interface 503 (which can be wired or wireless), such as the Internet, wide area network, local area network, metropolitan area network, etc.

[0133] Bus 502 can be an ISA bus, PCI bus, or EISA bus, etc. Buses can be divided into address buses, data buses, control buses, etc. Memory 501 is used to store programs. After receiving execution instructions, processor 500 executes the program. The conversion efficiency detection method disclosed in any of the aforementioned embodiments of this application can be applied to processor 500, or implemented by processor 500.

[0134] The processor 500 may be an integrated circuit chip with signal processing capabilities. In implementation, each step of the above method can be completed by the integrated logic circuitry in the hardware of the processor 500 or by instructions in software form. The processor 500 may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it may also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this application can be directly embodied in the execution of a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules may reside in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. The storage medium is located in memory 501. The processor 500 reads the information in memory 501 and, in conjunction with its hardware, completes the steps of the above method.

[0135] The electronic device provided in this application embodiment and the conversion efficiency detection method provided in this application embodiment are based on the same inventive concept and have the same beneficial effects as the methods they adopt, operate or implement.

[0136] This application also provides a computer-readable storage medium corresponding to the conversion efficiency detection method provided in the foregoing embodiments. Please refer to... Figure 6 The computer-readable storage medium shown is an optical disc 60, on which a computer program (i.e., a program product) is stored. When the computer program is run by a processor, it executes the conversion efficiency detection method provided in any of the aforementioned embodiments.

[0137] It should be noted that examples of computer-readable storage media may also include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other optical and magnetic storage media, which will not be elaborated here.

[0138] The computer-readable storage medium provided in the above embodiments of this application and the conversion efficiency detection method provided in the embodiments of this application are based on the same inventive concept and have the same beneficial effects as the methods adopted, run or implemented by the applications stored therein.

[0139] It should be noted that:

[0140] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of this application may be practiced without these specific details. In some instances, well-known structures and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0141] Similarly, it should be understood that, for the sake of brevity and to aid in understanding one or more of the various inventive aspects, in the above description of exemplary embodiments of this application, various features of this application are sometimes grouped together in a single embodiment, figure, or description thereof. However, this disclosure should not be construed as reflecting a schematic diagram in which the claimed application requires more features than expressly recited in each claim. Rather, as reflected in the following claims, inventive aspects lie in fewer than all features of a single foregoing disclosed embodiment. Therefore, the claims following the detailed description are hereby expressly incorporated into that detailed description, wherein each claim itself is a separate embodiment of this application.

[0142] Furthermore, those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this application and form different embodiments. For example, in the following claims, any of the claimed embodiments can be used in any combination.

[0143] The above are merely preferred embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for detecting SCR conversion efficiency, characterized in that, include: Multiple sub-temperature ranges corresponding to the target SCR system are obtained. These multiple sub-temperature ranges are included within the preset operating temperature range of the target SCR system. Each sub-temperature range includes multiple first sub-temperature ranges and multiple second sub-temperature ranges. The number of first sub-temperature ranges is greater than the number of second sub-temperature ranges, or the multiple sub-temperature ranges may only include multiple first sub-temperature ranges. The multiple first sub-temperature ranges are temperature ranges where the difference in conversion efficiency between the target SCR system under normal and fault conditions is greater than the difference in conversion efficiency between the target SCR system under normal and fault conditions within the multiple second sub-temperature ranges. The preset operating temperature range is the optimal operating temperature range corresponding to the target SCR system. If, after a preset time period, the operating temperature of the target SCR system is not detected to be within at least one second target sub-temperature range, the operating temperature is controlled to reach the at least one second target sub-temperature range. The multiple sub-temperature ranges include the at least one second target sub-temperature range, which is the temperature range where the operating temperature has not been reached within the preset time period. Calculate the sub-conversion efficiency corresponding to each of the multiple sub-temperature ranges; Determining whether the target SCR system is faulty based on multiple sub-conversion efficiencies and the corresponding conversion efficiency fault thresholds for each of the multiple sub-temperature ranges includes: if the number of sub-conversion efficiencies lower than the corresponding conversion efficiency fault threshold for the sub-temperature range is greater than a preset number threshold, then the target SCR system is determined to be faulty.

2. The method according to claim 1, characterized in that, The calculation of the sub-conversion efficiency corresponding to each of the plurality of sub-temperature ranges includes: When the operating temperature is within the first target temperature range, the sub-conversion efficiency corresponding to the first target temperature range is calculated using the integrator corresponding to the first target temperature range; the first target temperature range is one of the plurality of sub-temperature ranges.

3. The method according to claim 2, characterized in that, The step of calculating the sub-conversion efficiency corresponding to the first target temperature range using the integrator corresponding to the first target temperature range includes: The conversion efficiency of the first target sub-temperature range in the current calculation process is calculated using the target integrator corresponding to the first target sub-temperature range. Obtain the computation time corresponding to the current computation process; If the calculation time is greater than or equal to the calculation time threshold corresponding to the first target sub-temperature range, the conversion efficiency in the current calculation process is determined as the sub-conversion efficiency corresponding to the first target sub-temperature range.

4. The method according to claim 3, characterized in that, The method further includes: If the calculation time is less than the calculation time threshold, and if the operating temperature is again within the first target sub-temperature range, the conversion efficiency of the first target sub-temperature range in the current calculation process is calculated using the target integrator until the total calculation time of the target integrator is greater than or equal to the calculation time threshold. If the total computation time of the target integrator is greater than or equal to the computation time threshold, the sub-conversion efficiency corresponding to the first target sub-temperature range is determined based on the multiple computation results of the target integrator.

5. The method according to claim 4, characterized in that, The determination of the sub-conversion efficiency corresponding to the first target sub-temperature range based on the multiple calculation results of the target integrator includes: The sub-conversion efficiency corresponding to the first target sub-temperature range is determined by averaging the results of multiple calculations of the target integrator.

6. The method according to claim 3, characterized in that, The method further includes: The conversion efficiency of the at least one second target sub-temperature range in the current calculation process is calculated using the integrators corresponding to the at least one second target sub-temperature range.

7. An SCR conversion efficiency detection device for performing the method according to any one of claims 1-6, characterized in that, include: An acquisition module is used to acquire multiple sub-temperature ranges corresponding to a target SCR system. These multiple sub-temperature ranges are included within a preset operating temperature range of the target SCR system. Each sub-temperature range includes multiple first sub-temperature ranges and multiple second sub-temperature ranges. The number of first sub-temperature ranges is greater than the number of second sub-temperature ranges, or the multiple sub-temperature ranges may only include multiple first sub-temperature ranges. The multiple first sub-temperature ranges are temperature ranges where the difference in conversion efficiency between the target SCR system under normal and fault conditions is greater than the difference in conversion efficiency between the target SCR system under normal and fault conditions within the multiple second sub-temperature ranges. The preset operating temperature range is the optimal operating temperature range corresponding to the target SCR system. If, after a preset time period, the operating temperature of the target SCR system is not detected to be within at least one second target sub-temperature range, the operating temperature is controlled to reach the at least one second target sub-temperature range. The multiple sub-temperature ranges include the at least one second target sub-temperature range, which is a temperature range where the operating temperature has not been reached within the preset time period. The calculation module is used to calculate the sub-conversion efficiency corresponding to each of the multiple sub-temperature ranges; The determination module is used to determine whether the target SCR system is faulty based on the multiple sub-conversion efficiencies and the conversion efficiency fault thresholds corresponding to the multiple sub-temperature ranges.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, The processor executes the computer program to implement the method as described in any one of claims 1-6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, The program is executed by a processor to implement the method as described in any one of claims 1-6.

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