CN115329602A - Validity judgment method and device based on automobile RDE simulation system - Google Patents
Validity judgment method and device based on automobile RDE simulation system Download PDFInfo
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Abstract
The application provides an effectiveness judgment method and device based on an automobile RDE simulation system, relates to the technical field of simulation systems, and solves the technical problem that the reliability of an RDE test result is difficult to determine. The method comprises the following steps: collecting environmental conditions, road spectrums and vehicle emission data of a target vehicle on an actual road; performing RDE emission analysis based on the environmental conditions, the road spectrum and the vehicle emission data to obtain an actual road RDE emission test result; testing the target vehicle through the automobile RDE simulation system based on the environmental condition, the road spectrum and the vehicle emission data to obtain a simulated RDE emission test result; and comparing the difference between the actual road RDE emission test result and the simulated RDE emission test result to obtain a difference result, and carrying out effectiveness analysis based on the difference result to obtain the effectiveness of the simulated RDE emission test result.
Description
Technical Field
The application relates to the technical field of simulation systems, in particular to an effectiveness judgment method and device based on an automobile RDE simulation system.
Background
Currently, a Real Drive Emission (RDE) test refers to pollutant Emission when a vehicle runs on an actual road, and is used for monitoring an Emission level of the vehicle in an actual running process.
The traditional emission test is generally carried out in a laboratory, and a fixed vehicle speed curve is followed in the general test. The RDE test is performed on an external environment road, the vehicle is driven according to actual road conditions, the environment temperature, the wind resistance, the road surface gradient and the like are uncontrollable, and the traffic road conditions are complex during road test driving, so that the RDE test has great influence on the test.
Therefore, the RDE test is completely different from the traditional emission test, the influence factor is more, and the reliability of the current RDE test result is difficult to determine.
Disclosure of Invention
The invention aims to provide an effectiveness judgment method and an effectiveness judgment device based on an automobile RDE simulation system, which are used for solving the technical problem that the reliability of an RDE test result is difficult to determine.
In a first aspect, an embodiment of the present application provides an effectiveness determination method based on an automobile RDE simulation system, where the method includes:
collecting environmental conditions, road spectrums and vehicle emission data of a target vehicle on an actual road;
performing RDE emission analysis based on the environmental conditions, the road spectrum and the vehicle emission data to obtain an actual road RDE emission test result;
testing the target vehicle through the automobile RDE simulation system based on the environmental condition, the road spectrum and the vehicle emission data to obtain a simulated RDE emission test result;
and comparing the difference between the actual road RDE emission test result and the simulated RDE emission test result to obtain a difference result, and carrying out effectiveness analysis based on the difference result to obtain the effectiveness of the simulated RDE emission test result.
In one possible implementation, a fixed emission analyzer and an on-board exhaust emission analyzer in the automobile RDE simulation system are connected in series through an exhaust pipe;
comparing the difference between the actual road RDE emission test result and the simulated RDE emission test result to obtain a difference result, wherein the difference result comprises:
performing consistency judgment on actual engine parameters of the target vehicle on an actual road and simulated engine parameters of the target vehicle in the automobile RDE simulation system by comparison to obtain a first judgment result;
performing consistency judgment on the simulated emission results of the fixed emission analyzer and the vehicle-mounted tail gas emission analyzer in the simulated RDE emission test result and the actual emission result of the vehicle-mounted tail gas emission analyzer in the actual road emission test result by comparison to obtain a second judgment result;
determining a difference result between the actual road RDE emission test result and the simulated RDE emission test result based on the first determination result and the second determination result.
In one possible implementation, the performing an effectiveness analysis based on the difference result to obtain the effectiveness of the simulated RDE emission test result includes:
and if the consistency degrees in the first judgment result and the second judgment result are both greater than a preset consistency degree, determining that the validity of the simulated RDE emission test result reaches a preset validity standard.
In one possible implementation, the actual engine parameters include an actual engine speed and an actual engine load; the simulated engine parameters comprise a simulated engine speed and a simulated engine load; if the consistency degree of the first judgment result and the second judgment result is greater than a preset consistency degree, determining that the validity of the simulated RDE emission test result reaches a preset validity standard, including:
determining that the validity of the simulated RDE emission test result meets a first preset validity standard if the relative deviation between the actual engine speed and the simulated engine speed is less than a first preset deviation threshold;
and if the relative deviation between the actual engine load and the simulated engine load is smaller than a second preset deviation threshold value, determining that the validity of the simulated RDE emission test result reaches a second preset validity standard.
In one possible implementation, the simulated RDE emission test results include simulated PEMS emission results, and the actual emission test results include actual PEMS emission results; if the consistency degrees in the first judgment result and the second judgment result are both greater than a preset consistency degree, determining that the validity of the simulated RDE emission test result reaches a preset validity standard, including:
determining that the validity of the simulated RDE emissions test result meets a third predetermined validity criterion if the relative deviation between the actual PEMS emissions result and the simulated PEMS emissions result is less than a third predetermined deviation threshold.
In one possible implementation, the determining that the validity of the simulated RDE emission test result meets a preset validity criterion if the degree of consistency in the first determination result and the second determination result is greater than a preset consistency degree further includes:
and if the validity of the simulated RDE emission test result reaches a first preset validity standard, a second preset validity standard and a third preset validity standard, determining that the validity of the simulated RDE emission test result reaches a final preset validity standard.
In one possible implementation, before the collecting the environmental condition, road spectrum and vehicle emission data of the target vehicle on the actual road, the method further comprises:
verifying the equipment state of the emission simulation equipment in the automobile RDE simulation system to obtain a verification result, and judging whether the equipment state of the emission simulation equipment is stable or not according to the verification result;
and if the equipment state is stable, acquiring the environmental condition, road spectrum and vehicle emission data of the target vehicle on the actual road.
In a second aspect, an effectiveness determination device based on an automobile RDE simulation system is provided, which includes:
the acquisition module is used for acquiring the environmental conditions, road spectrums and vehicle emission data of the target vehicle on the actual road;
the analysis module is used for carrying out RDE emission analysis based on the environmental conditions, the road spectrum and the vehicle emission data to obtain an actual road RDE emission test result;
the test module is used for testing the target vehicle through the automobile RDE simulation system based on the environmental condition, the road spectrum and the vehicle emission data to obtain a simulated RDE emission test result;
and the comparison module is used for comparing the difference between the actual road RDE emission test result and the simulated RDE emission test result to obtain a difference result, and carrying out effectiveness analysis based on the difference result to obtain the effectiveness of the simulated RDE emission test result.
In one possible implementation, the apparatus further comprises: the verification module is used for verifying the equipment state of the simulated emission equipment in the automobile RDE simulation system before acquiring the environmental conditions, the road spectrum and the vehicle emission data of the target vehicle on the actual road to obtain a verification result, and judging whether the equipment state of the simulated emission equipment is stable or not according to the verification result; and if the equipment state is stable, acquiring the environmental condition, road spectrum and vehicle emission data of the target vehicle on the actual road.
In a third aspect, an embodiment of the present application further provides an electronic device, which includes a memory and a processor, where the memory stores a computer program that is executable on the processor, and the processor implements the method of the first aspect when executing the computer program.
In a fourth aspect, this embodiment of the present application further provides a computer-readable storage medium storing computer-executable instructions, which, when invoked and executed by a processor, cause the processor to perform the method of the first aspect.
The embodiment of the application brings the following beneficial effects:
according to the effectiveness judgment method and device based on the automobile RDE simulation system, the environmental condition, the road spectrum and the vehicle emission data of a target vehicle on an actual road can be collected, RDE emission analysis is carried out based on the environmental condition, the road spectrum and the vehicle emission data to obtain an actual road RDE emission test result, the target vehicle is tested through the automobile RDE simulation system based on the environmental condition, the road spectrum and the vehicle emission data to obtain a simulated RDE emission test result, finally, the difference between the actual road RDE emission test result and the simulated RDE emission test result is compared to obtain a difference result, effectiveness analysis is carried out based on the difference result to obtain the effectiveness of the simulated RDE emission test result, and the accuracy and the reliability of the RDE simulation result data have a self judgment function through judgment of the effectiveness of the RDE simulation test result.
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the detailed description of the present application or the technical solutions in the prior art, the drawings used in the detailed description or the prior art description will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic flowchart of an effectiveness determination method based on an automobile RDE simulation system according to an embodiment of the present application;
FIG. 2 is another schematic flow chart of an effectiveness determination method based on an automobile RDE simulation system according to an embodiment of the present application;
FIG. 3 is another schematic flow chart of an effectiveness determination method based on an automobile RDE simulation system according to an embodiment of the present application;
FIG. 4 shows an example of engine speed in the method for determining validity based on an automobile RDE simulation system according to the embodiment of the present application;
FIG. 5 is a diagram illustrating an example of engine load in an effectiveness determination method based on an automobile RDE simulation system according to an embodiment of the present application;
fig. 6 is a diagram illustrating an example of pollutant emissions during an actual road emission test and an indoor RDE recurrence test in the effectiveness determination method based on the automobile RDE simulation system according to the embodiment of the present application;
fig. 7 is a diagram illustrating an example of PN emissions during an actual road emission test and an indoor RDE recurrence test in the validity determination method based on the automobile RDE simulation system according to the embodiment of the present application;
fig. 8 is a schematic structural diagram of an effectiveness determination apparatus based on an automobile RDE simulation system according to an embodiment of the present application;
fig. 9 shows a schematic structural diagram of an electronic device provided in an embodiment of the present application.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "comprising" and "having," and any variations thereof, as referred to in the embodiments of the present application, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements but may alternatively include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
At present, most of simple simulation systems only focus on the repeatability of the simulation result of the RDE test in a test room, but ignore the correlation between the RDE simulation test result and the actual road test result, namely judge the validity of the RDE simulation test result, and possibly cause misleading when effective and accurate calibration of the RDE test is carried out on an automobile manufacturer. The defects can be effectively solved by the actual road environment, the road spectrum acquisition and vehicle emission data testing system and the RDE simulation test effectiveness judging system.
Based on this, the embodiment of the application provides an effectiveness judgment method and an effectiveness judgment device based on an automobile RDE simulation system, and the method can be used for relieving the technical problem that the reliability of the RDE test result is difficult to determine, so as to overcome the defect that the difference between the simulation test result and the actual road emission test result is large due to judgment on the effectiveness of the simulation test result and the like in the prior art.
Embodiments of the present invention are further described below with reference to the accompanying drawings.
Fig. 1 is a schematic flow chart of an effectiveness determination method based on an automobile RDE simulation system according to an embodiment of the present application. As shown in fig. 1, the method includes:
step S110, collecting environmental conditions, road spectrums and vehicle emission data of the target vehicle on an actual road.
For example, as shown in fig. 2, an on-board environmental condition collection unit is used to collect and test environmental conditions of vehicles, road spectrum data, vehicle ECUs and emission data on an actual road, for example, to collect and record environmental data on the actual road in real time.
It should be noted that, the acquisition of the vehicle environmental condition and the road spectrum data may provide data accumulation for establishing an RDE environmental condition and a road spectrum database, and perform early-stage data acquisition for importing the environmental and road spectrum data during the RDE simulation test. The collection and test of vehicle ECU data and emission data can provide working condition state data and emission data of the actual road vehicle for the validity determination process of the RDE simulation test result.
As a possible implementation manner, as shown in fig. 2, after the target vehicle model is subjected to the collection and test of the actual road environment condition, road spectrum and emission test data, the collected and test recorded data may be analyzed and processed, i.e., the operation of step 3 in fig. 2 is performed.
And step S120, performing RDE emission analysis based on the environmental conditions, the road spectrum and the vehicle emission data to obtain an actual road RDE emission test result.
In the step, the analyzed actual road RDE emission test result can provide a comparison material for the effectiveness judgment process of the subsequent simulated emission test result.
And S130, testing the target vehicle through the automobile RDE simulation system based on the environmental conditions, the road spectrum and the vehicle emission data to obtain a simulated RDE emission test result.
In this step, as shown in fig. 2, the construction of the real road reproduction system in the test room and the introduction of the real road processing data into the reproduction system are performed to perform the real road reproduction test. The invention builds the RDE simulation system which can truly, efficiently and accurately reproduce road environmental conditions and road spectrums, and then conducts accurate simulation test on the RDE road test by importing the processed collected data into each control unit in the simulation system.
As a possible implementation manner, as shown in fig. 2, after the actual road data analysis and processing of step 3 are performed, step 4 may be performed to set up an actual road reproduction system in the test room and import the actual road processing data into the reproduction system to perform an actual road reproduction test.
And step S140, comparing the difference between the actual road RDE emission test result and the simulated RDE emission test result to obtain a difference result, and carrying out effectiveness analysis based on the difference result to obtain the effectiveness of the simulated RDE emission test result.
In practical applications, as shown in fig. 2, after the building of the laboratory road recurrence system, the data importing, and the simulation test of step 4 are performed, the validity of the laboratory road recurrence test result may be determined, that is, the validity determination of the RDE simulation test result of step 5 may be performed.
For example, as shown in fig. 2, after the laboratory RDE simulation test is performed, the validity of the RDE simulation test result can be determined by the present invention, that is, a result threshold of the rationality determination is given, which provides reliable test data for subsequent vehicle RDE calibration development and research work of vehicle manufacturers and related research institutions.
According to the invention, from the judgment of the test effectiveness of the test equipment, the collection and processing of the actual road environment, road spectrum data, the vehicle ECU and the emission data, the establishment of a RDE simulation test system in a laboratory, the introduction of the processed RDE road collection data and the final judgment of the effectiveness of the RDE simulation test result, a complete RDE laboratory simulation test closed loop system is formed, as shown in figure 3, compared with the prior art, the invention can efficiently, truly and accurately reproduce the emission test of the vehicle on the actual road in the laboratory, the reproduction success rate can reach more than 95 percent, the effectiveness is greatly improved, and the invention can provide an effective and accurate test system and effectiveness judgment method for calibration and research in the RDE laboratory for automobile manufacturers and related research institutions.
The process in the embodiment of the application is a closed-loop real road RDE test simulation system, and has a self-judgment function on the accuracy and reliability of RDE simulation result data, so that the accuracy of RDE simulation test is greatly improved.
The above steps are described in detail below.
In some embodiments, a fixed emission analyzer and an on-board exhaust emission analyzer in an automobile RDE simulation system are connected in series through an exhaust pipe; the step S140 may include the following steps:
step a), carrying out consistency judgment on actual engine parameters of a target vehicle on an actual road and simulated engine parameters of the target vehicle in an automobile RDE simulation system by comparison to obtain a first judgment result;
step b), performing consistency judgment on the simulated emission results of the fixed emission analyzer and the vehicle-mounted tail gas emission analyzer in the simulated RDE emission test results and the actual emission results of the vehicle-mounted tail gas emission analyzer in the actual road emission test results by comparison to obtain a second judgment result;
and c), determining a difference result between the actual road RDE emission test result and the simulated RDE emission test result based on the first determination result and the second determination result.
In practical application, consistency determination can be respectively carried out on engine parameters (namely engine speed and engine load) in an actual road test and a laboratory RDE recurrence test and emission test results of a vehicle-mounted exhaust emission analyzer (PEMS) and a fixed emission analyzer in the laboratory in the actual road test and the laboratory RDE recurrence test, so that a basis is provided for whether the RDE laboratory recurrence test is successful or not.
Based on the above steps a), b) and c), the above step S140 may include the following steps:
and d), if the consistency degrees in the first judgment result and the second judgment result are both greater than the preset consistency degree, determining that the validity of the simulated RDE emission test result reaches the preset validity standard.
For example, when the RDE recurring test results of the test rooms are all in the validity judgment requirement range, the RDE recurring test results are judged to be valid, and the vehicle type can effectively and accurately reproduce the emission test results of the vehicle on the actual road in the test rooms. The validity judgment result can be more accurate through the judgment directions in various aspects such as the first judgment result, the second judgment result and the like.
Based on the step d), the actual engine parameters comprise actual engine speed and actual engine load; the simulated engine parameters comprise a simulated engine rotating speed and a simulated engine load; the step d) may include the steps of:
step e), if the relative deviation between the actual engine speed and the simulated engine speed is smaller than a first preset deviation threshold value, determining that the validity of the simulated RDE emission test result reaches a first preset validity standard;
and f), if the relative deviation between the actual engine load and the simulated engine load is smaller than a second preset deviation threshold value, determining that the validity of the simulated RDE emission test result reaches a second preset validity standard.
As shown in fig. 4 and 5, the engine parameters (i.e., the engine speed and the engine load) during the actual road test and the laboratory RDE recurrence test may be respectively determined to be consistent, which is used as a basis for determining whether the RDE laboratory recurrence test is successful. Illustratively, the allowable range of relative deviation of two parameter indexes of engine speed and engine load in an actual road test and a laboratory RDE recurrence test is 0-15%. By determining the standard deviation of the engine speed, the engine load and the like, the validity determination result can be more accurate through more determinations.
Based on the step d), the simulated RDE emission test result comprises a simulated PEMS emission result, and the actual emission test result comprises an actual PEMS emission result; the step d) may include the steps of:
step g), if the relative deviation between the actual PEMS emission result and the simulated PEMS emission result is less than a third preset deviation threshold, determining that the validity of the simulated RDE emission test result reaches a third preset validity standard.
In practical application, consistency judgment can be respectively carried out on emission test results of a vehicle-mounted exhaust emission analyzer (PEMS) and a fixed emission analyzer in a test chamber during an actual road test and a RDE (remote data acquisition) recurring test in the test chamber, and the consistency judgment can be used as a basis for judging whether the RDE recurring test is successful or not.
Illustratively, as shown in FIGS. 6 and 7, the emissions from PEMS were 0-10% biased for both the actual road emissions test and the laboratory RDE replicate test. Wherein vehicle-mounted PEMS emission analyzers are tested on actual roads and laboratory chassis dynamometers, respectively.
Based on the above steps e), f) and g), the method may further comprise the steps of:
and h), if the validity of the simulated RDE emission test result reaches the first preset validity standard, the second preset validity standard and the third preset validity standard, determining that the validity of the simulated RDE emission test result reaches the final preset validity standard.
For example, when the result of the RDE recurring test in the test room is within the validity judgment requirement range, the result of the RDE recurring test is judged to be valid, so that the vehicle type can effectively and accurately reproduce the emission test result of the vehicle on the actual road in the test room.
In some embodiments, before step S110, the method may further include the steps of:
step i), verifying the equipment state of the simulated emission equipment in the automobile RDE simulation system to obtain a verification result, and judging whether the equipment state of the simulated emission equipment is stable or not according to the verification result;
step j), if the equipment state is stable, executing the step of collecting the environmental condition, road spectrum and vehicle emission data of the target vehicle on the actual road.
For example, as shown in fig. 2, after the test validity determination test of the emission device in step 1 is completed, the collection and test of the actual road environment condition, road spectrum and vehicle emission data in step 2 may be performed. Verifying and judging the equipment state and the validity of the test result of the emission equipment (a fixed emission analyzer and a vehicle-mounted tail gas analyzer PEMS in a test room) before the whole RDE simulation test, ensuring that the emission test equipment is stable in state and the test result is accurate (within an acceptable test deviation range), namely, carrying out the vehicle emission equipment test validity judgment test in the step 1 in the test room. The method comprises the steps that a vehicle-mounted tail gas analyzer PEMS and a fixed emission analyzer in a test room are connected in series through a tail gas pipe to carry out WLTC working condition emission test, two sets of emission equipment simultaneously measure emission pollutants of a test vehicle, difference calculation is carried out on emission pollutant ratio emission results measured by the two sets of emission equipment, when the emission pollutants meet the following table allowance error, the state of the emission equipment is judged to be stable, the test result is effective, and further emission test can be carried out.
It should be noted that the error value is the result of subtracting the emission result of the laboratory stationary emission analyzer from the emission result of the vehicle-mounted analyzer, and the error ratio is the error value divided by the emission result of the laboratory stationary emission analyzer.
Through the verification of the effectiveness of the equipment test before the RDE simulation test, the stable state of the emission test equipment can be ensured before the whole RDE simulation test, and the test result is accurate, namely, the device is in an acceptable test deviation range, so that a foundation is laid for the effectiveness of the subsequent simulation test and result verification.
Fig. 8 provides a schematic structural diagram of an effectiveness determination device based on an automobile RDE simulation system. As shown in fig. 8, the validity determination device 800 based on the automobile RDE simulation system includes:
the acquisition module 801 is used for acquiring environmental conditions, road spectrums and vehicle emission data of a target vehicle on an actual road;
the analysis module 802 is configured to perform an RDE emission analysis based on the environmental conditions, the road spectrum, and the vehicle emission data to obtain an actual road RDE emission test result;
the test module 803 is used for testing a target vehicle through an automobile RDE simulation system based on environmental conditions, road spectrums and vehicle emission data to obtain a simulated RDE emission test result;
and the comparison module 804 is used for comparing the difference between the actual road RDE emission test result and the simulated RDE emission test result to obtain a difference result, and performing effectiveness analysis based on the difference result to obtain the effectiveness of the simulated RDE emission test result.
In some embodiments, a fixed emission analyzer and an on-board exhaust emission analyzer in an automobile RDE simulation system are connected in series through an exhaust pipe; the comparison module 804 is specifically configured to:
carrying out consistency judgment on actual engine parameters of a target vehicle on an actual road and simulated engine parameters of the target vehicle in an automobile RDE simulation system by comparison to obtain a first judgment result;
carrying out consistency judgment on the simulated emission results of the fixed emission analyzer and the vehicle-mounted tail gas emission analyzer in the simulated RDE emission test result and the actual emission result of the vehicle-mounted tail gas emission analyzer in the actual road emission test result by comparison to obtain a second judgment result;
and determining a difference result between the actual road RDE emission test result and the simulated RDE emission test result based on the first determination result and the second determination result.
In some embodiments, the comparison module is further to:
and if the consistency degrees in the first judgment result and the second judgment result are both greater than the preset consistency degree, determining that the validity of the simulated RDE emission test result reaches the preset validity standard.
In some embodiments, the actual engine parameters include actual engine speed and actual engine load; the simulated engine parameters comprise a simulated engine rotating speed and a simulated engine load; the comparison module 804 is specifically configured to:
if the relative deviation between the actual engine speed and the simulated engine speed is smaller than a first preset deviation threshold value, determining that the validity of the simulated RDE emission test result reaches a first preset validity standard;
and if the relative deviation between the actual engine load and the simulated engine load is less than a second preset deviation threshold, determining that the validity of the simulated RDE emission test result meets a second preset validity standard.
In some embodiments, the simulated RDE emission test results include simulated PEMS emission results, and the actual emission test results include actual PEMS emission results; the comparison module 804 is further configured to:
and if the relative deviation between the actual PEMS emission result and the simulated PEMS emission result is less than a third preset deviation threshold value, determining that the validity of the simulated RDE emission test result reaches a third preset validity standard.
In some embodiments, the comparison module 804 is further configured to:
and if the validity of the simulated RDE emission test result reaches a first preset validity standard, a second preset validity standard and a third preset validity standard, determining that the validity of the simulated RDE emission test result reaches a final preset validity standard.
In some embodiments, the apparatus further comprises:
the verification module is used for verifying the equipment state of the simulated emission equipment in the automobile RDE simulation system before acquiring the environmental conditions, road spectrum and vehicle emission data of the target vehicle on the actual road to obtain a verification result, and judging whether the equipment state of the simulated emission equipment is stable or not according to the verification result; and if the equipment state is stable, acquiring the environmental condition, road spectrum and vehicle emission data of the target vehicle on the actual road.
The validity determination device based on the automobile RDE simulation system provided by the embodiment of the application has the same technical characteristics as the validity determination method based on the automobile RDE simulation system provided by the embodiment, so that the same technical problems can be solved, and the same technical effect is achieved.
As shown in fig. 9, an electronic device 900 includes a processor 902 and a memory 901, where a computer program operable on the processor is stored in the memory, and the processor executes the computer program to implement the steps of the method provided in the foregoing embodiment.
Referring to fig. 9, the electronic device further includes: a bus 903 and a communication interface 904, the processor 902, the communication interface 904, and the memory 901 are connected by the bus 903; the processor 902 is used to execute executable modules, such as computer programs, stored in the memory 901.
The Memory 901 may include a high-speed Random Access Memory (RAM), and may also include a non-volatile Memory (non-volatile Memory), such as at least one disk Memory. The communication connection between the network element of the system and at least one other network element is realized through at least one communication interface 904 (which may be wired or wireless), and the internet, a wide area network, a local network, a metropolitan area network, and the like can be used.
Bus 903 may be an ISA bus, PCI bus, EISA bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one double-headed arrow is shown in FIG. 9, but this does not indicate only one bus or one type of bus.
The memory 901 is used for storing a program, and the processor 902 executes the program after receiving an execution instruction, and the method performed by the apparatus defined by the process disclosed in any of the foregoing embodiments of the present application may be applied to the processor 902, or implemented by the processor 902.
The processor 902 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 902. The Processor 902 may be a general-purpose Processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; the device can also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA), or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 901, and the processor 902 reads the information in the memory 901, and completes the steps of the above method in combination with the hardware thereof.
Corresponding to the effectiveness determination method based on the automobile RDE simulation system, the embodiment of the application also provides a computer readable storage medium, and the computer readable storage medium stores computer executable instructions, and when the computer executable instructions are called and executed by a processor, the computer executable instructions cause the processor to execute the steps of the effectiveness determination method based on the automobile RDE simulation system.
The validity determination device based on the automobile RDE simulation system provided by the embodiment of the application can be specific hardware on equipment, or software or firmware installed on the equipment. The device provided by the embodiment of the present application has the same implementation principle and technical effect as the foregoing method embodiments, and for the sake of brief description, reference may be made to the corresponding contents in the foregoing method embodiments where no part of the device embodiments is mentioned. It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the foregoing systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed coupling or direct coupling or communication connection between each other may be through some communication interfaces, indirect coupling or communication connection between devices or units, and may be in an electrical, mechanical or other form.
For another example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments provided in the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or a part of the technical solution that substantially contributes to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the validity determination method based on the automobile RDE simulation system according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus once an item is defined in one figure, it need not be further defined and explained in subsequent figures, and moreover, the terms "first", "second", "third", etc. are used merely to distinguish one description from another and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present application, and are used for illustrating the technical solutions of the present application, but not limiting the same, and the scope of the present application is not limited thereto, and although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: those skilled in the art can still make modifications or changes to the embodiments described in the foregoing embodiments, or make equivalent substitutions for some features, within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the scope of the embodiments of the present application. Are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. An effectiveness judgment method based on an automobile RDE simulation system is characterized by comprising the following steps:
collecting environmental conditions, road spectrums and vehicle emission data of a target vehicle on an actual road;
performing RDE emission analysis based on the environmental conditions, the road spectrum and the vehicle emission data to obtain an actual road RDE emission test result;
testing the target vehicle through the automobile RDE simulation system based on the environmental condition, the road spectrum and the vehicle emission data to obtain a simulated RDE emission test result;
and comparing the difference between the actual road RDE emission test result and the simulated RDE emission test result to obtain a difference result, and carrying out effectiveness analysis based on the difference result to obtain the effectiveness of the simulated RDE emission test result.
2. The method of claim 1, wherein the stationary emission analyzer and the on-board exhaust emission analyzer in the automotive RDE simulation system are connected in series via an exhaust pipe;
comparing the difference between the actual road RDE emission test result and the simulated RDE emission test result to obtain a difference result, wherein the difference result comprises the following steps:
performing consistency judgment on actual engine parameters of the target vehicle on an actual road and simulated engine parameters of the target vehicle in the automobile RDE simulation system by comparison to obtain a first judgment result;
performing consistency judgment on the simulated emission results of the fixed emission analyzer and the vehicle-mounted tail gas emission analyzer in the simulated RDE emission test result and the actual emission result of the vehicle-mounted tail gas emission analyzer in the actual road emission test result by comparison to obtain a second judgment result;
determining a difference result between the actual road RDE emission test result and the simulated RDE emission test result based on the first determination result and the second determination result.
3. The method of claim 2, wherein performing an effectiveness analysis based on the difference results to obtain the effectiveness of the simulated RDE emission test results comprises:
and if the consistency degrees in the first judgment result and the second judgment result are both greater than a preset consistency degree, determining that the validity of the simulated RDE emission test result reaches a preset validity standard.
4. The method of claim 3, wherein the actual engine parameters include actual engine speed and actual engine load; the simulated engine parameters comprise a simulated engine speed and a simulated engine load; if the consistency degree of the first judgment result and the second judgment result is greater than a preset consistency degree, determining that the validity of the simulated RDE emission test result reaches a preset validity standard, including:
determining that the validity of the simulated RDE emission test result meets a first preset validity standard if the relative deviation between the actual engine speed and the simulated engine speed is less than a first preset deviation threshold;
determining that the validity of the simulated RDE emission test result meets a second preset validity criterion if the relative deviation between the actual engine load and the simulated engine load is less than a second preset deviation threshold.
5. The method of claim 4, wherein said simulated RDE emissions test results comprise simulated PEMS emissions results and said actual emissions test results comprise actual PEMS emissions results; if the consistency degree of the first judgment result and the second judgment result is greater than a preset consistency degree, determining that the validity of the simulated RDE emission test result reaches a preset validity standard, including:
and if the relative deviation between the actual PEMS emission result and the simulated PEMS emission result is less than a third preset deviation threshold value, determining that the validity of the simulated RDE emission test result reaches a third preset validity standard.
6. The method of claim 5, wherein determining that the validity of the simulated RDE emissions test result meets a predetermined validity criterion if the degree of agreement in both the first and second determinations is greater than a predetermined degree of agreement, further comprises:
and if the validity of the simulated RDE emission test result reaches a first preset validity standard, a second preset validity standard and a third preset validity standard, determining that the validity of the simulated RDE emission test result reaches a final preset validity standard.
7. The method of claim 1, further comprising, prior to said collecting environmental conditions, road spectrum, and vehicle emissions data of the target vehicle on the actual road:
verifying the equipment state of the emission simulation equipment in the automobile RDE simulation system to obtain a verification result, and judging whether the equipment state of the emission simulation equipment is stable or not according to the verification result;
and if the equipment state is stable, acquiring the environmental condition, road spectrum and vehicle emission data of the target vehicle on the actual road.
8. An effectiveness determination device based on an automobile RDE simulation system is characterized by comprising:
the acquisition module is used for acquiring the environmental conditions, road spectrums and vehicle emission data of the target vehicle on the actual road;
the analysis module is used for carrying out RDE emission analysis based on the environmental conditions, the road spectrum and the vehicle emission data to obtain an actual road RDE emission test result;
the test module is used for testing the target vehicle through the automobile RDE simulation system based on the environmental condition, the road spectrum and the vehicle emission data to obtain a simulated RDE emission test result;
and the comparison module is used for comparing the difference between the actual road RDE emission test result and the simulated RDE emission test result to obtain a difference result, and carrying out effectiveness analysis based on the difference result to obtain the effectiveness of the simulated RDE emission test result.
9. An electronic device comprising a memory and a processor, wherein the memory stores a computer program operable on the processor, and wherein the processor implements the steps of the method of any of claims 1 to 7 when executing the computer program.
10. A computer readable storage medium having stored thereon computer executable instructions which, when invoked and executed by a processor, cause the processor to execute the method of any of claims 1 to 7.
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| CN116878559A (en) * | 2023-09-07 | 2023-10-13 | 中理检验有限公司 | Method, device, equipment and storage medium for verifying emission data of shipping turbine |
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| CN116878559A (en) * | 2023-09-07 | 2023-10-13 | 中理检验有限公司 | Method, device, equipment and storage medium for verifying emission data of shipping turbine |
| CN116878559B (en) * | 2023-09-07 | 2023-11-10 | 中理检验有限公司 | Method, device, equipment and storage medium for verifying emission data of shipping turbine |
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