PEMS Test Drum Simulation Method, Device, Vehicle and Storage Medium

Abstract

The present application discloses a PEMS test drum simulation method, device, vehicle and computer-readable storage medium. The method includes: generating a first vehicle speed curve graph according to a prefabricated rule, and performing filtering processing on the first vehicle speed curve graph to generate a speed curve graph for simulating the PEMS device cycle, so that the vehicle to be simulated performs drum simulation according to the generated speed curve graph for simulating the PEMS device cycle, thereby solving the problem that road tests are inconvenient through drum simulation, and also being able to solve the problem of unstable equipment. At the same time, the operating conditions of the vehicle also conform to the actual driving process, which not only speeds up the test progress but also reduces the occupation of human resources and equipment resources during the vehicle development process.

Description

Technical Field

[0001] This application relates to the field of automotive technologies, and particularly to a PEMS test drum simulation method, device, vehicle, and computer-readable storage medium. Background Art

[0002] The current national standard GB 17691-2018 clearly states that vehicles need to conduct PEMS tests on actual roads. This process requires a long preparation time and has certain requirements for the weather. High temperatures in summer, low temperatures in winter, rainy days, etc. are not suitable for conducting tests on natural environment roads. Moreover, the PEMS equipment used in this process is installed on the vehicle and works, resulting in long-term exposure to road bumps, and the test accuracy needs to be corrected and maintained frequently. Especially during vehicle development, due to natural environmental factors, the development difficulty increases and the cycle becomes longer. Summary of the Invention

[0003] The main purpose of this application is to provide a PEMS test drum simulation method, device, vehicle, and computer-readable storage medium, aiming at the technical problem that the development difficulty increases and the cycle becomes longer due to natural environmental factors when the vehicle conducts PEMS tests.

[0004] In a first aspect, this application provides a PEMS test drum simulation method, and the method includes the following steps:

[0005] Generate a first vehicle speed curve graph according to a prefabricated rule, and perform filtering processing on the first vehicle speed curve graph to generate a speed curve graph for simulating the pems device cycle, so that the vehicle to be simulated performs drum simulation according to the generated speed curve graph for simulating the pems device cycle.

[0006] Optionally, the filtering processing includes forward filtering processing and reverse filtering processing.

[0007] Optionally, the performing filtering processing on the first vehicle speed curve graph to generate a speed curve graph for simulating the pems device cycle includes:

[0008] Perform reverse filtering processing on the first vehicle speed curve graph to generate a second vehicle speed curve graph;

[0009] Perform forward filtering processing on the generated second vehicle speed curve graph to generate a speed curve graph for simulating the pems device cycle.

[0010] Optionally, before generating the speed curve graph for simulating the pems device cycle, it further includes:

[0011] Perform forward filtering processing on the generated second vehicle speed curve graph to generate a third vehicle speed curve graph;

[0012] Judge whether the third vehicle speed curve graph meets the speed requirement according to the preset curve factor;

[0013] If it meets the requirement, use the third vehicle speed curve graph as the speed curve graph for the pems device simulation cycle.

[0014] Optionally, after judging whether the third vehicle speed curve graph meets the speed requirement according to the preset curve factor, it further includes:

[0015] If it does not meet the requirement, perform forward filtering processing on the third vehicle speed curve graph again to generate a fourth vehicle speed curve graph;

[0016] If it is determined that the fourth vehicle speed curve graph meets the preset curve factor A, use the fourth vehicle speed curve graph as the speed curve graph for the pems device simulation cycle.

[0017] Optionally, judging whether the third vehicle speed curve graph meets the speed requirement according to the preset curve factor includes:

[0018] Obtain the phase difference between the maximum acceleration and the minimum deceleration in the third vehicle speed curve graph;

[0019] Obtain the preset phase difference range of the preset curve factor;

[0020] Judge whether the phase difference between the maximum acceleration and the minimum deceleration in the third vehicle speed curve graph is within the preset phase difference range.

[0021] Optionally, the first vehicle speed curve graph generated according to the prefabricated rules includes:

[0022] Generate a road to be simulated according to the number of traffic lights, the duration of traffic lights, and the distance of the road in the standard road;

[0023] Set the vehicle to drive on the road to be simulated, and generate the first vehicle speed curve graph with the driving vehicle speed.

[0024] In a second aspect, the present application further provides a PEMS test drum simulation device, and the device includes:

[0025] A generation and simulation module, configured to generate a first vehicle speed curve graph according to prefabricated rules, and perform filtering processing on the first vehicle speed curve graph to generate a speed curve graph for the pems device simulation cycle, so that the vehicle to be simulated performs drum simulation according to the generated speed curve graph for the pems device simulation cycle.

[0026] In a third aspect, the present application further provides a vehicle, and the vehicle includes a processor, a memory, and a computer program stored on the memory and executable by the processor. When the computer program is executed by the processor, the steps of the PEMS test drum simulation method as described above are implemented.

[0027] In a fourth aspect, the present application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the PEMS test drum simulation method as described above are implemented.

[0028] The present application provides a PEMS test drum simulation method, device, vehicle and computer-readable storage medium. By generating a first vehicle speed curve graph according to pre-set rules and performing filtering processing on the first vehicle speed curve graph to generate a speed curve graph of the pems device simulation cycle, the drum simulation is performed on the vehicle to be simulated according to the generated speed curve graph of the pems device simulation cycle, so as to solve the problem that road tests are inconvenient through drum simulation, and also solve the problem of unstable equipment. At the same time, the operating conditions of the vehicle also conform to the actual driving process, which speeds up the test progress and reduces the occupation of human and equipment resources during the vehicle development process. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0030] Figure 1 It is a schematic flow chart of a PEMS test drum simulation method provided by an embodiment of the present application;

[0031] Figure 2 It is a schematic diagram of a speed interval provided by an embodiment of the present application;

[0032] Figure 3 It is a schematic diagram of a speed curve provided by an embodiment of the present application;

[0033] Figure 4 It is a schematic diagram of an average speed curve provided by an embodiment of the present application;

[0034] Figure 5 It is a schematic diagram of a second speed curve provided by an embodiment of the present application;

[0035] Figure 6 It is a schematic diagram of a speed curve of a simulation cycle provided by an embodiment of the present application;

[0036] Figure 7 It is a schematic diagram of a third speed curve provided by an embodiment of the present application;

[0037] Figure 8 It is a schematic diagram of a fourth vehicle speed curve provided by an embodiment of the present application;

[0038] Figure 9 A schematic block diagram of a PEMS test drum simulation device provided by an embodiment of the present application;

[0039] Figure 10 A schematic structural diagram of a computer device related to an embodiment of the present application.

[0040] The implementation, functional features and advantages of the purpose of the present application will be further described in conjunction with the embodiments with reference to the accompanying drawings. Detailed implementation manners

[0041] Next, the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0042] The flowcharts shown in the accompanying drawings are only illustrative examples, and do not necessarily include all contents and operations / steps, nor do they necessarily need to be executed in the described order. For example, some operations / steps can be decomposed, combined or partially merged, so the actual execution order may be changed according to the actual situation.

[0043] The embodiments of the present application provide a PEMS test drum simulation method, device, vehicle and computer-readable storage medium. Among them, this can be applied to vehicles.

[0044] Next, some embodiments of the present application will be described in detail with reference to the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0045] Please refer to Figure 1 , Figure 1 A flowchart of a PEMS test drum simulation method provided by an embodiment of the present application.

[0046] As Figure 1 shown, this method includes step S101.

[0047] Step S101: Generate a first vehicle speed curve graph according to a prefabricated rule, and perform filtering processing on the first vehicle speed curve graph to generate a speed curve graph of the pems device simulation cycle, so that the vehicle to be simulated performs drum simulation according to the generated speed curve graph of the pems device simulation cycle.

[0048] Exemplarily, a first vehicle speed curve graph is generated by pre-customizing rules. For example, it is set to drive at a first vehicle speed for a certain period of time, drive at a second vehicle speed for a certain period of time, or stop driving for a certain period of time. The first vehicle speed and the second vehicle speed include acceleration driving and deceleration driving. The generated first vehicle speed curve graph is subjected to filtering processing, which includes forward filtering processing and reverse filtering processing. For example, the finally required speed curve should be a vehicle speed curve with curve characteristics. Therefore, the previously generated curve is subjected to anti-smoothening processing, and this processing process is to make a regular and smooth speed curve fluctuate (reverse filtering). A speed curve graph for simulating the pems device cycle is generated from the first vehicle speed curve graph after filtering processing, and then the generated speed curve graph for simulating the pems device cycle is uploaded to the vehicle to be simulated, so that the vehicle to be simulated performs drum simulation according to the generated speed curve graph for simulating the pems device cycle.

[0049] Specifically, the first vehicle speed curve graph generated according to the prefabricated rules includes: generating a road to be simulated according to the number of traffic lights, the duration of traffic lights, and the distance of the road in the standard road; setting the vehicle to drive on the road to be simulated, and generating the first vehicle speed curve graph from the driving vehicle speed.

[0050] Exemplarily, through the investigation of urban roads, the number N of traffic lights in a section of the road in the urban area 灯 , the number of times N1 of waiting for traffic lights and the number of times N2 of passing directly, the distance S between 灯 , the time T required to pass the traffic lights 灯 and the speed V of the vehicle when passing the traffic lights 灯 . During the driving process, the traffic light conditions are displayed according to two axes, the time axis and the mileage axis. After fully investigating these influencing factors, a large amount of statistical processing is performed on these data, and finally a reasonable range interval is obtained. According to the confirmed parameter values, the traffic lights are scattered on the axis of a section of mileage according to a certain algorithm. After the distribution of the traffic lights is completed, the signal conditions and passing times are assigned to each traffic light. After the distribution setting and time setting are completed, the distance between each traffic light can be regarded as a separate driving segment, and a reasonable average speed is set for each driving. Take a section of the graph during the entire driving process as follows Figure 2 shown. Initially generating a suitable speed-time graph is a relatively regular graph, similar to smoothing the actual speed-time graph. As follows Figure 3 shown, the actual vehicle speed curve and the speed curve after smoothing processing. For example, the road congestion period is also set.

[0051] Specifically, the filtering process for the first vehicle speed curve graph to generate the speed curve graph of the PEMS device simulation cycle includes: performing an inverse filtering process on the first vehicle speed curve graph to generate a second vehicle speed curve graph; and performing a forward filtering process on the generated second vehicle speed curve graph to generate the speed curve graph of the PEMS device simulation cycle.

[0052] Exemplarily, as Figure 4 shown, a conforming average speed curve is generated, where the average speed curve is the first vehicle speed curve graph. As Figure 5 shown, the average speed curve is subjected to an inverse filtering process to generate a second vehicle speed curve graph, and the second vehicle speed curve graph vibrates up and down based on 30 as the reference. As Figure 6 shown, the generated second vehicle speed curve graph is subjected to a forward filtering process to generate the speed curve graph of the PEMS device simulation cycle.

[0053] Specifically, before generating the speed curve graph of the PEMS device simulation cycle, it further includes: performing a forward filtering process on the generated second vehicle speed curve graph to generate a third vehicle speed curve graph; judging whether the third vehicle speed curve graph meets the speed requirement according to a preset curve factor; if it meets, using the third vehicle speed curve graph as the speed curve graph of the PEMS device simulation cycle.

[0054] Exemplarily, as Figure 7 shown, after performing a forward filtering process on the generated second vehicle speed curve graph to generate a third vehicle speed curve graph, it is judged whether the third vehicle speed curve graph meets the speed requirement through a preset curve factor. If it is determined to meet, using the third vehicle speed curve graph as the speed curve graph of the PEMS device simulation cycle; if it does not meet, as Figure 8 shown, performing a forward filtering process on the third vehicle speed curve graph again to generate a fourth vehicle speed curve graph; if it is determined that the fourth vehicle speed curve graph meets the preset curve factor, using the fourth vehicle speed curve graph as the speed curve graph of the PEMS device simulation cycle.

[0055] For example, obtaining the phase difference between the maximum acceleration and the minimum deceleration in the third vehicle speed curve graph; obtaining the preset phase difference range of the preset curve factor; and judging whether the phase difference between the maximum acceleration and the minimum deceleration in the third vehicle speed curve graph is within the preset phase difference range. Exemplarily, the obtained preset phase difference range of the preset curve factor is 6 m / s - 8 m / s, and the phase difference between the maximum acceleration and the minimum deceleration in the third vehicle speed curve graph is 6 m / s or 8 m / s, then it is determined to meet the speed requirement. If the phase difference between the maximum acceleration and the minimum deceleration in the third vehicle speed curve graph is 5 m / s, then it is determined not to meet the speed requirement. If the phase difference between the maximum acceleration and the minimum deceleration in the third vehicle speed curve graph is 9 m / s, then it is determined not to meet the speed requirement.

[0056] The characteristics of the generated curve are highly consistent with the characteristics of the speed curve during the actual PEMS test. After obtaining the final vehicle speed curve, the speed can be imported onto the drum, and then the vehicle can follow the curve for driving, and the emission data can be measured in real time using the emission equipment.

[0057] In the embodiment of the present application, by generating a first vehicle speed curve graph according to prefabricated rules and performing filtering processing on the first vehicle speed curve graph, a speed curve graph for simulating the PEMS equipment cycle is generated, so that the vehicle to be simulated performs drum simulation according to the generated speed curve graph for simulating the PEMS equipment cycle, realizing the solution of the problem of inconvenient road testing through drum simulation, and also being able to solve the problem of unstable equipment. At the same time, the operating conditions of the vehicle also conform to the actual driving process, accelerating the test progress and reducing the occupation of human and equipment resources during the vehicle development process.

[0058] Please refer to Figure 9 , Figure 9 which is a schematic block diagram of a PEMS test drum simulation device provided by an embodiment of the present application.

[0059] As Figure 9 shown, the device 400 includes: a generation and simulation module 401.

[0060] The generation and simulation module 401 is used to generate a first vehicle speed curve graph according to prefabricated rules and perform filtering processing on the first vehicle speed curve graph to generate a speed curve graph for simulating the PEMS equipment cycle, so that the vehicle to be simulated performs drum simulation according to the generated speed curve graph for simulating the PEMS equipment cycle.

[0061] Among them, the PEMS test drum simulation device is also used for:

[0062] The filtering processing includes forward filtering processing and reverse filtering processing.

[0063] Among them, the PEMS test drum simulation device is also used for:

[0064] The performing filtering processing on the first vehicle speed curve graph to generate a speed curve graph for simulating the PEMS equipment cycle includes:

[0065] Performing reverse filtering processing on the first vehicle speed curve graph to generate a second vehicle speed curve graph;

[0066] Performing forward filtering processing on the generated second vehicle speed curve graph to generate a speed curve graph for simulating the PEMS equipment cycle.

[0067] Among them, the PEMS test drum simulation device is also used for:

[0068] Before generating the speed curve graph of the PEMS device simulation cycle, it further includes:

[0069] Perform forward filtering on the generated second vehicle speed curve graph to generate a third vehicle speed curve graph;

[0070] Judge whether the third vehicle speed curve graph meets the speed requirement according to the preset curve factor;

[0071] If it meets the requirement, use the third vehicle speed curve graph as the speed curve graph of the PEMS device simulation cycle.

[0072] Among them, the PEMS test drum simulation device is also used for:

[0073] After judging whether the third vehicle speed curve graph meets the speed requirement according to the preset curve factor, it further includes:

[0074] If it does not meet the requirement, perform forward filtering on the third vehicle speed curve graph again to generate a fourth vehicle speed curve graph;

[0075] Determine that the fourth vehicle speed curve graph meets the preset curve factor A, and use the fourth vehicle speed curve graph as the speed curve graph of the PEMS device simulation cycle.

[0076] Among them, the PEMS test drum simulation device is also used for:

[0077] Judging whether the third vehicle speed curve graph meets the speed requirement according to the preset curve factor includes:

[0078] Obtain the phase difference between the maximum acceleration and the minimum deceleration in the third vehicle speed curve graph;

[0079] Obtain the preset phase difference range of the preset curve factor;

[0080] Judge whether the phase difference between the maximum acceleration and the minimum deceleration in the third vehicle speed curve graph is within the preset phase difference range.

[0081] Among them, the PEMS test drum simulation device is also used for:

[0082] The first vehicle speed curve graph generated according to the preset rule includes:

[0083] Generate a to-be-simulated road according to the number of traffic lights, the duration of traffic lights, and the distance of the road in the standard road;

[0084] Set the vehicle to drive on the to-be-simulated road, and generate the first vehicle speed curve graph with the driving vehicle speed.

[0085] It should be noted that those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the above-described device and each module and unit can refer to the corresponding processes in the foregoing embodiments, and will not be elaborated herein.

[0086] The device provided by the foregoing embodiment can be implemented in the form of a computer program, and the computer program can run on a computer device as Figure 10 shown.

[0087] Please refer to Figure 10 , Figure 10 , which is a schematic block diagram of the structure of a computer device provided by an embodiment of the present application. The computer device can be a terminal.

[0088] As Figure 10 shown, the computer device includes a processor, a memory, and a network interface connected through a system bus. Among them, the memory can include a non-volatile storage medium and an internal memory.

[0089] The non-volatile storage medium can store an operating system and a computer program. The computer program includes program instructions, and when the program instructions are executed, the processor can execute any one of the PEMS test drum simulation methods.

[0090] The processor is used to provide computing and control capabilities to support the operation of the entire computer device.

[0091] The internal memory provides an environment for the operation of the computer program in the non-volatile storage medium. When the computer program is executed by the processor, the processor can execute any one of the PEMS test drum simulation methods.

[0092] The network interface is used for network communication, such as sending assigned tasks, etc. Those skilled in the art can understand that Figure 10 the structure shown in

[0093] It should be understood that the processor can be a Central Processing Unit (CPU), and the processor can also be other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field-Programmable Gate Arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. Among them, the general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc.

[0094] Among them, in one embodiment, the processor is used to run a computer program stored in a memory to implement the following steps:

[0095] Generate a first vehicle speed curve graph according to a prefabricated rule, and perform filtering processing on the first vehicle speed curve graph to generate a speed curve graph of the pems device simulation cycle, so that the vehicle to be simulated performs drum simulation according to the generated speed curve graph of the pems device simulation cycle.

[0096] In one embodiment, when the processor is implemented, it is used to implement:

[0097] The filtering processing includes forward filtering processing and reverse filtering processing.

[0098] In one embodiment, when the processor implements filtering processing on the first vehicle speed curve graph to generate a speed curve graph of the pems device simulation cycle, it is used to implement:

[0099] Perform reverse filtering processing on the first vehicle speed curve graph to generate a second vehicle speed curve graph;

[0100] Perform forward filtering processing on the generated second vehicle speed curve graph to generate a speed curve graph of the pems device simulation cycle.

[0101] In one embodiment, before the processor implements generating a speed curve graph of the pems device simulation cycle, it is used to implement:

[0102] Perform forward filtering processing on the generated second vehicle speed curve graph to generate a third vehicle speed curve graph;

[0103] Judge whether the third vehicle speed curve graph meets the speed requirement according to a preset curve factor;

[0104] If it meets the requirement, use the third vehicle speed curve graph as the speed curve graph of the pems device simulation cycle.

[0105] In one embodiment, after the processor determines whether the third vehicle speed curve graph meets the speed requirement according to the preset curve factor, it is used to implement:

[0106] If it does not meet the requirement, perform forward filtering processing on the third vehicle speed curve graph again to generate a fourth vehicle speed curve graph;

[0107] When it is determined that the fourth vehicle speed curve graph meets the preset curve factor A, use the fourth vehicle speed curve graph as the speed curve graph for the pems device simulation cycle.

[0108] In one embodiment, when the processor determines whether the third vehicle speed curve graph meets the speed requirement according to the preset curve factor, it is used to implement:

[0109] Obtain the phase difference between the maximum acceleration and the minimum deceleration in the third vehicle speed curve graph;

[0110] Obtain the preset phase difference range of the preset curve factor;

[0111] Determine whether the phase difference between the maximum acceleration and the minimum deceleration in the third vehicle speed curve graph is within the preset phase difference range.

[0112] In one embodiment, when the processor generates the first vehicle speed curve graph according to the preset rule, it is used to implement:

[0113] Generate a to-be-simulated road according to the number of traffic lights, the duration of the traffic lights, and the distance of the road in the standard road;

[0114] Set the vehicle to drive on the to-be-simulated road, and generate the first vehicle speed curve graph based on the driving speed.

[0115] The embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored. The computer program includes program instructions, and the PEMS test drum simulation method implemented when the program instructions are executed can refer to the various embodiments of the present application.

[0116] Among them, the computer-readable storage medium may be an internal storage unit of the computer device described in the foregoing embodiment, such as the hard disk or memory of the computer device. The computer-readable storage medium may also be an external storage device of the computer device, such as a plug-in hard disk equipped on the computer device, a Smart Media Card (SMC), a Secure Digital (SD) card, a Flash Card, etc.

[0117] It should be noted that in this text, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or system. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or system including such element.

[0118] The serial numbers of the embodiments of the present application above are only for description and do not represent the superiority or inferiority of the embodiments. The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art in the technical field disclosed by the present application can easily think of various equivalent modifications or substitutions within the technical scope disclosed by the present application, and these modifications or substitutions should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A PEMS test drum simulation method, characterized in that, it includes: A first vehicle speed curve graph generated according to prefabricated rules, and filtering the first vehicle speed curve graph to generate a speed curve graph for the PEMS device simulation cycle, so that the vehicle to be simulated performs drum simulation according to the generated speed curve graph for the PEMS device simulation cycle; The filtering process includes forward filtering and reverse filtering; Filtering the first vehicle speed curve graph to generate a speed curve graph for the PEMS device simulation cycle includes: Performing reverse filtering on the first vehicle speed curve graph to generate a second vehicle speed curve graph; Performing forward filtering on the generated second vehicle speed curve graph to generate a speed curve graph for the PEMS device simulation cycle; The first vehicle speed curve graph generated according to prefabricated rules includes: Generating a road to be simulated according to the number of traffic lights, the duration of traffic lights, and the distance of the road in the standard road; Setting the vehicle to drive on the road to be simulated, and generating a first vehicle speed curve graph from the driving vehicle speed.

2. The PEMS test drum simulation method according to claim 1, characterized in that, Before generating the speed curve graph for the PEMS device simulation cycle, it further includes: Performing forward filtering on the generated second vehicle speed curve graph to generate a third vehicle speed curve graph; Judging whether the third vehicle speed curve graph meets the speed requirement according to a preset curve factor; If it meets, using the third vehicle speed curve graph as the speed curve graph for the PEMS device simulation cycle.

3. The PEMS test drum simulation method according to claim 2, characterized in that, After judging whether the third vehicle speed curve graph meets the speed requirement according to the preset curve factor, it further includes: If it does not meet, performing forward filtering on the third vehicle speed curve graph again to generate a fourth vehicle speed curve graph; Determining that the fourth vehicle speed curve graph meets the preset curve factor, and using the fourth vehicle speed curve graph as the speed curve graph for the PEMS device simulation cycle.

4. The PEMS test drum simulation method according to claim 2, characterized in that, Judging whether the third vehicle speed curve graph meets the speed requirement according to the preset curve factor includes: Obtaining the phase difference between the maximum acceleration and the minimum deceleration in the third vehicle speed curve graph; Obtaining the preset phase difference range of the preset curve factor; Judging whether the phase difference between the maximum acceleration and the minimum deceleration in the third vehicle speed curve graph is within the preset phase difference range.

5. A PEMS test drum simulation device, characterized in that, it includes: A generation and simulation module, configured to generate a first vehicle speed curve graph according to prefabricated rules, and filter the first vehicle speed curve graph to generate a speed curve graph for the PEMS device simulation cycle, so that the vehicle to be simulated performs drum simulation according to the generated speed curve graph for the PEMS device simulation cycle; The filtering process includes forward filtering and reverse filtering; Filtering the first vehicle speed curve graph to generate a speed curve graph for the PEMS device simulation cycle includes: Perform inverse filtering on the first vehicle speed curve graph to generate a second vehicle speed curve graph; Perform forward filtering on the generated second vehicle speed curve graph to generate a speed curve graph for the PEMS device simulation cycle; The first vehicle speed curve graph generated according to the preset rules includes: Generate a road to be simulated according to the number of traffic lights, the duration of the traffic lights, and the distance of the road in the standard road; Set the vehicle to travel on the road to be simulated, and generate the first vehicle speed curve graph based on the traveling vehicle speed.

6. A vehicle, Characterized in that, The vehicle includes a processor, a memory, and a computer program stored on the memory and executable by the processor. When the computer program is executed by the processor, the steps of the PEMS test drum simulation method according to any one of claims 1 to 4 are implemented.

7. A computer-readable storage medium, Characterized in that, A computer program is stored on the computer-readable storage medium. When the computer program is executed by a processor, the steps of the PEMS test drum simulation method according to any one of claims 1 to 4 are implemented.

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