CN117992710A

CN117992710A - Method, apparatus and computer storage medium for processing vehicle NVH performance data

Info

Publication number: CN117992710A
Application number: CN202211333343.0A
Authority: CN
Inventors: 赵汉驰; 赵常云; 李洪鹏
Original assignee: BMW Brilliance Automotive Ltd
Current assignee: BMW Brilliance Automotive Ltd
Priority date: 2022-10-28
Filing date: 2022-10-28
Publication date: 2024-05-07

Abstract

The present disclosure relates to methods, apparatus, and computer storage media for processing vehicle NVH performance data. The method for processing vehicle NVH performance data comprises the following steps: receiving user selections of a test sample vehicle and test conditions via a client interface; retrieving measurement data relating to the user selected test sample vehicle and test conditions from a memory storing vehicle NVH performance data; performing a fast fourier transform FFT on the retrieved measurement data to obtain processed data; and graphically displaying the processed data on the client interface.

Description

Method, apparatus and computer storage medium for processing vehicle NVH performance data

Technical Field

The present disclosure relates generally to the field of information processing, and more particularly to a method, apparatus, and computer storage medium for processing vehicle NVH performance data.

Background

Various vehicles currently have a powertrain, which refers to a series of components that generate power on the vehicle and transmit the power to the road surface. Broadly, powertrain systems include engines, gearboxes, drive shafts, differentials, clutches, and the like. However, in general, the powertrain system refers only to the engine and the gearbox. The operation of the drive train of the vehicle may cause vibrations of the vehicle and bring about noise or the like.

NVH of a vehicle refers to noise, vibration and harshness, which is a comprehensive indicator of vehicle manufacturing quality that is indicative of subjective and surface experiences imparted to a vehicle user. As people continue to increase in comfort, vehicle NVH performance is becoming more and more a concern. Vehicle system vibrations and noise are vibrations and noise that the driver can directly perceive and feel. However, the measurement data based on the NVH performance data of the whole vehicle of the power train is complicated, and the measurement process is more complex and resource-intensive. These NVH performance data are typically collected in the form of acoustic signals through the use of sensors. The collected data is stored in a memory carried by the person performing the test and, after the test is completed, the collected data is aggregated from the individual test persons for testing, analysis and evaluation of the acoustic vibration signals.

Since these acoustic signals are analog signals, these signals typically occupy a large amount of memory space, are difficult to integrate and store in memory, and cannot be viewed directly on the display in real time by the test person.

Accordingly, there is a need in the art to integrate and store data collected in testing vehicle NVH performance in real-time for use by users.

Disclosure of Invention

The following presents a simplified summary of the disclosure in order to provide a basic understanding of some aspects of the disclosure. It should be understood that this summary is not an exhaustive overview of the disclosure. It is not intended to identify key or critical elements of the disclosure or to delineate the scope of the disclosure. Its purpose is to present some concepts related to the disclosure in a simplified form as a prelude to the more detailed description that is presented later.

According to one aspect of the present disclosure, there is provided a method for processing vehicle NVH performance data, comprising: receiving user selections of a test sample vehicle and test conditions via a client interface; retrieving measurement data relating to the user selected test sample vehicle and test conditions from a memory storing vehicle NVH performance data; performing a fast fourier transform FFT on the retrieved measurement data to obtain processed data; and graphically displaying the processed data on the client interface.

According to another aspect of the present disclosure, there is provided a computing device comprising: a display configured to display a user interface; a memory having instructions stored thereon; and a processor configured to execute instructions stored on the memory to perform a method according to the above aspects of the present disclosure.

According to yet another aspect of the present disclosure, there is provided a computer-readable storage medium comprising computer-executable instructions which, when executed by one or more processors, cause the one or more processors to perform a method according to the above aspects of the present disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.

The disclosure may be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings in which:

FIG. 1 illustrates an example diagram of test data collected from a front end in accordance with one embodiment of the present invention;

FIG. 2 illustrates an exemplary flowchart of a process for processing vehicle NVH performance data in accordance with one embodiment of the present invention;

FIG. 3 illustrates an operator interface for a user to select a test sample vehicle, test conditions, etc., in accordance with one embodiment of the present invention;

FIGS. 4A-4C illustrate an interface for operation of processed test signals for different test sample vehicles and test conditions in accordance with one embodiment of the present invention;

FIG. 5 illustrates an exemplary configuration of a computing device in which embodiments according to the present disclosure may be implemented.

Detailed Description

The following detailed description is made with reference to the accompanying drawings and is provided to assist in a comprehensive understanding of various example embodiments of the disclosure. The following description includes various details to aid in understanding, but these are to be considered merely examples and are not intended to limit the disclosure, which is defined by the appended claims and their equivalents. The words and phrases used in the following description are only intended to provide a clear and consistent understanding of the present disclosure. In addition, descriptions of well-known structures, functions and configurations may be omitted for clarity and conciseness. Those of ordinary skill in the art will recognize that various changes and modifications of the examples described herein can be made without departing from the spirit and scope of the present disclosure.

Automotive powertrain NVH is a systematic problem related to the interaction of multiple systems of a vehicle that addresses multiple disciplinary knowledge that relies on acoustics, structural vibrations, and system dynamics, among others. Typically, the powertrain of a vehicle is typically supported on the frame with a rubber suspension, and the engine may be considered as a spatially resilient supported rigid body. The rubber suspension is elastic in three dimensional directions and has the function of a torsion spring. The chassis is supported by two front suspensions and two rear suspensions, and can also be regarded as a spatially elastically supported rigid body. It is apparent that a number of factors need to be considered in testing the NVH performance of a whole vehicle.

Now, testing of vehicle powertrain NVH typically uses sensors at multiple locations in the process to test vibration and noise at the respective locations. The sensors in the test front-end collect data in the form of time-domain signals, both vibration and noise. These sensed data are typically in the form of analog audio and are stored in memory. However, the test data have no visibility, occupy large storage space, are difficult to integrate and store for one project, vehicle type, source or test position, and are impossible for related testers to conveniently search and visually present.

The inventor recognizes that data based on the NVH performance data of the whole vehicle of the powertrain system is cumbersome and requires the database to run the process integration and store the test data for access by the customer at any time.

In order to overcome the problems existing in the prior art, the present inventors propose the present technical solution for implementing at least one of the following:

1. the NVH performance data of the whole vehicle based on the power train in real time is basically divided into test data of acceleration, idling and sliding, and the test data are stored in a terminal hard disk in the form of time domain signals.

2. The database may calibrate the test data for acceleration, idle speed, and coast with the data for human validation.

3. The database automatically carries out FFT conversion through the test sample vehicle and the test working condition selected by the user and is realized in the client interface for the user to check.

4. The database can be accessed by multiple users at the same time. And judging the user permission.

5. Test data of the front end can be directly input into a data file, so that data input is facilitated.

6. The client accesses the unauthorized modification data, and ensures the data security of the database.

The present inventors propose applications based on BS (browser/server) architecture. At the browser end, the user uses the mobile device to display various user interfaces for the user to select corresponding parameters and display corresponding test data to the user. Mobile devices include cellular telephones, personal Digital Assistants (PDAs), smart phones, laptops, tablets, netbooks, notebook computers, personal computers, consumer electronics (e.g., ipads), wearable devices (such as smartwatches or smart clothing), and the like. The user can retrieve and browse the existing test data through the mobile device after logging in.

On the server side, time domain data is received from the measurement preamble and stored locally for access by the client. FIG. 1 illustrates an example diagram of test data collected from a front end in accordance with an embodiment of the present invention. During testing, the testing front end can directly record the collected original time signals on a memory (for example, a computer hard disk), and continuously record data waveforms to the computer hard disk as data files for various subsequent processing.

The following describes specific embodiments of the present invention in detail with reference to the drawings. FIG. 2 illustrates an exemplary flowchart of a process for processing vehicle NVH performance data, in accordance with one embodiment of the present invention.

FIG. 2 illustrates an exemplary flowchart of a process 200 for processing vehicle NVH performance data, in accordance with one embodiment of the present invention. The process shown in fig. 2 is performed at the client. The client is operatively connected to the memory and has a display for displaying a user interface.

Process 200 begins at step 201. In step 201, a user selection of a test specimen vehicle and test conditions is received via a client interface. For example, the test conditions may be defined by a plurality of parameters, which may include acceleration, idle and coasting, measured locations in the vehicle, and parameters related to the test item, among others.

Under acceleration conditions, the vehicle can be continuously accelerated, and an engine tachometer is connected to record vibration and/or noise signals in the vehicle. For example, vibration and/or noise may be measured at an RPM (i.e., number of revolutions per minute) of 1000, 1500, 2000, 2500, …, etc. Under the sliding working condition, the sensor is placed at different positions in the vehicle, and vibration and/or noise signals at different positions are measured and recorded. Under such conditions, the vehicle travels on asphalt roads of different textures, and the effect of road noise on the noise in the vehicle needs to be measured. Under idle conditions, the transmission is placed in neutral, the microphones are placed at different positions in the vehicle, and vibration and/or noise signals at different positions are measured and recorded.

Referring to FIG. 3, an operator interface for a user to select a test specimen vehicle, test conditions, etc. is shown in accordance with one embodiment of the present invention. As shown in FIG. 3, the user interface sequentially lists options, numbers, vehicle Identification Number (VIN), project, construction phase, type, model code, engine type, gearbox, full throttle acceleration (WOT), coast (Coasting), idle (Idle), test date, test phase, remarks, and the like. The user may select a test sample vehicle and test conditions by clicking on the option of the desired vehicle to change "N" to "Y".

Furthermore, once the collected test data is stored in memory, the client cannot alter or delete the test data stored in memory, but can directly or indirectly access the test data in memory. The memory may receive test data from a plurality of clients performing vehicle tests.

In step 202, measurement data relating to a user selected test specimen vehicle and test conditions is retrieved from a memory storing vehicle NVH performance data. This test data is also received by the client in the form of a time domain signal. The clients have different access rights to the memory.

In step 203, a Fast Fourier Transform (FFT) is performed on the retrieved measurement data to obtain processed data. By FFT conversion, the time domain signal becomes a frequency domain signal. Fig. 4A-4C illustrate examples of frequency domain signals, which are described below.

At step 204, the processed data is graphically displayed on the client interface. Further, graphically displaying the processed data on the client interface may include: displaying controls on a user interface for selecting one or more of the plurality of parameters; and based on the user selection of the control, graphically displaying, on the user interface, processed data corresponding to the user-selected control. Process 200 then ends.

Referring to fig. 4A-4C, processed test signals for different test specimen vehicles and test conditions, respectively, are shown.

FIG. 4A shows a graphical display of NVH performance data for a selected vehicle under WOT conditions. As shown in FIG. 4A, one or more test vehicles and associated parameters selected in the user interface shown in FIG. 3 are shown at the right portion of the interface, e.g., items, orders, vehicle identification codes, locations, etc. are shown in sequence in FIG. 3. For example, three options are given in the "order" box, two-order (indicating 4-cylinder engine second-order noise), four-order (indicating double the second-order noise), and whole vehicle. For example, the position of the sensor in the vehicle in the XYZ three-dimensional coordinate system is given in the "position" box, where "FL" indicates front left, "FR" indicates rear left, "RL" indicates rear left, "RR" indicates rear right, "SR" indicates seat rail, "SW" indicates steering wheel, X indicates direction from head to tail, Y indicates direction from main drive to sub drive, Z indicates direction from chassis to roof, "inner" indicates passenger inner ear, "outer" indicates passenger outer ear, "AC off" indicates air conditioning off, "AC on" indicates air conditioning on, "over all" indicates overall noise. As shown in fig. 4A, a vibration/noise curve with RPM is shown at the left part of the interface.

FIG. 4B illustrates a graphical display interface of NVH performance data for a selected vehicle during a coasting condition. As shown in fig. 4B, a vibration/noise curve as a function of RPM (i.e., number of rotations per minute) is shown at the left portion of the interface.

FIG. 4C illustrates a graphical display of NVH performance data for a selected vehicle during idle conditions. As shown in fig. 4C, a vibration/noise curve as a function of frequency (Hz) is shown at the left part of the interface.

At a server hosting a memory, measurement data based on the vehicle NVH performance data of the powertrain system is collected in real time from the test front end and the collected test data is stored in the memory in the form of a time domain signal. The server itself may also have a processor and a display to retrieve and graphically display the test data as a client. Test data collected from the test front-end is stored remotely into the memory, either directly or indirectly through a wired or wireless connection.

Fig. 5 illustrates an exemplary configuration of a computing device 1200 capable of implementing embodiments in accordance with the present disclosure.

Computing device 1200 is an example of a hardware device that can employ the above aspects of the disclosure. Computing device 1200 may be any machine configured to perform processing and/or calculations. Computing device 1200 may be, but is not limited to, a workstation, a server, a desktop computer, a laptop computer, a tablet computer, a Personal Data Assistant (PDA), a smart phone, an in-vehicle computer, or a combination thereof.

As shown in fig. 5, computing device 1200 may include one or more elements that may be connected to or in communication with bus 1202 via one or more interfaces. The bus 1202 may include, but is not limited to, an industry standard architecture (Industry Standard Architecture, ISA) bus, a micro channel architecture (Micro Channel Architecture, MCA) bus, an Enhanced ISA (EISA) bus, a Video Electronics Standards Association (VESA) local bus, and a Peripheral Component Interconnect (PCI) bus. Computing device 1200 may include, for example, one or more processors 1204, one or more input devices 1206, and one or more output devices 1208. The one or more processors 1204 may be any kind of processor and may include, but are not limited to, one or more general purpose processors or special purpose processors (such as special purpose processing chips). The processor 1204 may be configured to implement, for example, a process of processing vehicle NVH performance data according to an embodiment of the invention. Input device 1206 may be any type of input device capable of inputting information to a computing device, and may include, but is not limited to, a mouse, keyboard, touch screen, microphone, and/or remote controller. The output device 1208 may be any type of device capable of presenting information and may include, but is not limited to, a display, speakers, video/audio output terminals, vibrators, and/or printers.

The computing device 1200 may also include or be connected to a non-transitory storage device 1214, which non-transitory storage device 1214 may be any storage device that is non-transitory and that may enable data storage, and may include, but is not limited to, disk drives, optical storage devices, solid state memory, floppy disks, flexible disks, hard disks, magnetic tape, or any other magnetic medium, compact disk or any other optical medium, cache memory and/or any other memory chip or module, and/or any other medium from which a computer may read data, instructions, and/or code. Computing device 1200 may also include Random Access Memory (RAM) 1210 and Read Only Memory (ROM) 1212. The ROM 1212 may store programs, utilities or processes to be executed in a non-volatile manner. The RAM 1210 may provide volatile data storage and stores instructions related to the operation of the computing device 1200. The computing device 1200 may also include a network/bus interface 1216 coupled to the data link 1218. The network/bus interface 1216 can be any kind of device or system capable of enabling communication with external equipment and/or networks, and can include, but is not limited to, modems, network cards, infrared communication devices, wireless communication devices, and/or chipsets (such as bluetooth ^TM devices, 802.11 devices, wiFi devices, wiMax devices, cellular communication facilities, etc.).

The present disclosure may be implemented as any combination of apparatuses, systems, integrated circuits, and computer programs on a non-transitory computer readable medium. One or more processors may be implemented as an Integrated Circuit (IC), application Specific Integrated Circuit (ASIC), or large scale integrated circuit (LSI), system LSI, super LSI, or ultra LSI assembly that performs some or all of the functions described in this disclosure.

The present disclosure includes the use of software, applications, computer programs, or algorithms. The software, application, computer program or algorithm may be stored on a non-transitory computer readable medium to cause a computer, such as one or more processors, to perform the steps described above and depicted in the drawings. For example, one or more memories may store software or algorithms in executable instructions and one or more processors may associate a set of instructions to execute the software or algorithms to provide various functions in accordance with the embodiments described in this disclosure.

The software and computer programs (which may also be referred to as programs, software applications, components, or code) include machine instructions for a programmable processor, and may be implemented in a high-level procedural, object-oriented, functional, logical, or assembly or machine language. The term "computer-readable medium" refers to any computer program product, apparatus or device, such as magnetic disks, optical disks, solid state memory devices, memory, and Programmable Logic Devices (PLDs), for providing machine instructions or data to a programmable data processor, including computer-readable media that receives machine instructions as a computer-readable signal.

The subject matter of the present disclosure is provided as examples of apparatuses, systems, methods, and programs for performing the features described in the present disclosure. Other features or variations in addition to those described above are contemplated. It is contemplated that the implementation of the components and functions of the present disclosure may be accomplished with any emerging technology that may replace any of the above-described implementation technologies.

Claims

1. A method for processing vehicle NVH performance data, comprising:

Receiving user selections of a test sample vehicle and test conditions via a client interface;

Retrieving measurement data relating to the user selected test sample vehicle and test conditions from a memory storing vehicle NVH performance data;

performing a fast fourier transform FFT on the retrieved measurement data to obtain processed data; and

The processed data is graphically displayed on the client interface.

2. The method of claim 1, wherein the test conditions are defined by a plurality of parameters including acceleration, idle and coast, measured position in the vehicle, and parameters related to the test item.

3. The method of claim 1, further comprising:

collecting measurement data of NVH performance data of the whole vehicle based on the power train from a testing front end in real time; and

The collected test data is stored in the memory in the form of a time domain signal.

4. A method according to claim 3, wherein the test data collected from the test front-end is stored remotely into the memory, either directly or indirectly through a wired or wireless connection.

5. The method of claim 2, wherein graphically displaying the processed data on the client interface comprises:

Displaying controls on a user interface for selecting one or more of the plurality of parameters; and

Based on the user selection of the control, the processed data corresponding to the user-selected control is graphically displayed on the user interface.

6. The method of claim 1, wherein the test data stored in the memory cannot be altered or deleted from the client; and

The memory receives test data from a plurality of clients performing vehicle tests, wherein the plurality of clients have different access rights to the memory.

7. A computing device, comprising:

A display configured to display a user interface;

a memory having instructions stored thereon; and

A processor configured to execute instructions stored on the memory to perform the method of any one of claims 1 to 6.

8. A computer-readable storage medium comprising computer-executable instructions that, when executed by one or more processors, cause the one or more processors to perform the method of any of claims 1-6.