CN210400860U - Electric automobile EPB noise test system - Google Patents
Electric automobile EPB noise test system Download PDFInfo
- Publication number
- CN210400860U CN210400860U CN201920677066.2U CN201920677066U CN210400860U CN 210400860 U CN210400860 U CN 210400860U CN 201920677066 U CN201920677066 U CN 201920677066U CN 210400860 U CN210400860 U CN 210400860U
- Authority
- CN
- China
- Prior art keywords
- epb
- headrest
- noise
- pxle
- control cabinet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 32
- 230000005236 sound signal Effects 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 abstract description 13
- 230000008569 process Effects 0.000 abstract description 9
- 238000013461 design Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000004891 communication Methods 0.000 abstract description 2
- 238000012545 processing Methods 0.000 description 9
- 238000001514 detection method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
Images
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Abstract
The utility model discloses an electric automobile EPB noise test system, microphone sensor are equipped with a plurality ofly and install the sound collection point on electric automobile respectively, every microphone sensor output sound signal to NI collection card, NI collection card carries sound signal to NI-PXLE control box, the power supply ware is connected to NI-PXLE control box power end, and signal output part passes through serial ports communication connection host computer LabVIEW platform. The utility model discloses can test the noise of different kinds of EPB during operation, whether evaluate its measuring noise psychology parameter and accord with enterprise design standard, the test hardware product investment cost that has significantly reduced reduces the noise that the EPB working process produced, improves production efficiency and takes the travelling comfort.
Description
Technical Field
The utility model belongs to the technical field of electric automobile EPB noise test and specifically relates to an electric automobile EPB noise test system based on LabVIEW is related to.
Background
In recent years, under the dual influence of national policies and market stimulation, the market sales volume of domestic new energy automobiles presents a rapidly increasing posture, and the requirements on the technology and performance of pure electric vehicles are higher and higher. Due to the fact that EPB is easy and convenient to operate and front row space is released, manual parking in the pure electric vehicle market is gradually replaced by electronic parking. Compared with the traditional gasoline vehicle, the pure electric vehicle has no noise caused by the operation of an engine, the driving of the vehicle has high silence for a driver, and the targeted noise is generated. Such as during vehicle braking, the noise generated by the EPB during operation is quite noticeable. The main reason for this is that EPB is the only sound source during parking and the EPB operates with a relatively sharp noise, which may cause discomfort to the driver if the noise is too great. Therefore, in the vehicle design and development stage, the EPB noise problem needs to be properly solved, and the customer complaint problem caused by future use of the vehicle is avoided.
At present, EPB noise detection only detects a single component, and is not installed on a whole vehicle to test noise in a cab. Because the EPB is arranged on the hub of the wheel, the noise felt by an EPB body and the noise felt by passengers in the vehicle can meet the customer requirements only through enterprise design standards, but the EPB noise test in the current market needs professional imported equipment for detection, the cost is high, and the detection cost is too high, so that the test system based on the LabVIEW virtual instrument is provided, the noise of different types of EPBs during working can be tested, whether the measured noise psychological parameters meet the enterprise design standards or not is evaluated, the investment cost of testing hardware products is greatly reduced, the noise generated in the working process of the EPB is reduced, and the production efficiency and the comfort are improved.
Disclosure of Invention
The utility model provides a vehicle carries out the parking in-process through EPB, has the great problem of noise, through establishing EPB noise test system, carries out noise test and appraises the test result to EPB near field and driver's cabin interior key point, reduces the system of driver's cabin interior noise.
In order to realize the purpose, the utility model discloses a technical scheme be:
a microphone sensor is provided with a plurality of sound collection points which are respectively installed on an electric automobile, each microphone sensor outputs a sound signal to an NI collection card, the NI collection card transmits the sound signal to an NI-PXLE control cabinet, the power supply end of the NI-PXLE control cabinet is connected with a power supply device, and the signal output end of the NI-PXLE control cabinet is connected with an upper computer LabVIEW platform through serial port communication.
The system is also provided with a rotating speed sensor which is arranged on the inner side of the EPB and used for measuring the working rotating speed of the EPB, the rotating speed sensor outputs a rotating speed signal to an NI acquisition card, and the NI acquisition card transmits the rotating speed signal to the NI-PXLE control cabinet.
The sound collection points comprise positions of a driver seat headrest, a co-driver seat headrest and a right rear passenger seat headrest of the seat.
The microphone sensor arranged on the headrest is clamped on the headrest through the bracket, wherein the mounting position of the headrest of the driver seat is the middle of the headrest, the mounting position of the headrest of the co-driver seat is the middle of the right side of the headrest, and the mounting position of the headrest of the right back passenger seat is the middle of the left side of the headrest.
The sound collection point comprises at the near field of the EPB.
The microphone sensor mounted at the near field of the EPB is fixed by a bracket and has a distance of 4-6cm from the EPB.
The NI-PXLE control cabinet is connected with an upper computer through a USB interface, and the NI acquisition card is embedded in the NI-PXLE control cabinet.
The utility model discloses can test the noise of different kinds of EPB during operation, whether evaluate its measuring noise psychology parameter and accord with enterprise design standard, the test hardware product investment cost that has significantly reduced reduces the noise that the EPB working process produced, improves production efficiency and takes the travelling comfort.
Drawings
The following is a brief description of the contents expressed by each figure in the specification of the present invention:
FIG. 1 is a schematic block diagram of an EPB noise testing system of an electric vehicle.
Detailed Description
The following description of the embodiments with reference to the drawings is provided to explain the embodiments of the present invention in further detail, such as the shapes and structures of the components, the mutual positions and connection relationships among the components, the functions and working principles of the components, the manufacturing process, and the operation and use method, etc., so as to help those skilled in the art to understand the concept and technical solutions of the present invention more completely, accurately and deeply.
The electric vehicle EPB noise test system based on LabVIEW mainly comprises a sensor, a data acquisition card specially configured for NI, a control cabinet, an upper computer provided with LabVIEW software and a power converter. The sensor mainly comprises a microphone sensor and a rotation speed sensor, the microphone sensor is connected with the rotation speed sensor through a PXI-6122 data acquisition card, an ICP microphone sensor is connected with a PXIe-4499 acquisition card, each acquisition card is embedded on a PXIe-1082 control cabinet, the control cabinet is connected with a computer through a USB interface, and each sensor is connected with a signal processing device and can shield interference signals.
ICP microphone sensors are respectively arranged at near fields of the right ear of a driver, the right ear of a co-driver, the left ear of a right rear passenger and an EPB, and rotating speed sensors are arranged on an EPB motor. The calibrator calibrates the ICP microphone and the rotation speed sensor respectively before testing.
Specifically, as shown in fig. 1, the microphone sensors are clamped at the middle of the right side of the driver headrest, the middle of the right side of the passenger headrest and the middle of the left side of the right rear passenger headrest respectively through brackets, the microphone sensors are additionally installed at near fields on an EPB of the electric automobile respectively through brackets, the microphone sensors and the EPB are kept 5cm, and the rotating speed sensors are installed inside the EPB to measure the working rotating speed; respectively accessing microphone sensors of a driver, a co-driver and a right rear passenger headrest into channels 1 to 3 of an NI acquisition card, and accessing a near-field microphone sensor of an EPB on an electric automobile hub into channels 4 and 5 of the NI acquisition card; a rotating speed sensor for measuring the EPB is connected to an analog input 1 channel of another NI acquisition card; the NI acquisition card is directly embedded on the NI-PXLE control cabinet, and the NI-PXLE control cabinet is connected with the upper computer through the USB interface; the power supply supplies power to the NI-PXLE control cabinet. LabVIEW software is installed in the upper computer to compile a test program of the EPB noise of the electric automobile.
The functional module of the upper computer mainly comprises a data processing system and a human-computer interaction interface, wherein the data processing system comprises a data acquisition module, a data processing module and a data storage module, each sensor needs to carry out parameter setting of different models after being connected to the test system, then is calibrated by a calibrator, and carries out data acquisition by the data acquisition module after the calibration is finished, and the sensor respectively obtains the rotating speed of the EPB working process and the sound pressure level and sharpness information on each microphone sensor channel by the acquired analog voltage signal through the data processing module; the EPB rotating speed information obtained by the data processing module and noise sound pressure level and sharpness values of EPB near fields in a cab are sent to a human-computer interaction interface for displaying, and whether each measured value meets the design requirements of enterprises or not is judged; if the EPB rotating speed information after data processing and the noise sound pressure level and the sharpness value of the EPB near field in the cab meet the enterprise standard, the display of the human-computer interface is qualified; if the EPB does not meet the enterprise standard, the display test of the human-computer display interface is unqualified, and the EPB needs to be adjusted or re-detected after the piece is replaced. This test system can directly judge whether electric automobile EPB's noise satisfies the enterprise's design requirement, improves production efficiency, reduces the interior noise of driver's cabin, improves driver's riding comfort.
The specific test flow is as follows: the sensors are arranged at the designated position of the whole vehicle, the electric vehicle respectively performs test measurement on the opening and closing processes of the EPB on the hub, and the sound pressure level and the sharpness of the cab and the EPB near field in the whole process are judged to be enough to meet the design requirements of enterprises. And testing the opening and closing processes of each EPB for three times to ensure that the error value of each finished process is less than 2 percent.
Noise of the electric automobile EPB working process is collected through the control cabinet and the upper computer, and the measured sound pressure level and the sharpness of each sensor are displayed through data processing to compare whether enterprise standards are met. The utility model discloses an advantage: the application range is wide, and different types of EPBs can be tested; the hardware cost is low, the reliability is high, the method can be realized by only adopting an NI-PXLE control cabinet, an acquisition card, an upper computer and a sensor, and the reliability is high due to the adoption of a mature virtual instrument technology; the operation is easy, the interface can display data in real time only by compiling a corresponding LabVIEW application program, and whether the noise value of the EPB meets the enterprise standard or not is judged through data processing, so that the production efficiency is improved.
The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above-mentioned manner, and various insubstantial improvements can be made without modification to the method and technical solution of the present invention, or the present invention can be directly applied to other occasions without modification, all within the scope of the present invention.
Claims (7)
1. The utility model provides an electric automobile EPB noise test system which characterized in that: the system comprises a plurality of microphone sensors, an NI acquisition card, a NI-PXLE control cabinet, a power supply end and a signal output end, wherein the microphone sensors are provided with a plurality of sound acquisition points which are respectively installed on an electric automobile, each microphone sensor outputs a sound signal to the NI acquisition card, the NI acquisition card transmits the sound signal to the NI-PXLE control cabinet, the power supply end of the NI-PXLE control cabinet is connected with a power supply device, and the signal output end is connected with.
2. The EPB noise testing system of claim 1, wherein: the system is also provided with a rotating speed sensor which is arranged on the inner side of the EPB and used for measuring the working rotating speed of the EPB, the rotating speed sensor outputs a rotating speed signal to an NI acquisition card, and the NI acquisition card transmits the rotating speed signal to the NI-PXLE control cabinet.
3. The EPB noise testing system of the electric vehicle as claimed in claim 1 or 2, wherein: the sound collection points comprise positions of a driver seat headrest, a co-driver seat headrest and a right rear passenger seat headrest of the seat.
4. The EPB noise testing system of claim 3, wherein: the microphone sensor arranged on the headrest is clamped on the headrest through the bracket, wherein the mounting position of the headrest of the driver seat is the middle of the headrest, the mounting position of the headrest of the co-driver seat is the middle of the right side of the headrest, and the mounting position of the headrest of the right back passenger seat is the middle of the left side of the headrest.
5. The EPB noise testing system of claim 1, 2 or 4, wherein: the sound collection point comprises at the near field of the EPB.
6. The EPB noise testing system of claim 5, wherein: the microphone sensor mounted at the near field of the EPB is fixed by a bracket and has a distance of 4-6cm from the EPB.
7. The EPB noise testing system of the electric vehicle as claimed in claim 1 or 6, wherein: the NI-PXLE control cabinet is connected with an upper computer through a USB interface, and the NI acquisition card is embedded in the NI-PXLE control cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920677066.2U CN210400860U (en) | 2019-05-13 | 2019-05-13 | Electric automobile EPB noise test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920677066.2U CN210400860U (en) | 2019-05-13 | 2019-05-13 | Electric automobile EPB noise test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210400860U true CN210400860U (en) | 2020-04-24 |
Family
ID=70345478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920677066.2U Active CN210400860U (en) | 2019-05-13 | 2019-05-13 | Electric automobile EPB noise test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210400860U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112254805A (en) * | 2020-10-22 | 2021-01-22 | 奇瑞新能源汽车股份有限公司 | In-vehicle sound quality testing device and method |
| CN112729861A (en) * | 2020-12-07 | 2021-04-30 | 万向钱潮（上海）汽车系统有限公司 | Device for automatically measuring noise of electronic parking calipers |
| CN113844875A (en) * | 2021-11-03 | 2021-12-28 | 江苏昊瑞柯自动化系统有限公司 | EPB parking noise on-line testing automation equipment |
-
2019
- 2019-05-13 CN CN201920677066.2U patent/CN210400860U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112254805A (en) * | 2020-10-22 | 2021-01-22 | 奇瑞新能源汽车股份有限公司 | In-vehicle sound quality testing device and method |
| CN112254805B (en) * | 2020-10-22 | 2022-08-30 | 奇瑞新能源汽车股份有限公司 | Method for testing sound quality in vehicle |
| CN112729861A (en) * | 2020-12-07 | 2021-04-30 | 万向钱潮（上海）汽车系统有限公司 | Device for automatically measuring noise of electronic parking calipers |
| CN113844875A (en) * | 2021-11-03 | 2021-12-28 | 江苏昊瑞柯自动化系统有限公司 | EPB parking noise on-line testing automation equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210400860U (en) | Electric automobile EPB noise test system | |
| CN108846147B (en) | Method for calculating and analyzing contribution of vibration excitation systems during vehicle working | |
| US20160343180A1 (en) | Automobiles, diagnostic systems, and methods for generating diagnostic data for automobiles | |
| WO2019183991A1 (en) | Engine bench calibration method based on simulation operation of whole vehicle | |
| CN102463857B (en) | Apparatus for recognizing position sensor in tire pressure monitoring system and method thereof | |
| CN102963219A (en) | TPMS apparatus with diagnosis and control method | |
| CN201501359U (en) | Vehicle body control system based on CAN bus and LIN bus | |
| CN112611569B (en) | Intelligent diagnosis method and system for in-vehicle shaking problem of automobile start-stop working condition | |
| CN215374510U (en) | Road test system for automobile brake noise | |
| CN108871791B (en) | Automobile starting noise testing device and testing method | |
| CN112254805B (en) | Method for testing sound quality in vehicle | |
| CN210638902U (en) | NVH testing device of fuel cell vehicle | |
| CN112622535A (en) | Tire pressure monitoring method and system for electric vehicle | |
| CN212275245U (en) | Single footboard technical test device of new forms of energy car | |
| CN114483559B (en) | Noise risk assessment method for electric air conditioner compressor | |
| CN111855229A (en) | Positioning evaluation analysis method for vehicle abnormal sound | |
| CN202615231U (en) | Conversion adapter for vehicular diagnosis connection | |
| CN109307549B (en) | Method and device for determining main transmission path of tire cavity sound and automobile | |
| CN107239067A (en) | Vehicle different sound diagnostic device and diagnostic method based on mobile intelligent terminal | |
| CN203259246U (en) | Car noise flexible testing system | |
| CN109883589B (en) | New energy automobile driving shaft torque testing device and method | |
| CN114889370A (en) | Sensor for measuring real-time height of tire and measuring method thereof | |
| CN107878365A (en) | A kind of vehicle-state record system for monitoring vehicle different sound | |
| CN211347400U (en) | Measurement device for road surface peak value brake force coefficient before motorcycle ABS test | |
| CN110194035B (en) | Tire pressure display method and tire pressure display device of low-profile automobile |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 241000 No. 226 Jin Hua Nan Road, Yijiang hi tech Industrial Development Zone, Anhui, Wuhu Patentee after: Chery New Energy Automobile Co.,Ltd. Address before: 241000 No. 226 Jin Hua Nan Road, Yijiang hi tech Industrial Development Zone, Anhui, Wuhu Patentee before: CHERY NEW ENERGY AUTOMOBILE TECHNOLOGY Co.,Ltd. |