CN116296462A - Whole vehicle comprehensive performance test method and system, data acquisition device and storage medium - Google Patents
Whole vehicle comprehensive performance test method and system, data acquisition device and storage medium Download PDFInfo
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Abstract
The disclosure relates to a method and a system for testing overall performance of a whole vehicle, a data acquisition device and a storage medium. The method comprises the following steps: the data acquisition device acquires various signals and data, wherein the various signals and data comprise sensor signals provided by a test sensor, whole vehicle CAN data provided by a CAN bus, positioning signals provided by a positioning device and trigger signals provided by a trigger; the data acquisition device provides the various signals and data to the performance evaluation device, wherein the performance evaluation device is configured to perform data analysis according to the various signals and data provided by the data acquisition device, evaluate the dynamic comprehensive test result of the vehicle and provide optimization measures according to the test result. The method and the device can comprehensively evaluate each performance of the whole vehicle in the vehicle-sampling stage, and optimize the performance level of the whole vehicle.
Description
Technical Field
The disclosure relates to the technical field of automobile testing, in particular to a method and a system for testing overall performance of a whole automobile, a data acquisition device and a storage medium.
Background
With the development of the commercial vehicle industry, the performance level of vehicles is increasingly receiving attention from customers. The performance of the whole vehicle is the combination of the performance such as dynamic performance, economy, NVH (Noise, vibration, harshness, noise, vibration and harshness), braking, emission, thermal management and the like, and the performance is mutually influenced and restricted, so that the performance is required to be comprehensively managed, optimized and improved as a host factory.
Disclosure of Invention
The inventors found through research that: the test means of the related technology can only perform test analysis aiming at single performance, so that various test data cannot be synchronized, the data quality is low, the test data cannot be deeply analyzed, and the test requirement of optimizing and improving the performance of the whole vehicle cannot be met.
In view of at least one of the above technical problems, the present disclosure provides a method and a system for testing overall performance of a whole vehicle, a data acquisition device and a storage medium, which can comprehensively evaluate each performance of the whole vehicle in a vehicle-sampling stage, and optimize the performance level of the whole vehicle.
According to one aspect of the present disclosure, there is provided a method for testing overall performance of a whole vehicle, including:
the data acquisition device acquires various signals and data, wherein the various signals and data comprise sensor signals provided by a test sensor, whole vehicle CAN data provided by a CAN (Controller Area Network ) bus, positioning signals provided by a positioning device and trigger signals provided by a trigger;
The data acquisition device provides the various signals and data to the performance evaluation device, wherein the performance evaluation device is configured to perform data analysis according to the various signals and data provided by the data acquisition device, evaluate the dynamic comprehensive test result of the vehicle and provide optimization measures according to the test result.
In some embodiments of the present disclosure, the method for testing overall performance of a whole vehicle further includes:
the data acquisition device derives various signals and data acquired into data in a preset format, wherein the data in the preset format changes along with time, the time interval is determined by sampling frequency or the deriving rate is set according to input, and the performance evaluation device is configured to analyze and process the data according to the data in the preset format and draw a relation curve of each signal changing along with time domain.
In some embodiments of the present disclosure, the data acquisition device acquiring various signals and data includes at least one of the following steps, wherein:
receiving at least one of a trigger signal in the form of a digital signal input by the trigger and meter data in the form of a digital signal input by the meter;
receiving at least one of vibration acceleration in the form of a current signal input by a vibration acceleration sensor and a sound signal in the form of a current signal input in a microphone;
Receiving at least one of CAN data of the whole vehicle, positioning signals input by a positioning device and temperature data input by a temperature sensor;
receiving at least one of vibration acceleration in the form of a voltage signal input by a vibration acceleration sensor, a pressure signal in the form of a voltage signal input by a pressure sensor, a force signal in the form of a voltage signal input by a force sensor, a stress signal in the form of a voltage signal input by a stress sensor, and a displacement signal in the form of a voltage signal input by a displacement sensor.
In some embodiments of the present disclosure, the data acquisition device acquiring various signals and data includes at least one of the following steps, wherein:
receiving a positioning signal input by a positioning device, and analyzing the positioning signal through a communication protocol to obtain the speed and the driving distance of the whole vehicle;
and receiving the whole CAN data through the whole CAN bus interface, analyzing the whole CAN data through a communication protocol, and reading at least one signal of battery output voltage, battery output current, motor rotation speed, motor torque, motor power, air cylinder air pressure and brake pedal trigger signals.
In some embodiments of the present disclosure, the method for testing overall performance of a whole vehicle further includes:
The data acquisition device determines a test object, a test item, a test working condition and a test measuring point according to the input of a user;
the data acquisition device selects all channels used in the data acquisition device according to the input of a user, and all the channels correspond to the corresponding sensors to perform channel setting and debugging;
the data acquisition device sets at least one of a sensor type, a signal calibration value, a signal unit and a signal direction according to user input.
In some embodiments of the present disclosure, the method for testing overall performance of a whole vehicle further includes at least one of the following steps, wherein:
the data acquisition device acquires and examines each signal data before the test;
the data acquisition device is used for real-time monitoring the signal value of each measuring point and the curve relation of each signal along with time change in the test according to the time domain data of the required channel signal which is input by a user and setting proper acquisition frequency and acquisition time;
and after the test is finished, the data acquisition device performs the usability evaluation on the acquired data signals.
According to another aspect of the present disclosure, there is provided a data acquisition device comprising:
the data acquisition unit is configured to acquire various signals and data, wherein the various signals and data comprise sensor signals provided by a test sensor, whole car CAN data provided by a CAN bus, positioning signals provided by a positioning device and trigger signals provided by a trigger;
The data providing unit is configured to provide the various signals and data to the performance evaluation device, wherein the performance evaluation device is configured to perform data analysis according to the various signals and data provided by the data acquisition device, evaluate the dynamic comprehensive test result of the vehicle and provide optimization measures according to the test result.
In some embodiments of the present disclosure, the data acquisition unit includes at least one of a digital signal module, a current signal module, a CAN communication module, and a voltage signal module, wherein:
a digital signal module configured to receive at least one of a trigger signal in the form of a digital signal input by the trigger and flow meter data in the form of a digital signal input by the flow meter;
a current signal module configured to receive at least one of a vibration acceleration in the form of a current signal input from the vibration acceleration sensor, and a sound signal in the form of a current signal input from the microphone;
the CAN communication module is configured to receive at least one of the whole vehicle CAN data, a positioning signal input by the positioning device and temperature data input by the temperature sensor;
the voltage signal module is configured to receive at least one of vibration acceleration in the form of a voltage signal input by the vibration acceleration sensor, a pressure signal in the form of a voltage signal input by the pressure sensor, a force signal in the form of a voltage signal input by the force sensor, a stress signal in the form of a voltage signal input by the stress sensor, and a displacement signal in the form of a voltage signal input by the displacement sensor.
In some embodiments of the present disclosure, the data acquisition device is configured to perform operations for implementing the method for testing overall performance of a vehicle according to any one of the foregoing embodiments.
According to another aspect of the present disclosure, there is provided a data acquisition device comprising:
a memory configured to store instructions;
and the processor is configured to execute the instructions, so that the data acquisition device executes the operation of realizing the method for testing the comprehensive performance of the whole vehicle according to any one of the embodiments.
According to another aspect of the present disclosure, there is provided a vehicle integrated performance test system, including:
a test sensor configured to provide a sensor signal to the data acquisition device;
a CAN bus configured to provide the whole vehicle CAN data to the data acquisition device;
a positioning device configured to provide a positioning signal to the data acquisition device;
the trigger is configured to send a trigger signal to the data acquisition device and trigger the data acquisition device to start acquiring data;
the data acquisition device is the data acquisition device according to any one of the embodiments;
the performance evaluation device is configured to perform data analysis according to various signals and data provided by the data acquisition device, evaluate the dynamic comprehensive test result of the vehicle, and propose optimization measures according to the test result.
In some embodiments of the present disclosure, the data acquisition device is configured to derive the various signals and data acquired into data in a predetermined format, wherein the data in the predetermined format varies with time, the time interval being determined by the sampling frequency or the derived rate being set according to the input.
In some embodiments of the present disclosure, the performance evaluation device is configured to perform data analysis and processing according to data in a predetermined format, and draw a relationship curve of each signal changing with time domain.
In some embodiments of the disclosure, the positioning device is disposed at a top end of the vehicle.
In some embodiments of the present disclosure, the positioning device is configured to transmit the positioning signal to the data acquisition device over a CAN bus; the data acquisition device is configured to analyze the positioning signals through a communication protocol to obtain the speed and the driving distance of the whole vehicle.
In some embodiments of the present disclosure, the positioning signal includes at least one of a speed signal, a distance signal, an altitude signal, and a heading signal.
In some embodiments of the present disclosure, the overall vehicle performance test system is configured to perform at least one of a dynamic performance test, an economic performance test, a noise, vibration and harshness performance test, a braking energy recovery performance test, a braking performance test, and a thermal management performance test.
In some embodiments of the present disclosure, the test sensor is configured to output at least one of a voltage signal, a current signal, and a digital signal.
In some embodiments of the present disclosure, the test sensor comprises at least one of a vibration acceleration sensor, a microphone, a pull-wire displacement sensor, a force sensor, a stress sensor, a pressure sensor, a thermocouple, and a flow meter.
In some embodiments of the present disclosure, in a case where the vehicle integrated performance test system is configured to perform a brake energy recovery integrated performance test, the test sensor includes at least one of a pedal force sensor, a return straight pedal displacement sensor, a front axle air pressure sensor, and a rear axle air pressure sensor.
According to another aspect of the disclosure, there is provided a computer readable storage medium, where the computer readable storage medium stores computer instructions that, when executed by a processor, implement the method for testing overall performance of a vehicle according to any of the embodiments above.
The method and the device can comprehensively evaluate each performance of the whole vehicle in the vehicle-sampling stage, and optimize the performance level of the whole vehicle.
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In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.
Fig. 1 is a schematic diagram of some embodiments of a method for testing overall performance of a whole vehicle according to the present disclosure.
FIG. 2 is a schematic diagram of other embodiments of the overall performance testing method of the present disclosure.
FIG. 3 is a schematic diagram of some embodiments of the overall vehicle performance testing system of the present disclosure.
FIG. 4 is a schematic diagram of other embodiments of the overall vehicle performance testing system of the present disclosure.
Fig. 5 is a schematic diagram of the installation of a sensor in some embodiments of the present disclosure.
Fig. 6 is a schematic diagram of a data acquisition interface in some embodiments of the present disclosure.
Fig. 7 is a schematic diagram of test data export EXCEL format in some embodiments of the present disclosure.
Fig. 8 is a schematic diagram of test result analysis in some embodiments of the present disclosure.
Fig. 9 is a schematic diagram of some embodiments of a data acquisition device of the present disclosure.
Fig. 10 is a schematic structural view of other embodiments of the data acquisition device of the present disclosure.
FIG. 11 is a schematic diagram of yet other embodiments of the overall performance testing system of the whole vehicle of the present disclosure.
Detailed Description
The following description of the technical solutions in the embodiments of the present disclosure will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are only some embodiments of the present disclosure, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses. Based on the embodiments in this disclosure, all other embodiments that a person of ordinary skill in the art would obtain without making any inventive effort are within the scope of protection of this disclosure.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless it is specifically stated otherwise.
Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
Fig. 1 is a schematic diagram of some embodiments of a method for testing overall performance of a whole vehicle according to the present disclosure. Preferably, the embodiment can be executed by the data acquisition device or the integrated performance test system of the whole vehicle. The method comprises at least one of steps 100 to 200, wherein:
And 100, the data acquisition device acquires various signals and data, wherein the various signals and data comprise sensor signals provided by a test sensor, whole vehicle CAN data provided by a CAN bus, positioning signals provided by a positioning device and trigger signals provided by a trigger.
In some embodiments of the present disclosure, step 100 may include at least one of steps 110 to 140, wherein:
step 110 receives at least one of a trigger signal in the form of a digital signal input by a trigger and meter data in the form of a digital signal input by a meter.
In some embodiments of the present disclosure, the trigger signal in the form of a digital signal of the trigger input may be a trigger signal in the form of a switching value signal.
Step 120, receiving at least one of vibration acceleration in the form of a current signal input from a vibration acceleration sensor and a sound signal in the form of a current signal input from a microphone.
And 130, receiving at least one of the CAN data of the whole vehicle, the positioning signals input by the positioning device and the temperature data input by the temperature sensor.
And 140, receiving at least one of vibration acceleration in the form of a voltage signal input by a vibration acceleration sensor, a pressure signal in the form of a voltage signal input by a pressure sensor, a force signal in the form of a voltage signal input by a force sensor, a stress signal in the form of a voltage signal input by a stress sensor and a displacement signal in the form of a voltage signal input by a displacement sensor.
In some embodiments of the present disclosure, step 100 may include at least one of the following steps, where a positioning signal input by a positioning device is received, and the positioning signal is parsed by a communication protocol to obtain a speed and a driving distance of the whole vehicle; and receiving the whole CAN data through the whole CAN bus interface, analyzing the whole CAN data through a communication protocol, and reading at least one signal of battery output voltage, battery output current, motor rotation speed, motor torque, motor power, air cylinder air pressure and brake pedal trigger signals.
And 200, the data acquisition device provides the various signals and data to the performance evaluation device, wherein the performance evaluation device is configured to perform data analysis according to the various signals and data provided by the data acquisition device, evaluate the dynamic comprehensive test result of the vehicle and provide optimization measures according to the test result.
The embodiment of the disclosure provides a method for testing the dynamic comprehensive performance of a whole vehicle. The method of the embodiment of the disclosure CAN collect data such as vibration acceleration, noise, displacement, pressure, force, stress, temperature, flow, a whole vehicle CAN signal, a GPS (Global Positioning System ) signal and the like, and CAN meet synchronous collection of dynamic various performance data under various working conditions, so that the data quality is further improved.
FIG. 2 is a schematic diagram of other embodiments of the overall performance testing method of the present disclosure. Preferably, the embodiment can be executed by the data acquisition device or the integrated performance test system of the whole vehicle. The method comprises at least one of steps 1 to 13, wherein:
and step 1, determining a test object, a test item and a test working condition.
In some embodiments of the present disclosure, step 1 may include: the data acquisition device determines a test object, a test item and a test working condition according to the input of a user.
And step 2, determining test points.
In some embodiments of the present disclosure, step 1 may include: the data acquisition device determines test points according to the input of a user.
And step 3, arranging various test sensors according to test requirements, and connecting the test sensors with corresponding channels of a lower computer (a data acquisition device).
FIG. 3 is a schematic diagram of some embodiments of the overall vehicle performance testing system of the present disclosure. As shown in fig. 3, the test sensor of the present disclosure may include at least one of a vibration acceleration sensor, a microphone, a wire displacement sensor, a force sensor, a stress sensor, a pressure sensor, a temperature sensor, and a flow meter.
In some embodiments of the present disclosure, the temperature sensor may be a thermocouple.
In some embodiments of the present disclosure, the stress sensor may be a strain gauge.
In some embodiments of the present disclosure, the test sensor is configured to output at least one of a voltage signal, a current signal, and a digital signal.
In some embodiments of the present disclosure, the overall vehicle performance test system is configured to perform at least one of a dynamic performance test, an economic performance test, a noise, vibration and harshness performance test, a braking energy recovery performance test, a braking performance test, and a thermal management performance test.
FIG. 4 is a schematic diagram of other embodiments of the overall vehicle performance testing system of the present disclosure. Fig. 4 specifically shows a schematic diagram of a brake energy recovery comprehensive performance test system of a new energy electric vehicle in some embodiments. Fig. 5 is a schematic diagram of the installation of a sensor in some embodiments of the present disclosure. In the case where the vehicle integrated performance test system is configured to perform the brake energy recovery integrated performance test, as shown in fig. 4 and 5, the test sensor includes at least one of a pedal force sensor, a return straight pedal displacement sensor, a front axle air pressure sensor, and a rear axle air pressure sensor. In some embodiments of the present disclosure, the number of front and rear axle barometric sensors is 4. Fig. 5 specifically illustrates a schematic diagram of an autonomously designed return-to-linear pedal displacement sensor in some embodiments of the present disclosure. As shown in fig. 5, the reset linear pedal displacement sensor is mounted on the brake pedal arm and the main driving floor through a displacement sensor tool and a pedal stroke limiting threaded rod.
In some embodiments of the present disclosure, the test sensor is installed to ensure that the installation is secure and accurate, meeting the dynamic test requirements.
And 4, connecting with an OBD (On Board Diagnostics, on-board automatic diagnosis system) interface/CAN interface of the whole vehicle by using a CAN bus.
In some embodiments of the present disclosure, as shown in fig. 3 and 4, step 4 may include: the lower computer (data acquisition device) CAN acquire the CAN data of the whole vehicle through a CAN communication protocol.
In some embodiments of the present disclosure, as shown in fig. 4, step 4 may include: the whole vehicle data is input to the data acquisition device through the whole vehicle CAN bus interface, and signals such as battery output voltage and current, motor rotation speed, torque, power, air pressure of the air storage cylinder, brake pedal triggering and the like are read through analysis of a communication protocol.
And 5, installing a positioning device according to the test requirement, and connecting the positioning device through a CAN bus.
In some embodiments of the present disclosure, the positioning device may be a GPS module, as shown in fig. 3 and 4.
In some embodiments of the present disclosure, step 5 may include: the lower computer (data acquisition device) acquires positioning signals such as speed, distance, altitude, heading and the like through a CAN bus.
In some embodiments of the present disclosure, the GPS is placed on top of the vehicle to facilitate signal reception.
In some embodiments of the present disclosure, step 5 may include: the lower computer (data acquisition device) acquires positioning signals such as speed, distance, altitude, heading and the like through a CAN bus.
In some embodiments of the present disclosure, step 5 may include: the whole vehicle CAN data is input to the data acquisition device through the whole vehicle CAN bus interface, and signals such as battery output voltage, current, motor rotation speed, torque, power, air pressure of the air storage cylinder, triggering of the brake pedal and the like are read through analysis of a communication protocol.
And 6, installing a trigger according to the test requirement and connecting with a lower computer (a data acquisition device).
In some embodiments of the present disclosure, step 6 may include: the trigger can trigger the data acquisition device to start acquisition and mark a key time point.
In some embodiments of the present disclosure, step 6 may include: the trigger is input to the data acquisition device through the digital quantity interface.
In some embodiments of the present disclosure, the data acquisition device and trigger are placed in the cab and secured against falling during testing.
And 7, debugging the various signals in the steps 3-6 through a lower computer to enable the signals to normally fluctuate.
In some embodiments of the present disclosure, step 7 may include: and (5) channel setting and debugging.
In some embodiments of the present disclosure, step 7 may include: the data acquisition device selects all channels used in the data acquisition device according to the input of a user, wherein all the channels correspond to the corresponding sensors; the data acquisition device sets at least one of a sensor type, a signal calibration value, a signal unit and a signal direction according to user input.
In some embodiments of the present disclosure, step 7 may include: each channel is checked and used in the lower computer data acquisition device, and each channel corresponds to the sensor; the setting module is used for setting the name, the type, the calibration value, the unit, the direction and the like of the measuring point, the measuring range is not beyond the range of the sensor Cheng Fan, and good signal response can be obtained, so that the best test condition is met.
And 8, pre-collecting each signal to ensure reliable and effective data.
In some embodiments of the present disclosure, step 8 may include: the data acquisition device acquires and checks each signal data before the test to ensure that the signal of each acquisition point is normal; the trigger may implement a start, time point marker function.
And 9, data acquisition is carried out, and data synchronous acquisition is carried out according to the test working condition.
In some embodiments of the present disclosure, step 9 may include: the data acquisition device stores the time domain data of the required channel signals according to the input of a user, and sets proper acquisition frequency (the acquisition frequency of the braking energy recovery comprehensive performance test of the new energy electric vehicle is set to be 100 Hz) and acquisition time (the manual control ending time can also be set); the magnitude of the signal value at each measuring point and the curve relationship of each signal with time are monitored in real time in the test, as shown in fig. 6. Fig. 6 is a schematic diagram of a data acquisition interface in some embodiments of the present disclosure. The lower part of the figure 6 specifically shows the real-time signal values of 12 signals, such as vehicle speed, total battery voltage, total battery current, actual output torque of a motor, actual output rotating speed of the motor, travel of a brake pedal, air pressure of a rear air reservoir, two-axis air pressure, one-axis air pressure, ABS activation state, pedal force, pedal displacement and the like; above the 12 real-time signal values, fig. 6 also shows the motor actual output torque, motor actual output rotational speed, pedal force, and accelerator pedal travel 4 signals as a function of time.
In some embodiments of the present disclosure, step 10 may include: and after the test is finished, carrying out the usability evaluation on the collected data signals at the data collecting device.
And step 11, test data export processing.
In some embodiments of the present disclosure, step 11 may include: the data acquisition device derives the acquired various signals and data into data in a predetermined format, wherein the data in the predetermined format changes with time, and the time interval is determined by the sampling frequency or the derived rate is set according to the input.
In some embodiments of the present disclosure, step 11 may include: the lower computer data acquisition device can export the acquired signals into EXCEL data which changes along with time, and the time interval is determined by the sampling frequency or the export rate is manually set according to the need, as shown in fig. 7. Fig. 7 is a schematic diagram of test data export EXCEL format in some embodiments of the present disclosure. Fig. 7 specifically shows a real-time signal value list of signals such as vehicle speed (speed), distance, longitude (Longitude), gear shift state of TCU (Transmission Control Unit, automatic transmission control unit), total battery voltage, total battery current, actual output torque of motor, actual output rotation speed of motor, brake pedal stroke, rear air reservoir air pressure, front air reservoir air pressure, two-axis air pressure, one-axis air pressure, ABS activation state, pedal force and pedal displacement at different moments.
And step 12, data analysis is performed.
In some embodiments of the present disclosure, step 12 may include: and evaluating the dynamic comprehensive test result of the vehicle, and providing optimization measures according to the test result.
In some embodiments of the present disclosure, step 12 may include: the performance evaluation device performs data analysis and processing according to the data in a preset format, and draws a relation curve of each signal changing along with the time domain.
In some embodiments of the present disclosure, step 12 may include: and (3) carrying out data analysis and processing according to the EXCEL result, and drawing a relation curve of each signal changing along with the time domain, as shown in fig. 8. Fig. 8 is a schematic diagram of test result analysis in some embodiments of the present disclosure. Fig. 8 shows the relationship between the three signals of brake pedal travel, actual motor output torque, and ABS activation state over time.
And 13, detaching the instrument.
The test system of the embodiment of the disclosure CAN integrate the performance parameters of the whole vehicle, CAN realize synchronous acquisition of data such as vibration acceleration, noise, displacement, pressure, force, stress, temperature, flow, CAN signals of the whole vehicle, GPS signals and the like, and is easy to popularize and apply to comprehensive performance tests of the whole vehicle.
The test method of the embodiment of the disclosure is simple, and one tester can independently and autonomously use the whole vehicle dynamic comprehensive performance test system to perform test work under various working conditions.
The test results of the embodiment of the disclosure are visual and easy to process, and comprehensive analysis and research on the whole vehicle performance data are easy to carry out.
The embodiment of the disclosure can be suitable for various conventional and limit working condition tests, has high reliability, and can also be used for testing the reliability and durability comprehensive performance for a long time.
The embodiment of the disclosure has low requirements on the test environment, can be suitable for various indoor static tests and hub test tests, and can also be used for outdoor road dynamic tests.
The standardized test method for the dynamic comprehensive performance of the whole vehicle disclosed by the embodiment of the invention saves test period and purchase cost of high-volume test equipment, and shortens the product development period.
Fig. 9 is a schematic diagram of some embodiments of a data acquisition device of the present disclosure. As shown in fig. 9, the data acquisition device of the present disclosure may include a data acquisition unit 91 and a data providing unit 92, wherein:
the data acquisition unit 91 is configured to acquire various signals and data, wherein the various signals and data comprise sensor signals provided by test sensors, whole car CAN data provided by a CAN bus, positioning signals provided by a positioning device and trigger signals provided by a trigger.
In some embodiments of the present disclosure, the data acquisition unit 91 may be configured to receive a positioning signal input by a positioning device, analyze the positioning signal through a communication protocol, and obtain a speed and a driving distance of the whole vehicle; and receiving the whole CAN data through the whole CAN bus interface, analyzing the whole CAN data through a communication protocol, and reading at least one signal of battery output voltage, battery output current, motor rotation speed, motor torque, motor power, air cylinder air pressure and brake pedal trigger signals.
The data providing unit 92 is configured to provide the various signals and data to the performance evaluation device, where the performance evaluation device is configured to perform data analysis according to the various signals and data provided by the data acquisition device, evaluate the dynamic comprehensive test result of the vehicle, and propose an optimization measure according to the test result.
In some embodiments of the present disclosure, the data providing unit 92 may be configured to derive the collected various signals and data into data in a predetermined format, wherein the data in the predetermined format changes with time, the time interval is determined by the sampling frequency or the derived rate is set according to the input, wherein the performance evaluation device is configured to perform data analysis and processing according to the data in the predetermined format, and draw a relationship curve of the changes of the signals with time domain.
In some embodiments of the present disclosure, as shown in fig. 3 and 4, the data acquisition unit of the embodiment of fig. 9 may include at least one of a digital signal module, a current signal module, a CAN communication module, and a voltage signal module, wherein:
a digital signal module configured to receive at least one of a trigger signal in the form of a digital signal input by the trigger and meter data in the form of a digital signal input by the meter.
And a current signal module configured to receive at least one of a vibration acceleration in the form of a current signal input from the vibration acceleration sensor and a sound signal in the form of a current signal input from the microphone.
The CAN communication module is configured to receive at least one of the whole vehicle CAN data, the positioning signals input by the positioning device and the temperature data input by the temperature sensor through the temperature module.
The voltage signal module is configured to receive at least one of vibration acceleration in the form of a voltage signal input by the vibration acceleration sensor, a pressure signal in the form of a voltage signal input by the pressure sensor, a force signal in the form of a voltage signal input by the force sensor, a stress signal in the form of a voltage signal input by the stress sensor, and a displacement signal in the form of a voltage signal input by the displacement sensor.
In some embodiments of the present disclosure, the data acquisition device may be further configured to determine the test subject, the test item, the test condition, and the test site based on the user input.
In some embodiments of the present disclosure, the data acquisition device may be further configured to select, according to an input of a user, each channel used in the data acquisition device, each channel corresponding to a corresponding sensor, and perform channel setting and debugging; at least one of a sensor type, a signal calibration value, a signal unit, and a signal direction is set according to a user input.
In some embodiments of the present disclosure, the data acquisition device may be further configured to perform an acquisition check on each of the signal data prior to the test.
In some embodiments of the present disclosure, the data acquisition device may be further configured to store the time domain data of the desired channel signal according to user input, and set a suitable acquisition frequency and acquisition time, and monitor, in real time, the signal value of each measurement point and the curve relationship of each signal changing with time in the test.
In some embodiments of the present disclosure, the data acquisition device may be further configured to perform a plausibility assessment on the acquired data signal after the end of the test.
In some embodiments of the present disclosure, the data acquisition device is configured to perform operations for implementing the method for testing overall performance of a whole vehicle according to any one of the embodiments (any one of fig. 1 to 8) above.
The test system comprises the data acquisition device, can be used for synchronizing whole vehicle signal data under various working conditions simply and conveniently, and can be popularized and applied to comprehensive performance test such as dynamic property, economy, NVH, braking, thermal management and the like. Therefore, the embodiment of the disclosure can comprehensively evaluate each performance of the whole vehicle in a vehicle sample stage, optimize the performance level of the whole vehicle, shorten the development period and promote the product competitiveness of the whole vehicle.
Fig. 10 is a schematic structural view of other embodiments of the data acquisition device of the present disclosure. As shown in fig. 10, the data acquisition device of the present disclosure may include a memory 101 and a processor 102.
The memory 101 is configured to store instructions, and the processor 102 is coupled to the memory 101, and the processor 102 is configured to implement the vehicle integrated performance test system according to any one of the embodiments (e.g., any one of fig. 1 to 8) described above based on the instruction execution stored in the memory.
As shown in fig. 3, the data acquisition device further comprises a communication interface 103 for information interaction with other devices. Meanwhile, the data acquisition device further comprises a bus 104, and the processor 102, the communication interface 103 and the memory 101 are in communication with each other through the bus 104.
The Memory 101 may include a high-speed RAM Memory or may further include a Non-volatile Memory (Non-volatile Memory), such as at least one magnetic disk Memory. Memory 101 may also be a memory array. Memory 101 may also be partitioned and the blocks may be combined into virtual volumes according to certain rules.
Further, the processor 102 may be a central processing unit CPU, or may be an application specific integrated circuit ASIC, or one or more integrated circuits configured to implement embodiments of the present disclosure.
FIG. 11 is a schematic diagram of yet other embodiments of the overall performance testing system of the whole vehicle of the present disclosure. Fig. 3 and 4 also provide schematic diagrams of some embodiments of the overall vehicle performance testing system of the present disclosure. As shown in fig. 3, 4 and 11, the overall vehicle performance test system of the present disclosure may include a test sensor 10, a CAN bus 20, a positioning device 30, a trigger 40, a data acquisition device 50 and a performance evaluation device 60, wherein:
a test sensor 10 configured to provide a sensor signal to a data acquisition device.
In some embodiments of the present disclosure, the test sensor is configured to output at least one of a voltage signal, a current signal, and a digital signal.
In some embodiments of the present disclosure, as shown in fig. 3, the test sensor of the present disclosure may include at least one of a vibration acceleration sensor, a microphone, a pull-wire displacement sensor, a force sensor, a stress sensor, a pressure sensor, a temperature sensor, and a flow meter.
In some embodiments of the present disclosure, the temperature sensor may be a thermocouple.
In some embodiments of the present disclosure, the stress sensor may be a strain gauge.
In some embodiments of the present disclosure, the overall vehicle performance test system may be configured to perform at least one of a dynamic performance test, an economic performance test, a noise, vibration and harshness performance test, a braking energy recovery performance test, a braking performance test, and a thermal management performance test.
In some embodiments of the present disclosure, in the case where the vehicle integrated performance test system is configured to perform a brake energy recovery integrated performance test, the test sensor includes at least one of a pedal force sensor, a return straight pedal displacement sensor, a front axle air pressure sensor, and a rear axle air pressure sensor, as shown in fig. 4.
The CAN bus 20 is configured to provide the whole vehicle CAN data to the data acquisition device.
In some embodiments of the present disclosure, as shown in fig. 4, the data of the whole vehicle is input to the data acquisition device through the whole vehicle CAN bus interface, and signals of the battery output voltage, the current, the motor rotation speed, the torque, the power, the air pressure of the air storage cylinder, the brake pedal triggering and the like are read through analysis of the communication protocol.
A positioning device 30 configured to provide a positioning signal to the data acquisition device.
In some embodiments of the present disclosure, the positioning device 30 may be disposed on top of the vehicle.
In some embodiments of the present disclosure, the positioning device 30 may be configured to transmit the positioning signal to the data acquisition device over a CAN bus; the data acquisition device is configured to analyze the positioning signals through a communication protocol to obtain the speed and the driving distance of the whole vehicle.
In some embodiments of the present disclosure, the positioning signal includes at least one of a speed signal, a distance signal, an altitude signal, and a heading signal.
In some embodiments of the present disclosure, the positioning device may be a GPS module, as shown in fig. 3 and 4.
In some embodiments of the present disclosure, the GPS is placed on top of the vehicle to facilitate signal reception.
A trigger 40 configured to send a trigger signal to the data acquisition device, triggering the data acquisition device to begin acquiring data.
In some embodiments of the present disclosure, the trigger 40 is configured to trigger the data acquisition device to begin acquisition and mark a critical point in time.
In some embodiments of the present disclosure, the trigger 40 may be input to the data acquisition device through a digital quantity interface.
The data acquisition device 50 is a data acquisition device as described in any of the embodiments described above (e.g., the embodiment of fig. 9 or 10).
In some embodiments of the present disclosure, the data acquisition device 50 is configured to export the various signals and data acquired into data in a predetermined format, wherein the data in the predetermined format varies with time, the time interval being determined by the sampling frequency or the export rate being set according to the input.
In some embodiments of the present disclosure, the data acquisition device 50 may be implemented as a lower computer.
The performance evaluation device 60 is configured to perform data analysis according to various signals and data provided by the data acquisition device, evaluate the dynamic comprehensive test result of the vehicle, and propose optimization measures according to the test result.
In some embodiments of the present disclosure, the performance evaluation device 60 may be implemented as a computer.
In some embodiments of the present disclosure, the performance evaluation device 60 is configured to perform data analysis and processing according to data in a predetermined format, and draw a relationship curve of each signal changing with time domain.
Compared with the related technology, the whole vehicle dynamic comprehensive performance testing system disclosed by the disclosure has the following advantages: (1) The test system disclosed by the invention is simple in composition, convenient to detach and suitable for various vehicles; (2) The method CAN realize synchronous acquisition of data such as vibration acceleration, noise, displacement, pressure, force, stress, temperature, flow, CAN signals of the whole vehicle, GPS signals and the like; (3) The method and the device can perform different signal combination acquisition according to test requirements, and meet various test conditions; (4) The method and the device can obtain the relation between each test data and each time domain with high precision, and the data processing is simple and convenient; (5) The method and the device can greatly improve the quality of test data, are more beneficial to analyzing the performance of the whole vehicle, and lay a foundation for improving the performance of the product.
According to another aspect of the disclosure, there is provided a computer readable storage medium, wherein the computer readable storage medium stores computer instructions that, when executed by a processor, implement the whole vehicle integrated performance test system according to any of the embodiments described above (e.g., any of fig. 1 to 8).
In some embodiments of the present disclosure, the computer-readable storage medium may be a non-transitory computer-readable storage medium.
The system and the method can perform comprehensive management, optimization and promotion on the combination of performances such as dynamic performance, economy, NVH, braking, emission, thermal management and the like. The method and the device can acquire the dynamic comprehensive performance data of the whole vehicle, so that data analysis can be better carried out, comprehensive consideration of various performances is realized, and various performances of the product reach the optimal level.
It will be apparent to those skilled in the art that embodiments of the present disclosure may be provided as a method, apparatus, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the disclosure. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The data acquisition devices, performance evaluation devices, data acquisition units, data providing units, digital signal modules, current signal modules, CAN communication modules, and voltage signal modules described above may be implemented as general purpose processors, programmable Logic Controllers (PLCs), 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, or any suitable combination thereof, for performing the functions described herein.
Thus far, the present disclosure has been described in detail. In order to avoid obscuring the concepts of the present disclosure, some details known in the art are not described. How to implement the solutions disclosed herein will be fully apparent to those skilled in the art from the above description.
Those of ordinary skill in the art will appreciate that all or a portion of the steps implementing the above embodiments may be implemented by hardware, or may be implemented by a program indicating that the relevant hardware is implemented, where the program may be stored on a non-transitory computer readable storage medium, where the storage medium may be a read-only memory, a magnetic disk or optical disk, etc.
The description of the present disclosure has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the disclosure in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the disclosure and the practical application, and to enable others of ordinary skill in the art to understand the disclosure for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (17)
1. A method for testing the comprehensive performance of a whole vehicle comprises the following steps:
The data acquisition device acquires various signals and data, wherein the various signals and data comprise sensor signals provided by a test sensor, whole vehicle CAN data provided by a CAN bus, positioning signals provided by a positioning device and trigger signals provided by a trigger;
the data acquisition device provides the various signals and data to the performance evaluation device, wherein the performance evaluation device is configured to perform data analysis according to the various signals and data provided by the data acquisition device, evaluate the dynamic comprehensive test result of the vehicle and provide optimization measures according to the test result.
2. The overall performance test method of the whole vehicle according to claim 1, further comprising:
the data acquisition device derives various signals and data acquired into data in a preset format, wherein the data in the preset format changes along with time, the time interval is determined by sampling frequency or the deriving rate is set according to input, and the performance evaluation device is configured to analyze and process the data according to the data in the preset format and draw a relation curve of each signal changing along with time domain.
3. The method for testing the comprehensive performance of the whole vehicle according to claim 1 or 2, wherein the data acquisition device acquires various signals and data comprising at least one of the following steps, wherein:
Receiving at least one of a trigger signal in the form of a digital signal input by the trigger and meter data in the form of a digital signal input by the meter;
receiving at least one of vibration acceleration in the form of a current signal input by a vibration acceleration sensor and a sound signal in the form of a current signal input in a microphone;
receiving at least one of CAN data of the whole vehicle, positioning signals input by a positioning device and temperature data input by a temperature sensor;
receiving at least one of vibration acceleration in the form of a voltage signal input by a vibration acceleration sensor, a pressure signal in the form of a voltage signal input by a pressure sensor, a force signal in the form of a voltage signal input by a force sensor, a stress signal in the form of a voltage signal input by a stress sensor, and a displacement signal in the form of a voltage signal input by a displacement sensor.
4. The method for testing the comprehensive performance of the whole vehicle according to claim 1 or 2, wherein the data acquisition device acquires various signals and data comprising at least one of the following steps, wherein:
receiving a positioning signal input by a positioning device, and analyzing the positioning signal through a communication protocol to obtain the speed and the driving distance of the whole vehicle;
And receiving the whole CAN data through the whole CAN bus interface, analyzing the whole CAN data through a communication protocol, and reading at least one signal of battery output voltage, battery output current, motor rotation speed, motor torque, motor power, air cylinder air pressure and brake pedal trigger signals.
5. The vehicle integrated performance test system according to claim 1 or 2, further comprising:
the data acquisition device determines a test object, a test item, a test working condition and a test measuring point according to the input of a user;
the data acquisition device selects all channels used in the data acquisition device according to the input of a user, and all the channels correspond to the corresponding sensors to perform channel setting and debugging;
the data acquisition device sets at least one of a sensor type, a signal calibration value, a signal unit and a signal direction according to user input.
6. The vehicle integrated performance test system according to claim 1 or 2, further comprising at least one of the following steps, wherein:
the data acquisition device acquires and examines each signal data before the test;
the data acquisition device is used for real-time monitoring the signal value of each measuring point and the curve relation of each signal along with time change in the test according to the time domain data of the required channel signal which is input by a user and setting proper acquisition frequency and acquisition time;
And after the test is finished, the data acquisition device performs the usability evaluation on the acquired data signals.
7. A data acquisition device, comprising:
the data acquisition unit is configured to acquire various signals and data, wherein the various signals and data comprise sensor signals provided by a test sensor, whole car CAN data provided by a CAN bus, positioning signals provided by a positioning device and trigger signals provided by a trigger;
the data providing unit is configured to provide the various signals and data to the performance evaluation device, wherein the performance evaluation device is configured to perform data analysis according to the various signals and data provided by the data acquisition device, evaluate the dynamic comprehensive test result of the vehicle and provide optimization measures according to the test result.
8. The data acquisition device of claim 7, wherein the data acquisition unit comprises at least one of a digital signal module, a current signal module, a CAN communication module, and a voltage signal module, wherein:
a digital signal module configured to receive at least one of a trigger signal in the form of a digital signal input by the trigger and flow meter data in the form of a digital signal input by the flow meter;
A current signal module configured to receive at least one of a vibration acceleration in the form of a current signal input from the vibration acceleration sensor, and a sound signal in the form of a current signal input from the microphone;
the CAN communication module is configured to receive at least one of the whole vehicle CAN data, a positioning signal input by the positioning device and temperature data input by the temperature sensor;
the voltage signal module is configured to receive at least one of vibration acceleration in the form of a voltage signal input by the vibration acceleration sensor, a pressure signal in the form of a voltage signal input by the pressure sensor, a force signal in the form of a voltage signal input by the force sensor, a stress signal in the form of a voltage signal input by the stress sensor, and a displacement signal in the form of a voltage signal input by the displacement sensor.
9. The data acquisition device according to claim 7 or 8, wherein the data acquisition device is configured to perform operations for implementing the overall vehicle performance testing method according to any one of claims 1-6.
10. A data acquisition device, comprising:
a memory configured to store instructions;
a processor configured to execute the instructions such that the data acquisition device performs operations to implement the overall vehicle performance testing method of any one of claims 1-6.
11. A vehicle integrated performance test system, comprising:
a test sensor configured to provide a sensor signal to the data acquisition device;
a CAN bus configured to provide the whole vehicle CAN data to the data acquisition device;
a positioning device configured to provide a positioning signal to the data acquisition device;
the trigger is configured to send a trigger signal to the data acquisition device and trigger the data acquisition device to start acquiring data;
a data acquisition device as claimed in any one of claims 7 to 10;
the performance evaluation device is configured to perform data analysis according to various signals and data provided by the data acquisition device, evaluate the dynamic comprehensive test result of the vehicle, and propose optimization measures according to the test result.
12. The vehicle integrated performance test system of claim 11, wherein:
a data acquisition device configured to derive acquired various signals and data into data of a predetermined format, wherein the data of the predetermined format varies with time, the time interval being determined by a sampling frequency or a derivation rate being set according to an input;
and the performance evaluation device is configured to perform data analysis and processing according to data in a preset format and draw a relation curve of each signal changing along with the time domain.
13. The vehicle integrated performance test system according to claim 11 or 12, wherein:
the positioning device is arranged at the top end of the vehicle;
and/or the number of the groups of groups,
the positioning device is configured to transmit the positioning signal to the data acquisition device through a CAN bus; the data acquisition device is configured to analyze the positioning signals through a communication protocol to acquire the speed and the driving distance of the whole vehicle;
and/or the number of the groups of groups,
the positioning signals include at least one of a speed signal, a distance signal, an altitude signal, and a heading signal.
14. The vehicle integrated performance test system according to claim 11 or 12, wherein:
the overall vehicle performance test system is configured to perform at least one of a dynamic performance test, an economic performance test, a noise, vibration and harshness performance test, a braking energy recovery performance test, a braking performance test, and a thermal management performance test.
15. The vehicle integrated performance test system according to claim 11 or 12, wherein:
the test sensor is configured to output at least one of a voltage signal, a current signal and a digital signal;
The test sensor comprises at least one sensor of a vibration acceleration sensor, a microphone, a stay wire displacement sensor, a force sensor, a stress sensor, a pressure sensor, a thermocouple and a flowmeter.
16. The vehicle integrated performance test system according to claim 11 or 12, wherein:
in the case where the vehicle integrated performance test system is configured to perform a brake energy recovery integrated performance test, the test sensor includes at least one of a pedal force sensor, a return straight-line pedal displacement sensor, a front axle air pressure sensor, and a rear axle air pressure sensor.
17. A computer readable storage medium storing computer instructions which, when executed by a processor, implement the vehicle integrated performance test method of any one of claims 1-11.
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