Simulation cabin entertainment system, vehicle simulation test method and long mileage test method

Abstract

The invention discloses a simulation cabin entertainment system, a vehicle simulation test method and a long mileage test method, and relates to the technical field of automatic test. The simulation cabin entertainment system comprises an industrial personal computer, a programmable power supply, a CAN board card and a relay board card. After a real vehicle CAN message is obtained, an industrial personal computer can be utilized to analyze the real vehicle CAN message to obtain target data, and according to the target data, a first control signal is sent to a programmable power supply, a second control signal is sent to a CAN board card, and a power supply mode signal and a third control signal are sent to a relay board card. The programmable power supply outputs a power supply waveform and a voltage value matched with the real vehicle CAN message according to the first control signal; the CAN board card outputs a simulation CAN message matched with the real vehicle CAN message according to the second control signal; and the relay board card controls the connection or disconnection of the relay according to the power supply mode signal and the third control signal.

Description

Technical Field

[0001] The present application relates to the field of automated testing technology, and in particular to a simulated cockpit entertainment system, a vehicle simulation testing method and a long-mileage testing method. Background Art

[0002] The vehicle's cockpit entertainment system is a comprehensive information processing system integrated inside the vehicle. It integrates multiple functions such as audio, video, navigation, communication, vehicle information and control, aiming to provide drivers and passengers with a richer, more convenient and personalized entertainment and information service experience.

[0003] In the traditional solution, testing the cockpit entertainment system requires a large amount of real vehicle verification, and each real vehicle requires a tester to test the cockpit entertainment system of the real vehicle. This solution has problems such as occasional problems in the cockpit (such as excessive static current and black screen of 360 panoramic image) are difficult to reproduce and the testing cost is high. Summary of the invention

[0004] Based on the above problems, this application provides a simulated cockpit entertainment system, through which in-depth analysis of the real vehicle CAN messages can be achieved, and the real vehicle scenes can be seamlessly migrated to the device to be tested, providing an efficient and accurate testing solution for the development and verification of the car cockpit entertainment system.

[0005] The first aspect of the present application discloses a simulated cockpit entertainment system, the system comprising: an industrial computer, a programmable power supply, a CAN board and a relay board, the programmable power supply, the CAN board and the relay board are all connected to the industrial computer; the programmable power supply is connected to the relay board;

[0006] The industrial computer is used to parse the real vehicle CAN message to obtain target data; and according to the target data, send a first control signal to the programmable power supply, send a second control signal to the CAN board, and send a power mode signal and a third control signal to the relay board; the real vehicle CAN message is a CAN message collected during the actual operation of the vehicle;

[0007] The programmable power supply is used to output a power waveform and a voltage value matching the actual vehicle CAN message according to the first control signal;

[0008] The CAN board is used to output a simulated CAN message matching the real vehicle CAN message according to the second control signal;

[0009] The relay board is used to control the closing and opening of the relay according to the power mode signal and the third control signal.

[0010] In an optional implementation, the system further includes an image acquisition device; the image acquisition device is connected to the industrial computer;

[0011] The image acquisition device is used to capture the image of the display screen of the device to be tested, and transmit the captured image of the display screen to the industrial computer;

[0012] The industrial computer is also used to determine whether there is a problem with the device to be tested based on the image on the display screen.

[0013] In an optional implementation, the system further includes a digital I / O board; the digital I / O board is integrated in the CAN board;

[0014] The digital I / O board is used to simulate the switch signal of the actual vehicle according to the second control signal.

[0015] In an optional implementation, the industrial computer is also used to analyze the target log file to determine the cause of the problem generated by the device to be tested during the test process; the target log file is a file generated by simulating the test of the device to be tested based on the system and the real vehicle CAN message.

[0016] A second aspect of the present application discloses a vehicle simulation test method, the test method comprising:

[0017] Obtaining real vehicle CAN messages; the real vehicle CAN messages are CAN messages collected during the actual operation of the vehicle;

[0018] By simulating the cockpit entertainment system, the operating scenario of the target vehicle is restored on the device to be tested according to the real vehicle CAN message; the target vehicle is the vehicle that generates the real vehicle CAN message; the simulated cockpit entertainment system is the system described in the first aspect.

[0019] The third aspect of the present application discloses a vehicle long mileage test method, the test method comprising:

[0020] Obtaining real vehicle CAN messages and test scripts; the real vehicle CAN messages are CAN messages collected during the actual operation of the vehicle;

[0021] Marking the actual vehicle CAN message at multiple preset time points to obtain a target CAN message;

[0022] Based on the target CAN message, the test script and the simulated cockpit entertainment system, a long mileage test is performed on the device to be tested; the simulated cockpit entertainment system is the system described in the first aspect.

[0023] In an optional implementation, the long mileage test of the device to be tested based on the target CAN message, the test script and the simulated cockpit entertainment system includes:

[0024] At the plurality of preset time points, a target image of the display screen of the device to be tested captured by an image acquisition device is acquired; the image acquisition device is the image acquisition device in the simulated cockpit entertainment system described in the first aspect;

[0025] Based on the target image, it is determined whether the device to be tested has a problem.

[0026] In an optional implementation, judging whether the device to be tested has a problem based on the target image includes:

[0027] By analyzing the color of the target image, it is determined whether the display screen of the device to be tested is abnormal.

[0028] In an optional implementation, judging whether the device to be tested has a problem based on the target image includes:

[0029] By analyzing the difference between the target image and the reference image, it is determined whether the long mileage test data of the device to be tested is accurate; the reference image is an image generated based on the displayed values ​​on the dashboard of the vehicle at different times.

[0030] In an optional implementation, after obtaining the real vehicle CAN message, the method further includes:

[0031] Reprocessing the actual vehicle CAN message to obtain a reprocessed actual vehicle CAN message; the vehicle speed of the reprocessed actual vehicle CAN message is greater than the vehicle speed of the actual vehicle CAN message;

[0032] The step of marking the actual vehicle CAN message at a plurality of preset time points to obtain a target CAN message includes:

[0033] The reprocessed real vehicle CAN message is marked at the plurality of preset time points to obtain the target CAN message.

[0034] Compared with the prior art, this application has the following beneficial effects:

[0035] The simulated cockpit entertainment system disclosed in the present application includes: an industrial computer, a programmable power supply, a CAN board and a relay board; the programmable power supply, the CAN board and the relay board are all connected to the industrial computer; the programmable power supply is connected to the relay board. After obtaining the real vehicle CAN message, the industrial computer can be used to parse the real vehicle CAN message to obtain the target data, and according to the target data, send a first control signal to the programmable power supply, send a second control signal to the CAN board, and send a power mode signal and a third control signal to the relay board. The programmable power supply outputs a power waveform and a voltage value matching the real vehicle CAN message according to the first control signal; the CAN board outputs a simulated CAN message matching the real vehicle CAN message according to the second control signal; the relay board controls the contact or disconnection of the relay according to the power mode signal and the third control signal. In this way, after obtaining the real vehicle CAN message, the real vehicle scene can be seamlessly migrated to the device to be tested through the simulated cockpit entertainment system, that is, the test scene can be quickly restored, thereby turning occasional problems into inevitable problems; there is no need to test on the real vehicle, which reduces the test cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0037] Figure 1 A structural schematic diagram of a simulated cockpit entertainment system provided for an embodiment of the application;

[0038] Figure 2 A schematic diagram of a simulation test of a device to be tested based on a simulation cockpit entertainment system provided in an embodiment of the present application;

[0039] Figure 3 A flow chart of a vehicle long mileage testing method provided in an embodiment of the present application;

[0040] Figure 4 A schematic diagram of a long mileage test report of a vehicle provided in an embodiment of the present application;

[0041] Figure 5 A schematic diagram of another long mileage test report of a vehicle provided in an embodiment of the present application;

[0042] Figure 6 A schematic diagram of a long mileage test report for another vehicle provided in an embodiment of the present application. DETAILED DESCRIPTION

[0043] The vehicle's cockpit entertainment system is a comprehensive information processing system integrated inside the vehicle. It integrates multiple functions such as audio, video, navigation, communication, vehicle information and control, aiming to provide drivers and passengers with a richer, more convenient and personalized entertainment and information service experience.

[0044] In the traditional solution, testing the cockpit entertainment system requires a large amount of real vehicle verification, and each real vehicle requires a tester to test the cockpit entertainment system of the real vehicle. This solution has problems such as occasional problems in the cockpit (such as excessive static current and black screen of 360 panoramic image) are difficult to reproduce and the testing cost is high.

[0045] Based on this, the present application discloses a simulated cockpit entertainment system for a vehicle, which includes: an industrial computer, a programmable power supply, a CAN board and a relay board; the programmable power supply, the CAN board and the relay board are all connected to the industrial computer; the programmable power supply is connected to the relay board. After obtaining the real vehicle CAN message, the industrial computer can be used to parse the real vehicle CAN message to obtain the target data, and according to the target data, send a first control signal to the programmable power supply, send a second control signal to the CAN board, and send a power mode signal and a third control signal to the relay board. The programmable power supply outputs a power waveform and a voltage value matching the real vehicle CAN message according to the first control signal; the CAN board outputs a simulated CAN message matching the real vehicle CAN message according to the second control signal; the relay board controls the relay to be closed or disconnected according to the power mode signal and the third control signal. In this way, after obtaining the CAN message of the actual vehicle, the actual vehicle scene can be seamlessly migrated to the device to be tested through the simulated cockpit entertainment system, that is, the test scene can be quickly restored, thereby turning occasional problems into inevitable problems; there is no need to test on the actual vehicle, which reduces the testing cost.

[0046] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0047] CAN (Controller Area Network) messages are data frames for communication between various control units inside the vehicle. These messages contain various information when the vehicle is running, such as speed, temperature, voltage, current, etc. In this application, the CAN messages collected during the actual operation of the vehicle are referred to as real vehicle CAN messages.

[0048] Figure 1A structural diagram of a simulated cockpit entertainment system provided in an embodiment of the application. Figure 1 The simulated cockpit entertainment system in the present application includes: an industrial computer (industrial computer), a programmable power supply, a CAN board, a relay board and an image acquisition device; the programmable power supply, the CAN board, the relay board and the image acquisition device are all communicatively connected to the industrial computer; the programmable power supply is connected to the relay board.

[0049] The industrial computer can parse the real vehicle CAN message to obtain the target data, and according to the target data, send the first control signal to the programmable power supply, send the second control signal to the CAN board, and send the power mode signal and the third control signal to the relay board.

[0050] After receiving the first control signal sent by the industrial computer, the programmable power supply can change the output voltage value according to the first control signal, output continuous voltage and continuous current, and simulate the high voltage, low voltage and voltage fluctuation of the actual vehicle battery, that is, it can output a power waveform and voltage value that matches the actual vehicle CAN message.

[0051] After receiving the second control signal sent by the industrial computer, the CAN board outputs a simulated CAN message that matches the real vehicle CAN message according to the second control signal, so that the real vehicle CAN message can be truly restored, so that the CAN message output by the CAN board and the real vehicle CAN message are almost completely synchronized.

[0052] After receiving the third control signal and the power mode signal sent by the industrial computer, the relay board controls the closing or opening of the relay.

[0053] The image acquisition device may be a camera, which is used to capture the image of the display screen of the device to be tested and transmit the captured image of the display screen to an industrial computer.

[0054] It is understandable that including an image acquisition device in the simulated cockpit entertainment system is a preferred implementation mode, that is, the simulated cockpit entertainment system may not include an image acquisition device. The advantage of including an image acquisition device in the simulated cockpit entertainment system is that the image of the display screen of the device to be tested can be captured in time, and then based on the image, it can be judged whether there is a problem with the device to be tested.

[0055] When the simulated cockpit entertainment system includes an image acquisition device, the industrial computer should also have the following function, that is, after receiving the image transmitted by the image acquisition device, the industrial computer can determine whether there is a problem with the device to be tested based on the image.

[0056] Furthermore, a digital I / O board may be integrated into the CAN board of the cockpit entertainment system, and the digital I / O board may simulate the switch signal of the actual vehicle according to the second control signal sent by the industrial computer.

[0057] Through the introduction of the above embodiments, it can be known that after obtaining the real vehicle CAN message, the device to be tested can be tested based on the real vehicle CAN message and the simulated cockpit entertainment system to generate a target log file. The industrial computer is also used to analyze the target log file to determine the cause of the problem generated by the device to be tested during the test process.

[0058] It is understandable that the reason why industrial computers can achieve many of the above functions is that software programs that can achieve specific purposes are installed in the industrial computers.

[0059] Exemplarily, CAN signal analysis software can be installed on an industrial computer to implement analysis of CAN messages, and a second control signal can be sent to the CAN board through the software; so that the CAN board can truly restore the actual vehicle CAN message based on the second control signal.

[0060] For example, SR232 serial port software can be installed in an industrial computer, and a first control signal can be sent to the programmable power supply through the software to control the programmable power supply, such as turning on the power supply, turning off the power supply, setting the voltage value of the power supply, setting the current value of the power supply, reading the current value of the power supply, and reading the voltage value of the power supply.

[0061] For example, image algorithm software can be installed on an industrial computer, and the image acquisition device can be controlled by the software to automatically capture the image of the display screen of the device to be tested; the color of the image on the display screen can be analyzed by the software to determine whether the screen of the device to be tested has abnormal problems such as black screen, stuck screen, flashing screen and green screen; the difference between the image on the display screen and the reference image stored in the industrial computer can be analyzed by the software to determine whether there are other problems with the device to be tested. The reference image is an image generated based on the display values ​​on the dashboard of the vehicle at different times.

[0062] Figure 2 A schematic diagram of a simulation test of a device to be tested based on a simulated cockpit entertainment system provided in an embodiment of the present application. Figure 2 The smart cockpit in the test is the equipment to be tested. Figure 2As shown, the program-controlled power supply, relay board, CAN board (including CAN, CANFD, SOA and other integrated units), and image acquisition device are all connected to the industrial computer; the program-controlled power supply and relay board are connected through the KL15 hard line; the program-controlled power supply is connected to the KL30 pin of the smart cockpit; the relay board is connected to the KL15 pin of the smart cockpit. Among them, the CAN board includes CAN, CAN FD (CAN with Flexible DataRate), SOA (Service-Oriented Architecture) and other integrated units.

[0063] After obtaining the real vehicle CAN message, the real vehicle CAN message is input into the industrial computer, and the real vehicle CAN message is parsed by the industrial computer to obtain the target data; the SR232 serial port software in the industrial computer sends a first control signal to the programmable power supply to control the power on and off of the power supply according to the target data, so as to send out an accurate simulated analog voltage signal.

[0064] The industrial computer sends a power mode signal and a third control signal to the relay board according to the target data to control the closing and opening of the relay, thereby producing a signal synchronized with the power mode signal indicated in the real vehicle CAN signal; simulating the real ignition cycle of the vehicle indicated in the real vehicle CAN message to ensure the accuracy of the signal.

[0065] The industrial computer sends a second control signal to the CAN board according to the target data, that is, Figure 2 After receiving the second control signal, the CAN board injects the simulated CAN signal (vehicle speed, gear position and power mode signal) into the smart cockpit (device to be tested), simulating the behavior of the vehicle controller node, and truly restores the real vehicle CAN message, so that the CAN message output by the CAN board and the real vehicle CAN message are almost completely synchronized. In this process, the cycle of all messages and the triggering timing of the signal are highly consistent with the real vehicle problem scenario, ensuring the accuracy and reliability of the test.

[0066] also, Figure 2 The simulated cockpit entertainment system includes an image acquisition device, namely an industrial camera. The industrial camera can take pictures of the display screen of the smart cockpit, and convert the pictures into digital signals that can be recognized by the industrial computer through the photosensitive component circuit and control component inside the industrial camera, and then transmit them to the industrial computer; the image analysis software in the industrial computer analyzes the collected display screen to determine whether there are problems such as black screen and flickering screen.

[0067] Once a problem is detected, the simulated cockpit entertainment system will automatically determine and record the problem site, suspend the test, and upload the detailed target log file to the industrial computer to analyze the root cause of the problem (this part corresponds to Figure 2 in log export).

[0068] It can be seen from the introduction of the above embodiments that the simulated cockpit entertainment system has the following functions:

[0069] First, simulate the power supply voltage waveform: Through the industrial computer and programmable power supply in the cockpit entertainment system, the dynamic change waveform of the engine or battery voltage can be accurately simulated, which has high flexibility and adaptability. Users can customize the voltage waveform according to test requirements to achieve a full range of simulations from stable operation to transient changes, and provide a real and controllable power supply environment for various test scenarios.

[0070] Second, accurate playback of real vehicle CAN signals: Through the industrial computer and CAN board in the cockpit entertainment system, in-depth analysis of real vehicle CAN messages can be achieved, and based on the key message data obtained from the analysis, the control signal for the CAN board is generated to achieve precise control of message timing and trigger conditions. This ensures that the cycle of the playback node of the message data is highly consistent with the real-time requirements, and can achieve high-fidelity simulation of the vehicle communication network, providing strong support for fault diagnosis, performance evaluation and system integration testing.

[0071] Third, the real-time response of the relay board is realized: through the industrial computer and relay board in the cockpit entertainment system, the power-on and power-off status of the relay board is automatically managed, ensuring rapid adaptation to various changes in conditions during the test process, making the construction and adjustment of the test environment faster and easier, greatly improving the efficiency and flexibility of the test.

[0072] Fourth, image acquisition and problem identification: Through the industrial computer and image acquisition device in the cockpit entertainment system, the image of the display screen of the device to be tested is acquired, and the key problems (such as black screen) in the test process are quickly identified based on the acquired images. Based on the results of the rapid identification, the technicians can determine the process of subsequent test operations, whether to ignore the problem and continue the test, or to pause the test and analyze the cause of the problem.

[0073] In summary, the combination of the simulated cockpit entertainment system and the real vehicle CAN message can quickly restore the real test scene and test environment of the real vehicle corresponding to the real vehicle CAN message. In this way, on the one hand, occasional cockpit problems in the test process can be turned into inevitable problems and the root cause of the problem can be found. On the other hand, the disadvantage of the traditional solution that simulation testing must be performed on the real vehicle can be solved, which can reduce the testing cost.

[0074] Long-mileage testing of vehicle cockpits refers to long-term, long-distance driving tests on vehicles to evaluate key indicators such as performance, reliability, durability, and actual cruising range under various working conditions. The traditional method of long-mileage testing of vehicle cockpits is to maintain the vehicle speed at around 120 km / h and arrange two people (a driver and a tester) to drive on the road for a long time to conduct long-mileage testing of the vehicle cockpit. This method has a long test cycle and high test costs.

[0075] In order to reduce the test cycle and test cost of long-mileage testing of vehicle cockpits, the present application also provides an experimental scheme for conducting long-mileage testing of vehicles based on real vehicle CAN messages and a simulated cockpit entertainment system. Figure 3 A flowchart of a vehicle long mileage testing method provided in an embodiment of the present application.

[0076] Combination Figure 3 As shown, the method for performing a long mileage test on a vehicle disclosed in the present application includes:

[0077] S301, obtain the real vehicle CAN message and test script.

[0078] As mentioned above, CAN messages are data frames for communication between various control units inside the vehicle. These messages contain various information about the vehicle during operation, such as speed, temperature, voltage, current, etc. Real vehicle CAN messages are data messages collected from real running vehicles, including but not limited to: vehicle speed messages, wheel speed messages, gear messages, power mode messages and other message data.

[0079] A test script is a set of instructions written into a program, which is used to automatically execute test cases. It can simulate the manual testing process and perform automated testing on the software.

[0080] S302, marking the actual vehicle CAN message at multiple preset time points to obtain a target CAN message.

[0081] This step refers to that after obtaining the real vehicle CAN message, at multiple preset key time points, such as the time point when the vehicle has traveled 10,000 kilometers, the time point when the vehicle has traveled 20,000 kilometers, and other time points, the real vehicle CAN message is marked with a test label to obtain the target CAN message.

[0082] S303: Based on the target CAN message, the test script and the simulated cockpit entertainment system, a long mileage test is performed on the device to be tested.

[0083] The cockpit entertainment system and the device under test are established as follows Figure 2After the connection relationship between them is established, the target CAN message is input into the industrial computer of the cockpit entertainment system to restore the real vehicle test scenario corresponding to the target CAN message, and then the vehicle is subjected to a long mileage test through the test script.

[0084] When the test process runs to multiple preset time points, the target image of the display screen of the cockpit entertainment system is obtained through the image acquisition device; the industrial control host determines whether the display screen of the device to be tested is black by analyzing the color of the target image; the industrial control host determines whether the long-mileage test data of the device to be tested is accurate by analyzing the difference between the target image and the reference image.

[0085] Figure 4 A schematic diagram of a long mileage test report for a vehicle provided in an embodiment of the present application. Figure 4 IVI stands for instrument panel and IPK stands for entertainment system. Figure 4 The horizontal axis of the two figures is time, and the vertical axis is average vehicle speed. Figure 4 The IVI current trip-average speed in the dashboard represents the average speed of the current trip of the dashboard. The images of the vehicle dashboard at different times can be captured by an image acquisition device, and the speed value of the vehicle running is extracted from each image, and then a graph of the IVI current trip-average speed is drawn (i.e., the reference image mentioned in the above embodiment); Figure 4 The IPK current trip-average speed in the diagram represents the average speed of the current trip displayed on the entertainment screen of the device to be tested. The entertainment screen of the device to be tested at different times, that is, the image of the display screen, can be photographed by an image acquisition device, and the speed value of the device to be tested at that time can be extracted from each image, and then the IPK current trip-average speed chart can be drawn. By comparing whether the two images are the same, it is determined whether the test data obtained during the long-mileage test of the vehicle, that is, the value of the IPK current trip-average speed, is accurate.

[0086] Figure 5 A schematic diagram of a long mileage test report for another vehicle provided in an embodiment of the present application. Figure 5 IVI stands for instrument panel and IPK stands for entertainment system. Figure 5 The horizontal axis of the two figures is time, and the vertical axis is average fuel consumption. Figure 5 The IVI current trip - average fuel consumption in the dashboard represents the average fuel consumption of the current trip. The image acquisition device can be used to capture images of the vehicle dashboard at different times, extract the fuel consumption value of the vehicle at that time from each image, and then draw a graph of the IVI current trip - average fuel consumption (i.e., the reference image mentioned in the above embodiment); Figure 5The IPK current trip-average fuel consumption in the test device represents the average fuel consumption of the current trip displayed on the entertainment screen of the device to be tested. The entertainment screen of the device to be tested at different times, that is, the image of the display screen, can be photographed by an image acquisition device, and the fuel consumption value of the vehicle at that time can be extracted from each image, and then the IPK current trip-average fuel consumption chart can be drawn. By comparing whether the two images are the same, it is determined whether the test data obtained during the long-mileage test of the vehicle, that is, the value of the IPK current trip-average fuel consumption, is accurate.

[0087] Figure 6 A schematic diagram of a long mileage test report for another vehicle provided in an embodiment of the present application. Figure 6 IVI stands for instrument panel and IPK stands for entertainment system. Figure 6 The horizontal axis of the two figures is time, and the vertical axis is subtotal mileage. The subtotal mileage of the vehicle refers to the function on the car dashboard that is used to record the mileage of each trip of the user. The subtotal mileage can record the distance from point A to point B, or the distance traveled by the vehicle after a full tank of gas, providing the owner with the convenience of calculating the mileage of each trip.

[0088] Figure 6 The IVI current trip-subtotal mileage in the diagram represents the subtotal mileage of the current trip on the dashboard. Images of the vehicle dashboard at different times can be captured by an image acquisition device, and the subtotal mileage of the vehicle at that time can be extracted from each image. Then, a diagram of the IVI current trip-subtotal mileage (i.e., the reference image mentioned in the above embodiment) can be drawn. Figure 6 The IPK current trip-subtotal mileage in the figure represents the subtotal mileage of the current trip displayed on the entertainment screen of the device to be tested. The entertainment screen of the device to be tested at different times, that is, the image of the display screen, can be photographed by an image acquisition device, and the subtotal mileage of the vehicle at that time can be extracted from each image, and then a chart of the IPK current trip-subtotal mileage can be drawn. By comparing whether the two images are the same, it is determined whether the test data obtained during the long-mileage test of the vehicle, that is, the value of the IPK current trip-subtotal mileage, is accurate.

[0089] It is understandable that during the long-mileage test of the vehicle, the use of the industrial computer and image acquisition device of the cockpit entertainment system to capture images and identify problems, and real-time detection of long-mileage endurance data can improve the test accuracy and granularity; capturing real-time data through the image acquisition device and performing intelligent extraction to generate graphical test charts can make the test results clearer.

[0090] In an optional implementation, after obtaining the real vehicle CAN message, the real vehicle CAN message can be reprocessed, such as changing the vehicle speed value from 120km / h to 220km / h to obtain a processed real vehicle CAN message; then based on the processed real vehicle CAN message and Figure 3 According to the method described in, a long mileage test is performed on the vehicle; thus, the test time of the long mileage test of the vehicle can be reduced.

[0091] It can be understood that to test the equipment to be tested using the simulated cockpit entertainment system disclosed in this application, only a cockpit controller and a display screen are required, without the need for real vehicles and experimenters to participate, thereby reducing testing costs; by restoring the real test environment, the accuracy and reliability of the test results are ensured, and while improving test efficiency, the test cost is optimized.

[0092] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A simulated cockpit entertainment system, characterized in that: The system comprises: an industrial computer, a program-controlled power supply, a CAN board and a relay board, wherein the program-controlled power supply, the CAN board and the relay board are all connected to the industrial computer; the program-controlled power supply is connected to the relay board; The industrial computer is used to parse the real vehicle CAN message to obtain target data; and according to the target data, send a first control signal to the programmable power supply, send a second control signal to the CAN board, and send a power mode signal and a third control signal to the relay board; the real vehicle CAN message is a CAN message collected during the actual operation of the vehicle; The programmable power supply is used to output a power waveform and a voltage value matching the actual vehicle CAN message according to the first control signal; The CAN board is used to output a simulated CAN message matching the real vehicle CAN message according to the second control signal; The relay board is used to control the closing and opening of the relay according to the power mode signal and the third control signal.

2. The system according to claim 1, characterized in that The system also includes an image acquisition device; the image acquisition device is connected to the industrial computer; The image acquisition device is used to capture the image of the display screen of the device to be tested, and transmit the captured image of the display screen to the industrial computer; The industrial computer is also used to determine whether there is a problem with the device to be tested based on the image on the display screen.

3. The system according to claim 2, characterized in that The system further comprises a digital I / O board; the digital I / O board is integrated in the CAN board; The digital I / O board is used to simulate the switch signal of the actual vehicle according to the second control signal.

4. The system according to claim 2, characterized in that The industrial computer is also used to analyze the target log file to determine the cause of the problem generated by the device to be tested during the test process; the target log file is a file generated by simulating the test of the device to be tested based on the system and the real vehicle CAN message.

5. A vehicle simulation test method, characterized in that: The test method includes: Obtaining real vehicle CAN messages; the real vehicle CAN messages are CAN messages collected during the actual operation of the vehicle; By simulating the cockpit entertainment system, the operating scenario of the target vehicle is restored on the device to be tested according to the real vehicle CAN message; the target vehicle is the vehicle that generates the real vehicle CAN message; the simulated cockpit entertainment system is the system described in any one of claims 1-4.

6. A vehicle long mileage testing method, characterized in that: The test method includes: Obtaining real vehicle CAN messages and test scripts; the real vehicle CAN messages are CAN messages collected during the actual operation of the vehicle; Marking the actual vehicle CAN message at multiple preset time points to obtain a target CAN message; Based on the target CAN message, the test script and the simulated cockpit entertainment system, a long mileage test is performed on the device to be tested; the simulated cockpit entertainment system is the system described in any one of claims 2-4.

7. The method according to claim 6, characterized in that The long mileage test of the device to be tested based on the target CAN message, the test script and the simulated cockpit entertainment system includes: At the plurality of preset time points, a target image of the display screen of the device to be tested is acquired by an image acquisition device; the image acquisition device is an image acquisition device in the simulated cockpit entertainment system according to any one of claims 2 to 4; Based on the target image, it is determined whether the device to be tested has a problem.

8. The method according to claim 7, characterized in that The step of judging whether the device to be tested has a problem based on the target image includes: By analyzing the color of the target image, it is determined whether the display screen of the device to be tested is abnormal.

9. The method according to claim 7, characterized in that: The step of judging whether the device to be tested has a problem based on the target image includes: By analyzing the difference between the target image and the reference image, it is determined whether the long mileage test data of the device to be tested is accurate; the reference image is an image generated based on the displayed values ​​on the dashboard of the vehicle at different times.

10. The method according to claim 6, characterized in that After obtaining the real vehicle CAN message, the method further includes: Reprocessing the actual vehicle CAN message to obtain a reprocessed actual vehicle CAN message; the vehicle speed of the reprocessed actual vehicle CAN message is greater than the vehicle speed of the actual vehicle CAN message; The step of marking the actual vehicle CAN message at a plurality of preset time points to obtain a target CAN message includes: The reprocessed real vehicle CAN message is marked at the plurality of preset time points to obtain the target CAN message.

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