A vehicle test simulation system

Abstract

The present invention discloses a vehicle test simulation system, which includes: a host computer, a vehicle test simulation system and a vehicle controller module; the vehicle test simulation system is connected to the host computer via Ethernet communication, the host computer is used to input test information, and the test information generates a test instruction and sends it to the vehicle test simulation system; the vehicle test simulation system is connected to the vehicle controller module via a hard line, the vehicle test simulation system is used to parse the test instruction, obtain test parameters, and send the test parameters to the vehicle controller module, so that the vehicle controller module adjusts each controller based on the test parameters, and sends the operation data of the vehicle controller to the host computer, so that the host computer determines whether the vehicle controller module is abnormal based on the operation data. The problem of inaccurate testing of the vehicle controller module is solved, and the vehicle controller module is tested quickly and accurately, and the test is not prone to errors.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of automobile technology, and in particular to a vehicle test simulation system. Background Art

[0002] By increasing the vehicle's wheelbase, the vehicle's riding space can be made more comfortable, but the ever-lengthening wheelbase will have a negative impact on the vehicle's handling.

[0003] In order to compensate for the impact of the increased wheelbase on vehicle handling, a rear axle steering control system can be added to the vehicle to receive the vehicle's dynamic driving signals and comprehensively judge and output the appropriate steering angle. In order to determine whether the rear axle steering control system can output an accurate steering angle, it is necessary to test the rear axle steering control system during the vehicle's development phase to ensure that the vehicle can operate normally and reliably when driving at high speeds. At present, the rear axle steering control system of a vehicle is usually tested by human actual vehicle testing, but such a testing method has the problems of low testing efficiency, high risk and low accuracy.

[0004] In order to test the vehicle's rear axle steering control system more accurately, the test method of the rear axle steering control system needs to be improved. Summary of the invention

[0005] The present invention provides a vehicle test simulation system, which has the effect of quickly and accurately testing the vehicle controller module.

[0006] In a first aspect, an embodiment of the present invention provides a vehicle test simulation system, the vehicle test simulation system comprising:

[0007] Host computer, vehicle test simulation system and vehicle controller module;

[0008] The vehicle test simulation system is connected to the host computer via Ethernet communication, and the host computer is used to input test information and generate test instructions from the test information and send them to the vehicle test simulation system;

[0009] The vehicle test simulation system is connected to the vehicle controller module via a hard wire. The vehicle test simulation system is used to parse the test instructions to obtain test parameters, and send the test parameters to the vehicle controller module so that the vehicle controller module adjusts each controller based on the test parameters, and sends the operating data of the vehicle controller to the host computer so that the host computer determines whether the vehicle controller module is abnormal based on the operating data.

[0010] Furthermore, the host computer includes: a test information input module, a test instruction generation module, a test instruction sending module and an operation data receiving module;

[0011] The test information input module is used to input at least one test information of a test case, a test plan, a test scenario and a test question list based on the target display interface of the host computer;

[0012] The test instruction generating module is used to generate a test instruction based on the at least one test information;

[0013] The test instruction sending module is used to send the test instruction to the vehicle test simulation system through the Ethernet communication;

[0014] The operation data receiving module is used to receive the operation data fed back by the vehicle test simulation system; wherein the operation data is the data sent by the vehicle controller to the vehicle test simulation system.

[0015] Further, the vehicle test simulation system includes a real-time processor, a CAN board, a power control board and an input and output board;

[0016] The real-time processor is connected to the host computer via an Ethernet communication protocol, the real-time processor is connected to the CAN board via a PCle bus, the real-time processor is connected to the power control board via CAN communication, and the real-time processor is connected to the input and output board via a PCle bus;

[0017] Furthermore, the real-time processor includes a driver model, a vehicle dynamics model and an IO model.

[0018] Further, the driver model is used to identify the communication interface in the test instruction and send the test instruction to the vehicle dynamics model through the target communication interface;

[0019] The vehicle dynamics model is used to parse the test information in the test instruction, control the vehicle body posture based on the test information, determine the test parameters corresponding to the vehicle body posture, and send the test parameters to the IO model;

[0020] The IO model is used to receive the test parameters and send the test parameters to the vehicle controller module through a CAN board.

[0021] Furthermore, the IO model is used to send the displacement parameters collected by the vehicle controller module to the vehicle dynamics model, so that the vehicle dynamics model converts the displacement parameters into a turning angle signal, and sends the turning angle signal to the host computer;

[0022] The IO model is also used to send the torque parameters collected by the vehicle controller module to the host computer through the input and output board.

[0023] Furthermore, the vehicle controller module includes a damping shock absorber 1, a damping shock absorber 2, a displacement sensor and a torque sensor:

[0024] The damping shock absorber 1 and the damping shock absorber 2 are connected to two ends of the vehicle controller through a coupling to simulate the load information of the vehicle controller;

[0025] The displacement sensor is used to collect the displacement parameters of the coupling of the vehicle controller;

[0026] The torque sensor is used to collect the torque parameters generated by the vehicle controller during operation.

[0027] Furthermore, the vehicle controller module includes an operation data sending module:

[0028] The operation data sending module is used to send the displacement parameters collected by the displacement sensor and the torque parameters collected by the torque sensor to the host computer.

[0029] Furthermore, the operation data sending module is used to send the displacement parameter to the vehicle dynamics model through the IO model, so that the vehicle dynamics model converts the displacement parameter into a turning angle signal, and sends the turning angle signal to the host computer;

[0030] The operation data sending module is also used to send the torque parameter to the host computer through the input and output board.

[0031] Furthermore, after receiving the rotation angle signal and the torque parameter, the host computer compares the rotation angle signal and the torque parameter based on the data comparison module in the operation data receiving module to determine whether the vehicle controller module is abnormal.

[0032] The embodiments of the above invention have the following advantages or beneficial effects:

[0033] The vehicle test simulation system provided by an embodiment of the present invention includes a host computer, a vehicle test simulation system and a vehicle controller module; wherein the vehicle test simulation system is connected to the host computer via Ethernet communication, the host computer is used to input test information, and generate test instructions from the test information and send them to the vehicle test simulation system; the vehicle test simulation system is connected to the vehicle controller module via a hard wire, the vehicle test simulation system is used to parse the test instructions, obtain test parameters, and send the test parameters to the vehicle controller module, so that the vehicle controller module adjusts each controller based on the test parameters, and sends the operating data of the vehicle controller to the host computer, so that the host computer determines whether the vehicle controller module is abnormal based on the operating data. The vehicle test simulation system parses the test instructions sent by the host computer, and the real-time processor in the vehicle test simulation system parses the test instructions to obtain test parameters, and adjusts the body posture of the simulated vehicle model according to the test parameters, so as to send the parameter information corresponding to the body posture to the vehicle controller module, and each controller in the vehicle controller module collects information such as displacement parameters and torque parameters, and feeds back each parameter information to the host computer, which performs data comparison on the acquired parameter information and generates a corresponding test report to determine whether there is an abnormality in the vehicle controller module. Based on the vehicle test simulation system, a fast and accurate test of the vehicle controller module is achieved, and the test is not prone to errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the following briefly introduces the drawings required to describe the embodiments. Obviously, the drawings introduced are only drawings of a part of the embodiments to be described in the present invention, rather than all the drawings. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 A schematic diagram of the structure of a vehicle test simulation system provided in Embodiment 1 of the present invention;

[0036] Figure 2 A schematic diagram of the structure of a host computer provided in the first embodiment of the present invention;

[0037] Figure 3 A schematic diagram of the structure of a vehicle test simulation system provided in Embodiment 1 of the present invention;

[0038] Figure 4 A schematic diagram of the structure of a real-time processor provided in Embodiment 1 of the present invention;

[0039] Figure 5A schematic diagram of the structure of a vehicle controller module provided in Embodiment 1 of the present invention;

[0040] Figure 6 This is a schematic structural diagram of a vehicle test simulation system without a displacement sensor provided in Embodiment 1 of the present invention. DETAILED DESCRIPTION

[0041] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0042] Embodiment 1

[0043] Figure 1 FIG. 1 is a schematic diagram of a vehicle test simulation system provided in Embodiment 1 of the present invention. The vehicle test simulation system includes: a host computer 110, a vehicle test simulation system 120 and a vehicle controller module 130. Figure 1 .

[0044] Among them, the host computer 110 is connected to the vehicle test simulation system through Ethernet communication. The host computer 110 may include a test plan and function specification module 111, a test case design module 112, a test automation instruction module 113, a test scenario design and display module 114, and a test question list and test report generation module 115. The host computer can input test information, and generate test instructions from the test information and send them to the vehicle test simulation system 120 through Ethernet communication. The vehicle test simulation system 120 and the vehicle controller module 130 are connected by hard wires. The vehicle test simulation system 120 is used to parse the test instructions after receiving the test instructions, obtain the test parameters in the test instructions, and send the test parameters to the vehicle controller module 130. After receiving the test parameters, the vehicle controller module 130 adjusts the vehicle controller according to the test parameters, collects the operating data of each controller during operation, and feeds back the operating data generated by each controller to the host computer, so that the host computer can determine whether the vehicle controller module is abnormal according to the received vehicle control operating data.

[0045] For example, the display interface of the host computer 110 includes a test plan and function specification module 111 and a test case module 112. According to the input box in the display interface, the test plan and function specification can be input, and then the vehicle test instruction can be generated through the test automation instruction module 113. At the same time, based on the design test scenario and display module 114, the design test scenario can be input to simulate the tested vehicle for different tests, see Figure 2After generating the vehicle test instruction, the host computer 110 can send the test instruction to the vehicle test simulation system 120 through Ethernet communication, receive the operation data of each vehicle controller, and determine the status information of the vehicle controller according to the operation data of each vehicle controller. Among them, the vehicle controller can be a rear wheel steering controller.

[0046] Further, the vehicle test simulation system 120 includes a real-time processor 121, a CAN board 122, a power control board 123, and an input-output board 124. The real-time processor 121 is connected to the host computer 110 via Ethernet protocol communication, the real-time processor 121 is connected to the CAN board 122 via a PCle bus, the real-time processor 121 is connected to the power control board 123 via CAN communication or hard wire connection, the real-time processor 121 is connected to the input-output board 124 via a PCle bus, and the CAN board 122, the power control board 123, and the input-output board 124 are all connected to the vehicle controller via hard wires, see Figure 3 The real-time processor 121 includes a driver model 1211, a vehicle dynamics model 1212, an IO model 1213 and a power control model 1214, see Figure 4 After receiving the test instruction sent by the host computer 110 , the vehicle test simulation system 120 processes the test instruction through the real-time processor 121 . Specifically, the driver model 1211 in the real-time processor 121 first parses the test instruction.

[0047] Exemplarily, the user inputs the test information related to the test instruction in the display interface of the host computer 110, such as the driver operation signal, the accelerator pedal opening and closing degree, the brake pedal opening and closing degree, and the steering wheel angle. After the test instruction generated based on each test information is sent to the vehicle test simulation system 120, the test instruction is processed by the real-time processor in the vehicle test simulation system 120. It should be noted that, since the types of each test information may be different, the corresponding network interface, data interface, and IP address interface information are also different. After the real-time processor 121 receives the test instruction, the driver model 1211 in the real-time processor 121 parses the test instruction and obtains the network interface, data interface, or IP address interface in the test instruction. According to the interface information in the test instruction, the interface for sending the test instruction can be determined, that is, if the interface information in the test instruction is interface 1, the driver model sends the test instruction to the vehicle dynamics model 1212 through the specified interface 1 according to the obtained interface information. Then, after receiving the test instruction, the vehicle dynamics model 1212 can parse the test instruction, obtain the test information in the test instruction, and convert the test information into test parameter information that can be recognized by the vehicle dynamics model 1212, so as to adjust the body posture of the simulated vehicle model according to the test parameters. Exemplarily, the greater the opening and closing degree of the accelerator pedal in the test information, the higher the speed of the simulated vehicle model. For example, when the opening and closing degree of the accelerator pedal in the test information is 10%, the corresponding test parameter is 30km / h. After adjusting the body posture of the simulated vehicle model based on the test parameters, the vehicle dynamics model sends the test parameters corresponding to the body posture to the IO model 1213, so that the IO model 1213 sends the test parameters to the vehicle controller module through the CAN board 122 after receiving the test parameters.

[0048] Further, the vehicle controller module includes a damping shock absorber 1311 (ie, damping shock absorber 1), a damping shock absorber 1312 (ie, damping shock absorber 2), a displacement sensor 1313 and a torque sensor 1314, see Figure 5 The damping shock absorber 1 and the damping shock absorber 2 are connected to the two ends of the vehicle controller module 130 through a coupling to simulate the load information of the vehicle controller; the displacement sensor 1313 is used to collect the displacement parameters of the coupling of the vehicle controller, and the torque sensor 1314 is used to collect the torque parameters generated by the vehicle controller during operation.

[0049] For example, taking the vehicle controller module as a rear-wheel steering test bench as an example, the vehicle controller module includes a mechanical tie rod and a rear-wheel steering controller, the rear-wheel steering controller is connected to the damping shock absorber 1 and the damping shock absorber 2 through a coupling, and the displacement sensor 1313 and the damping shock absorber 1 are synchronously operated, and the displacement of the tie rod in the rear-wheel steering controller can be detected. It should be noted that the damping shock absorber 1 and the damping shock absorber 2 can be used to avoid the movement divergence caused by the movement of the mechanical tie rod of the rear-wheel steering controller, and can also simulate the load information transmitted to the tie rod by the rear wheel of the vehicle. Specifically, the vehicle dynamics model 1212 and the driver model 1211 running in the real-time processor 121 can simulate the steering condition of the vehicle driving, and activate the rear-wheel steering controller 130 to control the mechanical tie rod, thereby generating displacement. Then, based on the displacement sensor 1313, the displacement generated by the tie rod can be obtained, and the displacement is transmitted to the host computer 110.

[0050] It should be noted that the host computer 110 cannot directly identify the displacement signal collected by the displacement sensor 1313. Therefore, before transmitting the displacement signal to the host computer 110, the displacement signal needs to be processed first. That is, after the displacement sensor 1313 obtains the displacement signal generated by the tie rod, the displacement signal needs to be converted into a vehicle rear wheel angle signal through the IO model 1213, and then input into the vehicle dynamics model. The vehicle dynamics model 1212 then sends the converted angle signal to the host computer 110 to achieve closed-loop control of the entire vehicle test simulation system, so that the host computer 110 can identify the received angle signal.

[0051] Exemplarily, the torque sensor 1314 can be used to collect the torque parameters generated by the vehicle. According to the test parameters received by the vehicle controller 130, the rear wheel steering controller can be adjusted to turn or tilt. For example, when the steering wheel angle is 15°, the rear wheel controller simulates the vehicle turning condition according to the steering wheel angle signal. In this process, due to the uneven force on both sides of the mechanical tie rod, the force on the mechanical tie rod can be obtained according to the mechanical conversion. Then, the torque sensor 1314 can collect the torque parameters of the mechanical tie rod and directly transmit the torque parameters to the host computer 110 through the input and output board, so that the host computer 110 determines whether there is an abnormality in the vehicle controller module according to the collected torque parameters.

[0052] It is understandable that the host computer 110 also includes a data comparison module, in which a test parameter comparison table is pre-stored. According to the operating parameter information of the vehicle controller module, such as the rear wheel steering controller, recorded in the test parameter comparison table during normal operation, it can be compared with the operating data information corresponding to the vehicle controller module actually collected, and whether the vehicle controller module is abnormal can be determined based on the comparison result. Exemplarily, after receiving the rear wheel angle signal and the operating data information such as the torque parameter converted from the displacement signal, the host computer 110 retrieves the operating parameter information corresponding to each operating data from the data comparison module for comparison. If the received operating data is consistent with the parameter information in the test parameter comparison table, or belongs to the preset data interval, it can be considered that the vehicle controller module can operate normally; if the received operating data is different from the preset parameter information, or does not belong to the preset data interval, it can be considered that the vehicle controller module is abnormal. In order to facilitate the check of whether there are any abnormalities in each vehicle controller, after data comparison based on the operating data of the vehicle controller, a test question list and a test report corresponding to the vehicle controller module can be generated to determine whether the vehicle controller module can work normally based on the test report, and the abnormal module of the vehicle controller module can also be determined based on the test report.

[0053] In another embodiment, in order to determine whether the vehicle controller module 130 can operate normally, the displacement sensor 1313 in the vehicle controller module 130 can be removed, and judgment can be made only based on the torque sensor 1314 in the vehicle controller module 130. Specifically, taking the vehicle controller module as a rear-wheel steering controller as an example, according to the protocol between the internal displacement sensor provided by the rear-wheel steering gear supplier and each controller, a vehicle test simulation system, such as a hardware-in-the-loop HIL simulation system, is used to simulate the displacement sensor signal to the rear-wheel steering controller, and at the same time, the displacement sensor 1313 in the original vehicle controller is removed, so that a closed-loop simulation test of the vehicle test simulation system can be realized, see Figure 6 .

[0054] Exemplarily, the host computer 110 sends the test instruction to the vehicle controller module 120, and then the real-time processor 121 in the vehicle controller module 120 processes the test instruction. First, the driver model 1211 in the real-time processor 121 parses the test instruction to obtain the interface information corresponding to the test instruction, and then sends the test instruction to the vehicle dynamics model 1212 through the interface of the instruction. The vehicle dynamics model 1212 can obtain the test parameters in the test instruction, and adjust the body posture of the simulated vehicle according to the test parameters, and send the parameter information corresponding to the body posture to the IO model 1213, and the IO model 1213 sends the parameter information to the vehicle controller module 130 through the CAN board. Similarly, the vehicle controller module 130 can send the displacement parameters collected by the internal displacement sensor of the vehicle provided by the supplier to the vehicle dynamics model 1212, and the vehicle dynamics model further adjusts the body posture according to the displacement parameter information, and correspondingly can adjust the parameter information related to the vehicle controller module. Since the change of displacement parameter information will affect the parameter information of other controllers of the vehicle controller module, such as torque parameters, when the vehicle controller module 130 sends the torque parameters collected by the torque sensor 1314 to the host computer 110 through the input and output board, the host computer 110 can determine whether the vehicle controller module has an abnormality according to whether the torque parameters meet the preset torque parameter information. In other words, the working state of the vehicle controller module can be determined only by the torque sensor.

[0055] The vehicle test simulation system provided by an embodiment of the present invention includes a host computer, a vehicle test simulation system and a vehicle controller module; wherein the vehicle test simulation system is connected to the host computer via Ethernet communication, the host computer is used to input test information, and generate test instructions from the test information and send them to the vehicle test simulation system; the vehicle test simulation system is connected to the vehicle controller module via a hard wire, the vehicle test simulation system is used to parse the test instructions, obtain test parameters, and send the test parameters to the vehicle controller module, so that the vehicle controller module adjusts each controller based on the test parameters, and sends the operating data of the vehicle controller to the host computer, so that the host computer determines whether the vehicle controller module is abnormal based on the operating data. The vehicle test simulation system parses the test instructions sent by the host computer, and the real-time processor in the vehicle test simulation system parses the test instructions to obtain test parameters, and adjusts the body posture of the simulated vehicle model according to the test parameters, so as to send the parameter information corresponding to the body posture to the vehicle controller module, and each controller in the vehicle controller module collects information such as displacement parameters and torque parameters, and feeds back each parameter information to the host computer, which performs data comparison on the acquired parameter information and generates a corresponding test report to determine whether there is an abnormality in the vehicle controller module. Based on the vehicle test simulation system, a fast and accurate test of the vehicle controller module is achieved, and the test is not prone to errors.

[0056] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A vehicle test simulation system, characterized in that: include: Host computer, vehicle test simulation system and vehicle controller module; among them, The vehicle test simulation system is connected to the host computer via Ethernet communication, and the host computer is used to input test information and generate test instructions from the test information and send them to the vehicle test simulation system; The vehicle test simulation system is connected to the vehicle controller module via a hard line, and the vehicle test simulation system is used to parse the test instruction to obtain test parameters, and send the test parameters to the vehicle controller module so that the vehicle controller module adjusts each controller based on the test parameters, and sends the operation data of the vehicle controller to the host computer so that the host computer determines whether the vehicle controller module is abnormal based on the operation data; Wherein, the vehicle controller module is a rear-wheel steering controller, the operating data includes a rear wheel angle signal and a torque parameter converted from a displacement signal, and the host computer also includes: a data comparison module; the host computer determines whether the vehicle controller module is abnormal based on the operating data, including: after receiving the rear wheel angle signal and the torque parameter, the host computer retrieves the operating parameter information corresponding to each operating data from the data comparison module for comparison to determine whether the vehicle controller module is abnormal; wherein the data comparison module pre-stores a test parameter comparison table, and the test parameter comparison table records the operating parameter information of the rear-wheel steering controller during normal operation.

2. The system according to claim 1, characterized in that The host computer includes: a test information input module, a test instruction generation module, a test instruction sending module and an operation data receiving module; The test information input module is used to input at least one test information of a test case, a test plan, a test scenario and a test question list based on the target display interface of the host computer; The test instruction generating module is used to generate a test instruction based on the at least one test information; The test instruction sending module is used to send the test instruction to the vehicle test simulation system through the Ethernet communication; The operation data receiving module is used to receive the operation data fed back by the vehicle test simulation system; wherein the operation data is the data when the vehicle controller is running.

3. The system according to claim 1, characterized in that The vehicle test simulation system includes a real-time processor, a CAN board, a power control board and an input and output board; The real-time processor is connected to the host computer via an Ethernet communication protocol, the real-time processor is connected to the CAN board via a PCle bus, the real-time processor is connected to the power control board via CAN communication, and the real-time processor is connected to the input and output board via a PCle bus.

4. The system according to claim 3, characterized in that The real-time processor includes a driver model, a vehicle dynamics model and an IO model.

5. The system according to claim 4, characterized in that The driver model is used to identify the communication interface in the test instruction and send the test instruction to the vehicle dynamics model through the target communication interface; The vehicle dynamics model is used to parse the test information in the test instruction, control the vehicle body posture based on the test information, determine the test parameters corresponding to the vehicle body posture, and send the test parameters to the IO model; The IO model is used to receive the test parameters and send the test parameters to the vehicle controller module through a CAN board.

6. The system according to claim 5, characterized in that The IO model is used to send the displacement parameters collected by the vehicle controller module to the vehicle dynamics model, so that the vehicle dynamics model converts the displacement parameters into a rotation angle signal, and sends the rotation angle signal to the host computer; The IO model is also used to send the torque parameters collected by the vehicle controller module to the host computer through the input and output board.

7. The system according to claim 1, characterized in that The vehicle controller module includes a damping shock absorber 1, a damping shock absorber 2, a displacement sensor and a torque sensor: The damping shock absorber 1 and the damping shock absorber 2 are connected to two ends of the vehicle controller through a coupling to simulate the load information of the vehicle controller; The displacement sensor is used to collect the displacement parameters of the coupling of the vehicle controller; The torque sensor is used to collect the torque parameters generated by the vehicle controller during operation.

8. The system according to claim 7, characterized in that The vehicle controller module includes an operation data sending module: The operation data sending module is used to send the displacement parameters collected by the displacement sensor and the torque parameters collected by the torque sensor to the host computer.

9. The system according to claim 8, characterized in that The operation data sending module is used to send the displacement parameter to the vehicle dynamics model through the IO model, so that the vehicle dynamics model converts the displacement parameter into a turning angle signal, and sends the turning angle signal to the host computer; The operation data sending module is also used to send the torque parameter to the host computer through the input and output board.

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