Whole vehicle test measurement and control system

Abstract

The invention discloses a whole vehicle test measurement and control system, and the system comprises a test operation module which is used for operating and setting an accelerator opening and voltage correspondence table, a brake pedal position and voltage correspondence table, and a gear and logic information correspondence table; the driving logic generation module is used for acquiring a driving condition curve of a test vehicle, determining vehicle speed information, acceleration information, accelerator opening information and brake opening information of vehicle driving according to the driving condition curve and the set accelerator opening and voltage correspondence table, brake pedal position and voltage correspondence table and gear and logic information correspondence table, and outputting the determined information to the test vehicle according to the vehicle speed information, the acceleration information, the accelerator opening information and the brake opening information. A driving logic table is generated; the terminal control module is used for sending accelerator opening degree information, brake pedal position information and gear information to the driving robot module; and the driving robot module is used for operating and controlling the vehicle operation test according to the accelerator opening information, the brake pedal position information and the gear information, so that the accuracy and intelligence of the whole vehicle performance test are improved, and the measurement and control efficiency of the whole vehicle test is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle test, in particular to a whole vehicle test measurement and control system. BACKGROUND

[0002] In the process of automobile research and development, the performance of the whole vehicle needs to be tested and verified, which requires the establishment of a physical model matched with the relevant automobile performance and the performance test on the hub bench. In the whole vehicle performance test, tests such as constant speed and working condition endurance mileage need to be carried out, and the whole vehicle needs to run with a specific working condition curve, that is, the vehicle model needs to run at a specific speed, and the speed needs to be adjusted according to the need to be the same as the set speed in the working condition curve.

[0003] However, in the current whole vehicle performance test, the test is mainly carried out by the driver driving the test vehicle, therefore, the input of the speed is realized by the driver stepping on the accelerator pedal, when the set speed needs to be maintained, the skill of the test driver is required, the test time is long, the workload of the driver is huge, at the same time, the operation of the driver will greatly affect the test result, the test result is greatly affected by subjective factors, and the test accuracy is poor. SUMMARY

[0004] The embodiment of the present application provides a whole vehicle test measurement and control system, to solve the technical problem that in the current whole vehicle performance test, the test is mainly carried out by the driver driving the test vehicle, the test time is long, the workload of the driver is huge, at the same time, the driving operation of the driver will greatly affect the test result, the test result is greatly affected by subjective factors, and the test accuracy is poor.

[0005] Therefore, the present application provides a whole vehicle test measurement and control system, which comprises a test operation module, a driving logic generation module, a terminal control module and a driving robot module; The test operation module is used for operating and setting a throttle opening degree and voltage corresponding table, a brake pedal position and voltage corresponding table and a gear and logic information corresponding table, and sending the set throttle opening degree and voltage corresponding table, brake pedal position and voltage corresponding table and gear and logic information corresponding table to the terminal control module. The driving logic generation module is used for acquiring a test vehicle running working condition curve, and determining speed information, acceleration information, throttle opening degree information and brake opening degree information of the vehicle running according to the running working condition curve and the set throttle opening degree and voltage corresponding table, brake pedal position and voltage corresponding table and gear and logic information corresponding table, and generating a driving logic table and sending it to the terminal control module. The terminal control module is configured to send throttle opening degree information, brake pedal position information and gear information to the driving robot module according to the driving logic table and the set throttle opening degree-voltage correspondence table, brake pedal position-voltage correspondence table and gear-logic information correspondence table. The driving robot module is configured to operate and control vehicle running test according to the throttle opening degree information, brake pedal position information and gear information.

[0006] Optionally, the system further comprises a detection module, a judgment module and a hub control module.

[0007] Optionally, the driving robot module is further configured to send the throttle opening degree information, brake pedal position information and gear information to the vehicle controller. The detection module is configured to enable the vehicle controller to generate control information detection messages according to the throttle opening degree information, brake pedal position information and gear information, and send the control information detection messages to the terminal control module through a CAN bus. The terminal control module is further configured to detect whether the control information is correct according to the control information detection messages and the driving logic table, and re-send new control information if the control information is not correct.

[0008] Optionally, the judgment module is configured to acquire state information of the test vehicle, and determine whether the test vehicle meets driving requirements according to the state information, and report a driving fault message if the test vehicle does not meet the driving requirements, wherein the state information comprises an ignition key state, a vehicle fault state and a vehicle start-stop state.

[0009] Optionally, the hub control module is configured to control the hub control device to control hub braking to gradually slow down the vehicle according to the brake pedal position information when the brake pedal position information is sent to the hub control device.

[0010] Optionally, the hub control device comprises a PID adjustment module, a throttle input interface of a low-voltage wire harness connector of a throttle pedal of the test vehicle, a brake input interface plugged with a low-voltage wire harness connector of a brake pedal of the test vehicle, a throttle output interface, a brake output interface and a CAN communication interface connected with the vehicle controller, and a power supply interface connected with a power supply, wherein the throttle input interface, the brake input interface, the throttle output interface, the brake output interface and the CAN communication interface are connected to the PID adjustment module.

[0011] Optionally, the PID adjustment module is configured to adjust information voltage values of the throttle pedal and the brake pedal to adjust opening degree values of the throttle pedal and the brake pedal until the actual test vehicle speed is equal to the vehicle speed of the test vehicle running condition curve.

[0012] From the above technical solution can be seen, the embodiments of the present application have the following advantages: The whole vehicle test measurement and control system provided by the application has the advantages that: compared with the prior art, the test operation module is used for operating and setting the throttle opening degree and voltage corresponding table, the brake pedal position and voltage corresponding table, and the gear and logic information corresponding table, and the set throttle opening degree and voltage corresponding table, the brake pedal position and voltage corresponding table, and the gear and logic information corresponding table are sent to the terminal control module; the driving logic generation module is used for acquiring a test vehicle driving condition curve, and determining vehicle speed information, acceleration information, throttle opening degree information, and brake opening degree information according to the driving condition curve and the set throttle opening degree and voltage corresponding table, the brake pedal position and voltage corresponding table, and the gear and logic information corresponding table, and generating a driving logic table and sending the driving logic table to the terminal control module; the terminal control module is used for sending throttle opening degree information, brake pedal position information, and gear information to the driving robot module according to the driving logic table and the set throttle opening degree and voltage corresponding table, the brake pedal position and voltage corresponding table, and the gear and logic information corresponding table; and the driving robot module is used for operating and controlling vehicle operation test according to the throttle opening degree information, the brake pedal position information, and the gear information, so that the network security of the vehicle is monitored in real time to timely understand the network security state of the vehicle, and the hidden vulnerabilities in the network information and the built-in system of the vehicle are found in time and repaired in time, and the problems that the driver needs to control the vehicle operation according to the set condition requirements in the performance test of the existing whole vehicle, the test requires a long time, the operation action is complicated and the control precision is high, the driver is easy to be physically and mentally tired, and the control precision is not high, can be solved, so that the accuracy and intelligence of the whole vehicle performance test can be improved, and the efficiency of the whole vehicle test measurement and control can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly express the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creating laborious work.

[0014] Figure 1 The system block diagram of the whole vehicle test measurement and control system provided in the embodiments of the application. DETAILED DESCRIPTION

[0015] In order to make the personnel in the technical field better understand the application scheme, the technical solutions in the embodiments of the application will be clearly and completely described in the following with reference to the drawings in the embodiments of the application.

[0016] In order to facilitate understanding, please refer toFigure 1 The application provides an embodiment of a whole vehicle test measurement and control system, comprising a test operation module, a driving logic generation module, a terminal control module and a driving robot module; the test operation module is configured to operate a throttle opening degree and voltage correspondence table, a brake pedal position and voltage correspondence table, and a gear and logic information correspondence table, and send the throttle opening degree and voltage correspondence table, the brake pedal position and voltage correspondence table, and the gear and logic information correspondence table to the terminal control module; the driving logic generation module is configured to obtain a vehicle driving condition curve, and determine vehicle speed information, acceleration information, throttle opening degree information and brake opening degree information according to the driving condition curve and the throttle opening degree and voltage correspondence table, the brake pedal position and voltage correspondence table, and the gear and logic information correspondence table, and generate a driving logic table and send it to the terminal control module; the terminal control module is configured to send throttle opening degree information, brake pedal position information and gear information to the driving robot module according to the driving logic table and the throttle opening degree and voltage correspondence table, the brake pedal position and voltage correspondence table, and the gear and logic information correspondence table; the driving robot module is configured to operate and control vehicle running test according to the throttle opening degree information, brake pedal position information and gear information; the embodiment can solve the problems that in the performance test of the existing whole vehicle, the driver needs to control the vehicle running according to the set condition requirements, the test requires a long time, the operation action is complicated and the control precision is high, the driver is easy to be physically and mentally tired, and the control precision is not high, and therefore the embodiment can improve the accuracy and intelligence of the whole vehicle performance test, and improve the efficiency of the whole vehicle test measurement and control.

[0017] Specifically, the vehicle speed, acceleration, throttle opening degree and brake opening degree during vehicle driving are determined according to the condition curve to form an automatic driving logic table, comprising: obtaining corresponding time and vehicle speed according to the condition curve; calculating the acceleration of the vehicle according to the change relationship between time and vehicle speed; calculating the traction of the vehicle according to the acceleration and the mass of the vehicle, obtaining the transmission coefficient efficiency and the main reduction ratio coefficient of the vehicle, and calculating the throttle opening degree driving force and the brake opening degree driving force of the vehicle; determining the throttle opening degree and the brake opening degree according to the throttle opening degree driving force and the brake opening degree driving force.

[0018] More specifically, the vehicle speed, acceleration, throttle opening degree and brake opening degree during vehicle driving are determined according to the condition curve to form a driving logic table, further comprising: establishing a relationship table of vehicle speed, acceleration, throttle opening degree and brake opening degree at each time according to the condition curve; and forming a driving logic table corresponding to the condition curve according to the relationship table.

[0019] As a further scheme of the application, the application further comprises a detection module, a judgment module and a hub control module. The driving robot module is further configured to send throttle opening degree information, brake pedal position information and gear information to a vehicle control unit; the detection module is configured to cause the vehicle control unit to generate control information detection messages according to the throttle opening degree information, brake pedal position information and gear information, and send the control information detection messages to the terminal control module through a CAN bus; and the terminal control module is further configured to detect whether the control information is correct according to the control information detection messages and the driving logic table, and re-send new control information if the control information is not correct.

[0020] Specifically, since the manufacturers of the throttle pedal, brake pedal and gear handle used by different vehicles are different, there are differences in the electrical principles, and thus the correctness of the sent information needs to be confirmed. The information to be detected includes throttle opening degree information with a step of 1% from 0% to 100%, brake pedal switch information, brake pedal opening degree information with a step of 1% from 0% to 100%, and gear information of R, N and D. If the voltage information does not correspond to the throttle opening degree or the pedal opening degree, the terminal control module re-sends the throttle opening degree information or the brake pedal opening degree information to the vehicle control module.

[0021] Further, the judgment module is configured to acquire state information of the test vehicle, and judge whether the test vehicle meets the driving requirements according to the state information, and report a driving fault message if the test vehicle does not meet the driving requirements, wherein the state information includes an ignition key state, a vehicle fault state and a vehicle start-stop state.

[0022] Specifically, the state information of the test vehicle can be acquired by the vehicle control unit, and sent to the terminal control module through a CAN bus, TCP / IP or RS-485 communication. The terminal control module can judge whether the vehicle meets the automatic driving requirements according to the preset conditions.

[0023] Further, the hub control module is configured to control the hub control device to control the hub brake according to the brake pedal position information to gradually slow down the vehicle when the brake pedal position information is sent to the hub control device.

[0024] Specifically, when the vehicle travels to a deceleration working condition, a chassis dynamometer (hub) needs to be used to realize the vehicle braking function. The chassis dynamometer (hub) has SIM, V and F modes. The SIM mode is used to simulate vehicle road travel, the V mode is used for constant speed travel of the vehicle, and the F mode is used for constant force travel of the vehicle. To realize the vehicle braking function, the working mode of the chassis dynamometer (hub) needs to be converted from the SIM mode to the V mode, and then the speed information is sent at a high frequency according to the deceleration requirement to realize the hub braking of the vehicle. After braking, the working mode needs to be switched to the SIM mode.

[0025] Further, the hub control device comprises a PID adjustment module, an accelerator input interface plugged into a low-voltage wire harness connector of an accelerator pedal of the test vehicle, a brake input interface plugged into a low-voltage wire harness connector of a brake pedal of the test vehicle, an accelerator output interface and a brake output interface connected with a vehicle controller, and a CAN communication interface, and a power supply interface connected with a power supply, wherein the accelerator input interface, the brake input interface, the accelerator output interface, the brake output interface and the CAN communication interface are connected to the PID adjustment module. The PID adjustment module is configured to adjust information voltage values of the accelerator pedal and the brake pedal to adjust opening degree values of the accelerator pedal and the brake pedal until the actual test vehicle speed is equal to the vehicle speed of the test vehicle driving condition curve.

[0026] Specifically, the actual test vehicle speed can be sent to the PID adjustment module by the vehicle controller through the CAN communication interface. If the actual test vehicle speed cannot be obtained by parsing the CAN message, the hub control device can be connected to the hub test bench, and the actual test vehicle speed can be directly sent to the PID adjustment module through the test bench.

[0027] Specifically, after the hub control device is connected to the test vehicle, the test vehicle is started, and the accelerator pedal and the brake pedal are operated by the driving robot. At this time, the PID adjustment module of the hub control device can receive the information voltage values of the accelerator pedal and the brake pedal. At the same time, the opening degree values of the accelerator pedal and the brake pedal can be obtained through the CAN communication interface.

[0028] Specifically, in the test vehicle driving condition curve, there are two processes of acceleration and deceleration. Therefore, for the two processes, the information voltage values of the accelerator pedal and the brake pedal can be adjusted to adjust the opening degree values of the accelerator pedal and the brake pedal, so that the actual test vehicle speed can be equal to the vehicle speed of the condition curve.

[0029] Specifically, when the actual test vehicle speed is less than the vehicle speed of the condition curve during the test process, the opening degree of the accelerator pedal needs to be increased to increase the actual test vehicle speed. The information voltage value of the accelerator pedal is adjusted by the PID adjustment module to increase the opening degree value of the accelerator pedal, and the information voltage value of the brake pedal is adjusted to make the opening degree value of the brake pedal zero. At this time, the actual test vehicle speed is increased, and the opening degree values of the accelerator pedal and the brake pedal are adjusted to assist the operation of the driving robot module, improve the accuracy and intelligence of the vehicle performance test, and improve the efficiency of the vehicle test and control.

[0030] The above-described embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A vehicle test and control system, characterized in that: It includes test operation module, driving logic generation module, terminal control module and driving robot module; The test operation module is used to operate and set the throttle opening and voltage correspondence table, the brake pedal position and voltage correspondence table, and the gear position and logic information correspondence table, and send the set throttle opening and voltage correspondence table, the brake pedal position and voltage correspondence table, and the gear position and logic information correspondence table to the terminal control module; The driving logic generation module is used to obtain a driving condition curve of the test vehicle, and determine the vehicle speed information, acceleration information, throttle opening information, and brake opening information of the vehicle based on the driving condition curve and the set throttle opening and voltage correspondence table, brake pedal position and voltage correspondence table, and gear position and logic information correspondence table, and generate a driving logic table and send it to the terminal control module; The terminal control module is used to send throttle opening information, brake pedal position information and gear position information to the driving robot module according to the driving logic table and the set throttle opening and voltage correspondence table, brake pedal position and voltage correspondence table, and gear position and logic information correspondence table; The driving robot module is used to operate and control the vehicle running test according to the throttle opening information, brake pedal position information and gear information.

2. A vehicle test and control system according to claim 1, characterized in that: It also includes a detection module, a judgment module and a hub control module.

3. A vehicle test and control system according to claim 2, characterized in that: The driving robot module is also used to send throttle opening information, brake pedal position information and gear position information to the vehicle controller; The detection module is used to enable the vehicle controller to generate a control information detection message according to the throttle opening information, the brake pedal position information and the gear position information, and send the control information detection message to the terminal control module via the CAN bus; The terminal control module is further configured to detect whether the control information is correct based on the control information detection message and the driving logic table, and if not, resend new control information.

4. A vehicle test and control system according to claim 3, characterized in that: The judgment module is used to obtain status information of the test vehicle and judge whether the test vehicle meets the driving requirements based on the status information. If not, a driving fault message is reported, wherein the status information includes ignition key status, vehicle fault status and vehicle start / stop status.

5. A vehicle test and control system according to claim 4, characterized in that: The rotary hub control module is used to control the rotary hub control device to control the rotary hub brake according to the brake pedal position information to gradually decelerate the vehicle when the brake pedal position information is sent to the rotary hub control device.

6. A vehicle test and control system according to claim 5, characterized in that: The hub control device includes a PID adjustment module, a throttle input interface plugged into the low-voltage wiring harness connector of the throttle pedal of the test vehicle, a brake input interface plugged into the low-voltage wiring harness connector of the brake pedal on the test vehicle, a throttle output interface, a brake output interface and a CAN communication interface all connected to the vehicle controller, and a power supply interface connected to the power supply. The throttle input interface, brake input interface, throttle output interface, brake output interface and CAN communication interface are all connected to the PID adjustment module.

7. A vehicle test and control system according to claim 6, characterized in that: The PID adjustment module is used to adjust the information voltage values ​​of the accelerator pedal and the brake pedal to adjust the opening values ​​of the accelerator pedal and the brake pedal until the actual test vehicle speed is equal to the speed of the test vehicle driving condition curve.

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