CN115981294A - Vehicle end data testing method, system and device based on intelligent four-wheel drive control unit - Google Patents
Vehicle end data testing method, system and device based on intelligent four-wheel drive control unit Download PDFInfo
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Abstract
The invention discloses a vehicle end data testing method based on an intelligent four-wheel drive control unit. The method comprises the following steps: sending vehicle end data to an intelligent four-wheel drive control unit of the vehicle, wherein the vehicle end data is used for simulating the driving data of the vehicle in the driving process; acquiring a target signal obtained by converting vehicle end data by an intelligent four-wheel drive control unit; and determining a test result of the vehicle-end data based on the target signal, wherein the test result is used for representing whether the target signal accords with an expected signal, and the expected signal is a signal obtained by converting the vehicle-end data according to an expected operation by the intelligent four-wheel drive control unit. The invention solves the technical problem of low efficiency of testing the data of the vehicle end based on the intelligent four-wheel drive control unit.
Description
Technical Field
The invention relates to the field of data processing of vehicles, in particular to a vehicle-end data testing method, system and device based on an intelligent four-wheel drive control unit.
Background
In the modern times, with the rapid development of intelligent networked automobiles, an intelligent four-wheel drive control unit plays an important role in a power system, four-wheel drive is an actively controlled four-wheel drive system controller according to torque on demand, and a clutch is adjusted according to the information of the rotating speed difference between a front shaft and a rear shaft transmitted by a sensor to drive the front shaft and distribute the torque.
At present, when the functions of the intelligent four-wheel drive control unit are tested, the limit working condition is difficult to repeatedly test and has high danger when a real vehicle is used for testing, and partial signals are lacked when a rack is used for testing, so that all signal requirements of a controller are difficult to cover; the test period is long, and the two methods can reduce the efficiency of testing the data of the vehicle end based on the intelligent four-wheel drive control unit. Aiming at the problem of low data efficiency of the intelligent four-wheel drive control unit-based vehicle end test, an effective solution is not provided at present.
In view of the above problems, no effective solution has been proposed.
Disclosure of Invention
The embodiment of the invention provides a vehicle end data testing method, system and device based on an intelligent four-wheel drive control unit, and aims to at least solve the technical problem of low vehicle end data testing efficiency based on the intelligent four-wheel drive control unit.
According to one aspect of the embodiment of the invention, a vehicle end data testing method based on an intelligent four-wheel drive control unit is provided, and comprises the following steps: sending vehicle end data to an intelligent four-wheel drive control unit of the vehicle, wherein the vehicle end data is used for simulating driving data of the vehicle in the driving process; acquiring a target signal obtained by converting vehicle end data by an intelligent four-wheel drive control unit; and determining a test result of the vehicle-end data based on the target signal and an expected signal, wherein the test result is used for indicating whether the vehicle-end data passes the test, and the expected signal is a signal obtained by converting the vehicle-end data according to an expected operation by the intelligent four-wheel drive control unit.
Optionally, before sending the vehicle-end data to the intelligent four-wheel drive control unit of the vehicle, the method further includes: establishing a simulation model of the vehicle; based on the simulation model, the simulation model is obtained, and generating vehicle end data.
Optionally, the vehicle-end data is wheel speeds of a plurality of wheels, and the intelligent four-wheel drive control unit is configured to convert the wheel speeds of the plurality of wheels of the vehicle to obtain target signals for the plurality of wheels, where the target signals are used to indicate torque values distributed to the plurality of wheels by the intelligent four-wheel drive control unit.
Optionally, determining a test result of the vehicle-end data based on the target signal and the expected signal, including: determining that the vehicle-end data passes the test in response to the target signal being the same as the expected signal; and determining that the vehicle-end data fails the test in response to the target signal being different from the expected signal.
According to one aspect of the embodiment of the invention, a vehicle end data testing method based on an intelligent four-wheel drive control unit is provided, and comprises the following steps: receiving vehicle end data from an upper computer; the vehicle end data is used for simulating the driving data of the vehicle in the driving process; converting the vehicle end data to obtain a target signal; and sending a target signal to the upper computer, wherein the upper computer determines a test result of the vehicle-end data based on the target signal and an expected signal, the test result is used for indicating whether the vehicle-end data passes the test, and the expected signal is obtained after the intelligent four-wheel drive control unit converts the vehicle-end data according to an expected operation.
Optionally, the vehicle-end data is wheel speeds of a plurality of wheels, and the converting of the vehicle-end data to obtain the target signal includes: and converting wheel speeds of a plurality of wheels of the vehicle to obtain signals of the plurality of wheels, wherein the target signal is used for representing the torque value distributed to the plurality of wheels by the intelligent four-wheel drive control unit.
According to an aspect of the embodiment of the invention, a vehicle end data testing system based on an intelligent four-wheel drive control unit is provided, and the system comprises: the upper computer is used for generating vehicle end data and sending the vehicle end data to the intelligent four-wheel drive control unit, wherein the vehicle end data is used for simulating driving data of a vehicle in the driving process; the upper computer is also used for receiving a target signal obtained by converting the vehicle end data by the intelligent four-wheel drive control unit and determining a test result of the vehicle end data based on the target signal and an expected signal, wherein the test result is used for indicating whether the vehicle end data passes the test, and the expected signal is a signal obtained by converting the vehicle end data by the intelligent four-wheel drive control unit according to an expected operation; and the intelligent four-wheel drive control unit is used for receiving the vehicle end data, converting the vehicle end data to obtain a target signal and sending the target signal to the upper computer.
According to an aspect of the embodiment of the invention, a vehicle end data testing device based on an intelligent four-wheel drive control unit is provided, which comprises: the system comprises a sending module, a data processing module and a data processing module, wherein the sending module is used for sending vehicle end data to an intelligent four-wheel drive control unit of a vehicle, and the vehicle end data is used for simulating running data of the vehicle in the running process; the acquisition module is used for acquiring a target signal obtained by converting vehicle end data by the intelligent four-wheel drive control unit; and the determining module is used for determining a test result of the vehicle-end data based on the target signal and the expected signal, wherein the test result is used for indicating whether the vehicle-end data passes the test, and the expected signal is obtained by converting the vehicle-end data according to expected operation by the intelligent four-wheel drive control unit.
According to an aspect of the embodiment of the invention, a nonvolatile storage medium is provided, and the nonvolatile storage medium includes a stored program, wherein when the program runs, a processor of the device is controlled to execute any one of the above vehicle-end data testing methods based on the intelligent four-wheel drive control unit.
According to an aspect of an embodiment of the present invention, there is provided a vehicle including: one or more processors; storage means for storing one or more programs; when the one or more programs are executed by the one or more processors, the one or more processors execute any one of the above vehicle end data testing methods based on the intelligent four-wheel drive control unit.
In the embodiment of the invention, vehicle end data are sent to an intelligent four-wheel drive control unit of a vehicle, wherein the vehicle end data are used for simulating running data of the vehicle in the running process, a target signal obtained by converting the vehicle end data by the intelligent four-wheel drive control unit is obtained, and a test result of the vehicle end data is determined based on the target signal and an expected signal, wherein the test result is used for indicating whether the vehicle end data pass the test, the expected signal is a signal obtained by converting the vehicle end data according to expected operation by the intelligent four-wheel drive control unit, the target signal obtained by processing the vehicle end data by the intelligent four-wheel drive control unit is compared with the expected signal obtained by converting the vehicle end data according to the expected operation, whether the processing of the intelligent four-wheel drive control unit reaches the expectation can be monitored, relevant factors of the test can be timely adjusted under the condition that the expectation is not reached, so that the intelligent four-wheel drive control unit can test the tear-off data more efficiently, and the technical problem that the vehicle end data efficiency is lower based on the intelligent four-wheel drive control unit is solved.
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The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention and do not constitute a limitation of the invention. In the drawings:
fig. 1 is a flowchart of a vehicle-end data testing method based on an intelligent four-wheel drive control unit according to an embodiment of the invention;
FIG. 1a is a schematic diagram of signal interaction during a test process according to an embodiment of the present application;
FIG. 1b is a schematic diagram of a fault injection according to an embodiment of the present application;
fig. 2 is a flowchart of another vehicle-end data testing method based on an intelligent four-wheel drive control unit according to embodiment 2 of the present application;
fig. 3 is a schematic diagram of an intelligent four-wheel drive control unit-based vehicle end test system according to embodiment 3 of the present invention;
fig. 4 is a schematic diagram of an intelligent four-wheel drive control unit-based vehicle end testing device according to embodiment 4 of the invention;
fig. 5 is a schematic diagram of another vehicle end testing device based on an intelligent four-wheel drive control unit according to embodiment 5 of the invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
According to an embodiment of the present invention, an embodiment of a method for testing vehicle-end data based on an intelligent four-wheel drive control unit is provided, it should be noted that the steps shown in the flowchart of the drawings may be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in an order different from the order shown.
Fig. 1 is a flowchart of a vehicle-end data testing method based on an intelligent four-wheel drive control unit according to an embodiment of the present invention, and as shown in fig. 1, the method includes the following steps:
and step S102, sending vehicle end data to an intelligent four-wheel drive control unit of the vehicle.
The vehicle end data is used for simulating the driving data of the vehicle in the driving process.
The driving data can be driving data of the vehicle without fault, driving data of the vehicle with fault, and driving data of the vehicle in special working conditions. But is not limited thereto. Optionally, a parameter when the vehicle fails may be obtained, and the parameter is placed in the established simulation model of the vehicle to simulate the running data of the vehicle with the failure in the running process; the parameters when the vehicle is not in fault can be acquired and input into the established simulation model of the vehicle to simulate the running data of the vehicle without fault in the running process.
For example, when the vehicle-side data is used for simulating the speeds of a plurality of wheels of a vehicle under the working conditions of vehicle skidding, sudden start and sudden acceleration, based on the above, the speeds of the plurality of wheels of the vehicle under the working conditions of vehicle skidding, sudden start and sudden acceleration can be simulated by the upper computer and sent to the intelligent four-wheel drive control unit, the skidding road condition of the vehicle can be set to be that a single wheel speed is higher than other wheel speeds, for example, the wheel speed of a rear wheel can be set to be 30 kilometers per hour, the wheel speeds of other wheels can be set to be 20 kilometers per hour, the wheel speed value is modified by testing interface software, the upper computer can send a wheel speed signal to a real-time system, and a hardware-in-loop system outputs the wheel speed signal to the real intelligent four-wheel drive control unit through an Input/Output (IO) board card.
And step S104, acquiring a target signal obtained by converting the vehicle end data by the intelligent four-wheel drive control unit.
The intelligent four-wheel drive control unit may be an intelligent four-wheel drive transfer (Torque On Demand, abbreviated as TOD).
The target signal may be a signal that needs to be transmitted when the target function is executed in the vehicle-side data.
In an optional embodiment, the host computer can send the generated vehicle end data to the intelligent four-wheel drive control unit, the intelligent four-wheel drive control unit receives the vehicle end data, namely, the intelligent four-wheel drive control unit responds to a signal simulated by the vehicle end data, based on the above, the intelligent four-wheel drive control unit can feed back the vehicle end data responding to the vehicle end data to the host computer, and the vehicle end data is converted to obtain a target signal, the host computer can receive the target signal fed back by the intelligent four-wheel drive control unit, and then the intelligent four-wheel drive control unit can determine a test result of the vehicle end data according to the received target signal.
And step S106, determining a test result of the vehicle-end data based on the target signal and the expected signal.
The test result is used for indicating whether the vehicle-end data pass the test or not, and the expected signal is obtained by converting the vehicle-end data according to expected operation by the intelligent four-wheel drive control unit.
The expected signal can be information obtained by converting vehicle-end data according to expected operation by the simulation tool through the intelligent four-wheel drive control unit, wherein the expected operation can be the operation which is required to be executed by the preset intelligent four-wheel drive control unit.
In an alternative embodiment, the target signal and the expected signal may be compared to determine a test result of the vehicle-side data, and in a case that the target signal is consistent with the expected signal, it indicates that the function corresponding to the vehicle-side data is enabled, and the vehicle-side data passes the test. And under the condition that the target signal is inconsistent with the expected signal, the function corresponding to the vehicle-end data is not started, and the vehicle-end data does not pass the test.
In the embodiment of the invention, vehicle end data are sent to an intelligent four-wheel drive control unit of a vehicle, wherein the vehicle end data are used for simulating running data of the vehicle in the running process, a target signal obtained by converting the vehicle end data by the intelligent four-wheel drive control unit is obtained, and a test result of the vehicle end data is determined based on the target signal and an expected signal, wherein the test result is used for indicating whether the vehicle end data pass the test, the expected signal is a signal obtained by converting the vehicle end data according to expected operation by the intelligent four-wheel drive control unit, the target signal obtained by processing the vehicle end data by the intelligent four-wheel drive control unit is compared with the expected signal obtained by converting the vehicle end data according to the expected operation, whether the processing of the intelligent four-wheel drive control unit reaches the expectation can be monitored, relevant factors of the test can be timely adjusted under the condition that the expectation is not reached, so that the intelligent four-wheel drive control unit can test the tear-off data more efficiently, and the technical problem that the vehicle end data efficiency is lower based on the intelligent four-wheel drive control unit is solved.
Optionally, before sending the vehicle-end data to the intelligent four-wheel drive control unit of the vehicle, the method further comprises: establishing a simulation model of the vehicle; and generating vehicle-end data based on the simulation model.
The simulation model described above may be for that vehicle, or for a class of vehicles of the same type. Optionally, the parameters of the simulation model may be set according to actual parameters of the vehicle.
In an alternative embodiment, a simulation model of the vehicle may be established, and vehicle-end data of the vehicle may be generated from the simulation model.
Optionally, the vehicle-end data is wheel speeds of a plurality of wheels, and the intelligent four-wheel drive control unit is configured to convert the wheel speeds of the plurality of wheels of the vehicle to obtain target signals for the plurality of wheels, where the target signals are used to represent torque values distributed to the plurality of wheels by the intelligent four-wheel drive control unit.
In an alternative embodiment, the intelligent four-wheel drive control unit may convert the wheel speeds of the wheels of the vehicle after receiving the wheel speeds of the wheels of the vehicle, so as to obtain the control signal of the torque of the wheels, i.e. the target signal.
The vehicle skidding road condition can set a single wheel speed to be higher than other wheel speeds (the wheel speed of a right rear wheel can be set to be 30 kilometers per hour, the wheel speed of other wheels is set to be 20 kilometers per hour), through testing interface software, a wheel speed value is modified, an upper computer sends a wheel speed signal to a real-time system, hardware outputs the wheel speed signal to a real intelligent four-wheel drive control unit through an input and output board card in a ring system, at the moment, the intelligent four-wheel drive control unit detects the change of the single wheel speed value, a torque distribution function is started, the output signal of a controller can be collected through the input and output board card again, at the moment, whether a current value signal of a four-wheel drive electronic coil of torque as required changes or not is observed through the testing interface software, and then the torque distributed to a front wheel is observed. If the torque-on-demand four-wheel drive electronic coil current value signal changes and is distributed to a part of the torque of the front wheel, the torque distribution function is started, and vehicle end data corresponding to the vehicle slipping road condition are determined to pass the test.
When a vehicle sudden starting working condition is tested, the vehicle speed can be set to be 10 kilometers per hour, the gear signal is D1 gear, the speed difference of front wheels and rear wheels is 2 kilometers per hour, namely the speed of the front wheels is 10 kilometers per hour, the speed difference of the rear wheels is 12 kilometers per hour, an accelerator opening degree signal is set to be 100%, and at the moment, whether the current signal value change of the four-drive electromagnetic coil according to the required torque and the torque value distributed to the front shaft meet expectations or not is observed through test interface software so as to determine whether vehicle end data corresponding to the vehicle sudden starting working condition pass the test or not. And if the torque value is in accordance with the expectation, determining that the vehicle end data corresponding to the vehicle sudden starting working condition passes the test.
Optionally, determining a test result of the vehicle-end data based on the target signal and the expected signal, comprising: determining that the vehicle-end data passes the test in response to the target signal being the same as the expected signal; and determining that the vehicle-end data fails the test in response to the target signal being different from the expected signal.
It should be noted that, by the above method of the present application, the following functions can be tested: testing a torque distribution function, a braking system interface function, a thermal management function and an engine torque limiting function:
the function summary of the test torque distribution function is to transmit a certain torque to a non-driving wheel according to signals of wheel speed, vehicle speed and the like to improve vehicle traction when working conditions of vehicle slipping, sudden starting, sudden acceleration and the like are detected, and basic vehicle control is realized through front axle dynamic torque distribution according to whole vehicle information. The test working conditions comprise vehicle slipping, vehicle sudden starting and vehicle sudden acceleration.
The testing steps are as follows: the wheel slip road condition of the vehicle can be set to be that a single wheel speed is higher than other wheel speeds (the wheel speed of a right rear wheel can be set to be 30km/h, the wheel speeds of other wheels are set to be 20 km/h), the wheel speed value is modified through testing interface software, an upper computer sends a wheel speed signal to a real-time system, hardware outputs the wheel speed signal to a real intelligent four-wheel drive control unit through an IO board card in a ring system, at the moment, the intelligent four-wheel drive control unit detects the change of the single wheel speed value, a torque distribution function is started, the output signal of a controller can be collected through the IO board card again, at the moment, whether the current value signal of an electronic coil of the intelligent four-wheel drive transfer case changes or not is observed through the testing interface software, and then the change of the torque distributed to front wheels is observed. If the TOD solenoid current value signal changes and a portion of the torque is distributed to the front wheels, the torque distribution function is enabled.
When the vehicle is tested to be in a sudden starting working condition, the vehicle speed can be set to be 10km/h, the gear signal is D1 gear, the speed difference of front wheels and rear wheels is 2km/h, namely the wheel speed of the front wheels is 10km/h, the speed difference of the rear wheels is 12km/h, the accelerator opening degree signal is set to be 100%, and at the moment, whether the change of the current signal value of the TOD electromagnetic coil and the torque value distributed to the front shaft meet expectations or not is observed through testing interface software.
The function summary of testing the interface function of the brake system is as follows: to prevent torque distribution from negatively affecting vehicle braking and stability, the TOD controller needs to be coordinated with the vehicle braking system.
Fig. 1a is a schematic diagram of signal interaction in a test process according to an embodiment of the present application, and as shown in fig. 1a, the test steps are: (1) The electromagnetic coil open-circuit request signal value sent to the TOD by an Electronic Stability Control (ESC) is modified by an upper computer, and meanwhile, the clutch is set when receiving an external request signal. After the above conditions were satisfied, it was observed whether the clutch was quickly disengaged (solenoid current was 0, no torque value was output). If the clutch is disengaged, the ESC can be used for controlling the disengagement of the clutch, otherwise, the function is not realized, and a Log analysis is recorded at the moment to analyze possible problems. After the clutch responds to ESC disengagement control, the clutch receives an external request signal and is set to be 0, and whether the TOD returns to the original working state at the moment is observed; (2) Setting a clutch torque output limit value sent by the ESC to the TOD as a certain value N, setting a sudden start or front wheel slip working condition, distributing a certain amount of torque to the front wheel by the TOD at the moment, observing whether the torque value is increased by taking the N as the limit value, if so, activating the function, otherwise, not activating the function. (3) And modifying a hand brake signal sent by the ESC through the upper computer, setting the EPB to be in a locking state, setting the vehicle speed to be greater than a certain limit value A, and observing whether the electromagnetic coil of the clutch is disengaged at the moment. Disengagement proves that this function is activated, whereas it is not. And setting the hand brake signal to 0, and returning the clutch to the original working state. As shown in fig. 1a, a Gateway (GW) interacts with the TOD to implement network interconnection of the TOD, and an Engine Management System (EMS) is used to manage the Engine. An Antilock Brake System (ABS) is used to control TOD.
The functional summary of the test thermal management function is as follows: when the TOD works, the temperature of the clutch is calculated, and when the torque is too large and the clutch is possibly overheated, the clutch is automatically disengaged to start overheating protection.
The testing steps are as follows: the upper computer is used for modifying an environment temperature signal and a KL15 power-off time signal, and simultaneously setting a large wheel speed difference (the speed difference of the front wheel and the rear wheel is set to be 10km/h and the opening degree of an accelerator is set to be 60%) of the front wheel and the rear wheel so as to activate the TOD torque control function, wherein the clutch has a large current at the moment, after a period of time is observed, whether the clutch is automatically disengaged or not is observed, whether the system reports an overtemperature fault of a coil or not is judged, and when the clutch is automatically disengaged and the system reports the overtemperature fault, the heat management function is activated, otherwise, the heat management function is not activated. The upper computer is used for setting different working conditions for repeated tests, and the clutch temperature A for activating the heat management function can be calibrated. If the normal driving condition is recovered, the temperature of the clutch is reduced to be lower than B, the clutch is required to be combined again, and the normal function is recovered.
Wherein, the function of test engine torque restriction function does: to better implement power line protection, torque limiting and thermal management functions, the four-wheel drive system provides the ability to demand a reduction in engine power (torque) output. When there are conditions that may cause damage to the driveline or clutch, it is desirable to reduce engine torque through the vehicle communication network to achieve protection.
The test method comprises the following steps: firstly, clearing fault codes of a four-wheel drive system, ensuring that a test is carried out in a fault-free state, and setting the opening degree of an accelerator to be 100 percent and the speed difference between a front wheel and a rear wheel: the front wheels are 10km/h, the rear wheels are 12km/h, and the gear is 3 gears. Under the working condition, with the continuous improvement of the TOD distribution torque, whether an engine torque limit enabling signal sent to an engine management system by the TOD is activated or not is observed through test interface software, if the engine torque limit enabling signal is activated, the engine torque limit function is activated, otherwise, the engine torque limit function is not activated, and if the reason needs to be analyzed, log Log analysis can be recorded through the test interface software.
Fig. 1b is a schematic diagram of fault injection according to an embodiment of the present application, and as shown in fig. 1b, a real-time simulation model may be managed by experiment management and test software, may perform fault injection through a bus and an I/O, may perform fault injection through signal conditioning and load simulation, and interacts with an Electronic Control Unit (ECU) through a connector (ODU). The test system comprises a series alternating current on-off switch (PDU) alternating current power supply management, a program control power supply, a signal conditioning power supply, a resistance simulation board, a 24V power supply, a real-time system, an I/O wiring layer, a fault injection board, an electronic load unit and an ODU connector. The PDU is a series alternating current on-off switch and is used for distributing and protecting alternating current power inside the equipment; a program-controlled power supply: supplying power to the controller and the load to make the voltage continuously controllable; a signal conditioning power supply: power is supplied to internal board cards such as a signal conditioning and fault injection board; a real-time simulation system: real-time running of a simulation model (such as Simulink), real-time data interaction with upper computer test software, online parameter adjustment and monitoring, output of signals required by the controller through various IO board cards and acquisition of all signals sent by the controller; fault injection: electrical faults such as open circuit, short circuit and the like are produced for the hard wire signals; signal conditioning: and the level conversion between the controller and the real-time system board card is realized. The testing device is connected with a tester through interface testing software and performs testing engineering management, wherein the testing software comprises resource management: configuring analog, digital and bus interface resources; model management: importing a vehicle simulation model or a control algorithm; interaction management: managing the corresponding relation between the model and the hardware resource; interface management: detecting and controlling the state of the system operation.
Through the steps, the invention discloses a comprehensive test method for the intelligent four-wheel drive controller, the method can ensure the coverage of various working conditions, and the coverage is wider compared with the coverage of an environment test case of a real vehicle. Functional testing under extreme or dangerous conditions can be performed without harm to personnel or vehicles. The hardware in-the-loop test system has good repeatability, the test condition is set to be digital and standardized, and the interference of the random behavior of a driver is avoided. The test case script can be compiled to solidify the test steps, so that the test automation is realized, and the test script can be repeatedly used and is convenient to transplant in different projects. The hardware-in-the-loop system can test a single controller, can also test a network formed by a plurality of controllers, and can be used for testing a plurality of models of the same controller through simple transformation.
Example 2
According to an embodiment of the present invention, an embodiment of a vehicle end data testing method based on an intelligent four-wheel drive control unit is further provided, and fig. 2 is a flowchart of another vehicle end data testing method based on an intelligent four-wheel drive control unit according to embodiment 2 of the present application, and as shown in fig. 2, the method includes the following steps:
and S202, receiving vehicle end data from an upper computer.
The vehicle end data are used for simulating driving data of the vehicle in the driving process.
And step S204, converting the vehicle-end data to obtain a target signal.
And S206, sending a target signal to the upper computer, wherein the upper computer determines a test result of the vehicle-end data based on the target signal and an expected signal, the test result is used for indicating whether the vehicle-end data passes the test, and the expected signal is obtained after the intelligent four-wheel drive control unit converts the vehicle-end data according to an expected operation.
Optionally, the vehicle-end data is wheel speeds of a plurality of wheels, and the converting of the vehicle-end data to obtain the target signal includes: and converting wheel speeds of a plurality of wheels of the vehicle to obtain signals of the plurality of wheels, wherein the target signal is used for representing the torque value distributed to the plurality of wheels by the intelligent four-wheel drive control unit.
It should be noted that the preferred embodiments described in the foregoing examples of the present application are the same as the schemes, application scenarios, and implementation procedures provided in example 1, but are not limited to the schemes provided in example 1.
Example 3
According to the embodiment of the present invention, a vehicle end testing system based on an intelligent four-wheel drive control unit is further provided, and the system can execute the vehicle end testing method based on the intelligent four-wheel drive control unit in the above embodiment, and the specific implementation manner and the preferred application scenario are the same as those in the above embodiment, and are not described herein again.
Fig. 3 is a schematic diagram of an intelligent four-wheel drive control unit-based vehicle end testing system according to embodiment 3 of the present invention, and as shown in fig. 3, the system includes:
the upper computer 302 is used for generating vehicle end data and sending the vehicle end data to the intelligent four-wheel drive control unit, wherein the vehicle end data is used for simulating driving data of a vehicle in the driving process;
the upper computer 302 is further configured to receive a target signal obtained by converting the vehicle-end data by the intelligent four-wheel drive control unit, and determine a test result of the vehicle-end data based on the target signal and an expected signal, where the test result is used to indicate whether the vehicle-end data passes the test, and the expected signal is a signal obtained by converting the vehicle-end data by the intelligent four-wheel drive control unit according to an expected operation;
and the intelligent four-wheel drive control unit 304 is used for receiving the vehicle-end data, converting the vehicle-end data to obtain a target signal, and sending the target signal to the upper computer.
Example 4
According to the embodiment of the present invention, a vehicle end testing device based on an intelligent four-wheel drive control unit is further provided, and the device can execute the vehicle end testing method based on the intelligent four-wheel drive control unit in the above embodiment, and the specific implementation manner and the preferred application scenario are the same as those in the above embodiment, and are not described herein again.
Fig. 4 is a schematic diagram of an intelligent four-wheel drive control unit-based vehicle end testing device according to embodiment 4 of the present invention, and as shown in fig. 4, the device 400 includes:
a sending module 402, configured to send vehicle-end data to an intelligent four-wheel drive control unit of a vehicle, where the vehicle-end data is used to simulate driving data of the vehicle in a driving process;
an obtaining module 404, configured to obtain a target signal obtained by converting vehicle-end data by an intelligent four-wheel drive control unit;
and a determining module 406, configured to determine a test result of the vehicle-side data based on the target signal and the expected signal, where the test result is used to indicate whether the vehicle-side data passes the test, and the expected signal is a signal obtained by converting the vehicle-side data according to an expected operation by the intelligent four-wheel drive control unit.
Optionally, the apparatus further comprises: the device comprises an establishing module and a generating module.
The establishing module is used for establishing a simulation model of the vehicle; the generation module is used for generating vehicle-end data based on the simulation model.
Optionally, the vehicle-end data is wheel speeds of a plurality of wheels, and the intelligent four-wheel drive control unit is configured to convert the wheel speeds of the plurality of wheels of the vehicle to obtain target signals for the plurality of wheels, where the target signals are used to represent torque values distributed to the plurality of wheels by the intelligent four-wheel drive control unit.
Example 5
According to the embodiment of the present invention, another vehicle end testing apparatus based on an intelligent four-wheel drive control unit is also provided, and the apparatus can execute the vehicle end testing method based on the intelligent four-wheel drive control unit in the above embodiment, and the specific implementation manner and the preferred application scenario are the same as those in the above embodiment, and are not described herein again.
Fig. 5 is a schematic diagram of another vehicle end testing device based on an intelligent four-wheel drive control unit according to embodiment 5 of the present invention, as shown in fig. 5, the device 500 includes: a receiving module 502, a converting module 504, and a sending module 506.
The receiving module is used for receiving vehicle end data from an upper computer; the vehicle end data are used for simulating driving data of the vehicle in the driving process; the conversion module is used for converting the vehicle end data to obtain a target signal; the sending module is used for sending a target signal to the upper computer, wherein the upper computer determines a test result of the vehicle-end data based on the target signal and an expected signal, the test result is used for indicating whether the vehicle-end data passes the test, and the expected signal is a signal obtained by converting the vehicle-end data according to an expected operation by the intelligent four-wheel drive control unit.
Optionally, the conversion module is further configured to convert wheel speeds of a plurality of wheels of the vehicle to obtain signals for the plurality of wheels, wherein the target signal is used to represent a torque value distributed to the plurality of wheels by the intelligent four-wheel drive control unit.
Example 6
According to the embodiment of the invention, the nonvolatile storage medium comprises a stored program, wherein the processor of the device is controlled to execute the vehicle end data testing method based on the intelligent four-wheel drive control unit in the embodiment when the program runs.
Example 7
According to an embodiment of the present invention, there is also provided a vehicle including: one or more processors; storage means for storing one or more programs; when the one or more programs are executed by the one or more processors, the one or more processors are enabled to execute the vehicle end data testing method based on the intelligent four-wheel drive control unit in the embodiment.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
In the above embodiments of the present invention, the description of each embodiment has its own emphasis, and reference may be made to the related description of other embodiments for parts that are not described in detail in a certain embodiment.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed coupling or direct coupling or communication connection between each other may be an indirect coupling or communication connection through some interfaces, units or modules, and may be electrical or in other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk, and various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A vehicle end data testing method based on an intelligent four-wheel drive control unit is characterized by comprising the following steps:
sending vehicle end data to an intelligent four-wheel drive control unit of a vehicle, wherein the vehicle end data is used for simulating running data of the vehicle in a running process;
acquiring a target signal obtained by converting the vehicle end data by the intelligent four-wheel drive control unit;
and determining a test result of the vehicle-end data based on the target signal and an expected signal, wherein the test result is used for indicating whether the vehicle-end data passes the test, and the expected signal is obtained by converting the vehicle-end data according to an expected operation by the intelligent four-wheel drive control unit.
2. The method of claim 1, wherein prior to sending the vehicle-side data to the intelligent four-wheel drive control unit of the vehicle, the method further comprises:
establishing a simulation model of the vehicle;
and generating the vehicle end data based on the simulation model.
3. The method of claim 1, wherein the end-of-vehicle data is wheel speeds of a plurality of wheels, and the intelligent four-wheel-drive control unit is configured to convert the wheel speeds of the plurality of wheels of the vehicle to obtain the target signals for the plurality of wheels, wherein the target signals are indicative of torque values distributed to the plurality of wheels by the intelligent four-wheel-drive control unit.
4. The method of claim 1, wherein determining the test result of the end-of-vehicle data based on the target signal and the expected signal comprises:
in response to the target signal being the same as the expected signal, determining that the vehicle-end data passes a test;
determining that the end-of-vehicle data fails the test in response to the target signal being different from the expected signal.
5. A vehicle end data testing method based on an intelligent four-wheel drive control unit is characterized by comprising the following steps:
receiving vehicle end data from an upper computer, wherein the vehicle end data is used for simulating driving data of a vehicle in the driving process;
converting the vehicle end data to obtain a target signal;
and sending the target signal to the upper computer, wherein the upper computer determines a test result of the vehicle-end data based on the target signal and an expected signal, the test result is used for indicating whether the vehicle-end data passes the test, and the expected signal is obtained after the intelligent four-wheel drive control unit converts the vehicle-end data according to an expected operation.
6. The method of claim 5, wherein the end-of-vehicle data is wheel speeds of a plurality of wheels, and converting the end-of-vehicle data to obtain a target signal comprises:
converting wheel speeds of the plurality of wheels of the vehicle to obtain the signals of the plurality of wheels, wherein the target signal is used for representing the torque value distributed to the plurality of wheels by the intelligent four-wheel drive control unit.
7. The utility model provides a car end data test system based on intelligence four-wheel drive the control unit which characterized in that includes:
the upper computer is used for generating vehicle end data and sending the vehicle end data to the intelligent four-wheel drive control unit, wherein the vehicle end data is used for simulating driving data of a vehicle in the driving process;
the upper computer is further used for receiving a target signal obtained by converting the vehicle end data by the intelligent four-wheel drive control unit, and determining a test result of the vehicle end data based on the target signal and an expected signal, wherein the test result is used for indicating whether the vehicle end data passes the test, and the expected signal is a signal obtained by converting the vehicle end data by the intelligent four-wheel drive control unit according to an expected operation;
and the intelligent four-wheel drive control unit is used for receiving the vehicle end data, converting the vehicle end data to obtain a target signal, and sending the target signal to the upper computer.
8. The utility model provides a car end data testing arrangement based on intelligence four drive the control unit which characterized in that includes:
the system comprises a sending module, a data processing module and a data processing module, wherein the sending module is used for sending vehicle end data to an intelligent four-wheel drive control unit of a vehicle, and the vehicle end data is used for simulating running data of the vehicle in the running process;
the acquisition module is used for acquiring a target signal obtained by converting the vehicle end data by the intelligent four-wheel drive control unit;
and the determining module is used for determining a test result of the vehicle-end data based on the target signal and an expected signal, wherein the test result is used for indicating whether the vehicle-end data passes the test, and the expected signal is a signal obtained by converting the vehicle-end data according to an expected operation by the intelligent four-wheel drive control unit.
9. A non-volatile storage medium, characterized in that the non-volatile storage medium comprises a stored program, wherein a processor of a device is controlled during the program running to execute the intelligent four-wheel drive control unit-based vehicle-end data testing method according to any one of claims 1-6.
10. A vehicle, characterized by comprising:
one or more processors;
storage means for storing one or more programs;
when the one or more programs are executed by the one or more processors, the one or more processors are enabled to execute the intelligent four-wheel drive control unit-based vehicle end data testing method of any one of claims 1-6.
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| JPH09188156A (en) * | 1996-01-09 | 1997-07-22 | Fuji Heavy Ind Ltd | Failure diagnosing device of torque distribution controller for four wheel drive |
| CN103176472A (en) * | 2013-03-13 | 2013-06-26 | 长沙理工大学 | Four-wheel drive pure electric vehicle hardware-in-loop simulation experimental system |
| CN110441066A (en) * | 2019-07-15 | 2019-11-12 | 中国第一汽车股份有限公司 | A kind of intelligent driving vehicle is in ring test method and test macro |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09188156A (en) * | 1996-01-09 | 1997-07-22 | Fuji Heavy Ind Ltd | Failure diagnosing device of torque distribution controller for four wheel drive |
| CN103176472A (en) * | 2013-03-13 | 2013-06-26 | 长沙理工大学 | Four-wheel drive pure electric vehicle hardware-in-loop simulation experimental system |
| CN110441066A (en) * | 2019-07-15 | 2019-11-12 | 中国第一汽车股份有限公司 | A kind of intelligent driving vehicle is in ring test method and test macro |
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