CN115078879A - Vehicle component testing system and testing method - Google Patents
Vehicle component testing system and testing method Download PDFInfo
- Publication number
- CN115078879A CN115078879A CN202210722548.1A CN202210722548A CN115078879A CN 115078879 A CN115078879 A CN 115078879A CN 202210722548 A CN202210722548 A CN 202210722548A CN 115078879 A CN115078879 A CN 115078879A
- Authority
- CN
- China
- Prior art keywords
- control unit
- tested
- signal
- electronic control
- electric control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/003—Environmental or reliability tests
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/28—Provision in measuring instruments for reference values, e.g. standard voltage, standard waveform
Abstract
The application relates to a vehicle component testing system and a testing method. The system comprises: the processing module is connected with the electric control unit to be tested and used for sending a test signal to the electric control unit to be tested and acquiring a control signal output by the electric control unit to be tested after the test signal is received; the analog load is connected with the electric control unit to be tested and used for receiving the control signal output by the electric control unit to be tested and executing corresponding action under the driving of the control signal; the processing module is further connected with the analog load and used for acquiring the working state of the analog load after the analog load receives the control signal and determining whether the electronic control unit to be tested reaches the standard or not according to the working state of the analog load, the control signal output by the electronic control unit to be tested and a preset standard control signal. Therefore, the test of the electric control unit is realized, and the reliability and the safety of a vehicle subsequently loaded with the electric control unit are ensured.
Description
Technical Field
The application relates to the technical field of vehicle part testing, in particular to a vehicle part testing system and a vehicle part testing method.
Background
With the development of vehicle technology, in order to improve the safety of a vehicle, a component of the vehicle needs to be tested before the component is put into production, the potential working life and the potential failure risk of the component can be analyzed through the test, and the component is improved or the test result is recorded before the component is actually produced, so that the safety of the vehicle is improved. Therefore, how to test the components of the vehicle and analyze whether the components reach the standard is a problem to be solved at present.
Disclosure of Invention
In view of the above, it is necessary to provide a vehicle component testing system and a testing method capable of testing a component of a vehicle to determine whether the component is up to standard.
A vehicle component testing system, comprising: the processing module is connected with the electronic control unit to be tested and used for sending a test signal to the electronic control unit to be tested and acquiring a control signal output by the electronic control unit to be tested after receiving the test signal; the analog load is connected with the electric control unit to be tested and used for receiving the control signal output by the electric control unit to be tested and executing corresponding action under the driving of the control signal; the processing module is further connected with the analog load and used for acquiring the working state of the analog load after receiving the control signal and determining whether the electric control unit to be tested reaches the standard or not according to the working state of the analog load, the control signal output by the electric control unit to be tested and a preset standard control signal.
In one embodiment, the processing module is configured to determine that the electronic control unit to be tested reaches the standard if the working state of the analog load is normal and the control signal output by the electronic control unit to be tested is the same as the standard control signal; and if the working state of the analog load is normal and the control signal output by the electric control unit to be tested is different from the standard control signal, judging that the electric control unit to be tested does not reach the standard, wherein if all the parameters of the analog load are within a preset range and no open circuit or short circuit occurs, determining that the working state of the analog load is normal.
In one embodiment, the system further comprises: the input end of the conversion module is connected with the processing module, and the output end of the conversion module is connected with the electric control unit to be tested, so that the test signal output by the processing module is converted into a pulse signal, and the pulse signal is sent to the electric control unit to be tested.
In one embodiment, the system further comprises: the programmable power supply is connected with the electronic control unit to be tested, and the programmable power supply is used for supplying power to the electronic control unit to be tested in a preset power supply mode, wherein the preset power supply mode comprises the following steps: the power supply voltage is one of a standard power supply mode of the rated voltage of the electric control unit to be tested, a high-voltage power supply mode of the power supply voltage higher than the rated voltage of the electric control unit to be tested and a low-voltage power supply mode of the power supply voltage lower than the rated voltage of the electric control unit to be tested.
In one embodiment, the system further comprises: the test box is used for adjusting the environment temperature of the electronic control unit to be tested.
In one embodiment, the system further comprises: the vibration table, the automatically controlled unit that awaits measuring is placed on the vibration table, the vibration table is used for the automatically controlled unit that awaits measuring simulates out the vibration environment.
In one embodiment, the processing module is further configured to continuously send a test signal to the electronic control unit to be tested, and continuously determine whether the electronic control unit to be tested reaches the standard, and if the electronic control unit to be tested reaches the standard within a preset time period, determine that the service life of the electronic control unit to be tested is qualified.
In one embodiment, the test signal comprises at least one of a switching value signal, an analog value signal and a digital value signal, wherein the switching value signal comprises an opening signal or a closing signal, the analog value signal comprises at least one of a temperature signal and a position signal, and the digital value signal comprises a vehicle speed signal; the electric control unit to be tested is used for controlling the corresponding analog load to be started or closed according to the switching value signal, and the electric control unit to be tested is used for controlling the corresponding analog load to execute the corresponding action according to the analog value signal and/or the digital value signal.
In one embodiment, the processing module is configured to send an alarm signal if the working state of the dummy load is abnormal.
A vehicle component testing method, comprising:
sending a test signal to an electronic control unit to be tested, and acquiring a control signal output by the electronic control unit to be tested after receiving the test signal;
acquiring the working state of the analog load after receiving the control signal;
and determining whether the electric control unit to be tested reaches the standard or not according to the working state of the analog load, the control signal output by the electric control unit to be tested and a preset standard control signal.
According to the vehicle component testing system and the vehicle component testing method, the processing module is arranged and connected with the electronic control unit to be tested, and the testing signal can be sent to the electronic control unit to be tested, so that various performances of the electronic control unit to be tested are tested, and the control signal output by the electronic control unit to be tested after receiving the testing signal, namely the feedback signal output by the electronic control unit to be tested after receiving the testing signal, is obtained. And the simulation load is connected with the electric control unit to be tested and used for simulating the load on the actual vehicle, receiving the control signal output by the electric control unit to be tested and executing corresponding action according to the control signal. The processing module obtains a control signal output by the electronic control unit to be tested and the working state of the analog load, compares the control signal output by the electronic control unit to be tested with a preset standard control signal, so that whether the control signal output by the electronic control unit to be tested is correct or not can be judged, whether the electronic control unit to be tested reaches the standard or not can be judged, and whether the judgment on the electronic control unit to be tested is correct or not is determined based on the working state of the analog load. Therefore, whether the electric control unit to be tested reaches the standard or not is comprehensively determined according to the working state of the analog load, the control signal output by the electric control unit to be tested and the preset standard control signal, so that the test on the electric control unit is realized, and the reliability and the safety of a subsequent vehicle loaded with the electric control unit are ensured.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a vehicle component testing system in one embodiment;
FIG. 2 is a flowchart illustrating a method for determining whether the electronic control unit under test has reached a standard according to an embodiment;
FIG. 3 is a schematic diagram of a vehicle component testing system in accordance with another embodiment;
FIG. 4 is a schematic diagram of a vehicle component testing system in accordance with yet another embodiment;
FIG. 5 is a schematic diagram of a vehicle component testing system in accordance with yet another embodiment;
FIG. 6 is a schematic diagram of a vehicle component testing system in accordance with yet another embodiment;
FIG. 7 is a schematic diagram of a vehicle component testing system in yet another embodiment;
FIG. 8 is a flow diagram of a vehicle component testing method in one embodiment.
Description of reference numerals: 10-processing module, 20-electric control unit to be tested, 30-analog load, 40-conversion module, 50-program control power supply, 60-test box, 70-vibration table, 80-control module, 81-uninterruptible power supply, 82-bus power supply and 83-brake switch.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Embodiments of the present application are set forth in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
Spatial relational terms, such as "under," "below," "under," "over," and the like may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements or features described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary terms "under" and "under" can encompass both an orientation of above and below. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations) and the spatial descriptors used herein interpreted accordingly.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or be connected to the other element through intervening elements. Further, "connection" in the following embodiments is understood to mean "electrical connection", "communication connection", or the like, if there is a transfer of electrical signals or data between the connected objects.
As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises/comprising," "includes" or "including," etc., specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof. Also, as used in this specification, the term "and/or" includes any and all combinations of the associated listed items.
In one embodiment, as shown in fig. 1, there is provided a vehicle component testing system comprising: processing module 10, dummy load 30. Wherein:
the processing module 10 is connected to the electronic control unit 20 to be tested, and is configured to send a test signal to the electronic control unit 20 to be tested, and obtain a control signal output by the electronic control unit 20 to be tested after receiving the test signal.
Illustratively, the processing module 10 is composed of a PXI (PCI extensions for Instrumentation) processor, an industrial Controller, and a CAN (Controller Area Network) card. The test device can simulate and send out various test signals, such as sensor signals collected by various sensors of a simulated actual vehicle, and the like, so that various scenes possibly occurring in the operation of the actual vehicle can be simulated for the electric control unit, and then whether the electric control unit reaches the standard or not is judged according to control signals output by the electric control unit after receiving the test signals, and the test of the electric control unit is realized.
Specifically, the Electronic Control Unit 20 is an Electronic Control Unit (ECU), and is capable of performing calculation, processing and judgment according to the received test signal, and then outputting a Control command to Control each component of the vehicle to take a corresponding action, so as to ensure normal operation of the vehicle. For example, when the test signal is an air flow signal, the electronic control unit can determine the fuel injection quantity according to the air flow signal, and then output a pulse signal with a certain width to the fuel injector to control the fuel injection quantity of the fuel injector, so that the running states of all parts of the vehicle are adjusted according to the current environment, and the vehicle runs under the optimal working condition.
And the analog load 30 is connected with the electronic control unit 20 to be tested, and is used for receiving the control signal output by the electronic control unit 20 to be tested and executing a corresponding action under the driving of the control signal.
Specifically, the dummy load 30 is used for simulating each component in the actual vehicle, and is used for simulating and executing a corresponding action according to an instruction of the control signal after receiving the control signal output by the electronic control unit 20 to be tested. The corresponding action may be an action performed by various components of the vehicle, such as opening of a vehicle solenoid, a rotational speed of a motor of the vehicle, a gear of the vehicle, or an action of other components of the vehicle, etc.
For example, the simulated load 30 may be a model built by a resistor, a capacitor, and an inductor, and may simulate electrical characteristics of each load in a real vehicle, so as to achieve the purpose of performing a simulation test on the electronic control unit 20 to be tested.
Illustratively, the test signal comprises at least one of a switching value signal, an analog value signal and a digital value signal, wherein the switching value signal comprises an opening signal or a closing signal, the analog value signal comprises at least one of a temperature signal and a position signal, and the digital value signal comprises a vehicle speed signal. The electronic control unit 20 to be tested is used for controlling the corresponding analog load 30 to be started or closed according to the switching value signal, and the electronic control unit 20 to be tested is used for controlling the corresponding analog load 30 to execute the corresponding action according to the analog value signal and/or the digital value signal.
The processing module 10 is further connected to the dummy load 30, and is configured to obtain a working state of the dummy load 30 after receiving the control signal, and determine whether the electronic control unit 20 to be tested reaches the standard according to the working state of the dummy load 30, the control signal output by the electronic control unit 20 to be tested, and a preset standard control signal.
Specifically, a standard control signal corresponding to the sent test signal is preset in the processing module 10, that is, the sent test signal corresponds to the standard control signal, and after the processing module 10 sends the test signal, it can estimate what the received control signal output by the electronic control unit 20 to be tested is, for example, the sent test signal is a temperature signal of the motor and indicates that the temperature of the motor is too high. Theoretically, when the temperature of the motor exceeds a preset value, the electronic control unit should output a control signal capable of reducing the temperature of the motor by controlling the increase of the rotating speed of the cooling fan or controlling the opening of the air inlet grille. Therefore, the preset standard control signal in the processing module 10 is a control signal for controlling the increase of the rotation speed of the cooling fan, or controlling the opening of the air inlet grille and the like to reduce the temperature of the motor, and if the control signal output by the electronic control unit 20 to be tested receives the test signal, the control signal output by the electronic control unit 20 to be tested is also a control signal for controlling the increase of the rotation speed of the cooling fan, or controlling the opening of the air inlet grille and the like to reduce the temperature of the motor, it is determined that the control signal output by the electronic control unit 20 to be tested is the same as the preset standard control signal, and the electronic control unit 20 to be tested reaches the standard, otherwise, if the control signal output by the electronic control unit 20 to be tested is not the control signal capable of reducing the temperature of the motor, it represents that the electronic control unit 20 to be tested does not reach the standard. Thereby realizing the test of the electronic control unit 20 to be tested.
In addition, the testing process of the electronic control unit 20 to be tested needs to be monitored through the working state of the dummy load 30, and whether the electronic control unit 20 to be tested and the dummy load 30 are working normally can be determined through the working state of the dummy load 30, and only when the electronic control unit 20 to be tested and the dummy load 30 are working normally, the testing result of the processing module 10 on the electronic control unit 20 to be tested is valid, otherwise, whether the electronic control unit 20 to be tested reaches the standard cannot be determined. Therefore, the test process of the electronic control unit 20 to be tested can be monitored by simulating the working state of the load 30, and the accuracy and reliability of the test result of the electronic control unit 20 to be tested are further improved.
In this embodiment, the processing module 10 is connected to the electronic control unit 20 to be tested, and can send a test signal to the electronic control unit 20 to be tested, so as to test various performances of the electronic control unit 20 to be tested, and obtain a control signal output by the electronic control unit 20 to be tested after receiving the test signal, that is, a feedback signal output by the electronic control unit 20 to be tested after receiving the test signal. The simulation load 30 is connected with the electronic control unit 20 to be tested and used for simulating the load on the actual vehicle, and the simulation load 30 receives the control signal output by the electronic control unit 20 to be tested and executes corresponding action according to the control signal. The processing module 10 obtains the control signal output by the electronic control unit 20 to be tested and the working state of the dummy load 30, compares the control signal output by the electronic control unit 20 to be tested with a preset standard control signal, so as to determine whether the control signal output by the electronic control unit 20 to be tested is correct, i.e. whether the electronic control unit 20 to be tested reaches the standard, and then determines whether the judgment on the electronic control unit 20 to be tested is correct based on the working state of the dummy load 30. Therefore, whether the electronic control unit 20 to be tested reaches the standard or not is comprehensively determined according to the working state of the analog load 30, the control signal output by the electronic control unit 20 to be tested and the preset standard control signal, so that the test on the electronic control unit is realized, and the reliability and the safety of a vehicle subsequently loaded with the electronic control unit are ensured.
In one embodiment, as shown in FIG. 2, the processing module 10 is configured to perform the following steps:
and S200, if the working state of the analog load is normal and the control signal output by the electric control unit to be tested is the same as the standard control signal, judging that the electric control unit to be tested reaches the standard.
And S220, if the working state of the analog load is normal and the control signal output by the electric control unit to be tested is different from the standard control signal, judging that the electric control unit to be tested does not reach the standard.
Specifically, if each parameter of the dummy load 30 is within a preset range and no fault such as open circuit or short circuit occurs, it is determined that the operating state of the dummy load 30 is normal.
Specifically, the testing process of the electronic control unit 20 to be tested is monitored through the working state of the dummy load 30, and it can be determined whether the electronic control unit 20 to be tested and the dummy load 30 are working normally through the working state of the dummy load 30, and the testing result of the electronic control unit 20 to be tested obtained by the processing module 10 is only valid when the electronic control unit 20 to be tested and the dummy load 30 are working normally.
Specifically, a standard control signal corresponding to the sent test signal is preset in the processing module 10, that is, the sent test signal corresponds to the standard control signal, after the processing module 10 sends the test signal, what the received control signal output by the electronic control unit 20 to be tested is can be estimated, and if the control signal actually output by the electronic control unit 20 to be tested is the same as the standard control signal, for example, the electromagnetic valve is opened, it is determined that the electronic control unit 20 to be tested reaches the standard. If the control signal output by the electronic control unit 20 to be tested is different from the standard control signal, for example, the standard control signal should be the turn-on of the cooling fan, but the control signal actually output by the electronic control unit 20 to be tested is not the turn-on of the cooling fan, it is determined that the electronic control unit 20 to be tested does not reach the standard.
In this embodiment, when the analog load 30 is in a normal working state, the processing module 10 can determine whether the electronic control unit 20 to be tested reaches the standard according to a comparison between the control signal actually output by the electronic control unit 20 to be tested and a standard control signal preset in the processing module 10.
In one embodiment, as shown in fig. 3, the vehicle component testing system further comprises: a conversion module 40.
The input end of the conversion module 40 is connected with the processing module 10, and the output end of the conversion module 40 is connected with the electronic control unit 20 to be tested, and is used for converting the test signal output by the processing module 10 into a pulse signal and sending the pulse signal to the electronic control unit 20 to be tested.
Illustratively, when the test signal sent by the processing module 10 is a vehicle speed signal, since the vehicle speed signal is a digital quantity signal, a PWM (Pulse Width Modulation) Pulse signal with a specific frequency and duty ratio needs to be generated by the converting module 40 according to the digital quantity signal, and in this case, the converting module 40 includes a PWM signal generating circuit.
For example, when the test signal sent by the processing module 10 is an analog quantity signal or a switching quantity signal, the converting module 40 may further include a filter circuit, a voltage boosting circuit, a level converting circuit, or the like, and can convert the test signal into a signal suitable for being received by the electronic control unit 20 to be tested, so as to input a test instruction to the electronic control unit 20 to be tested.
In this embodiment, by providing the conversion module 40, the test signal sent by the processing module 10 can be converted into a suitable form and sent to the electronic control unit 20 to be tested, so as to implement the test on the electronic control unit 20 to be tested.
In one embodiment, as shown in fig. 4, the vehicle component testing system further includes: a programmable power supply 50.
The programmable power supply 50 is connected with the electronic control unit 20 to be tested, and the programmable power supply 50 is used for supplying power to the electronic control unit 20 to be tested in a preset power supply mode, wherein the preset power supply mode comprises: the power supply voltage is one of a standard power supply mode of the rated voltage of the electronic control unit 20 to be tested, a high-voltage power supply mode of the power supply voltage higher than the rated voltage of the electronic control unit 20 to be tested, and a low-voltage power supply mode of the power supply voltage lower than the rated voltage of the electronic control unit 20 to be tested.
Specifically, in order to test the reliability of the electronic control unit 20 to be tested, it is necessary to verify whether the electronic control unit 20 to be tested can still normally operate under different power supply voltages, and therefore, the programmable power supply 50 is configured to supply power to the electronic control unit 20 to be tested, and the power supply voltage of the programmable power supply 50 can be adjusted, so that the operating condition of the electronic control unit 20 to be tested under different power supply voltages can be simulated by adjusting the power supply voltage to different values.
Specifically, the programmable power supply 50 may also be connected to the processing module 10 through an RS232 (asynchronous transfer standard) interface, and the processing module 10 may adjust the voltage provided by the programmable power supply 50 according to a preset voltage value, for example, how much the voltage provided by the programmable power supply 50 is preset in each time period, so as to achieve automatic adjustment of the power supply voltage of the programmable power supply 50.
In this embodiment, the programmable power supply 50 is arranged to supply power to the electronic control unit 20 to be tested, so that the working conditions of the electronic control unit 20 to be tested under different power supply voltages can be simulated, and the electronic control unit 20 to be tested is tested.
In one embodiment, as shown in fig. 5, the vehicle component testing system further includes: a test chamber 60.
The electrical control unit 20 to be tested is placed in the test box 60, and the test box 60 is used for adjusting the environmental temperature of the electrical control unit 20 to be tested.
Specifically, the test box 60 can simulate different environmental temperatures for the electronic control unit 20 to be tested, so as to test the working states of the electronic control unit 20 to be tested at different temperatures. The test chamber 60 can also be connected to the processing module 10 through an RS232 (asynchronous transfer standard) interface, and the processing module 10 can adjust the temperature in the test chamber 60 according to a preset temperature value, for example, what the temperature in the test chamber 60 is in each time period can be preset, and the like.
In this embodiment, by providing the test box 60, different environmental temperatures can be provided for the electronic control unit 20 to be tested, so that the working states of the electronic control unit 20 to be tested at different temperatures are tested.
In one embodiment, as shown in fig. 6, the vehicle component testing system further includes: a vibration table 70.
The ecu 20 to be tested is placed on a vibration table 70, and the vibration table 70 is used to simulate a vibration environment for the ecu 20 to be tested.
Specifically, the vibration table 70 may vibrate at a preset frequency, and may simulate a vibration environment of an actual vehicle for the electronic control unit 20 to be tested, so as to test whether the electronic control unit 20 to be tested can normally operate in the vibration environment.
In this embodiment, the vibration table 70 is provided to simulate a vibration environment for the electronic control unit 20 to be tested.
In one embodiment, the processing module 10 is further configured to continuously send a test signal to the ecu 20 to be tested, and continuously determine whether the ecu 20 to be tested reaches the standard, and if the ecu 20 to be tested reaches the standard within a preset time period, determine that the life of the ecu 20 to be tested is qualified.
Specifically, the processing module 10 continuously verifies whether the electronic control unit 20 to be tested reaches the standard, so as to test the service life of the electronic control unit 20 to be tested, for example, a test period is set, which may be 1000 hours, and in a test period, the processing module 10 continuously sends different test signals to the electronic control unit 20 to be tested, and determines whether the electronic control unit 20 to be tested reaches the standard. If the control signal output by the electronic control unit 20 to be tested is correct in a test period, and the electronic control unit 20 to be tested is judged to reach the standard every time, the service life of the electronic control unit 20 to be tested can be judged to be qualified, so that the service life of the electronic control unit 20 to be tested is authenticated.
In this embodiment, whether the ecu 20 to be tested reaches the standard is continuously verified through the processing module 10, so that the life of the ecu 20 to be tested can be tested.
In one embodiment, the processing module 10 is configured to issue an alarm signal if the operating state of the analog load 30 is abnormal.
In this embodiment, since the test on the electronic control unit 20 to be tested needs to be performed only when the analog load 30 is in normal operation, when the operating state of the analog load 30 is abnormal, the test cannot be continued, and at this time, an alarm signal needs to be sent to prompt.
Illustratively, as shown in fig. 7, the vehicle component testing system further includes: control module 80, uninterrupted power source 81, bus power source 82, brake switch 83.
The manipulation module 80 is connected to the processing module 10, and is configured to input a user instruction to the processing module 10.
Specifically, the control module 80 may be a keyboard, a mouse, or a touch screen, and can control the power supply voltage of the electronic control unit 20 to be tested, what kind of test signal is sent by the processing module 10, and the like.
The uninterruptible power supply 81 is connected to the processing module 10, the electronic control unit 20 to be tested, and the dummy load 30, respectively, and is configured to supply power to the processing module 10, the electronic control unit 20 to be tested, and the dummy load 30.
Specifically, the ups 81 is provided to ensure the continuity of the test process and the safety of the test result recording, and the processing module 10 continuously records the test result in the whole test process, so as to prevent the recording interruption caused by sudden power failure, so the ups 81 needs to be provided.
The bus power supply 82 is connected to the programmable power supply 50 and the uninterruptible power supply 81 through a brake switch 83, respectively, for supplying power to the programmable power supply 50 and the uninterruptible power supply 81.
Specifically, the bus power supply 82 is 220V ac mains.
Specifically, the brake switch 83 is arranged to perform emergency power-off on the vehicle component testing system, so that the safety of the vehicle component testing system is ensured.
Specifically, the vehicle component testing system may further include a plurality of analog loads 30 and a plurality of electronic control units 20 to be tested, which are connected to the processing module 10 in the manner shown in fig. 7, and the programmable power supply 50 and the uninterruptible power supply 81 are also connected to the plurality of analog loads 30 and the plurality of electronic control units 20 to be tested, respectively, so that the processing module 10 can test the plurality of electronic control units 20 to be tested at the same time.
In particular, the processing module 10 can be directly connected to the electronic control unit 20 to be tested. The analog load 30 may also be connected to the electronic control unit 20 to be tested, and the conversion module 40 is disposed in the analog load 30.
In one embodiment, as shown in fig. 8, there is provided a vehicle component testing method including:
step S800, sending a test signal to the electric control unit to be tested, and acquiring a control signal output by the electric control unit to be tested after receiving the test signal.
Step S820, obtaining the working state of the analog load after receiving the control signal.
And step 840, determining whether the tested electric control unit reaches the standard or not according to the working state of the analog load, the control signal output by the electric control unit to be tested and a preset standard control signal.
In this embodiment, the test signal is sent to the electronic control unit to be tested, so as to test various performances of the electronic control unit to be tested, and obtain a control signal output by the electronic control unit to be tested after receiving the test signal, that is, a feedback signal output by the electronic control unit to be tested after receiving the test signal. And the simulation load is connected with the electric control unit to be tested and used for simulating the load on the actual vehicle, receiving the control signal output by the electric control unit to be tested and executing corresponding action according to the control signal. The method comprises the steps of obtaining a control signal output by an electronic control unit to be tested and the working state of a simulated load, comparing the control signal output by the electronic control unit to be tested with a preset standard control signal, judging whether the control signal output by the electronic control unit to be tested is correct or not, namely judging whether the electronic control unit to be tested reaches the standard or not, and then determining whether the judgment on the electronic control unit to be tested is correct or not based on the working state of the simulated load. Therefore, whether the electric control unit to be tested reaches the standard or not is comprehensively determined according to the working state of the analog load, the control signal output by the electric control unit to be tested and the preset standard control signal, so that the test on the electric control unit is realized, and the reliability and the safety of a subsequent vehicle loaded with the electric control unit are ensured.
It should be understood that, although the steps in the flowcharts of fig. 2 and 8 are shown in sequence as indicated by the arrows, the steps are not necessarily performed in sequence as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a part of the steps in fig. 2 and 8 may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of performing the steps or stages is not necessarily sequential, but may be performed alternately or alternatively with other steps or at least a part of the steps or stages in other steps.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above may be implemented by hardware instructions of a computer program, which may be stored in a non-volatile computer-readable storage medium, and when executed, may include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others.
In the description herein, references to the description of "some embodiments," "other embodiments," "desired embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a schematic description of the above terminology may not necessarily refer to the same embodiment or example.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A vehicle component testing system, comprising:
the processing module is connected with the electronic control unit to be tested and used for sending a test signal to the electronic control unit to be tested and acquiring a control signal output by the electronic control unit to be tested after receiving the test signal;
the analog load is connected with the electric control unit to be tested and used for receiving the control signal output by the electric control unit to be tested and executing corresponding action under the driving of the control signal;
the processing module is further connected with the analog load and used for acquiring the working state of the analog load after receiving the control signal and determining whether the electric control unit to be tested reaches the standard or not according to the working state of the analog load, the control signal output by the electric control unit to be tested and a preset standard control signal.
2. The system of claim 1, wherein the processing module is configured to,
if the working state of the analog load is normal and the control signal output by the electric control unit to be tested is the same as the standard control signal, judging that the electric control unit to be tested reaches the standard;
and if the working state of the analog load is normal and the control signal output by the electric control unit to be tested is different from the standard control signal, judging that the electric control unit to be tested does not reach the standard, wherein if all the parameters of the analog load are within a preset range and no open circuit or short circuit occurs, determining that the working state of the analog load is normal.
3. The system of claim 1, further comprising:
the input end of the conversion module is connected with the processing module, and the output end of the conversion module is connected with the electric control unit to be tested, so that the test signal output by the processing module is converted into a pulse signal, and the pulse signal is sent to the electric control unit to be tested.
4. The system of claim 1, further comprising:
the programmable power supply is connected with the electronic control unit to be tested, and the programmable power supply is used for supplying power to the electronic control unit to be tested in a preset power supply mode, wherein the preset power supply mode comprises the following steps: the power supply voltage is one of a standard power supply mode of the rated voltage of the electric control unit to be tested, a high-voltage power supply mode of the power supply voltage higher than the rated voltage of the electric control unit to be tested and a low-voltage power supply mode of the power supply voltage lower than the rated voltage of the electric control unit to be tested.
5. The system of claim 1, further comprising:
the test box is used for adjusting the environment temperature of the electronic control unit to be tested.
6. The system of claim 1, further comprising:
the vibrating table, the electrical control unit that awaits measuring is placed on the vibrating table, the vibrating table is used for the electrical control unit that awaits measuring simulates out the vibration environment.
7. The system according to any one of claims 1-6, wherein the processing module is further configured to continuously send a test signal to the electronic control unit under test, continuously determine whether the electronic control unit under test reaches the standard, and determine that the service life of the electronic control unit under test is qualified if the electronic control unit under test is determined to reach the standard within a preset time period.
8. The system of any one of claims 1-6, wherein the test signal comprises at least one of a switching quantity signal, an analog quantity signal, and a digital quantity signal, wherein the switching quantity signal comprises an on signal or an off signal, the analog quantity signal comprises at least one of a temperature signal, a position signal, and the digital quantity signal comprises a vehicle speed signal;
the electric control unit to be tested is used for controlling the corresponding analog load to be started or closed according to the switching value signal, and the electric control unit to be tested is used for controlling the corresponding analog load to execute the corresponding action according to the analog value signal and/or the digital value signal.
9. The system according to any one of claims 1 to 6, wherein the processing module is configured to issue an alarm signal if the operating state of the dummy load is abnormal.
10. A vehicle component testing method, comprising:
sending a test signal to an electronic control unit to be tested, and acquiring a control signal output by the electronic control unit to be tested after receiving the test signal;
acquiring the working state of the analog load after receiving the control signal;
and determining whether the electric control unit to be tested reaches the standard or not according to the working state of the analog load, the control signal output by the electric control unit to be tested and a preset standard control signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210722548.1A CN115078879A (en) | 2022-06-24 | 2022-06-24 | Vehicle component testing system and testing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210722548.1A CN115078879A (en) | 2022-06-24 | 2022-06-24 | Vehicle component testing system and testing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115078879A true CN115078879A (en) | 2022-09-20 |
Family
ID=83255470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210722548.1A Pending CN115078879A (en) | 2022-06-24 | 2022-06-24 | Vehicle component testing system and testing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115078879A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116400145A (en) * | 2023-01-05 | 2023-07-07 | 宁德时代新能源科技股份有限公司 | Test method, system, device and storage medium |
-
2022
- 2022-06-24 CN CN202210722548.1A patent/CN115078879A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116400145A (en) * | 2023-01-05 | 2023-07-07 | 宁德时代新能源科技股份有限公司 | Test method, system, device and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9983244B2 (en) | Power transformation system with characterization | |
| Naseri et al. | Online parameter estimation for supercapacitor state-of-energy and state-of-health determination in vehicular applications | |
| US7759901B2 (en) | Battery monitoring system | |
| US10811892B2 (en) | Source management for a power transformation system | |
| JP2010266439A (en) | Method and test stand for testing hybrid drive system or subcomponent of the same | |
| CN115078879A (en) | Vehicle component testing system and testing method | |
| CN110459785B (en) | Test system and test method of fuel cell | |
| CN113589787A (en) | Hardware-in-loop test method, test device, test system and readable storage medium | |
| US20150168259A1 (en) | Systems and Method for Developing and Testing Hybrid Energy Storage Devices | |
| CN112596374B (en) | Adjusting performance optimization and state monitoring system and method of electronic speed regulator | |
| CN114291015A (en) | Vehicle control method and device, vehicle and storage medium | |
| KR20120055811A (en) | Method for detecting switch input in the sleep mode | |
| CN207731496U (en) | A kind of functional simulation control flow applied to diesel-driven generator control system | |
| CN107269475B (en) | Simulation load test system and method of wind generating set | |
| CN105571059A (en) | Outlet air temperature stability detecting method for multi-connected air conditioner indoor unit and multi-connected air-conditioning system | |
| Seitl et al. | Emulation of a high voltage home storage battery system using a power hardware-in-the-loop approach | |
| WO2014210262A1 (en) | A power transformation system with characterization | |
| CN111289882B (en) | Push-pull output PWM open circuit detection circuit and method and vehicle | |
| CN116382251B (en) | Motor drive system body class function safety test device | |
| Lei et al. | Static and dynamic approaches for analyzing voltage stability | |
| CN115981285A (en) | Data processing method and device for vehicle, storage medium and vehicle | |
| Bompard et al. | Analysis and modelling of thermostatically-controlled loads | |
| CN110429588B (en) | Power electronic system working condition simulation device with output compensation | |
| KR101958118B1 (en) | Apparatus for controlling cell terminal voltage output of battery pack and operation method of the apparatus | |
| CN112780601A (en) | Control method and related device for server fan |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |