An automotive electric rearview mirror performance and durability test system

Abstract

The present invention discloses an automotive electric rearview mirror performance and durability test system. The test system includes an indicator light test system and a durability test system. The durability test system includes a DC power supply control rearview mirror test system and a DCU control rearview mirror test system. The DC power supply control rearview mirror test system, the DCU module, and the CAN / LIN communication module constitute the DCU control rearview mirror test system. The test system of the present invention can simultaneously complete the rearview mirror tests of eight stations, and can complete the tests of the rotation direction of the rearview mirror motor, the motor memory position, the turn signal lamp, the blind spot lamp, the LOGO lamp, the lens heating function, and the anti-glare function, realizing the test of the performance and durability of the rearview mirror indicator light and improving the efficiency of harsh tests.

Description

Technical Field

[0001] The present invention relates to a performance and durability test system for an automotive electric rearview mirror. Background Art

[0002] The ownership of automobiles has been gradually increasing, and the use of automobiles has become gradually intelligent. As an important part of the automobile, the rearview mirror has also realized functions such as automatic folding, anti-glare, blind spot lights, and turn signals, making the rearview mirror tend to be multifunctional; before the rearview mirror leaves the factory or is used, it is necessary to test various functions and usage states of the rearview mirror to ensure the stability of use and product quality; the existing rearview mirror test equipment or test system has certain limitations during use, and each time it can only complete the test of a single item, and basically all tests are completed manually during the test, so the test efficiency is low, and to a certain extent, the accuracy of the test is affected; therefore, it is necessary to develop an intelligent performance and durability test system for automotive electric rearview mirrors. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a performance and durability test system for an automotive electric rearview mirror with diverse functions, high intelligence, capable of testing functions such as the rotation direction of the rearview mirror motor, the motor memory position, turn signals, blind spot lights, LOGO lights, lens heating function, and anti-glare, realizing the accuracy of test data, improving the test efficiency, and having practicality and wide application.

[0004] To solve the above problems, the present invention adopts the following technical solutions:

[0005] A performance and durability test system for an automotive electric rearview mirror, which can simultaneously complete the rearview mirror tests of 8 stations, and can complete the tests of the rotation direction of the rearview mirror motor, the motor memory position, turn signals, blind spot lights, LOGO lights, lens heating function, and anti-glare function;

[0006] The test system is composed of an industrial control host, a first relay module, a second relay module, a relay module switching channel, a 5A current acquisition module, a 500mA current acquisition module, a PWM module, a flashing module, a 5-digit display 30V / 3A linear power supply, a 6-digit display 30V / 3A linear power supply, a 5-digit display 30V / 20A high-precision switching power supply, a 30V / 20A high-precision switching power supply, a high-speed sampling card, a PLC, a DCU module, and a CAN / LIN communication module; during the test, the rearview mirror is connected to the second relay module;

[0007] The test system includes an indicator light test system and an endurance test system. The endurance test system includes a DC power supply controlled mirror test system and a DCU controlled mirror test system; the DC power supply controlled mirror test system, the DCU module, and the CAN / LIN communication module constitute the DCU controlled mirror test system.

[0008] Preferably, the 5-digit display 30V / 3A linear power supply, the 6-digit display 30V / 3A linear power supply, the 5-digit display 30V / 20A high-precision switching power supply, the 30V / 20A high-precision switching power supply, the high-speed sampling card, the PLC, and the CAN / LIN communication module are connected to the industrial control host;

[0009] The CAN / LIN communication module is connected to the DCU module, and the DCU module is connected to the 30V / 20A high-precision switching power supply and the relay module one;

[0010] The PLC is connected to the relay module one, the flashing module, the relay module switching channel, and the relay module two;

[0011] The 5-digit display 30V / 3A linear power supply, the 6-digit display 30V / 3A linear power supply, the 5-digit display 30V / 20A high-precision switching power supply, the 30V / 20A high-precision switching power supply, and the high-speed sampling card are connected to the relay module one;

[0012] The relay module one is connected to the relay module two;

[0013] The 5-digit display 30V / 3A linear power supply is connected to the PWM module, and one end of the PWM module is connected between the relay module one and the relay module two;

[0014] The flashing module is arranged between the relay module one and the relay module two;

[0015] The relay module two, the relay module switching channel, the relay module one, the high-speed acquisition card, and the industrial control host are connected;

[0016] The relay module two, the DCU module, the CAN / LIN communication module, and the industrial control host are connected.

[0017] Preferably, each workstation includes a host computer software, a sampling circuit, a switching circuit, and a power supply module. The host computer software is integrated in the industrial control host, and the host computer software controls the operation of the entire test system;

[0018] The 5-digit display 30V / 3A linear power supply, the 6-digit display 30V / 3A linear power supply, the 5-digit display 30V / 20A high-precision switching power supply, and the 30V / 20A high-precision switching power supply constitute the power supply module;

[0019] The sampling circuit is composed of a Hall sensor, the input part of a high-speed sampling card, a 5A current acquisition module, and a 500mA current acquisition module;

[0020] The switching circuit is composed of relay module one, relay module two, a relay module switching channel, a PLC, and the output part of a high-speed sampling card.

[0021] Preferably, the high-speed sampling card of the sampling circuit performs uninterrupted high-speed sampling on the XY feedback voltage and motor current of each station.

[0022] Preferably, the test method for the motor memory position, that is, whether the reflector can accurately restore its position, is as follows: Through continuous two-time sampling of the memory feedback voltage and motor current from 0 to the stall state in the X direction, analyze and judge the corresponding relationship between the torsion angle of the reflector, the feedback voltage, and the motor rotation time through the trend of the curve.

[0023] Preferably, the test method for the rotation direction of the reflector motor, that is, the durability test, is as follows: Adopt the 8-step requirement method for lens adjustment, that is, rotate one position in the X-axis direction and then one position in the Y-axis direction, then restore in the Y-axis direction, and finally restore in the X-axis direction, so that the reflector makes reciprocating movements according to a certain rule for a certain number of times, and at the same time record the dynamic current and feedback voltage of the reflector during the movement process.

[0024] Preferably, the test method for the indicator light test system is as follows: Perform serial port settings, and supply power for the test of the turn signal lamp, blind area lamp, LOGO lamp, and lens heating function of the reflector through a 5-digit display 30V / 20A high-precision switching power supply, and supply power for the test of the anti-glare function of the reflector through a 6-digit display 30V / 3A linear power supply;

[0025] Collect the current values when the turn signal lamp, blind area lamp, LOGO lamp, and anti-glare function are energized through the 500mA current acquisition module;

[0026] Collect the current value when the lens heating function of the reflector is turned on through the 5A current acquisition module.

[0027] Preferably, the test steps for the DC power supply control reflector test system are as follows:

[0028] 1) Open the upper computer software;

[0029] 2) Perform serial port settings and set the communication serial port;

[0030] 3) Connect the reflector circuit. The reflector connection follows the connection of the 1-3-5-7 aviation interface to the left reflector, and the 2-4-6-8 aviation interface must be connected to the right reflector;

[0031] 4) Perform power supply settings and set parameters such as the PWM frequency, feedback power supply voltage, and motor power supply voltage;

[0032] 5) Set up the test file, select a file to be loaded. When selecting the file, it must correspond to the feedback voltage and model.

[0033] 6) Set the voltage, current, and test time.

[0034] 7) Test the left rearview mirror and / or right rearview mirror, and record and store the test data.

[0035] Preferably, the test steps of the DCU-controlled rearview mirror test system are as follows:

[0036] 1) Connect the left rearview mirror and right rearview mirror, turn on the power of the test equipment, and open the upper computer software.

[0037] 2) Open the corresponding DCU power supply through the power setting button and select the left and right workstations.

[0038] 3) Load the test plan to be tested.

[0039] 4) Synchronously test the left rearview mirror and right rearview mirror.

[0040] 5) Execute in a loop.

[0041] 6) Record and store the test data.

[0042] The beneficial effects of the present invention are as follows: It has diverse functions and a high degree of intelligence. It can test functions such as the rotation direction of the rearview mirror motor, the motor memory position, the turn signal, the blind spot lamp, the LOGO lamp, the lens heating function, and anti-glare, realizing the accuracy of test data and the intelligence of the test method. At the same time, it can implement parallelism of multiple test methods to meet the requirements of manual testing and automatic testing; it can also complete synchronous or step-by-step testing of rearview mirrors at 8 workstations at one time, improving the test efficiency, and it has practicality and wide application. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art, but it is not a limitation to the protection scope of the present invention.

[0044] Figure 1 It is a schematic diagram of the system framework of the present invention;

[0045] Figure 2 It is a motor test curve graph of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0046] Refer to Figures 1 to 2An automotive electric rearview mirror performance and durability test system as shown, which can simultaneously complete the rearview mirror tests at 8 workstations and can complete the tests of the rotation direction of the rearview mirror motor, the motor memory position, the turn signal, the blind spot light, the LOGO light, the lens heating function, and the anti-glare function;

[0047] Furthermore, the test system is composed of an industrial control host, a relay module one, a relay module two, a relay module switching channel, a 5A current acquisition module, a 500mA current acquisition module, a PWM module, a flashing module, a 5-digit display 30V / 3A linear power supply, a 6-digit display 30V / 3A linear power supply, a 5-digit display 30V / 20A high-precision switching power supply, a 30V / 20A high-precision switching power supply, a high-speed sampling card, a PLC, a DCU module, and a CAN / LIN communication module; during the test, the rearview mirror is connected to the relay module two;

[0048] Furthermore, the test system includes an indicator light test system and a durability test system, and the durability test system includes a DC power supply controlled rearview mirror test system and a DCU controlled rearview mirror test system; the DC power supply controlled rearview mirror test system, the DCU module, and the CAN / LIN communication module form the DCU controlled rearview mirror test system.

[0049] Furthermore, the 5-digit display 30V / 3A linear power supply, the 6-digit display 30V / 3A linear power supply, the 5-digit display 30V / 20A high-precision switching power supply, the 30V / 20A high-precision switching power supply, the high-speed sampling card, the PLC, and the CAN / LIN communication module are connected to the industrial control host;

[0050] Furthermore, the CAN / LIN communication module is connected to the DCU module, and the DCU module is connected to the 30V / 20A high-precision switching power supply and the relay module one;

[0051] Furthermore, the PLC is connected to the relay module one, the flashing module, the relay module switching channel, and the relay module two;

[0052] Furthermore, the 5-digit display 30V / 3A linear power supply, the 6-digit display 30V / 3A linear power supply, the 5-digit display 30V / 20A high-precision switching power supply, the 30V / 20A high-precision switching power supply, and the high-speed sampling card are connected to the relay module one;

[0053] Furthermore, the relay module one is connected to the relay module two;

[0054] Furthermore, the 5-digit display 30V / 3A linear power supply is connected to the PWM module, and one end of the PWM module is connected between the relay module one and the relay module two;

[0055] Furthermore, the flashing module is arranged between the first relay module and the second relay module;

[0056] Furthermore, the second relay module, the relay module switching channel, the first relay module, the high-speed acquisition card, and the industrial control host are connected;

[0057] Furthermore, the second relay module, the DCU module, the CAN / LIN communication module, and the industrial control host are connected.

[0058] Furthermore, each station includes a host computer software, a sampling circuit, a switching circuit, and a power supply module. The host computer software is integrated in the industrial control host, and the host computer software controls the operation of the entire test system;

[0059] Furthermore, the power supply module is composed of a 5-digit display 30V / 3A linear power supply, a 6-digit display 30V / 3A linear power supply, a 5-digit display 30V / 20A high-precision switching power supply, and a 30V / 20A high-precision switching power supply;

[0060] Furthermore, the Hall sensor, the input part of the high-speed sampling card, the 5A current acquisition module, and the 500mA current acquisition module form a sampling circuit;

[0061] Furthermore, the first relay module, the second relay module, the relay module switching channel, the PLC, and the output part of the high-speed sampling card form a switching circuit.

[0062] Furthermore, the sampling circuit uses the high-speed sampling card to continuously and rapidly sample the XY feedback voltage and the motor current of each station.

[0063] Furthermore, the test method for the motor memory position, that is, whether the rearview mirror can accurately restore the position, is as follows: Through continuous sampling of the memory feedback voltage and the motor current from 0 to the stall state in the X direction twice, analyze and judge the corresponding relationship between the torsion angle of the rearview mirror, the feedback voltage, and the motor rotation time through the trend of the curve.

[0064] Furthermore, the rotation orientation of the rearview mirror motor, that is, the durability test method, is as follows: Adopt the 8-step requirement method for lens adjustment, that is, rotate one position in the X-axis direction and then rotate to one position in the Y-axis direction, then restore in the Y-axis direction, and finally restore in the X-axis direction, so that the rearview mirror makes a reciprocating motion according to a certain rule for a certain number of times, and record the dynamic current and feedback voltage of the rearview mirror during the movement process.

[0065] Furthermore, the test method for the indicator light test system is as follows: Perform serial port settings, supply power for the test of the turn signal light, blind spot light, LOGO light, and lens heating function of the rearview mirror through the 5-digit display 30V / 20A high-precision switching power supply, and supply power for the test of the anti-glare function of the rearview mirror through the 6-digit display 30V / 3A linear power supply;

[0066] Collect the current values of the turn signal, blind spot lamp, LOGO lamp, and anti-glare function when powered on through a 500mA current acquisition module;

[0067] Collect the current value when the heating function of the rearview mirror lens is turned on through a 5A current acquisition module.

[0068] Furthermore, the test steps of the rearview mirror test system controlled by the DC power supply are as follows:

[0069] 1. Software startup: Open the main interface of the test software;

[0070] 2. Serial port setting: Click the Settings\Serial Port Settings menu item to set the communication serial port;

[0071] 3. Rearview mirror connection: The rearview mirror to be tested should be connected before the test. Note that for the type of rearview mirror, the 1-3-5-7 aviation interface must be used to connect the left rearview mirror, and the 2-4-6-8 aviation interface must be used to connect the right rearview mirror;

[0072] 4. Power supply setting: Before the test, first set the two power supply parameters of the workbench: the PWM frequency of the workbench, the feedback power supply voltage, and the motor power supply voltage; Setting one workbench can start the test of one workbench. Click Settings and open it to start preparing for the test;

[0073] 5. Test file setting: Select a file to be loaded. When selecting the file, it must correspond to the feedback voltage and model; The file has nothing to do with the left or right rearview mirror but is related to the feedback voltage;

[0074] 6. Test setting: The first two are the settings for the curve number axis display part. The third, the card machine time, is the maximum duration of an action. As shown in the figure above, if an action exceeds 30 seconds, the device will automatically stop and report an error, indicating that the rearview mirror is stuck;

[0075] When the rearview mirror current exceeds 400mA, the test will automatically stop and display that the current is over-limit;

[0076] 7. Test record: The test records are stored in E:\data\workbench number. For example, the test content of workbench 1 is stored in E:\data\1. Please empty this folder before the test and click the clear function on the panel.

[0077] Furthermore, the test steps of the rearview mirror test system controlled by the DCU are as follows:

[0078] 1. Software startup: Open the main interface of the test software;

[0079] 2. Serial port setting: Click the Settings\Serial Port Settings menu item to set the communication serial port; Each DCU power supply corresponds to a serial port, and 4 CAN serial ports and one PLC serial port are required;

[0080] 3. Rearview Mirror Connection: Connect the rearview mirror to be tested before testing. Note that for the type of rearview mirror, it must follow the rule that the left rearview mirror is connected to the 1-3-5-7 aviation interface, and the right rearview mirror must be connected to the 2-4-6-8 aviation interface;

[0081] 4. Power Supply Setting: For example, the power supplies of workstations 1 and 2 are turned on and off simultaneously. When the power supply is turned on, the type of rearview mirror (left or right rearview mirror) also needs to be selected. Different from the DC control, the DCU control mode can only control one rearview mirror, while folding can actuate two rearview mirrors simultaneously. If we want to use workstation 1, just select the left rearview mirror; if we want to use the rearview mirror connected to workstation 2, select the right rearview mirror. After selection, click "Settings" and turn it on.

[0082] 5. Test Setting: Since the time from left to right is relatively long, if the set time is too short, it may end the action before reaching the destination. Therefore, attention should be paid to the size and unit in time setting. The process of DCU test is as follows:

[0083] a. Connect the rearview mirror and turn on the power of the test equipment, then open the software.

[0084] b. Open the corresponding DCU power supply through the power supply setting button and select the left or right workstation.

[0085] c. Load the test plan. The plan file consists of middle, upward, downward, leftward, rightward, folding, unfolding, and waiting, and self-programming is allowed.

[0086] d. Execute in a loop.

[0087] 6. Test Record: The test record is stored in E:\data\workstation number. For example, the test content of workstation 1 is stored in E:\data\1. Please empty this folder before testing and click the "Empty" function on the panel.

[0088] Furthermore, the test steps of the indicator light performance test system are as follows:

[0089] 1. Software Startup: Open the main interface of the test software;

[0090] 2. Serial Port Setting: Click the "Settings\Serial Port Settings" menu item to set the communication serial port; at this time, 6 serial ports are required for indicator light testing. The power supplies for workstations 1-4 are the same power output, the power supplies for workstations 5-8 are the same power output, and the anti-glare is set with a separate power supply.

[0091] 3. Power Supply Setting: In the indicator light test, the power supply is divided into three parts. One power supply for workstations 1-4 (excluding anti-glare), the second power supply for workstations 5-8 (excluding anti-glare), and the anti-glare power supply for workstations 1-8. This requires that the power supply voltages of the signal lights at workstations 1-4 must be the same for the same model, and the same for workstations 5-8.

[0092] 4. Test settings: After pressing the button, if the power supply is set correctly, the setting button corresponding to the work station can be used. After clicking the setting button, the test setting button for the corresponding work station can be set, and the test settings can be opened. At this time, the power-on time and power-off time are indicated by flashing settings. For example, the turn signal is on for 0.1 seconds and off for 1 second. If the non-flashing option is selected, regardless of the power-on time setting, the light will be always on and not controlled by the flashing time setting.

[0093] For the large loop test time, if either the test time or the stop time is set to 0, the large loop function fails. If a value is filled in for the large loop time, such as 1 minute, and the large loop stop time is filled in as 2 minutes, then after flashing for 1 minute, the power will be off for 2 minutes. This power-off is not restricted by the non-flashing option setting. Note that the unit of the loop time here is minutes.

[0094] The countdown duration is the total test time length, with the unit being minutes. The maximum and minimum values of the current are provided for the user to compare because during operation, there may be phenomena of excessive or too low current, so it is impossible to determine whether it exceeds the limit.

[0095] 5. Start the test: After pressing the button corresponding to the work station, the button of that work station will show an active state, and various items of that work station can be tested by setting the test parameters.

[0096] 6. Stop the test:

[0097] Press the corresponding start button to stop the test of the entire work station, and the stop test in the software can stop any operation in the work station.

[0098] In the process of implementing the present invention: When using the DCU module, the relay module will switch the circuit to the DCU interface for a while. For the data that the DCU module can communicate and read, the host computer software obtains it from the DCU module (the data accuracy and data speed are determined by the DCU module). For the data that cannot be read from the DCU module, the data is read from the acquisition circuit.

[0099] Design of the running test function:

[0100] The purpose of the running test is to sample the memory feedback voltage and motor current in the X direction from 0 to the stalled state twice continuously, and analyze and judge the corresponding relationship between the torsion angle of the rearview mirror, the feedback voltage, and the motor rotation time through the trend of the curve, so as to determine whether the rearview mirror can accurately restore its position. The specific method is to first use the manual button to adjust the rearview mirror to the X or Y stalled state. X+, X-, Y+, Y- respectively represent the adjustment function buttons in each XY direction. After pressing the button, the motor will keep moving. After adjustment in place, you can press Figure 2, the middle button stops the motor. Secondly, click the "X-direction test" or "Y-direction test" button, and the system will switch the circuit according to the user's selection. The X-direction motor starts a test cycle from the initial position, for example, from -X to 0 and then to +X; after the system equipment monitors the stall current, it will automatically reverse the motor until it returns to -X again, and a test cycle is considered complete. Next, the user will perform the second, third, and fourth reciprocating tests, and the software will draw multiple voltage curves of different colors or states on the interface. Since a large area of curve drawing requires exclusive use of the screen during the running test, only one station can be tested on the main interface.

[0101] The curve allows to be saved as a picture file, but the data is not saved in real time. After the software is closed, the historical records cannot be found again. As Figure 2 shown, during the running test, the system needs to perform two consecutive tests for one direction, namely the solid line and the dotted line, and visually compare to confirm whether there is a deviation between the two measurement results. The test is performed separately for the X and Y directions. The solid line and the dotted line are the results of the first and second tests respectively. The X-axis is the test time in seconds, and the Y-axis is the memory voltage value. By comparing the shapes of the voltage curves of the two tests, the consistency of the product to be tested can be determined whether it is good.

[0102] The main interface of the host computer software of the present invention simultaneously displays the working states of 8 stations. Each station simultaneously displays 3 curves, namely 2 memory voltage curves and 1 current curve. Each station can independently set the working mode (parameter setting), start or end the test. During the test, if the current exceeds the upper limit current set by the user, the test will be forced to stop and an error message with a timestamp will be added to the error message bar; provide an independent manual adjustment panel, and the angle of the corresponding mirror can be adjusted separately by buttons; there are two setting buttons, namely durability test and manual test.

[0103] The test interface of the host computer software corresponds to 8 stations. When it is necessary to view a certain station in detail, you can click the icon of a certain station, and a pop-up window will enlarge the test interface of a certain station, and the data curve is also displayed in real time. The saved historical data can be appropriately reduced. In the host computer software, the memory voltage value can be filled in, or the specific angle value can be filled in (the relationship between the angle and the voltage must be filled in).

[0104] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any change or replacement that comes to mind without creative labor should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims

1. A vehicle electric reflector performance and durability testing system, characterized by: The system can complete the reflector test of 8 stations at the same time, and can complete the test of the reflector motor rotation direction, motor memory position, turn signal, blind spot light, LOGO light, lens heating function and anti-glare function; The test system includes an indicator light test system and a durability test system, and the durability test system includes a DC power supply controlled reflector test system and a DCU controlled reflector test system; the DC power supply controlled reflector test system, the DCU module and the CAN / LIN communication module constitute the DCU controlled reflector test system; The test system is composed of an industrial control host, a relay module 1, a relay module 2, a relay module switching channel, a 5A current acquisition module, a 500mA current acquisition module, a PWM module, a flashing module, a 5-digit display 30V / 3A linear power supply, a 6-digit display 30V / 3A linear power supply, a 5-digit display 30V / 20A high-precision switching power supply, a 30V / 20A high-precision switching power supply, a high-speed sampling card, a PLC, a DCU module and a CAN / LIN communication module; during the test, the reflector is connected to the relay module 2; The 5-digit display 30V / 3A linear power supply, 6-digit display 30V / 3A linear power supply, 5-digit display 30V / 20A high-precision switching power supply, 30V / 20A high-precision switching power supply, high-speed sampling card, PLC and CAN / LIN communication module are connected to the industrial control host; The CAN / LIN communication module is connected to the DCU module, and the DCU module is connected to a 30V / 20A high-precision switching power supply and a relay module; The PLC is connected to the relay module 1, the flashing module, the relay module switching channel and the relay module 2; The 5-digit display 30V / 3A linear power supply, the 6-digit display 30V / 3A linear power supply, the 5-digit display 30V / 20A high-precision switching power supply, the 30V / 20A high-precision switching power supply, and the high-speed sampling card are connected to the relay module; The relay module 1 is connected to the relay module 2; The 5-digit 30V / 3A linear power supply is connected to the PWM module, and one end of the PWM module is connected between the relay module 1 and the relay module 2; The flashing module is arranged between the relay module 1 and the relay module 2; The relay module 2, the relay module switching channel, the relay module 1, the high-speed acquisition card, and the industrial control host are connected; The relay module 2, DCU module, CAN / LIN communication module and industrial control host are connected; The test method for the motor memory position, that is, whether the reflector can accurately restore its position, is as follows: by sampling the memory feedback voltage and motor current from 0 to the stalled state in the X direction twice in a row, and by analyzing and judging the corresponding relationship between the reflector torsion angle, feedback voltage and motor rotation time through the trend of the curve.

2. The automotive electric reflector performance and durability testing system according to claim 1, characterized in that: Each station includes host computer software, sampling circuit, switching circuit and power module. The host computer software is integrated in the industrial control host and controls the operation of the entire test system. The power module consists of a 5-digit display 30V / 3A linear power supply, a 6-digit display 30V / 3A linear power supply, a 5-digit display 30V / 20A high-precision switching power supply, and a 30V / 20A high-precision switching power supply; The Hall sensor, high-speed sampling card input part, 5A current acquisition module and 500mA current acquisition module form the sampling pair; Relay module one, relay module two, relay module switching channel, PLC, and high-speed sampling card output part constitute a switching circuit.

3. The automotive electric reflector performance and durability testing system according to claim 1, characterized in that: The rotation direction of the mirror motor, that is, the method of durability test is: adopt the 8-step requirement method for lens adjustment, that is, rotate one position in the X-axis direction, then turn to one position in the Y-axis direction, then restore the Y-axis direction, and finally restore the X-axis direction, so that the mirror can reciprocate a certain number of times according to a certain rule, and record the dynamic current and feedback voltage of the mirror during the movement.

4. The automotive electric reflector performance and durability testing system according to claim 1, characterized in that: The test method of the indicator light test system is: set up the serial port, The 5-digit 30V / 20A high-precision switching power supply is used to power the turn signal, blind spot light, LOGO light, and lens heating function of the reflector. The anti-glare function of the reflector is tested with a 6-digit 30V / 3A linear power supply; The current value of the turn signal light, blind spot light, LOGO light, and anti-glare function when powered on is collected through the 500mA current collection module; The current value when the reflector lens heating function is turned on is collected through the 5A current collection module.

5. The automotive electric reflector performance and durability testing system according to claim 1, characterized in that: The sampling circuit uses a high-speed sampling card to perform uninterrupted high-speed sampling on the XY feedback voltage and motor current of each station.

6. The automotive electric reflector performance and durability testing system according to claim 1, characterized in that: The test steps of the DC power supply controlled reflector test system are as follows: 1) Open the host computer software; 2) Perform serial port settings and set the communication serial port; 3) Connect the reflector circuit. The reflector connection follows the 1-3-5-7 aviation interface to connect the left reflector, and the 2-4-6-8 aviation interface must be connected to the right reflector; 4) Set the power supply, PWM frequency, feedback power supply voltage, and motor power supply voltage parameters; 5) Set the test file and select a file to load. The file selection must correspond to the feedback voltage and model; 6) Set the voltage, current and test time; 7) Test the left reflector and / or the right reflector, and record and store the test data.

7. The automotive electric reflector performance and durability testing system according to claim 1, characterized in that: The test steps of the DCU controlled reflector test system are as follows: 1) Connect the left and right reflectors, turn on the power of the test equipment, and open the host computer software; 2) Turn on the corresponding DCU power through the power setting button and select the left and right workstations; 3) Load the scenario to be tested; 4) Perform synchronous testing on the left and right reflectors; 5) Loop execution; 6) Record and store test data.

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